The earth exerts a gravitational force on the moon. the moon exerts a gravitational force on the earth. how do the magnitudes of these two forces compare? note that the mass of the earth is 81 times the mass of the moon.

If friction were to be eliminated from a slide what would propel an object down the slide

What measurement can be used to determine the stability of the atmosphere?

Two trains start a journey at the same time 120 miles apart, travelling towards each other. The first train is travelling at 60 mph and the second train is travelling at 40 mph. How long does it take for the two trains to meet?

Greg is in a bike race. at mile marker four (out of ten), his speed was measured at 13.5 mph. which best describes the measured number? it is the average speed of the bike rider. it is the instantaneous speed of the bike rider.

Which gas is produced in the decomposition reaction of h2o2?

What is the principles of electric motor

A tow truck has a weight of 10,350 N. What is the mass of the tow truck?

Calculate the momentum of 5.07 kg egg that is dropped from a roof and falls 2 seconds before hitting the ground.

Make a prediction based on your understanding of the cause-and-effect relationship between environment and trait: what happens when an environmental change is too extreme for the population of organisms to adapt?

You are holding the axle of a bicycle wheel with radius 35.0 cm and mass 1.00 kg. You get the wheel spinning at a rate of 75.0 rpm and then stop it by pressing the tire against the pavement. You notice that it takes 1.