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1)In a Closed Organ Pipe(COP), at temp. 10°C the number of beats are 5. If temp. is made to 20°C the no. of beats will be?   2)In 2 COP,at temp. 10°C the number of beats are 5. If temp. is...

Two satellites of same mass m are revolving around earth(M) in same orbit of radius r. Rotational directions of the 2 satellites are opposite, therefore they can collide. Total mechanical energy of...

How i did it } F=MA E=F/Q :F=QE MA= QE : A=QE/M using mass 9.11x10^-31 charge 1.6x10^-19 Efs 4.0x10^4 and i get the answer 7.0x10^15 this...

A 120 N crate is being pulled up a perfectly smooth ramp that slopes upward at 32 degrees by a pull that is directed at 72 degrees above the surface of the ramp. what is the magnitude of the pull...

A 12-kg box rest on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30, and the coefficient of kinetic friction is 0.20.

A steel ball and a rubber ball of equal mass are at room temperature. Each is dropped from the same height on to a solid floor. The steel ball rebounds to a greater height than the rubber ball. Which...

In an old-fashioned amusement park ride called Gravitron, Starship, or Alien Abduction, passengers stand inside a 3m tall, 12.5m diameter hollow steel cylinder with their backs against the wall. The...

i need help in finding the answer here is the question  A child and sled with a combined mass of 50.2 kg slide down a frictionless hill that is 8.20 m high. If the sled starts from rest,...