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Maksim231197 [3]

2 years ago

11

Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?

2 answers:

UNO [17]2 years ago

7 0

Answer:

<u>D</u>

Explanation:

where the heat transfers from coffee to mug.

Alex17521 [72]2 years ago

6 0

<span>The heat energy is being transferred between the two substances by thermal conduction. Because the hot coffee is at a different temperature to the mug, heat energy flows between them so that they reach thermal equilibrium, or the same temperature. This kind of heat transfer always happens from hotter temperatures to cooler temperatures.</span>

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lora16 [44]

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Vedmedyk [2.9K]

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olga2289 [7]

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What is the moment of inertia of an object that rolls without slipping down a 3.5-m- high incline starting from rest, and has a

Daniel [21]

Answer:

I = 0.287 MR²

Explanation:

given,

height of the object = 3.5 m

initial velocity = 0 m/s

final velocity = 7.3 m/s

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Using total conservation of mechanical energy

change in potential energy will be equal to change in KE (rotational) and KE(transnational)

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v = r ω

$mgh = \dfrac{1}{2}mv^2 + \dfrac{1}{2}\dfrac{Iv^2}{r^2}$

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3 years ago