Answer:
temperature is the degree of heat in a item or object and is measured by a thermometer.
Explanation:
If you started counting from 1st grade, how many years of education would the typical professional astronomer have today, at minimum?
12
14
16
18
16 years of education would the typical professional astronomer have today, at minimum
what are the basic qualification needed for astronomer ?Minimum qualifications of Astronomer 4 year degree to get a postgraduate qualification like a master of physics.
2 or 3 A levels of math and physics; 5 GCSEs at grades 9 to 4 (A* to C), or equivalent; and a degree in a field that is useful for postgraduate are needed.
Math and physics expertise needed, analytical thinking abilities, science knowledge, great verbal communication skills, and the capacity to think coherently both logic and reasoning are all essential.
For more details astronomer, visit
brainly.com/question/1003405
#SPJ2
Which of the following has the most kinetic energy?
A.
A car traveling at 80 kph.
B.
A tractor trailer traveling at 80 kph.
C.
A cheetah running at 80 kph.
D.
A notorcycle traveling at 80 kph.
Answer:
B
Explanation:
A tractor is the heaviest
The angle between A = (-25 m)i +(45 m), and the positive e axis is
Answer:
[tex]\theta=119.06^{\circ}[/tex]
Explanation:
The vector is :
A = -25i+45j
We need to find the angle between angle A and the positive x-axis. It can be calculated as follows :
[tex]\theta=180^{\circ}-\tan^{-1} (\dfrac{45}{25})\\\\=180-60.94\\\\=119.06^{\circ}[/tex]
So, the angle of vector A with the +x axis is [tex]119.06^{\circ}[/tex].
At the bottom of a mine shaft, the air
pressure is 138,000 Pa. How deep is
the mine?
(Unit = m)
1 atm = 101300 Pa
Pair = 1.29 kg/m3
Plz help
Answer:2900
Explanation:
I think
give two differences between sextusl reproduction and asextual reproduction
Answer:
Sexual reproduction you need two organisms to reproduce.
Asexual is when you can multiply yourself and there is nothing different about the offspring and the parent.
1.
During parkour, a person leaps at a wall and performs a flip. What must they do to change
directions?
6
Answer:
they push off the wall with a force greater than the wall
Explanation:
The game of parkour involves moving from one point to another and performing several skills which includes flips, especially in a difficult environment.
To change directions, the person must exert a significant force on the wall.
When the person leaps on the wall, it means the person moves or jumps quickly on the wall.
While this is being carried out, the concept of force must be applied.
If the force that acts on a stationary object is smaller than the required force to move the object, the object's position remains unchanged.
This means that for the person's direction to change, the person must exact a great force (or a significant force) enough to cause a change in direction.
Read more about force at:
https://brainly.com/question/19734564
A spacecraft drifts through space at a constant velocity. Suddenly, a gas leak in the side of the spacecraft gives it a constant acceleration in a direction perpendicular to the initial velocity. The orientation of the spacecraft does not change, so the acceleration remains perpendicular to the original direction of the velocity. What is the shape of the path followed by the spacecraft in this situation
Answer: The path will be a parabola.
Explanation: The path is a parabola because the motion described is a projectile motion, in which an object thrown or projected is subjected only to the acceleration.
In this motion, velocity must be constant and horizontal and acceleration is perpendicular compared to the direction of the velocity. In these conditions, the path is a parabola and the motion is a projectile.
How is an electromagnetic field produced? Please I need answers
Answer:
by potential difference and electron gun
Explanation:
a magnetic field is produced whenever an electrical charge is in motion. The spinning and orbiting of the nucleus of an atom produces a magnetic field as does electrical current flowing through a wire. The direction of the spin and orbit determine the direction of the magnetic field.
Answer:
Electromagnetic field can be produced by the superposition of electric field and magnetic field.
Explanation:
What is superposition ?When two or waves propagate in a medium without affecting each other , then at any instant the displacement of a particle will be equal to the vectorial sum of the displacements due to the waves.
Electromagnetic field can be produced by electric arc.It cab be produced by LC Circuits.Hence Electromagnetic field can be produced by L-C CIRCUITS.
For more details , read it too-
https://brainly.com/question/17057080
#SPJ2
A person drives for 1.00 h at 10.0 km/h and 2.00 h at 20.0 km/h. What is their average speed, in SI units?
A. 4.63 m/s
B. 16.7 km/h
C.10.3 mph
D.16.7 m/s
Answer:
answer is d 16.7 m/s
Explanation:
When one person shouts at a football game, the sound intensity level at the center of the field is 69.6 dB. When all the people shout together, the intensity level increases to 103 dB. Assuming that each person generates the same sound intensity at the center of the field, how many people are at the game
Answer:
there are 2188 people at the game
Explanation:
Given the data in the question;
we know that decibel is defined as; dB = 10log(l/l₀)
so if one produces an intensity l₁, it results in 69.6 dB
69.6 = 10log(l₁/l₀) ---- equ1
also. if x number of people produces this intensity, it result to 103 dB
103 = 10log(xl₁/l₀)
103 = 10( log(l₁/l₀) + log(x) )
103 = 10log(l₁/l₀) + 10log(x) ----- equ2
input equation 1 into to equation 2
103 = 69.6 + 10log(x)
10log(x) = 103 - 69.6
10log(x) = 33.4
divide both side by 10
log(x) = 3.34
x = [tex]10^{3.34}[/tex]
x = 2187.76 ≈ 2188
Therefore, there are 2188 people at the game
Shine the flashlight on the liquid sheet. Did you observe evidence that light carries energy
Answer:
Think of an object you have observed ... Work with your group to gather evidence that light carries energy, then answer the questions below. Shine the flashlight on the liquid crystal sheet.
