A bicycle is being ridden along a horizontal road by a 'pedal' force of 400N. It's speed is constant at 12 m/s the. What is the total value of the frictional forces acting on the bike and it's rider?

About 800 billion years ago there was series of ice ages, why?

When the man's sound waves are reflected off of the walls, what happens to them? A:They become twice as loud B:They "stick" to the wall and get absorbed C:They become electromagnetic waves D:They "bounce" off of the wall and begin moving back

What are possible formulas for impulse?

If the 40 kg boy were in a spacecraft 5.0R from the center of the earth, what would his weight be?

The volume of the gas at a temperature of 50 Kelvin on this scale is closest to 0 cubic centimeters 5 cubic centimeters 50 cubic centimeters 300 cubic centimeters 500 cubic centimeters

Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle's scrap metal yard.

A flight attendant pulls a 60.0 N flight bag a distance of 239.0 m along a level airport floor at a constant speed. A 21.0 N force is exerted on the bag at an angle of 66.0 degrees above the horizontal. How much work is done on the flight bag?

A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 20 m to the water below. How far does the rock travel horizontally before striking the water?

This is a machine consisting of two wheels of different sizes that rotate together. It is a modified lever.

A source from which organisms generally take elements is called a/an A. biotic community. B. reservoir. C. exchange pool. D. food web.