True or False: Cooler objects always have more thermal energy than warmer objects.

Physics

1 answer:

tensa zangetsu [6.8K]3 years ago

3 0

False

Because you can see using a thermal camera I guess

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A battery powers a circuit for a small noisy fan. The fan’s motor gets warm as it turns. What energy transformations are taking

Snowcat [4.5K]

Answer:

The battery is an electric energy source, which is being used to power a motor. The motor turns this electricity into kinetic energy as it spins the fan, creates heat from friction, and creates noise as stated by the problem.

Explanation:

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2 years ago

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Shrinking Loop. A circular loop of flexible iron wire has an initial circumference of 168 cm , but its circumference is decreasi

DedPeter [7]

Answer:

103.1 V

Explanation:

We are given that

Initial circumference=C=168 cm

$\frac{dC}{dt}=-15cm/s$

Magnetic field,B=0.9 T

We have to find the magnitude of the emf induced in the loop after exactly time 8 s has passed since the circumference of the loop started to decrease.

Magnetic flux= $\phi=BA=B(\pi r^2)$