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beks73 [17]
3 years ago
9

A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. What is the initial momentum of the g

reen train?
Physics
1 answer:
soldi70 [24.7K]3 years ago
6 0

Answer:

I think answer is zero

bcz momentum=mass×velocity

body was initially at rest it means its velocity is zero

30×0=0

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the maximum displacement of a particle, within a wave, above or below its equilibrium position, is called__________
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the amplitude.

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A gas at a pressure of 2.10 atm undergoes a quasi static isobaric expansion from 3.70 to 5.40 L. How much work is done by the ga
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Total work done in expansion will be 3.60\times 10^5J

Explanation:

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So initial volume V_1=3.70liter

And final volume V_2=5.40liter

So change in volume dV=5.40-3.70=1.70liter

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5 0
3 years ago
it is determined that a certain light wave has a wavelength of 3.012x10^-12 m. the light travels at 2.99x10^8 m/s. what is the f
Dahasolnce [82]

Answer:

9.93\times 10^{19}Hz

Explanation:

Speed of light is the product of its wavelength and frequency, expressed as

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Making f the subject of the formula then

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Therefore, the frequency equals to 9.93\times 10^{19}Hz

4 0
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