All organisms need energy to function. which cell organelle provides this energy

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

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Aracecar driver has to hold on tightly when going around a banked curve. approximately what is the centripetal force on a 2220.0 kg car going around a circle with a diameter of 190.0 meters at 25.0 m/s?