Which diagram is the best model for a solid?
Substance A
Substance B
О Substance C
Answer:
This link was diagram
Explanation:
https://doubtnut.app.link/FnsNC80Dccb
Can heating cooking oil you’ll be classified as producing a chemical change?
yes it is boiling creating bubbles that aren't their originally
Explanation:
When cooking oils are subjected to heat in the presence of air and water (from food), such as in deep-fat frying and sautéing (pan frying), they can undergo at least three chemical changes: 1) oxidation of the fatty acids, 2) polymerization of the fatty acids, and 3) breaking apart of the triglyceride molecules into free fatty acids and glycerol by hydrolysis (reaction with water from the food being cooked) (Choe and Min 2007)
Explain why stones are strong in compression but weak in tension
Answer:
Gigantic towers, monuments and tall structures are always supported by a very thick layer of concrete that’s blended into their foundation. The purpose of this is quite straightforward: nothing provides greater support to a super heavy (and stationary) structure than a layer of concrete. There may be other things that, in theory, could provide a stronger foundation, but they wouldn’t be nearly as cost effective as concrete.
Answer:
Because it has essentially zero strength in tension, it is almost always used as reinforced concrete, a composite material. It is a mixture of sand, aggregate, cement and water.
A3 kg mass takes some impulse in order increase its velocity from 11
m/s to 25 m/s. Calculate the impulse it took.
Answer:
JAKSJAKZNPWLAQJZOAKZONZPW
THE ANSWER IS FAILURE
ELE Review questions
POSSIBLE POINTS: 3
Match the energy transformation sequence with the device it describes:
A hair dryer plugged into the wall
a
A hand crank generator emergency radio
A battery operated fan
11 CE to ELE
+ ELE to KE
:: KE to ELE
h
1
2
A Review
Answer:
1. ELE to KE = Electrical energy conversion to kinetic energy.
2. KE to ELE = kinetic energy conversion to electrical energy.
3. CE to ELE = chemical energy conversion to electrical energy.
Explanation:
The Law of Conservation of Energy states that energy cannot be destroyed but can only be transformed or converted from one form to another.
Some examples of energy are chemical energy, electrical energy, kinetic energy, sound energy, potential energy, light energy, etc.
The transformation of energy from one form to another are described below;
1. A hair dryer plugged into the wall: it involves the conversion of electrical energy to kinetic energy. The energy type present in the wall socket is electrical energy which powers the hair dryer to have kinetic energy i.e the energy possessed due to motion of hair dryer.
2. A hand crank generator emergency radio: it illustrates the conversion of kinetic energy to electrical energy. The hand crank generator possess kinetic energy as it is being wounded before it is then converted into electrical energy which powers the radio.
3. A battery operated fan: it illustrates the conversion of chemical energy to electrical energy. The cells present in battery possess chemical energy that is being converted into electrical energy to power the fan.
Question 11 (1 point)
Anytime there is height, the object must have...
a
kinetic energy
gravitational potential energy
GPE & KPE
C
Od
elastic potential energy
Answer:
gravitational potential energy.
Explanation:
Gravitational potential energy (GPE) can be defined as an energy possessed by an object or body due to its position above the earth surface.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where,
G.P.E represents gravitational potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
This ultimately implies that, anytime there is height, the object must have gravitational potential energy.
Hence, an object possesses gravitational potential energy due to its height (position) and the earth's gravitational force.
how was newton's laws used to solve problems on apollo 13 ship
Explain in two full paragraphs
Answer:
actually ships are made in newtons third law of motion.it states to every action there is equal and opposite reaction. curved is made in downwards to maintain upthrust and to made balance.
actually it prevents ships from drowning and to move with a heavy mass.
When potassium chromate (K2CrO4) is added to a solution containing 0.500 g silver nitrate (AgNO3), solid silver chromate (Ag2CrO4) is formed. a) Determine the chromate precipitate
Answer:
OK id k the names of everything but the quantity would be around 2.22222222222222222222222222222222222222222222222222222222222222222222222222222 ok?
Explanation:
What is the equation of the line that is perpendicular to y= -4x +5 and passes through the point (4,-3)?
7. An electric kettle is connected to a mains voltage of 230 V. The current in the kettle is 12 A. Calculate the power of the kettle
Answer:
2,760watts
Explanation:
Power of the kettle = current * voltage
P = IV
Given
I = 12A
V = 230V
Substitute into the formula
Power of the kettle = 12*230
Power of the kettle = 2,760watts
What provides most of the force to allow the runners to move?
