Question

gases( select all that apply)

are generally good conductor of electricity and interact strongly with magnetic fields

can be compressed or squeezed into a smaller volume readily

flow readily conforming to the shape of their container
have a well-defined boundary or surface

are rigid and generally retain their shape unless distorted by a force

if the acceleration due to gravity onthe earth suddenly increased would this affect the atmosphere pressure
a)yes
b)no

would it affect the pressure at the bottom of a swimming pool
a)yes
b)no

explain both effects

A ship on a large river approaches a bridge and the captain notices that the ship is about a foot too tall to fit under the bridge. A crew member suggests pumping water from the river into an empty tank on the ship. would this help
a) yes
b)no

Answer 1

1) option b c are correct. Because gases are compressible, dont have definite volume or shape and bad conductor of electricity.

2)yes, gases will exert more pressure as pressure = rho*g*h where rho is density of atmospheric gases.

3)yes, P= rho g h where rho is density of water.

4) Yes, because then effective density of ship will increase as air is replaced by water