One container has 100 ml of water and a second container has 1000 ml of water. If the temperature in both containers is 22 oc (7
1 answer:
<h2>Answer</h2>
A second container has 1000 ml of water will contan more thermal energy
<h2>Explanation</h2>As thermal energy can be determine as
Cp and ΔT will be same for both of the container as both have water and same temperature.
At the condition of same temeprtaure and object, the object with greater volume or mass has greater thermal energy
So,
1st container has 100ml, while 1000ml in 2nd container.
The Thermal energy of 2nd container, having 1000ml water will be greater.
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Answer:
the moment of inertia with the arms extended is Io and when the arms are lowered the moment
I₀/I > 1 ⇒ w > w₀
Explanation:
The angular momentum is conserved if the external torques in the system are zero, this is achieved because the friction with the ice is very small,
L₀ = L_f
I₀ w₀ = I w
w = w₀
where we see that the angular velocity changes according to the relation of the angular moments, if we approximate the body as a cylinder with two point charges, weight of the arms
I₀ = I_cylinder + 2 m r²
where r is the distance from the center of mass of the arms to the axis of rotation, the moment of inertia of the cylinder does not change, therefore changing the distance of the arms changes the moment of inertia.
If we say that the moment of inertia with the arms extended is Io and when the arms are lowered the moment will be
I <I₀
I₀/I > 1 ⇒ w > w₀
therefore the angular velocity (rotations) must increase
in this way the skater can adjust his spin speed to the musician.