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mass of body= 4 kg is dropped form height= 45 m Calculate the kinetic energy just before hitting the ground
A rigid tank primarily contains 3 kg of air at 500 kPa, 290 K. The tank is connected by a valve to a piston-cylinder assembly oriented vertically and consisting of 0.05 m³ of air i
Explain Spring Force (Fspring) Force exerted by a compressed or stretched spring upon any object that attached to it. An object that compresses or stretches a spring is always
why sky is blue?
Define Hydrogen Rocket? The reaction chamber of a rocket engine is supplied with a mass flow rate m of sufficient oxygen and hydrogen to allow complete burning of the fuel an
An atom which has lost one electron would be: (1) Negatively charged () Positively charged (3) Electrically neutral (4) Carry double positive charge Ans: Elec
why it is not possible to charge one object by rubbing without charging another object by rubbing
What will be effect on Newton's rings if: (a) A little oil (μ=1.65) is introduced between the lens (μ=1.5) and the glass plate (μ=1.75) (b) A plane mirror is placed instead o
A ski starts from rest and slides down a 20 degree incline 100meters long. (a) if the coefficient of friction is .090, what is the the ski's speed at the base of the incline? (b)if
Interconnection of cells: Cells may be connected in series, parallel or any combination of the two in order to form a battery. When cells are connected to form a battery they s
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