In order to produce artificial gravity a large cylindrical space station is spinning in space. If the radius of the space station is 70 m, with what angular velocity should the space station spin in order to provide a gravitational acceleration for the occupants of 9.81 m s -2? If the mass of the space station is 60 tonnes, what is the kinetic energy of the spinning space station?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.