One astronomical unit is equal to which distance?
A.
the distance from Earth to the Moon
B.
the distance from Earth to the Sun
C.
the distance from the Sun to Pluto
D.
the distance across the galaxy

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow