physics exam 4

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supports this common knowledge

it is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. knowledge of newtons law of coding

when an iron ring is heated the hole becomes

larger

microscopic slush in water tends to make the water density

less

higher temperatures

more efficient gasoline engines could be built if they could withstand

at the same temperature, which move with greater speed in the air?

very light molecules

which of the followers expands most when the temperature is lowered? equal volumes of

water at 4 degrees C

applying heat and reducing air pressure on its surface

water can be brought to a boil by

decreases

when a parcel of air expands against the environment and no heat enters or leaves, its temperature

released from the vapor

when a vapor condenses energy is

drops

when the air of a fully inflated party balloon quickly escapes, its temperature

work is done on the broth & increase the temperature of the broth

when you vigorously shake chicken broth, you

no pieces of metal are among the coals

when you walk barefoot on red hot wooden coals it is best if

evaporation

wrapping a hot potato in aluminum foil significantly reduces the rate at which it cools by

room temperature on the kelvin scale is about

300 K

the temperature at the bottom of lake tahoe, high in the sierra Nevada mountains in california, at this moment is

4 degrees C

black pot

A liter of cold water will warm faster in sunlight in a

lower than its surroundings

a blueberry pie will be a net absorber of energy when its temperature is

temperature rises

a body of water will be deeper when its

heat upwelling from the ground below is absent on a bridge

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

good emitter of radiation

a good absorber of radiation is a

to enable evaporation in its mouth and bronchial tract

a hot dog pants

a good heat conductor is

a poor insulator

boiling

a quantity of water has more entropy when it is

specific heat capacity

a substance with a high thermal inertia has a high

warmer than lower regions of air

a temperature inversion occurs when the upper layers of air are

iron

aluminum has a higher specific heat capacity than iron. this means that for equal masses of aluminum and iron, the metal that heats more quickly when the same amount of heat is applied is

273°C

an equal amount of 0°C air that is twice as hot has a temperature of

increases

as a parcel of air at a high altitude sibks to a lower elevation with no heat input or output, its temperature

decreases

as a piece of metal with a hole in it cools, the diameter of the hole

4° C

before ice can form on a lake, all the water in the lake must be cooled to

white surface

both black and white road surfaces radiate energy at midnight on a starry night the warmer road surface is the

which body glows with electromagnetic waves?

both the sun and the earth

higher temperature, but less internal energy

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

when a bimetallic bar made of copper and iron strips is heated, the bar bends towards the iron strip. the reason for this is

copper expands more than iron

lower

due to the presence of ice crystals in nearly frozen liquid water, the density of water is

warming process

evaporation is a cooling process and condensation is

energy transfer by convection is primarily restricted to

fluids

lower the freezing point of water

foreign ions introduced to water

which of the following expands most when the temperature is increased? equal volumes of

helium

some molecules absorb large amounts of energy in the form of internal vibrations and rotations. materials composed of such molecules have

high specific heats

kinetic energy, but more speed

hydrogen and oxygen molecules in a sample of gas have the same temperature this means the hydrogen molecules on average have the same

neither of these

in mountain regions food cooked in boiling water cooks slower than when cooked at sea level. if the temperature beneath the pot of boiling water is increased the food will cook

if a solid object radiates more energy than it absorbs, its

internal energy decreases

is a poorer conductor

on a cold day your feet will feel warmer on a rug than on a tile floor because a rug

at or about 30 C

pour a liter of water at 40 C into a liter of water at 20 C and the final temperature of the two becomes

convection

soaring birds and glider pilots can remain aloft for hours without expending power due to

can a sample of water possibly have the same volume after being warmed by several degrees Celsius?

sometimes

The water in them contains dissolved salts and sugars

stored potatoes beets and rutabagas freeze at temperatures below zero degrees celsius (rather than at exactly zero) because

Heat energy travels from an object with a high

temperature to an object with a lower temperature

89%

the ideal efficiency for a heat engine operating between the temperatures 2700 K and 300 K is

-273 degrees celsius (absolute 0, 0K)

the lowest temperature possible in nature is

high specific heat capacity

the moderate temperature of islands throughout the world has much to do with water's

evaporation(2)

the surface of hot water has a relatively high rate of

little energy to you in spite of their high temperature

the white-hot sparks from a 4th of july type sparkler that strike your skin transfer

the fact that a thermometer "takes its own temperature" illustrates

thermal equilibrium


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