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Licemer1 [7]
3 years ago
14

Có thể một lực hướng tâm tạo ra công trên một vật hay không? Hãy giải thích

Physics
1 answer:
Verdich [7]3 years ago
8 0

Answer:

Explanation:

Công là sản phẩm của một lực và độ dời theo phương của lực đó. Vì lực hướng tâm luôn tác dụng vuông góc với chuyển động nên Không thể xảy ra công việc nào.

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There are usually _________ collisions in a motor vehicle crash.
mel-nik [20]

Answer:

3

Explanation:

During a crash 3 types of collisions can occur.

5 0
3 years ago
A force of 5.25 newtons acts on an object of a mass 25.5 kilograms. How far is the object from the center of Earth? (The value o
nexus9112 [7]

Answer:

The force between two objects is calculated through the equation,

                       F = Gm₁m₂/d²

where m₁ and m₂ are the masses of the objects. In this case, an unknown mass and Earth. d is the distance between them and G is the universal gravitation constant.

In the second case, if the force is to become 2.5 times the original and all the variables are constant except d then,

                      2.5F = Gm₁m₂ / (D²)

                               D = 0.623d

Subsituting the known value of d,

                               D = 0.623(6.9 x 10^8) = 4.298 x 10^8 m

                         

5 0
1 year ago
Kinetic energy is the energy of motion and increases with the speed of the wave.
hammer [34]
Kinetic energy is movement so A
Potential is still so false
5 0
2 years ago
Does red or green light have more energy.
dalvyx [7]

Answer: Green Light

Explanation:

The color green has a higher frequency than the color red and the higher the frequency the more energy. If you looks at a rainbow you'll see red on one end and violet on the other. Red has the least energy Violet has the most.

7 0
2 years ago
Plsss help I don’t understand this
nekit [7.7K]

B is the correct option.

1. Given eqn;

S(t) = 1/2t² - 4t + 8

2.Differentiate the above eqn with respect to t;

<u>d(S(t))</u> = t - 4

dt

When distance, S, is differentiated it results to velocity.

V = t - 4

at t = 10

V = 10 - 4

V = 6 feet/s

6 0
2 years ago
Read 2 more answers
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