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zavuch27 [327]
3 years ago
12

Can an object contain heat? Why or why not?

Physics
1 answer:
Stells [14]3 years ago
8 0
Every object has thermal energy (better word than heat, since we associate that with high temperatures). This is actually the molecules vibrating, moving a lot. More thermal energy means more vibrating, and thus also expanding in volume.
You might be interested in
An ideal incompressible fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the
grandymaker [24]

Answer:

d) 3 m/s

Explanation:

As we know by equation of continuity

A_1v_1 = A_2v_2

here we have

A_1 = \pi r^2

A_2 = \pi (2r)^2

A_2 = 4\pi r^2

now from above equation we have

\pi r^2 v_1 = 4\pi r^2 v_2

v_2 = \frac{v_1}{4}

here we have

v_1 = 12 m/s

v_2 = 3 m/s

5 0
2 years ago
The speed of the wooden bar is changed so that the bar hits the water fewer times each second.
Hitman42 [59]

Answer:

c - the frequency of the waves decreases

3 0
2 years ago
What is the big idea of mechanical equilibrium
aleksley [76]

Answer:

The body won't move or it will be moving with constant velocity

Explanation:

A body is said to be in mechanical equilibrium if the total force acting upon it is zero and the total torque acting on it is zero.[1] As the net force and torque on a body are zero, it will continue to move in a straight line with constant velocity and rotate with a constant angular velocity. If the velocity of a body in mechanical equilibrium is zero, then it will remain at rest.

This can be easily understood by interpreting the third law of Newton, the statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.

6 0
2 years ago
An ice skater spins at 2.5 rev/s when his arms are extended.He draws his arms in and spins at 6.0 rev/s. By what factor doeshis
Amiraneli [1.4K]

To solve this problem we will apply the concept related to Angular momentum. Said conservation momentum says that its initial state must be equal to that of the final state, that is,

L_f = L_i

\omega_f I_f = \omega_i I_i

Here,

I = Moment of Inertia

\omega = Angular velocity

Rearranging to find the ratio between the moment of inertia we have,

\frac{I_f}{I_i} =\frac{\omega_i}{\omega_f}

Replacing,

\frac{I_f}{I_i}= \frac{2.5}{6.0}

\frac{I_f}{I_i} = 0.42

Therefore the correct option is C.

7 0
2 years ago
What color would an object that reflects green and blue light appear to be in white light?
Free_Kalibri [48]

The answer is B. cyan.

If an object reflects green and blue light we preceive the reflection not as separate colours but a mixture of both aka cyan.

Hope this helps.

r3t40

3 0
3 years ago
Read 2 more answers
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