define the equation for the wavelength of an electron in a cathode ray tube if you know the potential difference between the electrodes. assume the mass of electrom is m, the electron charge is e and the potential difference between the electrodes is v.

Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)

Determine the time it takes for a satellite to orbit the earth in a circular "near-earth" orbit. the definition of "near-earth" orbit is one which is at a height above the surface of the earth which is small compared to the radius of the earth, so that you may take the acceleration due to gravity as essentially the same as that on the surface. does your result depend on the mass of the satellite?