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yKpoI14uk [10]
3 years ago
15

Trolley A, of mass 180 g, is moving at a velocity of 4 m/s towards trolley B

Physics
1 answer:
Fed [463]3 years ago
8 0

Answer:

<h2>To solve typical questions like this we can use law of conversation of linear momentum...which is</h2>

<h2>T.I.L.M.=T.F.L.M.</h2>

(Total initial linear momentum = total final linear momentum.)

<u>Momentum = mass × velocity</u>

<h2>T.I.L.M = T.F.L.M</h2>

180×4 + 120×0 = 180×0 + 120×V

(180 ×4)/120 = V

<h2>6Ms^-1 = v</h2>
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A high power line carries a current of 1.0 kA. What is the strength of the magnetic field this line produces at the ground, 10 m
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B = \frac{\mu_{0}I}{2\pi r} (1)      

                                     

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