Abicycle 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?

What happens in a global convection cell

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver