A proton moves at 2.50 x 10° m/s horizontally at a right angle to a magnetic field.
a. What is the strength of the magnetic field
required to exactly balance the weight of the
proton and keep it moving horizontally?
b. Should the direction of the magnetic field be
in a horizontal or a vertical plane?

12. a body is a particular amount of matter. it can be a solid, liquid or gas. it can be described as existing in a. size and shape. b. motion and force c. time and space. d. location and movement.

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?