no non – poly attire, id’s around your neck objective` review on waves thermodynamics, buoyancy...
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NO NON – POLY ATTIRE, ID’s AROUND YOUR NECK
OBJECTIVE `Review on waves thermodynamics, buoyancy & pressure.Drill 4.32: prep Date: 06-02-2015
Get a copy of Review Packet 2, go straight to your seat and start working with the review sheet.
EXTRA CREDIT - due on Physics Day Exam3 pts each packet COMPLETED review packet (no credit for incomplete/ with blanks reviewer)2 pts for being present and on time in class (1 pt if late) to EXAM SCORE
ZERO for the day behavior is unbecoming (ex. Loud, electronics, sleeping etc)
All LEGAL missed work/ quiz should be made-up by Fri, June 5. STAY SEATED, Wait for teacher to say “class
dismiss”
REVIEW PACKETSDue by 8:05 on Monday, June 8PLACE ALL THE
5 -PACKETS IN YOUR CLASS BINS
HOMEWORKEverything we CANNOT DO IN
CLASS
No HOMEWORK
If we can finish each packet in
class
MULTIPLE CHOICE Circle the letter of your answer
(equations for problem solving questions)
No. 1Beaker A below contains 50 g of water at 15 °C. Beaker B contains 10 g of water at 100 °C. What is the temperature of the system when the water in the beakers is mixed together? [Assume no heat is lost to the surroundings.]• 18 °C• 29 °C• 39 °C• 41 °C
No. 1Memorize this equation!
No. 1Beaker A below contains 50 g of water at 15 °C. Beaker B contains 10 g of water at 100 °C. What is the temperature of the system when the water in the beakers is mixed together? [Assume no heat is lost to the surroundings.]
29 °C
No. 2Two objects made from the same material but at different temperatures are put in contact with each other in an insulated container. What will happen?
• The atoms in the cooler object and the atoms in the warmer object will slow down till they stop moving.
• The atoms in the warmer object will slow down and the atoms in the cooler object will continue to move at the same average speed.
• The atoms in the cooler object will speed up and the atoms in the warmer object will continue to move at the same average speed.
• The atoms in the cooler object will speed up and the atoms in the warmer object will slow down till they move at the same average speed.
No. 2Two objects made from the same material but at different temperatures are put in contact with each other in an insulated container. What will happen?
The atoms in the cooler object will speed up and the atoms in the
warmer object will slow down till they move at the same average
speed.
No. 3Substance A has twice the specific heat as substance B. Equal amounts of A and B are mixed together in an insulated container. If substance A gained 14 joules of heat, what quantity of heat did substance B lose? • 0.0 J• 7.0 J• 14 J• 28 J
No. 3Substance A has twice the specific heat as substance B. Equal amounts of A and B are mixed together in an insulated container. If substance A gained 14 joules of heat, what quantity of heat did substance B lose?
14 J
No. 4What does a calorimeter measure?
• Change in radiation• change in thermal energy• change in temperature• change in kinetic energy
No. 4What does a calorimeter measure?
change in thermal energy
No. 5Absolute zero may be regarded as that at which _________.
• water freezes • all gases become liquids • all substances are solid• molecular motion in a gas would be
minimum possible
No. 5Absolute zero may be regarded as that at which _________.
molecular motion in a gas would be
minimum possible
No. 6In which direction is heat flow?
• Hot to cold• cold to hot• from left to right• from light to dark
No. 6In which direction is heat flow?
Hot to cold
No. 7A cube measuring 2.0 m × 2.0 m × 2.0 m weighs 6.0 x 104 kg will exert how much pressure on a horizontal surface • 7.5 x 103 Pa• 3.0 x 104 Pa• 1.5 x 105 Pa• 1.5 x 107 Pa
No. 7A cube measuring 2.0 m × 2.0 m × 2.0 m weighs 6.0 x 104 kg will exert how much pressure on a horizontal surface
•1.5 x 105 Pa
No. 8Fifty kilojoules of heat is added to a 20-kg block of ice at 0 C. How much ice will melt?• 0.093 kg• 0.15 kg• 0.63 kg • 2.5 kg
No. 8Fifty kilojoules of heat is added to a 20-kg block of ice at 0 C. How much ice will melt?
