Short wavelengths have high frequencies compared to long wavelengths, which are the opposite.
If the frequency is increased, what happens?These equations may lead you to the conclusion that as frequency increases, wavelength decreases. As the frequency decreases, the wavelength grows longer. Electromagnetic and mechanical waves fall into the two main categories.
How do you know which frequency is greater?The frequency of a wave can be determined by counting the number of wave crests (high points) that pass the fixed point in one second or in any other time period. As the number rises, the waves' frequency rises as well.
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A bullet of mass 7.5 g that is moving at a speed of 483 m/s embeds itself into a tree, penetrating 19.4 cm into the wood.What is the magnitude of the average force, in N, exerted by the tree on the bullet? sig.gif?tid=4T78-AC-85-4A-844D-22357F =
The average force by which the bullet will hit the tree is F = 4.50945 × [tex]10^4[/tex] N .
Given : mass of the bullet = 7.5 gram
u or intial velocity = 483 m/s
v or final velocity = 0 m/s
h or height = 19.4 cm
v² = 2as + u²
0 = 38.8 a + 483 × 483
- 483 × 483/ 38.8 = a
thus acceleration = 6012.6 m/s²
F = ma
Thus on substituting the values we get
F = 7.5 × 6012.6
F = 45,094.5 N
or
F = 4.50945 × [tex]10^4[/tex] N
The magnitude of the average force is F = 4.50945 × [tex]10^4[/tex] N .
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why would it be advantageous to use super conductor in MRI machine?
Advantages of superconducting MRI systems include better performance, the highest temporal and spatial homogeneity of the magnetic field, high signal-to-noise ratio (SNR), the shortest scan time, and the highest patient throughput.
What is MRI?
Radiologists employ magnetic resonance imaging (MRI) as a medical imaging technology to create images of the body's anatomy and physiological functions.
Strong magnetic fields, magnetic field gradients, and radio waves are used in MRI scanners to provide images of the body's organs.
MRI differs from CT and PET scans in that it does not utilize X-rays or ionizing radiation. Nuclear magnetic resonance (NMR) has several medical applications, including MRI.
NMR can also be used for imaging in other NMR applications, like NMR spectroscopy.
In hospitals and clinics, MRI is frequently used for disease staging, diagnosis, and follow-up.
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name five (5) keys to a successful strategic partnership (note: there are more than 5, but you only need to identify any 5) (note: you don't have to describe them, only name them)
The (5) keys to a successful strategic partnership are:
-Creating trust
- Have shared vision and objectives
-There should be personal relationships
-Mutual benefits and needs
-Total commitment and top management support
What are the The (5) keys to a successful strategic partnership about?Strategic Partnership is Important for attaining competitive performance that benefits both the buyer and the supplier, as well as a strategic position as opposed to a tactical one
Successful strategic partnerships need both sides to commit over an extended period of time to working together for their mutual advantage, exchanging pertinent information and the risks and rewards of the connection.
Therefore, Partners are more ready to cooperate, find compromise solutions to issues, work toward obtaining long-term advantages for both parties, and go above and above when there is trust between them. It is essential for both spouses to have a common vision and mutually accepted goals.
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the unit of work is the _______.
The unit of work is the Joules.
What is work?Work is a measure of energy expended in moving an object; most commonly, force times distance. It is said that no work is done if the object does not move.
Joules is the International System of Units (S.I unit) and the derived unit of energy, work and heat. It represents the work required to exert a force of one newton for a distance of one metre. Joules has a symbol J.
Joules is a unit named in honour of the English physicist James Prescott Joule and it equals 10⁷ ergs, or approximately 0.7377 foot-pounds.
Based on the above, it can be said that joules (J) is the unit of work.
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A body falls freely from rest on Earth [tex](g=-10 \mathrm{~m} / \mathrm{s}[/tex] )
1. The displacement at [tex]t=3 \mathrm{~s}[/tex] is
The displacement of the body falling freely from rest after t = 3 s is 45 m.
What is displacement?The displacement is simply the difference in the position of the two marks and is independent of the path taken when traveling between the two marks.
To calculate the displacement of the body, we use the formula below.
