Two charged spheres placed 43 cm apart exert a force of 1.40 10-14 N on each other. If one of the spheres has a charge of 1.68 x 10-17 C, what is the
charge of the other sphere?

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Which statement correctly describes the relationship between frequency and wavelength?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)