In the game of curling a large stone is sliding along the ice (zero friction) toward a target (somewhat like bowling). If a 20 kg curling stone sliding at 3.5 m/s strikes another identical stone at rest and causes it to move off along the original stone's path. A). Calculate the resultant speed of the first stone if a force of 1000 N acts for a time of 50 ms.

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?