Formula:
s = ut+gt²/2Where:
s = Displacement of the objectt = Timeg = Acceleration due to gravityu = Initial velocityFrom the question,
Given:
u = 0 m/st = 3 sg = 10 m/s²Substitute these values into equation 1
s = (0×t)+(10×3²)/2s = 45 mHence, the displacement of the body is 45 m.
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what characteristics must earth's core have to generate a magnetic field?
Other molten metals such as iron. A magnetic field is produced when electrical charges pass through the Earth as a result of the Earth's spin, which also causes the core to spin.
What is magnetic field ?
It usually represents the region around the magnet where its force can be felt. We use the magnetic field as a tool to describe how the magnetic force is distributed in the space around and within something magnetic in nature.
A planet must fulfil three conditions in order to produce a magnetic field: 1) a molten, electrically conducting interior; 2) convection in the interior; and 3) a moderately rapid rotation. This sets up a process that is somewhat similar to a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy. Of the four terrestrial planets, Earth has the strongest magnetic field.
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a student is riding a ferris wheel that moves at a constant tangential speed around a vertical circular path of radius r, as shown in figure 1. the student is sitting on a scale. at the instant the moving student is located at point p, the scale exerts a force of magnitude fscale on the student and earth exerts a force of magnitude fgravity on the student, as shown in the free-body diagram in figure 2. which of the following statements provides reasoning that supports and correctly identifies the magnitude of the force that the student exerts on the scale when the student is at point p ?
Answer:B
Explanation:According to newtons 3rd law, the forces must be equivalent
a wiggle in time is a
Answer:
A wiggle in time is called vibration. A wiggle in space and time is called wave. A wave is disturbance over the space. Distinguish between the propagation of sound waves and the propagation of light waves. Sound waves are mechanical waves.
TRUE/FALSE. initial discovery of radioactivity and how it was thought to be the same as another type of light energy emission
Initial discovery of radioactivity and how it was thought to be the same as another type of light energy emission is true statement.
Henri Becquerel made the initial discovery of radioactivity. She investigated the characteristics of x-rays, which Wilhelm Roentgen had discovered in 1895, using naturally fluorescent minerals. In the belief that the uranium would absorb the sun's energy and then release it as x-rays, he placed potassium uranyl sulphate on photographic plates covered in black paper and exposed them to the sun.A study released earlier this month by the Global Carbon Project (GCP), a team of scientists who monitor emissions, predicts that CO2 emissions will increase by 4 point 9 percent in 2021 compared to the previous year.
Due to the COVID-19 pandemic and related lockdowns, emissions decreased by 5 point 4 percent in 2020.
With a 40% share and increasing, the energy sector remains the main source of greenhouse gas emissions.
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PLS HELP I ONLY HAVE 2 MINUTES PLEASE ONLY ANSWER IF YOU KNOW THE RIGHT ANSWER
_____ are the main form of fuel that is burned today in automobiles, industrial plants, and homes.
Carbon Monoxides
Nitrogen Oxides
Sulfur Oxides
Hydrocarbons
Answer:
Hydrocarbons
Explanation:
quizlet
FILL IN THE BLANK. power supplies all provide the same voltages to a system, such as 3.3v, 5v, and 12v. each of these can be referred to as a___, because each one comes from a specific tap within the power supply.
Linear regulated because each one comes from a specific tap within the power supply.
What are the four power supply stages?The four main processes shown in a block diagram of a regulated DC power supply are step down transformation, rectification, DC filtration, and regulation. Unregulated power supply and regulated power supply are the two categories that define DC power supply designs. The controlled power supply can be switched or linearly regulated.
What three types of power supplies are there?Battery-based, switched, or linear? Regulated power sources can be divided into three categories: battery-based, switching, and linear. Although switching and battery power have advantages, linear is the least complex of the three fundamental regulated power supply systems.
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when a movie on a film is projected
A specific number of frames per minute are processed by the projector when a motion picture on film is shown.
What is motion and example?Motion is indeed the open borders of a body in relation to time. For instance, the fan, the carpet's dust blowing off of it, the water running from the taps, a ball rolling about, a moving car, etc. Even for the universe is always changing.
