A swing ride at a carnival consists of chairs that are swung in a circle by 10.5-m cables attached to a vertical rotating pole, as the drawing shows. Suppose the total mass of a chair and its occupant is 172 kg, the angle θ=65°. Calculate the speed of the chair.

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

How do the kidneys affect homeostasis

What component of earth’s atmosphere exists entirely as a result of photosynthesis?