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Q. 33

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1060

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Short Answer

A 1.0 g particle has momentum 400,000 kgm/s. What is the particle’s speed in m/s?

The speed of particle is .

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Step by Step Solution

Given information 

We have given that, a 1.0 g particle has momentum 400,000 kgm/s.

Step 1.

We will use relativistic momentum formula to get the value of photon's velocity.

Formula of relativistic momentum is :

Here, m = mass of photon

v = velocity of photon

c = speed of light

= relativistic density

Step 2.

Substituting the values in the formula :

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