Agrinding disk (mass 2 kg and radius 0.10 m) is spinning at 800 rpm (revolutions per minute). you press a piece of metal against the edge of the disk and the disk slows to 740 rpm after a time of 10 seconds. assume that the torque that you apply on the disk is constant.
a. what is 800 rpm in the unit rad/s?
b. what is 740 rpm in the unit rad/s?
c. what is the angular acceleration of the disk?
d. what is the moment of inertia of the disk?
e. how much torque do you apply on the disk?
f. how much impulse do you apply on the disk?
g. how much work do you do on the disk?

Imagine an isolated positive point charge q (many times larger than the charge on a single proton). there is a charged particle a (whose charge is much smaller than charge q) at a distance from the point charge q. on which of the following quantities does the magnitude of the electric field created by charge q at particle a's position depend? check all that apply.the type of the charge on the charged particle athe relative orientation between q and a (while the distance between q and a is fixed)the specific location of the charged particle a (while the distance between q and a is fixed)the amount of the charge on the point charge qthe specific location of the point charge q (while the distance between q and a is fixed)the distance between the point charge q and the charged particle athe amount of the charge on the charged particle a