physics exam 4
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
