A team of bicyclists are on bikes that require 512 J of work to ride. It takes 432 J of work for the bike to turn the gears. What is the mechanical efficiency of the bike?

If two objects have the same momentum, which ststement is true

The electrical charge on an atom as a whole is

What happens when the diaphragm is lowered?

A water pump pumps 3 kg of water every second from the bottom of a well to the top of the well 50 m above if the pump used 2000 W of electrical power to accomplish the task what is the efficiency of the pump

Nick's swimming goggles are made of blue plastic. When he straps them on, he notices that the goggles change the color of the objects around him. A white ring buoy appears because the blue plastic all colors of light except blue.

How long does it take for light from a star that is 8 light years away to reach Earth? Question 7 options: 8 earth minutes 16 earth minutes 8 earth years 16 earth years

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.