A particle charge q = 1.1 × 10-7 C is at the center of a spherical cavity of radius 3.0 cm in a chunk of metal. Find the magnitude of the electric field (a) 1.6 cm from the cavity center and (b) anyplace in the metal.

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.