g a glob of slime is launched or dropped from the edge of a cliff. which of the graphs in fig. 7-22 could possibly show how the kinetic energy of the glob changes during its flight?
Answers
The glob would have kinetic energy as it is falling modelled by graph f.
What is kinetic energy?We know that the kinetic energy has to do with the energy that is possessed by a body by virtue of the fact that the body is in motion. We know that kinetic energy is one of the forms of mechanical energy. The term mechanical energy has to do with energy that is at rest or in motion. The energy that is at rest is called the potential energy.
We have been told in the question that a glob of slime is launched or dropped from the edge of a cliff. We have to note that the kinetic energy of the object is going to increase as it is falling to the ground. It then follows that the glob would have its maximum kinetic energy when the glob must have fallen to the ground.
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Related Questions
When galaxies collide, what happens in general to the stars contained within them?.
Answers
They typically avoid collision as they pass by the stars in the opposite galaxy.
What happens to stars when galaxies collide?
Star formation can potentially be sparked by merging galaxies. Galaxies are made of gas and dust as well. This material may be affected by the gravitational pull of both colliding stars, resulting in friction and shock waves that could spark the fusion of new stars.In the galaxies, gas clouds DO clash. In addition to creating neutron stars and black holes, the collisions may also result in bursts of star formation, excess supernovae, and other high-energy events.As the supermassive black holes merge, some stars will be flung out of the galaxy and others will be obliterated. Additionally, both galaxies' fragile spiral structures will be obliterated when they merge to form a single, massive elliptical galaxy.To learn more about galaxies collide refer: brainly.com/question/24806910
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Match the hormone abbreviations with their function. Match the hormone abbreviations with their function. 166 points TRH Астн ADH PRL (2 015744 Match each of the options above to the items below Stimulates ovulation Stimulates production of TSH and PRL Stimulates secretion of anti-stress hormones Stimulates milk synthesis Stimulates water retention
Answers
The hormone abbreviations with their function:
TRH = Stimulation of anti stress hormones
АCTH = Stimulates production TSH and PRL
ADH = Stimulates water retention
PRL = Stimulates milk synthesis
LH = Stimulates ovulation
What are hormones?Hormones are your body's chemical messengers. They travel to tissues and organs through bloodstream. They work slowly over time and affect various processes such as: growth and development. Metabolism - how your body gets energy from what you eat. Hormones play a major role in normal function. They are called chemical messengers because they carry information from the endocrine glands to different parts of the body. They control heart rate, sleep cycles, sexual function, and reproduction. Metabolism, appetite, growth and development, mood, stress, and body temperature are all influenced by hormones.
Endocrine glands release hormones into the bloodstream. This allows the hormone to move to cells in other parts of the body. Endocrine hormones help regulate mood, growth and development, organ function, metabolism and reproduction. The endocrine system regulates the amount of each hormone released.
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The complete question is as follows:
A girl and boy are moving a wagon full of books across the floor at a constant speed. We know the girl is pulling the wagon at an angle of 36.9 degrees. She is pulling with a force of 50N and the boy is pushing with a force of 30N. The mass of the wagon and books together is 90kg.
Answers
0.88m/s is the the acceleration when the girl is pulling the wagon at an angle of 36.9 degrees. She is pulling with a force of 50N and the boy is pushing with a force of 30N. The mass of the wagon and books together is 90kg.
What is Force?A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
The given data :
Pushing force by boy =30N
pulling force by Girl=50N
Mass of wagon and books together= 90kg
angle of pulling =36.9 degree
so the acceleration will be=F/m
hence net force =30+50N=80N
a=80/90
a=0.88m/s
Hence, 0.88m/s is the the acceleration when the girl is pulling the wagon at an angle of 36.9 degrees. She is pulling with a force of 50N and the boy is pushing with a force of 30N. The mass of the wagon and books together is 90kg.
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Which of the following is a characteristic of science? (3 points)
a
It investigates the supernatural.
b
It asks testable questions.
c
It is done by only one scientist at a time.
d
It uses opinions to make conclusions.
Answers
It asks testable questions is the following is a characteristic of science.
What is science?Science provides objective knowledge. The ability to perceive and accept facts for what they are—as opposed to what one may wish they were—is known as simple objectivity.
Being objective requires guarding against one's own biases, convictions, desires, values, and preferences. To be objective, one must put aside all forms of prejudice and subjective thinking.
Science is based on sensory data, or information obtained through our senses of sight, hearing, smell, tongue, and touch. Scientific knowledge is founded on verifiable evidence (concrete, objective observations), which enables additional observers to observe the same phenomenon and confirm the observation's accuracy.
Therefore, It asks testable questions is the following is a characteristic of science.
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which of the following is true? a) You can have acceleration not equal zero, butvelocity equal to zero.b) You can have acceleration equal to zero, butvelocity not equal to zero.c) You can accelerate without changing your speed.d) all of the abovee) A and B
Answers
The correct answer is option A.
We can have velocity equal to zero but acceleration not equal to zero.
We know that acceleration depends on the velocity which depends on the direction and time.
But there are times when a body can be said to be accelerating even when the velocity is zero.
Velocity is a vector quantity and is defined as the rate of change of displacement of an object with time. On the other hand, acceleration is the time rate of change of velocity.
The acceleration is
a = dv/dt
For zero acceleration
0 = dv / dt
It is possible that the acceleration of a particle is non-zero and velocity is zero at the same instant.
At the point where the velocity becomes zero, only the instantaneous velocity of the body is zero, at any time before or after this time, the object has a non-zero velocity.
For example, if a ball is thrown up then at the highest point, velocity is zero but the acceleration is non-zero.
This means that there is still change in the velocity when the velocity of the object reaches zero. Therefore, the body is still accelerating.
By the property of Simple Harmonic Motion, we can tell that when a ball is thrown upwards on earth with a constant velocity, the gravitational force of the earth acts on it in the opposite direction.
Therefore, at the highest point, the velocity of the ball becomes zero, after which it starts to fall down. At this point, the velocity of the ball is zero yet its acceleration is equal to g = 9.8 m/s² which is a non-zero and the body is said to be accelerating even if the velocity is equal to zero.
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What is the most numerous type of receptor? Multiple Choice Tactile receptors Chemoreceptors Photoreceptors Proprioceptors
Answers
Tactile receptors are the most numerous type of receptors.
Tactile receptors are the most numerous type of sensory receptors that includes mechanoreceptors (in skin) and mucous membranes.A mechanoreceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are innervated by sensory neurons that convert mechanical pressure into electrical signals that, in animals, are sent to the central nervous system.There are three classes of mechanoreceptors: tactile, proprioceptors, and baroreceptors. Mechanoreceptors sense stimuli due to physical deformation of their plasma membranes. They contain mechanically-gated ion channels whose gates open or close in response to pressure, touch, stretching, and sound.To know more about receptors visit:
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a planet orbiting another star is made primarily of hydrogen and helium and has approximately the same mass as jupiter but is the same size as neptune.
a. true
b. false
Answers
When a planet orbiting another star is made primarily of hydrogen and helium and has approximately the same mass as jupiter but is the same size as neptune, it is a false statement.
What is a planet?A planet is defined as the solar body that revolves round the sun. There are various types of planets which include the following:
Mercury: The radius of this planet is 2,440km which is about 1/3 the size of Earth.Venus: The radius of this planet is 6,052km only which is slightly smaller than Earth.Earth: The earth has approximately 6,371km radius.Mars: The radius of this planet is 3,390km which is about half the size of Earth.Jupiter: The radius of this planet is 69,911km which is about 11x Earth’s size.Saturn: The radius of this planet is 58,232km which is about 9x larger than Earth.Uranus. : The radius of this planet is 25,362km which is about 4x Earth’s size.Neptune: The radius of this planet is 24,622km which is only slightly smaller than Uranus.Pluto: Sometimes not regarded as a planet.The statement about the planet is a false statement because it is contradictory. This is so because, in order to be smaller than Jupiter, a hydrogen-helium planet would have to be more gravitationally compressed, so it would have to have a larger mass than Jupiter, also a planet with that size and mass would be too dense to be made of hydrogen and helium.
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which statements are true concerning a substance with a high specific heat? select one or more: the substance cools down slowly after heating. an example substance is aluminum metal. the substance easily gets hot when heat is applied. an example substance is water.
