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?

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

The substances that are necessary for producing of certain hormones and that store and transport vitamins