A 7.2 m long ramp is set at an angle of 42 degrees with the floor. An 11kg box is pushed up the ramp. What is the change in GPE of the box? (Answer is 340J, but how do you get that?)

Which of the following was a common life form during the Cambrian Period? trilobite bryozoan land plant cephalopod

Which of the following is a common feature among the four inner planets? atmosphere composition distance from the sun rocky surface temp range

According to Ptolemy's model of the movement of celestial bodies, A. the earth rotates around the sun. B. the sun is the center of the universe. C. the earth rotates around the moon. D. planets orbit in circular paths around the earth.

if two small positively charged particles of equal magnitude are placed close to each other?

Which property of the sound wave undergoes a change with an increase in its energy?

What is the mass of an object with a momentum of 250 kgm/s and a velocity of 5 m/s?

The energy associated with the motion or position of an object is called

In a nuclear reactor, the moderator is: usually made of graphite placed between the fuel rods used to slow down neutrons all of the above none of the above

Break down of rock can be chemical or mechanical

4 uses of plane mirror