Calculating angular displacement Thinking about an analogue clock, calculate the angular displacement in revolutions, radians and degrees for the following: . A second hand after three minutes • An hour hand after 20 minutes . The minute hand as it moves from 9.15 to 12.45.

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

Which articulations allow for greatest range of motion?

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?