A 500 kg mass is spun in a circle of radius 25 m with a velocity of 250 m/s. *What is the period of its rotation?
a.
b
What is its frequency?
C.
What is its acceleration?

Aregular polygon has angkes of size 150° each.how many side has the polygon

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

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life