•0.15 kg
No. 9Absolute zero is•273 K• -273 K• -273 F• -273 C
No. 9Absolute zero is
•-273 C
No.10 2 kg of water at 40ºC is to be turned into ice at -17 ºC. In order to do this, which process should take place first?• raise the temperature of water to 100 ºC.
• lower the temperature of water to -17 ºC.• lower the temperature of water to 0 ºC.• freeze the water right away.
No.10 2 kg of water at 40ºC is to be turned into ice at -17 ºC. In order to do this, which process should take place first?
•lower the temperature of water
to 0 ºC.
No.11 When heat is added to a solid at its melting point it begins to undergo a phase change and become a liquid. During this process as heat is absorbed more and more of the material becomes a liquid and the temperature • increases • decreases • remains the same • fluctuates
No.11 When heat is added to a solid at its melting point it begins to undergo a phase change and become a liquid. During this process as heat is absorbed more and more of the material becomes a liquid and the temperature
•remains the same
No.12 Objects A and B have the same mass and initial temperature, but Object A is made of a material with a higher specific heat. If the same quantity of heat is added to both objects which will end up at a higher temperature? (Assume that no heat is lost to the surroundings)• Object A reaches a higher temperature since change of
temperature is directly proportional to specific heat.• Object B reaches a higher temperature since it requires
less heat energy for each degree that it warms up.• Both end up at the same temperature because they both
received the same amount of heat.• There is not enough information provided to determine
which object ends up at a higher temperature.
No.12 Objects A and B have the same mass and initial temperature, but Object A is made of a material with a higher specific heat. If the same quantity of heat is added to both objects which will end up at a higher temperature? (Assume that no heat is lost to the surroundings)
• Object B reaches a higher temperature since it requires
less heat energy for each degree that it warms up.
No.13 Suppose the volume of gasoline in your gas tank expands with warming temperatures. Do you now have more gasoline? • No, you still have the same mass of
gasoline. • Yes, the volume increased and so has the
mass. • No, the mass decreased as the volume
increased to maintain the density. • Yes, the density and the volume increased.
No.13 Suppose the volume of gasoline in your gas tank expands with warming temperatures. Do you now have more gasoline?
•No, you still have the same mass of
gasoline.
No.14 • Water boils at 100° on the
__________ temperature scale.• Celcius• Fahrenheit• Kelvin• Rankine
No.14 • Water boils at 100° on the
__________ temperature scale.
•Celcius
No.15 • Thirty kilojoules of heat is removed
from 1.4 kg of ice initially at -10C. What is its new temperature?• -10.2C• -20.2C• -30C• -98C
No.15 • Thirty kilojoules of heat is removed
from 1.4 kg of ice initially at -10C. What is its new temperature?
•-20.2C
No.16 If a boat is floating on the surface of the water we can conclude that• the buoyant force is larger than the weight
of the ship• the buoyant force is equal to the weight of
the ship. • its lack of natural buoyancy is compensated
for by the drive of the engines. • the buoyant force is not great enough to
drag it under the water.
No.16 If a boat is floating on the surface of the water we can conclude that
•the buoyant force is larger than the weight of the ship
No.17 The temperature of an object is raised by 50C. This is equivalent to an increase in its absolute temperature of • 28 K• 50 K• 90 K• 323 K
No.17 The temperature of an object is raised by 50C. This is equivalent to an increase in its absolute temperature of
•323 K
No.18 The average kinetic energy of ice particles__________ as ice melts.• Decreases• increases• reduced to zero • remains constant
No.18 The average kinetic energy of ice particles__________ as ice melts.
•remains constant
No.19 How much heat is released to turn 2.5 kg steam at 100 ºC to water at 100 ºC?• -6.70 x 106 J• -6.16 x 106 J• -7.12 x 106 J• -5.65 x 106 J
No.19 How much heat is released to turn 2.5 kg steam at 100 ºC to water at 100 ºC?
