Question

What is the wave length of a body with mass 100g, moving with a velocity of 20m/s

Answer 1

Answer:

K.E=1/2mv^2

m = 100g = 0.1kg

k.E = 20 J

so, 20=1/2 x0.1xv^2

40=0.1xv^2

400=v^2

So, V=20m/s

Momentum p = mv

p = 0.1kg x20 m/s

   =2kgm/s

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Answer 2

Answer:

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