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Tems11 [23]
3 years ago
14

What is the thermal energy of an object?

Physics
1 answer:
mr Goodwill [35]3 years ago
5 0
The thermal energy of an object is the energy contained in the motion and vibration of its molecules. Thermal energy is measured through temperature. The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.
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A racing car going a 20 m/s stops in a distance of 20 m.What is its acceleration?​
aleksklad [387]

step by step

formular v^2 = u^2+2as

stop v = 0

0 = 400+2a(20)

-400=40a

a = -10 m/s^2

ans affect acceleration is 10 m/s^2

3 0
3 years ago
An object is moving with constant non-zero velocity. Which of thw following statements about it must be true
hram777 [196]

Answer:

The net force on the object is zero.

Explanation:

An object is moving with constant non-zero velocity. If velocity is constant, it means that the change in velocity is equal to 0. As a result, acceleration of the object is equal to 0. Net force is the product of mass and acceleration. Hence, the correct option is (d) "The net force on the object is zero".

5 0
3 years ago
A block is placed on an inclined plane with an angle of inclination θ (in degrees) with respect to horizontal. The coefficient o
hjlf

Answer:

The maximum value of θ that will cause the block to remain stationary on the inclined surface is 21.8°

Explanation:

Given;

coefficient of static friction, μ = 0.4

for the block to remain stationary on the inclined plane, force pushing the block upward must be equal to the force acting downwards.

μR = mgsinθ

μmgcosθ = mgsinθ

μcosθ = sinθ

μ = sinθ/cosθ

μ = tanθ

θ = tan⁻¹(0.4) = 21.8°

Therefore, the maximum value of θ that will cause the block to remain stationary on the inclined surface is 21.8°

6 0
3 years ago
B.
Elan Coil [88]

Answer b c

Explanation:

i think those are the best answers

3 0
2 years ago
Which of the following could be used to convert chemical energy to heat energy?
Mandarinka [93]

Answer:

C

Explanation:

Inside a battery there are chemical reactions. When the battery is powering a flashlight, this chemical energy gives a heat one.

3 0
3 years ago
Read 2 more answers
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