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Georgia [21]
3 years ago
13

What is the potential energy of a 5kg rock that is 7m high on a hill

Physics
1 answer:
Goryan [66]3 years ago
4 0

Explanation:

Gravitational potential energy = mgh = (5)(9.81)(7) = 343.35J.

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olganol [36]

Answer:

The answer to your question is below

Explanation:

Data

light speed = 300 000 km/s

a) Express it in scientific notation

to do it, we just move the decimal point 5 places to the left

         300 000 = 3.0 x 10 ⁵ km/s

b) Convert this value to meters per hour

  (300 000 km/s)(1000 m/1 km)(3600 s/1 h) = 300000x1000x3600 / 1x1x1

                                                                        = 1.08 x 10¹² m/h

c) What distance in centimeters does light travel in 1 s?

data

v = 300 000 km/s

d = ?

t = 1 s

 formula   v = d/t      we clear distance     d = vxt

                                  d = 300000 x 1 = 300000 km

                                   d = 300000000 m = 30000000000 cm

4 0
3 years ago
What is the SI unit for momentum?
Whitepunk [10]
Kg . Meter per second (Kg.m/s)
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If the work required to move a 0.35 c charge from point a to point b is 125 j, what is the potential difference between the two
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Using W = qV  =>  V = W/q


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How many millimeters is represented by 6.7 cm
Alex787 [66]

Answer:

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What is the frequency of a wave that has a wavelength of 2000 meters and is traveling at 20 m/s?
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freqiency=velocity/wavelength

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