Answer:
When you are running the most important force that you should understand is friction. Friction is a force that opposes movement between two objects, but for runners friction makes you faster. Friction gives you a better and more efficient way to use your energy into speed.
The reaction force provided by the tracks as the runners press their feet against the track provides the maximum force.
What is newtons third law of motion?The newton's third law of motion states that every action has a equal and opposite reaction
Given is to find what force allow the runners to move.
The reaction force provided by the tracks just before the runners start running as they press their feet against the track provides the maximum force.
Therefore, the reaction force provided by the tracks as the runners press their feet against the track provides the maximum force.
To solve more questions on force, visit the link below -
https://brainly.com/question/3952884
#SPJ6
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.0 cm, and the electric field within the capacitor has a magnitude of 2.9 x 106 V/m. What is the kinetic energy of the electron just as it reaches the positive plate
Answer:
K = 4.64 10⁻¹⁵ J
Explanation:
For this exercise we can use conservation of energy
starting point. Next to the negative plate
Em₀ = U = e V
final point. Right when you hit the positive plate
Emf = K = ½ m v²
energy is conserved
Em₀ = Em_f
e V = K
The electric potential is related to the electric field
V = - Ed
we substitute
-e E d = K
let's calculate
K = -1.6 10⁻¹⁹ (-2.9 10⁶) 1.0 10⁻²
K = 4.64 10⁻¹⁵ J
Consider a ball tossed from the ground into the air at 25 m/s. At a later time, the ball is measured to be moving downward at 11 m/s. a) Find how high the ball is off of the ground at the later time. b) Find the time interval between these two events. c) Sketch graphs of position, velocity, and acceleration versus time for the ball.
Answer:
The answer is below
Explanation:
a) According to Newton's law of motion, the distance travelled by a body going upward can be calculated using the formula:
v² = u² - 2gh
where v is the final velocity, u is the initial velocity, g is the acceleration due to gravity and h is the height of the ball.
g = 10 m/s², u = 25 m/s, v = 11 m/s
Substituting:
11² = 25² - 2(10)h
20h = 25² - 11²
20h = 504
h = 25.2 m
b) The time (t) can be gotten using:
v = u - gt
Substituting
11 = 25 - 10t
10t = 25 - 11
10t = 14
t = 1.4 s
c) the graph were plotted using an online graphing tool
How does the energy in a system of magnets change when two magnets repel and move away from each other
Does the Sun actually turn dark during a total solar eclipse? Why or why not?
Answer:
No
Explanation:
The moon is just casting a shadow on the earth
Answer:
The sun does not turn dark during a solar eclipse because during a solar eclipse the moon covers the sun.
Explanation:
- What is the mass of a bowling ball that weights 80 Newtons on Earth?
(17 Points)
8 kg
80 kg
800 kg
Answer:
800 kg
Explanation:
Review. As it passes over Grand Bahama Island, the eye of a hurricane is moving in a direction 60.08 north of west with a speed of 41.0 km/h. (a) What is the unit-vector expression for the velocity of the hurricane
Answer:
Velocity = -20.45 i + 35.54 j km/h
Explanation:
given data
speed v = 41.0 km/h
direction = 60.08 north of west
solution
first we get here Speed in west direction that is express as
Speed in west direction = v × cos(60.08) ..........................1
Speed in west direction = 41 × cos(60.08)
Speed in west direction = 20.45 km/h
now we get Speed in north direction that is
Speed in north direction = v × sin(60.08) ............................2
Speed in north direction = 41 × sin(60.08)
Speed in north direction = 35.54 km/h
so Velocity will be here
Velocity = -20.45 i + 35.54 j km/h
Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 20 cm in diameter, separated by 1.0 cm. How much charge can be added to each of the plates before a spark jumps between the two plates? For such flat electrodes, the field that causes a spark is at the high end of the range pre- sented in the chapter; assume a value of 3 * 106 N/C.
Answer:
Q = 0.83 μC
Explanation:
Assuming that plates are much larger than the distance between them, we can think the electric field as constant and perpendicular to the outer surface of the plates.Applying Gauss' law to a rectangular surface half inside one of the plates and half outside it, since E and A are parallel each other, and E is zero on the other three faces, we can find the following expression for the electric field created by the charge on the plate:[tex]E = \frac{Q*A}{\epsilon_{0} } (1)[/tex]
Solving for Q, replacing E by the maximum electric field that doesn't cause the dielectric strength to break (3*10⁶ N/C), we get:[tex]Q_{max} = E_{max} * \pi *\frac{d^{2}}{4} *\epsilon_{0} = 3e6N/C*\pi *\frac{(0.2m)^{2} }{4} * 8.85e-12C2/Nm2 = 0.83\mu C (2)[/tex]
Describe 2 characteristics of the spring tide. *
Answer:
Spring tide, tide of maximal range, near the time of new and full moon when the Sun and Moon are in syzygy—i.e., aligned with the Earth. ... In either case of syzygy, the tide-producing forces of the Sun and the Moon reinforce each other, and the tidal amplitudes on Earth are at their greatest.
