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Inessa [10]
3 years ago
13

An ocean wave has a wavelength of 8m and wave frequency of 4 waves/s. what is the wave speed?

Physics
1 answer:
Mamont248 [21]3 years ago
4 0
Apply the wave equation:
v = wavelength × frequency
v = 8 m × 4 Hz = 32 m/s.
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8. Il An 8.00 kg package in a mail-sorting room slides 2.00 m down a
Vitek1552 [10]

Answer:

See below

Explanation:

Normal force = m g cos 53 = 8 kg * 9.8 m/s^2 * cos 53 = 47.1823 N

  no work is done by this force

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3 0
2 years ago
during conversion water to ice,forces of attraction between molecules. OPTIONS:1.)Decreases 2.)Increases 3.)Does not change 4.)C
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because water is loosely packed but when it is cold it becomes closely packed in order to form ice and thus the force attraction between them also increase.

4 0
3 years ago
Water flows over a section of Niagara Falls at the rate of 1.4 × 106 kg/s and falls 49.8 m. How much power is generated by the f
Ad libitum [116K]

Answer:

Power= 6.84×10⁸ W

Explanation:

Given Data

Niagara falls at rate of=1.4×10⁶ kg/s

falls=49.8 m

To find

Power Generated

Solution

Regarding this problem

GPE (gravitational potential energy) declines each second is given from that you will  find much the kinetic energy of the falling water is increasing each second.

So power can be found by follow

Power= dE/dt = d/dt (mgh)

Power= gh dm/dt

Power= 1.4×10⁶ kg/s × 9.81 m/s² × 49.8 m

Power= 6.84×10⁸ W  

7 0
3 years ago
5. The condition of the road surface affects total stopping distance.<br>A. true<br>B. false​
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Answer:

A true

Explanation:

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7 0
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100*20 + 200*80 = 300* T
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5 0
3 years ago
Read 2 more answers
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