A solid conducting sphere of radius 2.6 cm has a charge of 35 nC distributed uniformly over its surface. Let A be a point 1.0 cm from the center of the sphere, S be a point on the surface of the sphere, and B be a point 5.0 cm from the center of the sphere. (a) What is the electric potential difference VS − VB?

Explain why electric current cannot exist if a current doesn't have a voltage source.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above