Look at the diagram below, from the frame of reference of the person riding scooter a, what is the velocity of scooter b?

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.