Select true or false for the following statements about electromagnetic waves. ultraviolet radiation causes common sunburn. visible light is often emitted when valence electrons change their state. the sun's radiation is most intense in the infrared region. x-rays can be produced in transitions involving inner electrons in an atom. a vertical automobile antenna is sensitive to electric fields polarized horizontally. blue light has a higher frequency than x-rays. gamma rays travel in vacuum at the same speed as the visible light.

On a geologic map, if the contacts between sedimentary rock units form a bull’s-eye pattern of concentric circles, with the youngest unit in the center, the underlying structure is a(n)

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?

Which statement best explains why the overall charge on an atom is zero?