An electron moves in the negative x direction, through a uniform magnetic field that is in the negative y direction. The magnetic force on the electron is:

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

Abar magnet cut in half will form a total ofpoles. a)fourb)eightc)two