Answers
The statement that is true concerning a substance with high specific heat is as follows: the substance cools down slowly after heating. an example substance is aluminum metal (option A)
What is specific heat?Specific heat or specific heat capacity refers to the heat capacity per unit mass of a pure substance.
In other words, specific heat is defined as the amount of heat needed to increase the temperature of 1kg of a material by 1K and is expressed in terms of J/kg·K or equivalently J/kg·°C.
The specific heat capacity of a material is a physical property. It is also an example of an extensive property since its value is proportional to size.
Water is an example of a substance that has an extremely high specific heat capacity, which makes it good for temperature regulation.
Therefore, a substance with high specific heat cools down slowly after heating and an example is aluminum metal.
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At what radial distance from the center of a toroid of 300 windings does the magnitude of the magnetic field equal that found inside a solenoid that has 400 turns per meter of length? Assume that the current is the same through both devices.The magnitude of the magnetic field inside a toroid of total Ntturns and carrying a current I is, Bt=μ0NtI2πs, where s is the distance of the field point from the center of the toroid. The magnitude of the magnetic field inside a solenoid of Ns turns per unit length and carrying a current I is Bs=μ0NI. So if for a value of s, the magnetic field inside a toroid and a solenoid are the same, then the value of s can be found by using the equation, μ0NtI2πs=μ0NsI.
Answers
The radial distance from the center of the toroid is 12 cm such that the magnitude of magnetic field through the toroid is equal to that found inside the solenoid.
It is given to us that -
The toroid has 300 windings
The solenoid has 400 turns per meter of length
We have to find out the radial distance from the center of the toroid if the magnitude of the magnetic field is equal to that found inside the solenoid.
We know that the magnitude of the magnetic field inside a toroid is given by -
[tex]B_{t} =[/tex] (μ₀[tex]N_{t}[/tex]I)/(2[tex]\pi[/tex]s) ------ (1)
where,
s = radial distance from the center of the toroid
I = current flowing through the toroid wire
[tex]N_{t}[/tex] = total turns in the toroid
We also know that the magnitude of magnetic field inside a solenoid is given by -
[tex]B_{s} =[/tex] μ₀[tex]N_{s}[/tex]I ----- (2)
where,
[tex]N_{s}[/tex] = turns per unit length of the solenoid
I = current flowing through the solenoid
Now, it is given to us that the magnitude of magnetic field at a radial distance of s inside the toroid is equal to the magnitude of magnetic field inside the solenoid.
=> [tex]B_{t} =[/tex] [tex]B_{s}[/tex]
=> (μ₀[tex]N_{t}[/tex]I)/(2[tex]\pi[/tex]s) = μ₀[tex]N_{s}[/tex]I
Since it is given that the current is same through both toroid and solenoid, the above equation can be written as -
=> [tex]\frac{N_{t}}{2\pi s} =N_{s}[/tex]
[tex]= > \frac{300}{2\pi s} =400\\= > 800\pi s=300\\= > s = \frac{300}{800\pi } \\= > s = 0.11 m\\= > s = 12 cm[/tex]
Thus the radial distance from the center of the toroid is 12 cm such that the magnitude of magnetic field through the toroid is equal to that found inside the solenoid.
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based on current evidence, a supercluster is most likely to have formed in regions of space where .
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Based on current evidence, a supercluster is most likely to have formed in regions of space where the density of dark matter was slightly higher than average when the universe was very young.
The density of a substance is the connection between the mass of the substance and what sort of space it takes up (quantity). The mass of atoms, their length, and how they may be organized decide the density of a substance.
Density is a vital concept because it lets us decide what materials will drift and what substances will sink whilst positioned in a liquid.
Altitude and climate structures can alternate the air's strain. As you move better, the air's strain decreases from around 1,000 millibars at sea level to 500 millibars at around 18,000 ft.
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a 4.5-kg, three legged stool supports a 86-kg person. if each leg of the stool has a cross-sectional diameter of 2.2 cm and the weight of the person is evenly distributed, determine the pressure exerted on the floor by each leg.
Answers
The pressure exerted on the floor by each leg is calculated to be 777,982.5 Pa
As the formula for force is F = mg, therefore;
F = (mass of person + mass of stool) × g
F = (4.5 + 86) × 9.8
F = 886.9 N
This force of 886.9 N is evenly distributed on the three legs
radius, r = d/2
= 2.2 / 2
= 1.1 cm = 0.011 m
The total cross-sectional area of the three legs, A = 3 × pi × r^2
A = 3 × π × 0.011²
A = 0.001140 m²
Pressure due to weight,
P = 886.9 N / 0.001140
P = 777,982.5 Pa
Hence 777,982.5 Pa is the pressure exerted on the floor by each leg
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atomic orbitals developed using quantum mechanics
Answers
The position and wave-like activity of an electron in an atom in terms of both atomic theory and quantum mechanics. This function can be used to determine the likelihood of discovering any atom's electron.
What does the quantum mechanical model mean by an atomic orbital?The area of an atom that an electron is most likely to be in 90% of the time is known as an atomic orbital. According to the Heisenberg uncertainty principle, it is impossible to know an electron's energy and position at the same time.
How are quantum numbers connected to atomic orbitals?Three quantum numbers describe the characteristics of an atomic orbital. Any positive integer can be the main quantum number, n. The average distance between an electron's nucleus and its orbital energy is related to n in general.
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Two guitarists attempt to play the same note of wavelength 6.50 cm at the same time, but one of the instruments is slightly out of tune. Consequently, a 13.0 Hz beat frequency is heard between the two instruments. What were the possible wavelengths of the out-of-tune guitar’s note? Express your answers, separated by commas, in centimeters to three significant figures IN cm
Answers
The possible wavelengths of the out-of-tune guitar are "6.48 cm" and "6.52 cm".
[tex]\lambda_=speed of sound/f[/tex]
[tex]\lambda=343m/s/5293.9Hz(OR) 343m/s/5259.9Hz[/tex]
λ = 6.48 cm (OR) 6.52 cm
Other wavelengths can travel as far as the cosmos due to the inverse relationship between wave frequency and wavelength, however gamma rays have incredibly short wavelengths that are only a small portion of the size of atoms.
Regardless of the medium through which electromagnetic radiation travels, even though it isn't normally stated explicitly, the wavelengths of electromagnetic radiation are frequently represented in terms of the vacuum wavelength.
The wavelength of electromagnetic radiation affects its behavior. The speed of light is equal to wavelength times frequency. Frequency is multiplied by the Planck constant to produce energy. 1/wavelength is the wave number in centimeters. Along with the wavelengths of many parts of the electromagnetic spectrum, a rough estimation of the wavelength size is displayed.
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a 1 mci source of 60co is placed in the center of a cylindrical water-filled tank with an inside diameter of 20 cm and depth of 100 cm. the tank is made of iron with a wall thickness of 1 cm. what is the uncollided flux density at the outer surface of the tank nearest the source? you will need data from appendix d of the course text. making the right assumption(s) simplifies the calculation.
Answers
The uncollided flux density at the outer surface of the tank nearest the source is Ψ• = 3.4 x 10^4 MeV/cm^2.s
In this formula, C represents the source's activity at that precise moment, and 24rCE= is the energy fluence.
We must ascertain what level of activity passes through the shielding since it will diminish when the gamma rays pass through the water and iron.
Using 1.25 MeV as the average 60Co energy will make things simpler. With regard to water and iron, the attenuation coefficients for 1.25 MeV is the energy fluence are 0.06 cm2/g and 0.058 cm2/g, respectively. first figuring out the intensity, then the iron
I = 1 x 10^-3 x 3.3 x 10^10 x e^(-0.06x1.1) x e^-0.058x7.861
I = 2.6x 10^7 Bq
That is what the cylinder is producing. Using a total radius of 11 cm to calculate the uncollided flux density energy fluence
Ψ• = CE/4πr^2 = 2.6 x 10^7 x 2 x 1.25/4π x 11^2
Ψ• = 3.4 x 10^4 MeV/cm^2.s
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A value of 36 mL is a measure of
mass
• length
• density
temperature
• volume
Answers
Answer:
Volume
Explanation:
This is because the unit given (ml) is that of Volume
For the purposes of seeking a theory to explain the formation of the solar system, we identify four major features of our solar system. Which of the following represent these four major features?
