01 Question 4
What is an atom's nucleus made of?
X a. protons only
b. only neutrons
c. electrons and protons
d. protons and neutrons

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

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Each line (unit) on the horizontal axis represents: 5 years 10 years 20 years all of the above