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1.      1. A dish of mass 10g is kept floating  horizontally in air by firing bullet, each of mass 5kg , with the same  velocity, at the rate of 10 bullet per second and the bullet  rebound  with the same speed in opposite directions . What the velocity of each bullet at the time of impact? [ Take g = 10m s-2 ]                                                                                 2.The supply voltage to a room is 120 V. The resistance of lead wire is 6ohm. A 60W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb? [ Take Rated voltage = 120 V]? 2.
Asked by Sahil Kumar | 21 Mar, 2017, 05:57: PM
answered-by-expert Expert Answer

Hi, Sahil!

These in-depth queries require an elaborate solution that is provided by us at our 'Ask the Expert'

Please post these queries as two separate questions at 'Ask the Expert'.

Answered by | 21 Mar, 2017, 06:08: PM

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