- Large bodies in the solar system have orderly motions.
- Planets fall into two major categories (terrestrial and jovian).
- Several exceptions to the general trends stand out.
- Swarms of asteroids and comets populate the solar system.
Answers
Planets fall into two major categories (terrestrial and jovian).
a. Planets can be divided into two main groups.
b. The fusing of hydrogen into helium is how the Sun produces energy.
c. Gravity brought about the solar nebula's collapse.
d. There are a tons of comets and asteroids.
The four main characteristics of the solar system are listed above in the order in which they contributed to its origin.
The majority of planets can be divided into two groups: gaseous giants and other terrestrial planets. As a result of the solar chromosphere's solar winds.
This energy powers the fusion of hydrogen and helium in the sun's core, which powers the sun itself. The solar nebula was a cloud of gases and dust that started to spin on its own, drawing the microscopic particles closer due to gravity. In the solar system, there are around 100 billion comets and asteroids.
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A student is on a boat counting ocean waves. When the boat reaches the crest of a wave, the student starts a stopwatch. When the boat reaches the next trough, he stops the stopwatch, which reads 4.0s. What is the frequency of the waves in HZ
Answers
The frequency of the waves is 0.25 Hz.
We know that the number of complete vibrations of a vibrating particle in one second is called its frequency. Frequency is denoted by f. Again the time period is the time of one complete vibration. Frequency and period are inversely related quantities. The frequency (f) of a wave is the number of full waveforms generated per second. This is the same as the number of repetitions per second or the number of oscillations per second.Time Period (T) is the number of seconds per waveform or the number of seconds per oscillation. It is clear that the frequency and time period are reciprocals.
So, the frequency, f = 1/T
Given time period = 4s
Putting this value in above equation we get f = 0.25 Hz.
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4.0 kg, 36-cm-diameter metal disk, initially at rest, can rotate on an axle along its axis. A steady 3.5 N tangential force is applied to the edge of the disk. Part A What is the disk's angular velocity, in rpm, 4.0 s later?
Answers
The disk's angular velocity for a 4.0 kg, 36-cm-diameter metal disk, initially at rest, can rotate on an axle along its axis is 371.55 rpm.
Given values:
m = 4.0 kg
r = 36 cm = 0.36 m
τ = 3.5 N
The moment of inertia of a disk rotating about its axis is:
I = (0.5) × m × r²
I = (0.5) × 4.0 kg × (0.36 m)²
I = 0.0648 kgm²
The angular acceleration (α) is:
τ = I × α
3.5 = 0.0648 × α
α = 3.5 N / 0.0648
α = 9.72 rad/s²
The final angular velocity (ω) after 4.0 seconds:
ω = ω₀ + α × t
ω = 0 + 9.72 × 4.0 s
ω = 38.89 rad/s
Convert angular velocity into RPM:
1 revolution = 2π radians
1 minute = 60 seconds
RPM = ω / (2π) × 60
RPM = 38.89 / (2π) × 60
RPM = 371.55 rpm
Hence, the disk's angular velocity for a 4.0 kg, 36-cm-diameter metal disk, initially at rest, can rotate on an axle along its axis is 371.55 rpm.
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The velocity of a particle traveling along an axis is given. Near what time is the instantaneous acceleration equal to 0?.
Answers
When the velocity of a particle moving along an axis is known, the instantaneous acceleration equal to zero is given as 0.6t.
What is the formula for immediate acceleration?We estimate the average speed between two places in time separated by t while allowing t to decrease. The outcome is the velocity function's derivative, v. (t).
The slope of the tangent line to the graph at any given location on the graph corresponds to the instantaneous acceleration there. The instantaneous acceleration of the particle is equal to 0 when this line is horizontal and has a slope of 0. According to the plot, these times correlate to the velocity function's extrema, which can be found at t = 1.75, 2.75, 3.25, and for all t = 4.
t = 0.6 is the most likely choice.
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How long will it take this wave to travel 3000 m in the x-direction? 0. 42 seconds 2. 0 seconds 2. 4 seconds 4. 8 seconds.
