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maks197457 [2]
1 year ago
10

The speed of sound in water is 1,492 m/s. A sonar signal is sent straight down from a ship at a point just below the water's sur

face and 7.5 s later the reflected signal is detected. How deep is the ocean beneath the ship?
Physics
1 answer:
ASHA 777 [7]1 year ago
6 0

Answer:

5595 m

Explanation:

The wave travels down   (the depth) and the back up (the depth again)

  this distance is     2 d

2 d =  1492 m/s * 7.5 s

2d = 11190 m

d = 5595 m

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3 years ago
A ball with 100 J of PE is released from a height of 10 m. What will be the KE of the ball at 5
harkovskaia [24]

Answer:

The kinetic energy is: 50[J]

Explanation:

The ball is having a potential energy of 100 [J], therefore

PE = [J]

The elevation is 10 [m], and at this point the ball is having only potential energy, the kinetic energy is zero.

E_{p} =m*g*h\\where:\\g= gravity[m/s^{2} ]\\m = mass [kg]\\m= \frac{E_{p} }{g*h}\\ m= \frac{100}{9.81*10}\\\\m= 1.01[kg]\\\\

In the moment when the ball starts to fall, it will lose potential energy and the potential energy will be transforme in kinetic energy.

When the elevation is 5 [m], we have a potential energy of

P_{e} =m*g*h\\P_{e} =1.01*9.81*5\\\\P_{e} = 50 [J]\\

This energy is equal to the kinetic energy, therefore

Ke= 50 [J]

8 0
3 years ago
Which statement best describes the atoms of elements that form compounds by covalent bonding?
k0ka [10]

Answer:

they share electrons between them.

Explanation:

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4 0
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Which best describes how geothermal energy is used to make electricity?. . A.. Rocks are split to release energy that drives a s
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6 0
3 years ago
What is the kinetic energy of an automobile with a mass of 1252 kg traveling at a speed of 12 m/s?
torisob [31]
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4 0
3 years ago
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