The sun is the source of
a. all energy for your body
b. ultraviolet radiation that can cause cancer
c. oxygen, which supports our breathing
d. none of the above

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

What is the equation for electrical work?