Answers
The wave's period T is defined as the amount of time it takes for one crest to cover this distance. The distance to a crest is known as the wave speed (or phase velocity).
How far does each period of a wave go?A pulse in a periodic wave moves over a distance of one wavelength in a period of time T. The speed v of the wave can be expressed in terms of these quantities. This relationship holds true for any periodic wave.
Which change will decrease the speed of a sound wave traveling through a gaseous matter quizlet?Which change will decrease the speed of a sound wave traveling through a gaseous matter? deceasing the temperature. An FM radio station broadcasts at 9.23 × 107 Hz.
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the strength of coercive power depends solely on the magnitude of the punishment that can be administered.
Answers
The severity of the punishment multiplied by the discrepancy between the chance of punishment for noncompliance and the frequency of punishment for compliance determines the coercive power.
What is the unit of magnitude?Units of m is the mass length along time squared are used to express the strength of a force. The most used unit in metric measurements is the newton (N), which is equal to one kilogram times one meter over one second squared.
How is magnitude measured?The Moment Basic Measurements is used today to measure the magnitude of earthquakes (MMS). The fault's rock movement is measured using MMS. Broader earthquakes, which can persist for minutes, cover a much larger region, and inflict more damage, are properly measured by it. However, intensity reflects the level of shaking brought on by an earthquakes at a specific location and diminishes with distance first from epicentre.
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d. f3 should be similar for most vowels, but not all. for which vowels is f3 noticeably different than the rest? (
Answers
Vowels are pronounced from back to front, increasing the frequency of the second formant. For front vowels like I and rear vowels like [u], the second formant (f2) is more frequent than the other.
How often does a wave occur?The number of a wave's oscillations per unit of time, expressed in hertz, is what is known as frequency (Hz). The relationship between pitch and frequency is straightforward.
Who or what uses frequency?When describing the temporal rate of change seen in oscillatory and periodic phenomena like mechanical vibrations, audio signals (sound), radio waves, and light, frequency is a crucial metric utilized in science and engineering.
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what is example of energy in the form of motion
Answers
Answer:
The wind is an example of motion energy. A dramatic example of motion energy is a car crash—a car comes to a total stop and releases all of its motion energy at once in an uncontrolled instant.
Explanation:
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A bicycle with 0. 80-m-diameter tires is coasting on a level road at 5. 6 m/s. A small blue dot has been painted on the tread of the rear tire.
Answers
The speed of the blue dot when it is 0.80 m above the road is 11.2 m/s
Calculation1:d = diameter of tire = 0.80 m
r = radius of tire = (0.5) d = (0.5) (0.80) = 0.40 m
v = speed of bicycle = 5.6 m/s
w = angular speed of the tire
Speed of cycle is given as
v = r w
5.6 = (0.40) w
w = 14 rad/s
Radians per second. ω ω = 14 rad/s
Calculation2:
v' = speed of blue dot
Speed blue of dot is given as
v' = v + rw
v' = 5.6 + (0.40) (14)
v' = 11.2 m/s
The speed of the blue dot when it is 0.80 m above the road is 11.2 m/s
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Question:
Express your answer in radians per second. ω ω = 14 rad/s Previous Answers Correct Part B What is the speed of the blue dot when it is 0.80 m above the road?
the best practices being used by firms that excel in project management and have extensive outsourcing experience include: multiple select question.
Answers
long-term outsourcing agreements, fair and incentive-laden contracts, thorough training and team-building exercises, co-location when appropriate, well-defined requirements and procedures, frequent
What is meant by thorough training?Multiple distinct curricula, each of which include a different set of classes, are what is meant by "comprehensive training." One option is to create a comprehensive training course with a single project management curriculum.
Why is in-depth training so crucial?A more effective, competitive, and engaged workforce is essential to your company's financial performance, and dedicated training and development supports that engagement. A company that invests in career development will also see a 93% increase in employee retention.
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What would be the height of the atmosphere if the air density (a) were uniform and (b) decreased linearly to zero with height? Assume that at sea level the air pressure is 1.0 atm and the air density is 1.3 kg/
Answers
The height of the atmosphere would be 7951.33 m.
We are given that,
Pressure = P = 1 atm
Air density = ρ = 1.3 kg/m³
Therefore, the height of the atmosphere when the density is constant can be calculated by,
P = ρ g h
We know that pressure at sea level = 1 atm = 101300 Pa
Thus , putting the values in the above equation,
h = (101300 Pa)/(1.3 kg/m³)(9.8m/s²)
h = 7951.33 m
Therefore, the height of the atmosphere would be 7951.33 m, when the air density is constant.
Note : the correct order of the question is,
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3.(a) What would be the height of the atmosphere if the air density were constant?(b) What would be the height of the atmosphere if the air density decreased linearly to zero with height?
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can someone please help me find velocity?
Answers
Answer:
b
Explanation:
allows someone to run longer after a few weeks of traing results from what changes at the cellular levle
Answers
Initially, cellular-level adjustments arise interior of our frame while we exercise. Exertion spurs our frame to produce greater mitochondria inside our muscle cells. Mitochondria are known as the powerhouses of cells because they create fuel out of glucose from the meals we eat and oxygen from the air we breathe.
Staying power education modifies these sluggish fibers to make them even greater efficient by way of producing greater mitochondria to permit more aerobic metabolism and more ATP production. patience exercise can also increase the amount of myoglobin in a cell, as elevated aerobic respiration increases the need for oxygen.
Moreover, the study observed evidence that exercise may inspire cells to make greater RNA copies of genes coding for mitochondrial proteins and might boom the ribosome's ability to make mitochondrial proteins. when a muscle contracts, the muscle cells produce and launch molecules known as myokines.
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(fill in the blank) is the use of reliable knowledge for a practical purpose. (fill in the blank) is the study of the natural world through observation and experimentation. reset next
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Technology is the use of reliable knowledge for practical purposes.
Ecology is the study of the natural world through observation and experimentation.
Technology refers to the application of scientific knowledge for practical purposes. This is how science and technology are connected. Scientific knowledge develops through observations about the natural world. Observations can raise scientific questions that can lead to hypotheses.
The hypothesis can be tested by experiment. Experimental results lead to changes in scientific knowledge. Science is any body of knowledge dealing with the physical world and its phenomena that requires unbiased observation and systematic experimentation. To be reliable experimental observations must be reproducible.
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Answer:
Second one is Science
Explanation:
The electric potential along the x-axis is V=100e−2xV, where x is in meters.
A) What IS E(x) at x=1.0 m?
B) What is E(x) at x=1.6m?
Express your answer to two significant figures and include the appropriate units.
Answers
A. The electric field E(x) at x = 1.0 m is 27.07 V/m
B. The electric field E(x) at x = 1.6 m is 8.15 V/m
What is electric potential?Electric potential is work done in moving a unit charge from one point to the other.
What is electric field?Electric field is the ofrce per unit charge acting at a point in an electric field.
A) What Is E(x) at x = 1.0 m?Given that the electric potential V = 100e⁻²ˣ V, the electric field is given by
E = -dV/dx = -d100e⁻²ˣ/dx
= -100de⁻²ˣ/dx
= -100 × -2 × e⁻²ˣ
= 200e⁻²ˣ
Since we require the electric field at x = 1.0nm, substituting the value of x = 1.0 into the equation, we have
E(x) = 200e⁻²ˣ
E(1.0) = 200e⁻²⁽¹⁾
E(1.0) = 200e⁻²
E(1.0) = 200/e²
E(1.0) = 200/7.3891
E(1.0) = 27.07 V/m
So, E(1.0) = 27.07 V/m
B) What Is E(x) at x = 1.6 m?Given that V = 100e⁻²ˣ V, the electric field is given by
E = -dV/dx = -d100e⁻²ˣ/dx
= -100de⁻²ˣ/dx
= -100 × -2 × e⁻²ˣ
= 200e⁻²ˣ
Since we require the electric field at x = 1.6 m, substituting the value of x = 1.6 into the equation, we have
E(x) = 200e⁻²ˣ
E(1.6) = 200e⁻²⁽¹°⁶⁾
E(1.6) = 200e⁻³°²
E(1.6) = 200/e³°²
E(1.6) = 200/24.533
E(1.6) = 8.15 V/m
So, E(1.6) = 8.15 V/m
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