Apotter’s wheel of radius 17 cm starts from rest and rotates with constant angular acceleration until at the end of 32 s it is moving with angular velocity of 20 rad/s.
a) what is the angular acceleration?
b) what is the linear velocity of a point on the rim at the end of the 32 s?
c) what is the average angular velocity of the wheel during the 32 s?
d) through what angle did the wheel rotate in the 32 s?

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.