A Velcro ball is thrown at a stationary target and sticks. If the ball weighs 1kg and the target weighs 5kg, and the final velocity of the combined mass is 2m/s, how fast was the ball thrown?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.