Problem 1: A boy exerts a 14 Newton force on his little sister who is in a sled. The sister and sled combined have a mass of 25 Kg. At what rate did they accelerate?

Problem 2: A 2 kg hockey is accelerated by a slap shot force at a rate of 28.9 m/s2. What force is exerted with the stick?

Problem 3: A boy drops a 6.5 kg rock from the top of a tower (that means the object is in free-fall..acceleration due to GRAVITY-what is gravity’s acceleration?). What was the force that the rock will hit the ground with?

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction