Which of the following statements are true of thermal energy and kinetic
1 answer:
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Answer:
T₂ = 305.17 K
Explanation:
Given that,
Heat, Q = 6000 J
Mass, m = 200 gram
Initial temperature, T₁ = 25° C
We need to find its final temperature. Let it is T₂.
We know that,
Where
c is the specific heat of water, c = 4.18 J/g°C
So,
So, the final temperature is equal to 305.17 K.
Answer:
Explanation:
To find the rotational kinetic energy you first calculate the angular acceleration by using the following formula:
F: force applied
R: radius of the wheel
I: moment of inertia
With this value you calculate the angular velocity:
you calculate how many radians the wheel run in 5.0m
Next, you use the formula for the rotational kinetic energy:
For the transnational kinetic energy you use the following equation:
(net work equals the change in the kinetic energy).
By replacing the you obtain:
Finally, the ratio between translational rotational kinetic energy is:
hence, translational kinetic energy is three times the rotational kinetic energy.