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kozerog [31]
3 years ago
9

The space craft has a mass of 100kg its velocity increases from 20m/s to 50m/s in 10s. what force is acting on the space craft?​

Physics
1 answer:
IRINA_888 [86]3 years ago
6 0

Answer:

300N

Explanation:

a = v/t = (50-20)/10 = 3

F = ma = 100(3) = 300

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<h3>What is nuclear fusion?</h3>

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Which body is in equilibrium?
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Need help ASAP
VARVARA [1.3K]

Answer:

the correct one is D,  

Ultraviolet, x-ray, gamma ray

Explanation:

Electromagnetism radiation are waves of energy that is expressed by the Planck relationship

          E = h f

where h is the plank constant and f the frequency of the radiation.

Also the speed of light is

          c = λ f

         

we substitute

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therefore to damage the cells of the body radiation of appreciable energy is needed

microwave radiation has an energy of 10⁻⁵ eV

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X-ray                                    E = 10 eV

 

gamma rays                         E = 10 5 eV

therefore we see that the high energy radiation is gamma rays, x-rays and ultraviolet light.

When checking the answers, the correct one is D

6 0
3 years ago
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