Calculate the wavelength (in meters) of radiation with a frequency of 5.40 x 1014 5-1. ​

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?