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3 years ago

8

8. What type(s) of motion do the particles in a solid undergo? A. vibrational, rotational, and translational B. vibrational and

rotational C. vibrational only D. rotational only

1 answer:

uranmaximum [27]3 years ago

4 0

Explanation:

Particles in solids are always vibrating (moving back and forth) in place.

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Nutritionists call the calories found in junk food _____ calories due to lack of quality nutrients.

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Answer:

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Nutritionists call the calories found in junk food empty calories due to lack of quality nutrients.

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4 years ago

Please help me on question 3a and 3b.<br><br>Thanks!

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(a) The frequency of water wave is 2 Hz.

(b) The wave speed of the water wave is 3.6 m/s.

<u>Explanation:</u>

(a) It is known that completion of one complete wave in 1 second is defined as frequency of 1 HZ. So here there are 120 waves crossing the boat in 1 minute. So the frequency of the water wave will be

$Frequency =\frac{\text { Number of waves }}{\text { Time in seconds }}$

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$\text { Frequency }=\frac{120}{60}=2 \mathrm{Hz}$

So the frequency of water wave is 2 Hz.

(b) Then if the wavelength of the water wave is 1.8 m with a frequency of 2 Hz, then speed of the wave can be determined as the product of wavelength with frequency.

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