Why do you mean by motion?Movement, the act of process of changing or shifting locations or positions. ability to move with the force of a physical human. gait is the term for the way a person walks. a gesture; a movement or shift in posture.
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Which type of mass movement do you think is the least dangerous. Explain your answer!
It is a sluggish, protracted mass movement called creep soil.
What forms of mass movements are there?Creep, Fall, Slip, Flow, Solifluction, Rock Glaciers, Slumping (Earthflow), Mudflow (Lahar), Debris Flow, Debris Slide, Debris Avalanche, Rockslide, Rockfall, and Debris Fall are a few examples of mass movement types.
What kind of mass movement occurs gradually?The very slow, frequently continuous migration of regolith down slope is known as creep. Almost all slopes experience creep, but the rates vary.
Which kind of mass mobilization is the most harmful?A landslide is the most harmful kind of mass movement and happens when rock and dirt suddenly slip down a steep slope.
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Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of the following directions? (A) Downward(B) Northward(C) Westward(D) Southeastward
it tend to deflect if its velocity is in Westward direction.
What does an electrical deflection mean?An electric field that is supplied transverse to the route of the particles can be used to change the trajectory of a stream of charged particles, a process known as electrostatic deflection.
In physics, what does deflection mean?Deflection in physics is the modification of a moving object's velocity and, consequently, trajectory due to contact (collision) with a surface or the action of a non-contact force field.
What's an illustration of deflection?When someone switches the subject in the middle of a discussion, that is one of the most prevalent instances of deflection. In particular, the deflector will refocus the discourse to center on something the other person did incorrectly if their behavior is questioned.
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PRELAB: A MODEL FOR CIRCUITS III: CAPACITORS AND RC CIRCUITS
1. Predict the change in capacitance of a parallel plate capacitor as the area of the plates is increased.
2. Predict the change in capacitance of a parallel plate capacitor as the separation between the plates is increased.
3. Briefly describe the observations you will make in Activity 1-2 of the lab to test one of these two predictions.
4. If you have two identical capacitors, what do you predict will be the capacitance of the two connected in parallel?
5. Briefly describe the observations you will make in Activity 2-1 of the lab to test this prediction.
6. What devices will you use to measure the decay of voltage in an RC circuit?
A parallel plate capacitor has a capacitance of C=fracepsilon_0 Ad, where A is the area of the plates and d is the distance between them. 1) If the area of the plates A_1 grows, then A_1>A C_1=fracepsilon_0 A_1d>fracepsilon_0 Ad C_1>C, which means that the capacitance also grows.
2) If the distance between the plates is increased by d_1, the capacitance decreases because d_1>d C_1=fracepsilon_0 Ad_1 fracepsilon_0 Ad C_1C.
3) Since capacitance is directly proportional to plate area, capacitance also increases with plate area.
Because capacitance is inversely proportional to plate separation, capacitance decreases as plate separation increases.
4) When two identical capacitors are connected in parallel, their equivalent capacitance is C_1 C_1=C+C=2C. 6) The Voltmeter is the device used to measure the voltage decay in an RC circuit.
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specific features are created using scrum methodology according to four distinct phases. which of the following places these phases in the correct order?
Analysis, Design, Build, Test is the correct order specific features are created using scrum methodology according to four distinct phases
Explain the distinct phase of force.A force that is applied to an object by a person or another object is referred to as an applied force. When someone pushes a desk across the room, there is an applied force acting on the object. The applied force is the force that the person exerts on the desk. The force of gravity is the attraction that the earth, moon, or other enormously large object has on another object. The normal force is the force exerted by one object in contact with another stable object. The friction force is the force exerted by a surface when an object moves or attempts to move across it.
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you have three light bulbs; bulb a has a resistance of 240 q, bulb b has a resistance of 192 q, and bulb c has a resistance of 144 q. each of these bulbs is used for the same amount of time in a setup like that in the drawing. in each case the speed of the rod and the magnetic field strength are the same. rank the setups in descending order, according to how much work the hand in the drawing must do (largest amount of work first).
