A hydraulic lift used at an automotive repair shop raises a 1250 kilogram car 1.8 meters off the ground. What is the potential energy given to the car? a. 2,400 J
b. 19,600 J
c. 9,800 J
d. 22,000 J

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up

The inner planets or call terrestrial because they