Two concentric imaginary spherical surfaces of radius R and 2R respectively surround a positive point charge Q located at the center of the surfaces. When compared to the electric flux φ1 through the surface of radius R, the electric flux φ2 through the surface of radius 2R is. a. φ2 = 1/4φ1b. φ2 = 1/2φ1c. φ2 = φ1d. φ2 = 2φ1e. φ2 = 4φ1

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?