Avan de graaff generator has an aluminum sphere on top with a radius of 8.7 cm and carries a charge of -1.25 microcoulombs (μc). what is the potential, v, in volts, at the surface of the sphere? enter your answer in exponential notation.

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

A( developed during the process of technology design