Which occurrence would contradict the big bang theory? OA. The percentage of carbon dioxide in Earth's atmosphere increases.
B.
Scientists discover that 99% of the universe's mass is hydrogen.
O c.
A radio telescope detects microwave radiation in space.
OD.
Distant galaxies move progressively farther away from Earth.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.