1. What power is needed by the 220V washing machine motor to make it one minute work 33kJ?
2. At what voltage does the car radio operate when the current required for its operation is 500 mA and it
consumes 21.6 kJ of energy per hour?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)