A potential of V is placed across an mW resistor.  How much current passes through the resistor?

When a female dog is bred, the amount of food (Calories) she is fed should be increased:

The hormone primarily responsible for preventing hypocalcemia is:

How many electrons are needed to produce a charge of Q = x 10-14 Coulombs? e = 1.6 x 10-19 coulomb/electron

The magnetic field in the figure is decreasing at the rate 0.45 T/s.  (e = 1.60 x10-19 C, mproton = 1.67×10-27 kg) a) What is the magnitude of the acceleration of a proton at rest at point a? What is the direction of acceleration of point a? b) What is the magnitude of the acceleration of a proton at rest at point d? What is the direction of acceleration of point d?

The power in a circuit is W, what is the resistance if A passes through it?

Radio astronomers detect electromagnetic radiation at 45.0 MHz from an interstellar gas cloud. They suspect this radiation is emitted by electrons spiraling in a magnetic field. (me=9.11×10-31 kg, e-=1.60×10-19C) What is the magnetic field strength inside the gas cloud?

a) What current is needed to generate the magnetic field strength of 10 T at a point 1.2 cm from a long, straight wire? (

What value of resistor R gives the circuit in the figure above a time constant of 27

What is the electric field amplitude of an electromagnetic wave whose magnetic field amplitude is 1.80 mT?