Material used to slow down the speed of gases in absorption tower.

Assertion:Heavy water preffered over ordinary water as a moderator in reactors. Reason:Heavy water,used for slowing down the neurons,has lesser absorption probability of neutrons than ordinary water.

Calcium rods are used in nuclear reactors to slow down the neutrons taking part in the fission process

Write down the role of large intestine in terms of absorption.

Assertion: The change in air pressure effects the speed of sound. Reason: The speed of sound in gases is proportional to the square of pressure.

A: Environmental resistance operate to slow down exponential phase in logistic population. R: Crash phase does not occur in this populations.

In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because

In a nuclear reactor, moderators slow down the neutrons which come out in a fission process. The moderator used have light nuclei. Heavy nuclei will not serve the purpose because

Overall, ..... nerves slow down the body and divert energy to digestion and other basic housekeeping tasks, and .......... nerves slow down housekeeping tasks and increase overall activity in times of heightened awareness or excitement.

A body is projected vertically upwards with speed u from the top of a tower. It strikes at the ground with speed 3u. What is (a) height of tower and (b) time take by the body to reach at the ground?

List the uses of neon and argon gases.