Avolleyball starts from rest and accelerates with an acceleration of 0.415 m/s2 while moving down a 9.00 m long inclined plane. when it reaches the bottom, the ball rolls up another plane, where, after moving 14.50 m, it comes to rest.
a) what is the speed of the ball at the bottom of the first plane?
m/s
b) how long does it take to roll down the first plane?
s
c) what is the acceleration along the second plane?
m/s2
d) what is the ball's speed 8.25 m along the second plane?
m/s

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?