Physics quiz 4

if you measure the width of an outdoor barn with a steel tape on a very cold day, your measured width will be

a bit long

When a solid is changed to a liquid phase, the solid

absorbs energy

An example of a heat engine is

all of the above

adiabatic processes occur in earths

all of the above

which of these are good insulators

all of the above

which of the following of these units of temperature is larger

both are the same, kevin celsius in size

which of the following expands more when the temp is increased

equal volumes of onelium

The addition of salt to water affects its

freezing point

When an iron ring is heated, the hole becomes

larger

the main purpose of the condenser in the steam cycle of the steam turban is to

lower pressure on the backside of the turban blades

Dean teaches that the phenomenon of regelation is due to the

open-structured nature of ice crystals

Water in a car radiator sometimes boils explosively when the radiator cap is removed, which is due to sudden

reduced pressure

in practice, a good insulator

slows heat flow

the ideal efficiency of a heat engine operating between temps 2700k and 300k is

89%

If you release a single molecule in an evacuated region it will initially

Fall as a baseball would

when mechanical work is done on a system, an increase normally occurs in

both of these

A soda-pop can containing only steam is placed top downward in a pan of water. Whap! The can is dramatically crushed by atmospheric pressure. The reduced pressure inside the can is due to

condensation of steam inside

A canteen that is wet on the outside results in water inside that is

cooler

Open spaces in ice crystals contribute to

decreased density

A bridge is more likely to be ice covered than the roadway on a cold day because

heat upwelling from the ground below is absent on a bridge

Compared to a giant iceberg, a hot cup of coffee has

higher temperature, but less internal energy

If glass expanded more than mercury, then the column of mercury in a mercury thermometer would rise when the temperature

increases

Evaporation is a cooling process and condensation is

warming process

A block of wood and a block of copper will feel neither hot nor cold to the touch when they each have

your temperature