The correct sequence will be: A, B, C
Given,
Resistance A = 240 Ω
Resistance B = 192 Ω
Resistance C = 144 Ω
We know that the resistance has relations with Current (I) and Voltage (v)
But to find the work done by the hand,
We will apply the formula of the work,
W = VIt
Replacing V with R/I
Work = (R/I)*I*t
Work= R*t
The time given is same.
So here,
Work = Resistance,
By this derivation, the highest resistance will do the highest amount of work.
Therefore, the work done by Resistance A will be the most and then the work by resistance B and then the work by resistance C.
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What can I do to make this less expensive, with less cargo damage, and with a sturdy shell condition? Anything less than the amount shown in the image.
The external part of the shell is made of fiberglass. This is probably very expensive. The production team of the above product should experiment with Graphene.
Why should Graphene be considered for the above project?It should be highlighted that graphene is already being utilized in transportation, medical, electronics, energy, defense, and desalination; graphene research is having a significant influence across a wide variety of sectors.
To put things in perspective, one square meter of normal paper is 1000 times heavier than graphene, while a single sheet of graphene large enough to cover a football field weighs less than a gram. Strongest. With a tensile strength of 150,000,000 psi, graphene outperforms steel and Kevlar.
Graphene, a single sheet of carbon atoms, has been hailed as the strongest substance known to man, 200 times stronger than steel, lighter than paper, and with amazing mechanical and electrical capabilities.
Given that graphene is formed of carbon, and carbon is in plentiful supply, it will very certainly be less expensive than fiberglass.
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an earth satellite of mass 500.0-kg is in a circular orbit at an altitude of 300 km above the earth's surface. the earth radius is 6380km, and the earth mass is 5.98 1024kg.
The speed of the satellite of mass 500.0-kg is in a circular orbit at an altitude of 300 km above the earth's surface is 7726.58 m / s
Fc = m v² / r
Fg = G M m / r²
Fc = Centripetal force
m = Mass
v = Tangential Velocity
r = Distance
Fg = Gravitational force
G = Gravitational constant
M, m = Masses
The rotational motion of the satellite is due to the gravitational force of Earth.
Fc = Fg
m v² / r = G M m / r²
v² = G M / r
v² = 6.67 * 10⁻¹¹ * 5.98 * 10²⁴ / ( 6380000 + 300000 )
v² = 39.89 * 10¹³ / 6680000
v² = 59.7 * 10⁶
v = 7726.58 m / s
Therefore, the speed of the satellite is 7726.58 m / s
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Problem 12.41 9 of 9 Review A 50 g mass rotates in a vertical plane--call it the xy-plane with the y-axis pointing up--at the end of a 75-cm-long, massless, rigid rod. The other end of the rod is attached to a frictionless pivot at the origin. Part A What is the gravitational torque about the pivot when the mass is 60° above the +x-axis? Give your answer using unit vectors. Express your answer in newton-meters. Enter components of torque, separated by comma. IVO AE ? Tx, Ty,Tz = N·m Submit Request Answer
The value of gravitational torque after solving the expression will be equal to -0.18375 N.mz.
What is Torque?The rotating equivalent of a force in physics or mechanics is called torque. Depending on the topic matter, it may also be referred to as the moment, point in time of force, rotating force, or turning effect. It symbolizes a force's capacity to cause a change inside the bodies natural rotational motion.
As per the given information in the question,
Mass, m = 50 g
Length, l = 75 cm
Gravitational force, [tex]\vec F[/tex] = -mgy
Then, the position vector of the particle will be,
[tex]\vec \tau[/tex] = l(cos 60° x + sin 60° y) × (-mgz)
= -0.18375 N.mz
Therefore,
[tex]\tau_x, \tau_y,\tau_z=0, 0, -0.18375[/tex]
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which statement best describes what happens during this process?
The opposite charges are pulled away in solution and become free. Option D
What is solvation?We know that when we add an ionic substance into water that the ionic substances would become dissolved in the water. The meaning of this is that the ions that are in the substance would be drawn apart by the molecules of water. The process that makes the ions to be drawn apart by water is what we call solvation.
Now when there is solvation, we would notice that the positive end of the water dipole would surround the negative ion and the negative part of the water dipole would surround the positive ion.
