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AlekseyPX
3 years ago
8

Calculate the work done when: The resultant force on a car is 22kN and it travels 2.0km.

Physics
2 answers:
Rasek [7]3 years ago
7 0
Work = force x distance

(22,000 newtons) x (2000 meters)

= 44 million Joules.
RoseWind [281]3 years ago
6 0
W=Fd
W=22,000N*(2,000m)
W=44,000,000J
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A force 1500 n to a 100 kg car . what is the acceleration of the car
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3 years ago
A boy finds an abandoned mine shaft in the woods, and wants to know how deep the hole is. He drops in a stone, and counts 4 seco
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The shaft is 78m approximately deep. The correct option is D which is 78 meters

<h3>What are Sound Waves ?</h3>

Sound waves are longitudinal. That is, the direction of the waves is parallel to the direction of its propagation of particles.

Given that a boy finds an abandoned mine shaft in the woods, and wants to know how deep the hole is. He drops in a stone, and counts 4 seconds before he hears the "plunk" of the stone hitting the bottom of the shaft.

  • The speed of the sound V = 330m/s
  • The time it takes the sound to reach the top = t

Speed V = distance / time

330 = h/t

Make t the subject of formula

t = h/330

As the stone is dropped, initial velocity = 0, Using the formula

h = 1/2gT²

But T = 4 - t

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Substitute all the parameters

h = 1/2 × 9.8 × (4)²

h = 4.9 × (16)

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Therefore, the shaft is 78m approximately deep. The correct option is D which is 78 meters

Learn more about sound wave here: brainly.com/question/16093793

#SPJ1

3 0
2 years ago
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Explanation:

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3 years ago
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At condition 1:
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