Tory has a mass of 40kg. she sleds down a hill that has a slope of 25 degrees. what is the component of her weight that is along her direction of motion?

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

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

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.