An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon? A. 12.24 N
B. 20 N
C. 1,176 N
D. 196 N User: A man standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down the man continues moving forward at the original speed. This is an example of the effect of
A. velocity.
B. gravity.
C. weight.
D. inertia.

Answers

Answer 1

Answer:
Well first of all, if the object's mass is 120 kg, then its mass is 120 kg.
It makes no difference where it happens to be located at the moment.
Its mass is 120 kg. Period. It doesn't change.

Weight = (mass) x (acceleration of gravity) .

Acceleration of gravity on the moon is 1.622 m/s² (rounded) .

Weight of the object = (120 kg) x (1.622 m/s²) = 194.6 Newtons.
(about 43.8 pounds)

The nearest choice is D). 196 N.

===========================================

When the bus starts moving forward, the man remains still.
He leans back, and soon catches up.

When the bus is moving but begins to slow down, the man
continues moving forward at the same speed. He leans forward,
until the bus stops, and then he eventually stops.

The simplest way to explain this (although it doesn't tell you much)
is to invoke 'inertia'. 'D' is the choice of the choices.

Answer 2

Answer: For first question, Gravity is approximately up to 1/6 of Earth's gravity. So object's weight 1200/6=200 N. So answer shall be D.

For second question, intertia is the thing that described in the question. Answer is D.

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The energies of two photons you might detect emitted by hydrogen atoms are 10.2 and 2.1 eV. Which photon has the longest wavelength? A.) the 10 eV photonB.) They both have the same wavelength
C.) the 2.1 eV photon

Answers

Answer: C

Explanation: it is C

Elaborate on the reason(s) that matter is said to move even as in a solid state.A) The particles are bound through intermolecular forces but are able to move past each other with relative freedom.
B) The particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe.
C) The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
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Brad and Matt are working in the lab. They noticed that when they mixed two dilute solutions together, the reaction between them happened very slowly. Which of Matt's suggestions would BEST help to increase the rate of this reaction?

A) increase the concentration of both solutions
B) decrease the concentration of both solutions
C) increase the concentration of one of the solutions
D) decrease the concentration of one of the solutions

Identify the correct order of increasing intermolecular force of attraction for the three most common states of matter.
A) liquid → solid → gas
B) solid → liquid → gas
C) gas → liquid → solid
D) gas → solid → liquid

Answers

1) The correct answer is
C) The particles are not able to move out of their positions relative to one another, but do have small vibrational movements.
In solids, in fact, particles are bound together so they cannot move freely. However, they can move around their fixed position with small vibrational movements, whose intensity depends on the temperature of the substance (the higher the temperature, the more intense the vibrations). For this reason, we say that matter moves also in solid state.

2) The correct answer is
A) increase the concentration of both solutions
In fact, when we increase the concentration of both solutions, we increase the number of particles that react in both solutions; as a result, the speed of the reaction will increase.

3) The correct answer is
C) gas → liquid → solid
In gases, in fact, particles are basically free to move, so the intermolecular forces of attraction are almost negligible. In liquids, particles are still able to move, however the intermolecular forces of attraction are stronger than in gases. Finally, in solids, particles are bound together, so they are not free to move and the intermolecular forces of attraction are very strong.

Paula spots a glider located at an angle of elevation of 42 degrees. the distance between the glider and paula is 3280 feet. to the nearest foot, what is the height of the glider h from the ground?

Answers

This situation represents triangle with one angle of 90 degrees. That angle is directly below glider. That means that we can you basic trigonometry functions.

sin42 = h/3280

Now we express h.
h = 3280* sin42
h = 2195 feet

The answer is 2195 feet.

distance = 3280 feet. This is the triangle's hypotenuse.

The distance from the ground is the opposite side as it is opposite the angle 42˚

Sin = Opposite/Hypotenuse

Sin(42) = Opposite/3280 Answer: 2195 feet

Cross multiply

Opposite = sin(42) x 3280

Opposite = 2194.7 feet

What is the relation between Kilowatt-hour and joule ?

Answers

Answer: The relationship between " kWh " and " Joules " are :

1 kWh=1000 Watt×[60×60] seconds

1 kWh=10

W×3600 s

1 kWh=3.6×10

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Answers

Answer:

Reflecting telescope

Explanation:

A concave mirror is used to concentrate the light falling on it.

A concave mirror of large focal length acts as a reflecting type telescope.

As the rays of light coming from distant object falls on it, then after reflection the rays concentrate at the focus of the concave mirror and then we see the clear image of the distant object.

Reflecting telescopes

Examples of the period, frequency, speed of a wave in a sentence?

Answers

Hi There! :)

Examples of the period, frequency, speed of a wave in a sentence?

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