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Artemon [7]
3 years ago
10

2. A sound wave in a steel rail has a frequency of 620 Hz and a wavelength of 10.5 m. What

Physics
2 answers:
Alex3 years ago
5 0

Answer:Speed of sound in steel is 6510m/s.

Explanation:

Speed, v= frequency,f÷ wavelength

v=?, f= 620, wavelength= 10.5

v= 620× 10.5

= 6510m/s

den301095 [7]3 years ago
5 0
V=f¥
=620x10.5
V=6510m/s
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You drop a 0.375 kg ball from a height of 1.37 m. It hits the ground and bounces up again to a height of 0.67 m. How much energy
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2.57 joule energy lose in the bounce .

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when ball is the height of 1.37 m from the ground  it has some gravitational potential energy with respect to hits the ground  

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6 0
3 years ago
3. Will a plant grow higher with more light?
sleet_krkn [62]

Answer:

When we analyze the sentence we see that this is a hypotype with the growth of plants must behave and it has a prediction included.

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Explanation:

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Among the parts of the method we have.

* Independent variable . The controlled variable in research

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When we analyze the sentence we see that this is a hypotype with the growth of plants must behave and it has a prediction included.

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Students hypothesized that by running an electric current through the wire of the apparatus shown here, they could cause a non-m
astra-53 [7]
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3 years ago
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