A charged particle moving along the +x-axis enters a uniform magnetic field pointing along the +z-axis. Because of an electric field along the +y-axis, the charged particle does not change velocity. What is the sign of this particle? A) Positive
B) Negative
C) The particle could be either positive or negative
D) None of the above

Apossible explanation for a set of facts that can be tested by further investigation is called

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?