-5.65 x 106 J
No.20 Friction that you feel when you rub your hands together was changed from __________ to heat.• Sound • thermal• nuclear• kinetic
No.20 Friction that you feel when you rub your hands together was changed from __________ to heat.
•kinetic
No.21 –273.15°C is known as _____.•Absolute zero• the freezing point• the point of radiation• specific heat
No.21 –273.15°C is known as _____.
•Absolute zero
No.22 _____ is the state in which the rate of energy flow between two objects is equal and the objects are at the same temperature.• Temperature limit• dynamic equilibrium• thermal equilibrium• thermometry
No.22 _____ is the state in which the rate of energy flow between two objects is equal and the objects are at the same temperature.
•thermal equilibrium
No.23 The amount of energy needed to melt 1 kg of a substance is called the _____.• Boiling point• heat of fusion• heat of vaporization• specific heat
No.23 The amount of energy needed to melt 1 kg of a substance is called the _____.
•heat of fusion
No.24 How much heat is needed to convert a 2.0-kg sample of liquid methanol into a gas?[ Hv of methanol is 8.78 x 105 J/kg]
• 5.5×104 J• 2.2×105 J• 4.4×105 J• 1.8×106 J
No.24 How much heat is needed to convert a 2.0-kg sample of liquid methanol into a gas?[ Hv of methanol is 8.78 x 105 J/kg]
•1.8×106 J
No.26 A box weighing 360 N rests on the ground. The bottom of the box measures 0.30 m by 0.20 m. How much pressure does the box exert on the ground?• 3.2×103 Pa• 4.0×103 Pa• 5.0×103 Pa• 6.0×103 Pa
No.26 A box weighing 360 N rests on the ground. The bottom of the box measures 0.30 m by 0.20 m. How much pressure does the box exert on the ground?
•6.0×103 Pa
No.27 If the density of water is 1.00×103 kg/m3, how much pressure is exerted on an object by a 50.0-m column if water?• 5.10×104 Pa• 5.00×104 Pa• 4.90×105 Pa• 1.96×105 Pa
No.27 If the density of water is 1.00×103 kg/m3, how much pressure is exerted on an object by a 50.0-m column if water?
•4.90×105 Pa
No.28 The pistons of a hydraulic lift have diameters of 3.0 cm and 12.2 cm. A force exerted on the smaller piston lifts a maximum load of 475 N. What force is required to lift this load?• 9.6 N• 21 N• 29 N• 39 N
No.28 The pistons of a hydraulic lift have diameters of 3.0 cm and 12.2 cm. A force exerted on the smaller piston lifts a maximum load of 475 N. What force is required to lift this load?
No.28 The pistons of a hydraulic lift have diameters of 3.0 cm and 12.2 cm. A force exerted on the smaller piston lifts a maximum load of 475 N. What force is required to lift this load?
•29 N
No.29 Which is equal to 20.0 cm2?•0.2 m2
•0.02 m2
•0.002 m2
•0.0002 m2
No.29 Which is equal to 20.0 cm2?
•0.002 m2
No.30 What causes air pressure?• air particles vaporize• air particles hit an object• air particles flows through an
object• air particles suck away from the
object
No.30 What causes air pressure?
•air particles hit an object
No.31 • If you wanted to use a setup like the one in
the figure on the right to create an upward force triple that of the down ward force you exert, which of the following combination of piston areas could accomplish this?
• A1, 6 m2; A2,10 m2
• A1, 6 m2; A2, 8 m2
• A1, 6 m2; A2, 18 m2
• A1, 6 m2; A2, 2 m2
No.31 • If you wanted to use a setup like the one in
the figure on the right to create an upward force triple that of the down ward force you exert, which of the following combination of piston areas could accomplish this?
•A1, 6 m2; A2, 18 m2
No.32 Which of the following does pressure in water not depend on?• Depth• shape • density• gravity
No.32 Which of the following does pressure in water not depend on?
•shape
No.33 states that any change in pressure applied to any point on a confined fluid is transmitted undiminished throughout the fluid• Pascal’s Principle• Boyle’s Law• Galileo’s Law• Archimedes’ Principle
No.33 states that any change in pressure applied to any point on a confined fluid is transmitted undiminished throughout the fluid
•Pascal’s Principle
No.34 Which is an example of Pascal's principle?•A straw• a siphon•hydroplaning wheels• hydraulic brakes
No.34 Which is an example of Pascal's principle?
