How much work is done by a machine who's efficiency is 50% if I had to put 10,000J of energy inside of it?

What is the approximate amplitude of this wave a.10 seconds b.15 centimeters c.30 centimeters d.15 seconds

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

What are the north and south poles of a solenoid change with?