Which of the following is evidence that supports the big bang theory? A. Light from other galaxies sometimes takes thousands of years to
reach Earth, which shows that the galaxies are moving away from
Earth.
B. Light from other galaxies appears shifted toward the red end of
the spectrum, which shows that the galaxies are moving away
from Earth.
C. Light from other galaxies always travels at the same speed, which
shows that the galaxies are moving away from Earth.
D. Light from other galaxies shows that light elements formed before
heavier elements.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.