Here we can see that the chloride ion is surrounded as such as so also is the potassium ion. This would lead to the pulling apart of the ions by the water and they become free in solution.
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An element with 19 protons and 19 electrons gains one electron and results in what species?.
Potassium atoms have one valence electron in the outer shell, 19 protons, and 19 electrons. According to the periodic chart, sodium, the alkali metal above potassium, is thought to be chemically similar to potassium.
Which of the following best describes an atom made up of 21 neutrons, 19 protons, and 19 electrons?Potassium's atomic structure. 19 protons and 21 neutrons make up the nucleus. 19 electrons surround the nucleus, with one extremely unstable electron in the outer shell (ring). The stability of an element's outer electrons governs both its chemical and physical properties.
Which element's atoms' nuclei contain 19 protons?Potassium's most prevalent isotope has a total of 20 neutrons. The stable potassium isotopes.
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Label the photomicrograph of thick skin. Stratum corneum Stratum basale Stratum granulosum Stratum lucidum Epidermis Dermis Stratum spinosum
The Label of the photomicrograph of thick skin is given in the image attached.
What factors affect skin thickness?A significantly thicker epidermis, the skin's top layer, is what gives thick skin its thickness. The stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum—the four top layers of the epidermis—are particularly responsible for the bulk of thick skin.
Therefore, note that Thick skin lacks hairs, sebaceous glands, and apocrine sweat glands and has a thinner dermis than thin skin. Fingertips, palms, and the soles of your feet are examples of places with thick skin because they are frequently subjected to abrasion.
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Two carts on an air track have the same mass and speed and are traveling toward each other. If they collide and stick together, find the total momentum and total kinetic energy of the HINT (a) the total momentum O The final momentum is zero. The final momentum is half the initial momentum. O The final momentum is twice the initial momentum. O There is not enough information to tell. (b) the total kinetic energy O The final kinetic energy is zero. OO The final kinetic energy is half the initial kinetic energy. The final kinetic energy is twice the initial kinetic energy. O There is not enough information to tell. (c) Describe a different colliding system with this same final momentum and kinetic energy.
if they collide and remain united then the. Total momentum of the system is zero.
Total momentum by using the Principle of Momentum Conservation.
mVa-mVa=2Vb
final speed and total momentum of system =zero
p=0
Due to the inellastic impact and the same masses and speeds, the system's total kinetic energy is reduced to zero. Before and after a collision, the total kinetic energy are, respectively:
Ka=mv^2
Kb=0
Momentum is the result of a particle's mass and velocity. A vector quantity with both magnitude and direction is momentum. Isaac Newton's second equation of motion states that the force applied to a particle is equivalent to the time rate of change of momentum.
Any grouping of particles has a momentum equal to the vector sum of their momenta. A modification in one particle's momentum is perfectly balanced by a modification in the momentum of another particle, according to Newton's third law, which states that particles exert equal and opposite forces on one another.
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1. If the area of the circle you draw around the vesicle is 24 pixels what would the value of the radius be in pixels? Show your work. 2. Given your answer to Question 1, and the fact that 1um = 5.179 pixels, convert your radius from pixels to m. Show your work
3. To calculate the effective viscosity, you need to know the efficiency of the vesicle motion Supposing myosin motor proteins are moving the vesicles, what is the decimal value for the efficiency, e? (Hint:It is reported as a percent in the lab manual.)
According to the Hardy-Weinburg principle, if there are no forces driving evolution, then phenotype frequencies of such a particular population should remain stable.
How does vesicle movement work?Vesicle movement observations demonstrate that vesicles travel in a specific direction and that they copurify with kinesin motor activity.
According to the available data, kinesin and retrograde motors attach to the correct vesicle to drive vesicle movements in vivo.
Where do vesicles go?Cargo-filled vesicles are transported along the cytoskeleton by means of special motor proteins that attach to them.Different motor proteins are designed to move certain types of cargo in one direction or another along the cytoskeleton. .
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A 10.00kg ball moving at 1,7m/s collides with a 5.00kg ball at rest. If the velocity of the heavier ball is 3,4m/s after the collision, how much velocity will the lighter ball have?(after the collision)
The velocity of Ball B be after the collision is 3.4m/s.
