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raketka [301]
3 years ago
12

A thunderclap sends a sound wave through the air and the ocean below. The

Physics
1 answer:
marysya [2.9K]3 years ago
8 0

Answer:

C. 14.93 m

Explanation:

The given frequency of the wave, f = 100 Hz

The given equation for the wave speed, <em>v</em>, is presented as follows;

v = f × λ

The speed of sound in water, v = 1,493 m/s

Therefore, we get;

The wavelength, λ = v/f

∴ λ = 1,493 m/s/(100 Hz) = 14.93 m

The wavelength, λ = 14.93 m.

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What is an analogy of two different roads or rivers to compare a series and parallel circuit?
faltersainse [42]

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3 years ago
How much work is done in accelerating a 2000 kg car from rest to a speed of 30 m/s?
Otrada [13]
The work done is the same as the amount of energy increase. The formula for kinetic energy is 122
1
2
m
v
2
.

The initial KE of the car is 12(1000)×202=200,000
1
2
(
1000
)
×
20
2
=
200
,
000
joules.

The final KE of the car is 12(1000)×302=450,000
1
2
(
1000
)
×
30
2
=
450
,
000
joules.

The difference between these is the amount of work done: 450,000−200,000=250,000
450
,
000
−
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20



3
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