Ten days after it was launched toward mars in december 1998, the mars climate orbiter spacecraft (mass 629 kg) was from the earth and traveling at relative to the earth. at this time, what were (a) the spacecraft’s kinetic energy relative to the earth (b) the potential energy of the earth–spacecraft system

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

Why do atoms emit energy of only specific wavelengths

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b. what is the wavelength of the wave? c. what is the amplitude of the magnetic field? d. what is the intensity of the wave?