13. A satellite is moving in circular orbit of radius Rabout Earth. By what fraction must its velocity v be increased for the satellite to be in an elliptical orbit with min = R and max=2R? = The Yukawa potential adds an exponential term to the long-range Coulomb poten-

(a) Calculate the velocity of an electron that has a wavelength of 1.00 m. (b) Through what voltage must the electron be accelerated to have this velocity?

Integrated Concepts In a Millikan oil-drop experiment using a setup like that in Figure 30.9, a 500-V potential difference is applied to plates separated by 2.50 cm. (a) What is the mass of an oil drop having two extra electrons that is suspended motionless by the field between the plates? (b) What is the diameter of the drop, assuming it is a sphere with the density of olive oil?

List all the possible values of s and msfor an electron. Are there particles for which these values are different? The same?