Asmall sphere with mass m is attached to a massless rod of length l that is pivoted at the top, forming a simple pendulum.

the pendulum is pulled to one side so that the rod is at an angle θ from the vertical, and released from rest.

(a) in a diagram, show the pendulum just after it is released. draw vectors representing the forces acting on the small sphere and the acceleration of the sphere. accuracy counts! at this point, what is the linear acceleration of the sphere?

(b) repeat part (a) for the instant when the pendulum rod is at an angle θ/2 from the vertical.

(c) repeat part (a) for the instant when the pendulum rod is vertical. at this point, what is the linear speed of the sphere?

What is created when solids,liquids,an gases mix with one another

Could someone me find the answer to this problem.

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