A 600N box is pushed up a ramp that is 2m high and 5m long. the person pushing the box exerts a force of 300N. what is the efficiency of the ramp.

In order for an airplane to bank, does it need to accelerate

Select all that apply. Which statements are supported by the second law of thermodynamics? A.) The usable energy in the universe is decreasing. B.) The usable energy in the universe is increasing. C.) The energy of the universe is being destroyed. D.

Would you hear an echo if you shouted in your bedroom? Explain your answer.

A 150-if object takes 1.5 minutes to travel s 2,500-meter straight path. It begins the trip traveling 120 m/s and decelerates to a velocity of 20 m/s. What was it's acceleration?

Dose mass alone determine weather an object will float or sink?

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?

Give an example of ionic and covalent bond, and explain and make an example for each.

Which of these is the best reason for proper nutrition? A. To ensure that you will be skinny B. To protect yourself against certain diseases C. To improve your intelligence D. To ensure that you will get good grades

And object has a mass of 15g it has a volume of 7.5ml. find the density of the object.