a 1kg mass is thrown to a height of 20m. what is the potential energy at this height?...what is the kinetic energy at this height?..what is the kinetic energy as it hits the ground again?..with what velocity will it hit the ground?

Act has a 1200: 5 or 240: 1 turns ratio. it is short circuited. what is the maximum current at 1200a primary if we put a 100ohm resistor across the secondary end of the ct. use it as current source circuit.

State the right hand rule of the direction of magnetic field in a conductor carrying current

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping