Which observation about the rock best supports this classification? a. The rock is composed of several minerals.
b. The rock contains fragments of other rocks.
c. The rock has a vesicular texture.
d. The rock shows distorted and stretched pebbles.

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.