An electron moving with a speed of 8.4 105 m/s in the positive z direction experiences zero magnetic force. When it moves in the positive x direction it experiences a force of 2.1 10-13 N that points in the negative y direction. What is the magnitude and direction of the magnetic field?
magnitude T

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Name two kinds of practical electric pumps.

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.