Please explain the law of conservation of momentum and provide two examples.For a collision between two bodies, in accordance with the law of conservation of momentum. Total kinetic energy prior to impact equals total kinetic energy following impact. m1u1+m2u2=m1v1+m2v2. For instance, a gun will recoil after firing a shot. A certain amount of force is applied when the shot is fired and leaves the barrel.
Using the law of conservation of momentum;
mAuA+ mBuB = mAvA+mBvB
Substitute the given values
10(1.7) + 5(0) = 10(3.4) +5vB
17 + 0 = 34 +5vB
17-34 = 5vB
-17 = 5vB
vB = -3.4
vB =3.4m/s
Hence the velocity of Ball B be after the collision is 3.4m/s.
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Consider a field of insects, all of which have essentially the same mass.
a. If the total momentum of the insects is zero, what does this imply about their motion?
b. If the total kinetic energy of the insects is zero, what does this imply about their motion?
If the total momentum of the insects is zero, this means all of the insects are at rest or are moving in opposite of each other. Same if the total kinetic energy is zero.
What is momentum?Momentum is the quantity of motion which is multiplied by the amount of matter moved i.e., mass and the velocity at which it moves. Because, the object is in motion, it is a vector quantity, it has both direction and magnitude. It is determined by the product of the object's mass and the velocity of object.
If the total momentum of the insects is zero, this could mean anything of the two things. Either, all of the insects are at rest or an equal amount of insects are moving in opposite direction of each other which cancels out the total momentum of the insects.
If the total kinetic energy of the insects is zero, this means either all of the insects are at rest or an equal amount of insects are moving in opposite direction of one another which results into canceling out the energy.
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astronomers can now report that active star formation was going on at a time when the universe was only 20% as old as it is today. when astronomers make such a statement, how can they know what was happening inside galaxies way back then? a.they look at a graph that shows the way galaxy redshifts change with time b.they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find c.they look at radio waves coming from nearby active galaxies d.they look at the elements in comets, which formed when our solar system was first forming e.they look at the open clusters in the milky way galaxy
Astronomers can now report that active star formation was going on at a time when the universe was only 20% as old as it is today. when astronomers make such a statement, they examine the spectra of galaxies (or the overall colors of galaxies) with the highest redshifts they can find.
SO option B is correct.
Who are Astronomers?An astronomer is described as a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth by observing astronomical objects such as stars, planets, moons, comets and galaxies – in either observational or theoretical astronomy.
Astronomers are known to use redshifts to measure how the universe is expanding, and thus to determine the distance to our universe's most distant and therefore oldest objects.
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three balls are in water. ball 1 floats, with half of it exposed above the water level. ball 2, with a density less than the density of water is held below the surface by a cord anchored to the bottom of the container, so that it is fully submerged. ball 3, of same radius as ball 2, but of greater mass, is suspended from a rope so that it is fully submerged.
The correct statement about the ball 1 is the magnitude of buoyancy force is equal to that of ball's weight.
The upward force exerted on an object that is wholly or partially immersed in a fluid is called upthrust.
Ball 1 is floating on water.
Weight of the ball 1 is Fg = m₁g is acting vertically downward.
Force of buoyancy Fb = ρvg is acting vertically upwards
Net force acting on the ball is zero, Fg = Fb
As the ball 1 floats without sinking, it is in equilibrium.
This means that the net downward force is balanced by the net upward force.
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determine the temperature at which the celsius and fahrenheit scales give the same numerical reading (tc
There seems to be one location where the Fahrenheit or Celsius scales meet. At both -40 °C und -40 °F, they are equal.
Why is the Celsius scale so widely used?Because it is used in conjunction with the metric scale, the Fahrenheit scale is more frequently utilized. It makes reasonable that they utilize the Celsius scale as well since the majority of nations use the metric system. It is also simpler to convert from Celsius to Kelvin for this reason.
How is Celsius read?The letters °C or just C can be used to denote temperatures in Celsius as a number of degrees. The temperature difference between boils and ice is 100 degrees Celsius, whereas it is 180 ° Fahrenheit.
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