Which is the best description of a high pressure system? A.
Air cools and rises.

B.
Air warms and rises.

C.
Air cools and sinks.

D.
Air warms and sinks.

uranium fissions/breaks up giving out energy and neutrons

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.