In vacuum, the speed of an electromagnetic wave
A) depends upon itsfrequency.
B) depends upon its wavelength.
C) depends upon the strength of its electric andmagnetic fields.
D) is a universal constant.

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

How many atoms of nitrogen are in the chemical formula ni(w on