•hydraulic brakes
No.35 which of the following does buoyant force of water NOT depend on?• Gravity• density of fluid• density of material• Volume of displaced liquid
No.35 which of the following does buoyant force of water NOT depend on?
•density of material
No.36 In the figure on the right, if the chunk of steel were cut in half and one of the pieces were placed in the same liquid, how would it behave? • It would float mostly submerged• It would sink to the bottom of the
container.• There is insufficient information to
answer the question.• It would float almost entirely above the
surface.
No.36 In the figure on the right, if the chunk of steel were cut in half and one of the pieces were placed in the same liquid, how would it behave?
•It would float mostly submerged
No.37 What type of buoyancy results in a feeling of weightlessness?• Positive• neutral• changing• negative
No.37 What type of buoyancy results in a feeling of weightlessness?
•neutral
No.38 According to the Archimedes principle which of the following is equal to the buoyant force acting on an object?• the mass of the fluid displaced by the
object• the weight of the object displaced by the
fluid• the force that holds the object afloat• the weight of the fluid displaced by the
object
No.38 According to the Archimedes principle which of the following is equal to the buoyant force acting on an object?
•the weight of the fluid displaced by
the object
No.39 Acetone, methyl alcohol, milk, and blood plasma have densities 792, 810, 1035 and 1030 kg/m3, respectively. Which of these fluids will exert the greatest buoyant force on an object immersed in it?• acetone • methyl alcohol• milk• blood plasma
No.39 Acetone, methyl alcohol, milk, and blood plasma have densities 792, 810, 1035 and 1030 kg/m3, respectively. Which of these fluids will exert the greatest buoyant force on an object immersed in it?
•blood plasma
No.40 A gold crown (density is 19,300 kg/m3) weighs 40 N in air. What will it weigh when suspended in sunflower oil whose density is 920 kg/m3?• 38.10 N• 37.93 N• 390.10 N• 21.34 N
No.40 A gold crown (density is 19,300 kg/m3) weighs 40 N in air. What will it weigh when suspended in sunflower oil whose density is 920 kg/m3?
No.40 A gold crown (density is 19,300 kg/m3) weighs 40 N in air. What will it weigh when suspended in sunflower oil whose density is 920 kg/m3?
38.10 N
No.41 Which of the following quantities is independent of the size and shape of an object composed of a given material?• volume• mass• weight• density
No.41 Which of the following quantities is independent of the size and shape of an object composed of a given material?
•density
No.42 The density of brass is 8.4 g/cm3. What is the approximate volume of a 200-g brass monkey?• 0.042 cm3
• 0.41 cm3 • 24 cm3
• 170 cm3
No.42 The density of brass is 8.4 g/cm3. What is the approximate volume of a 200-g brass monkey?
•24 cm3
No.43 A graduated cylinder, initially have 25 mL of water, when 8 g silly putty is placed in it - the water level rose to 29 mL. What is the density of the silly putty? • 4 g/cm3
• 2 g/cm3 • 0.5 g/cm3
• 0.27 g/cm3
No.43 A graduated cylinder, initially have 25 mL of water, when 8 g silly putty is placed in it - the water level rose to 29 mL. What is the density of the silly putty?
•2 g/cm3
No.44 Which of the following correctly describes the relationship between the amount of fluid pressure at each piston, and the amount of force exerted on each piston?• The fluid pressure by the smaller piston is larger, but
the fluid exerts the same amount of force on each piston.
• The fluid pressure is the same at both pistons and so is the amount of force exerted on each piston.
• The fluid pressure is the same at both pistons, but more force is exerted on the larger piston.
• The fluid pressure is larger at the larger piston, and so is the force.
No.44 Which of the following correctly describes the relationship between the amount of fluid pressure at each piston, and the amount of force exerted on each piston?
• The fluid pressure is the same at both pistons, but more force is exerted on
the larger piston.
No.45 What is the smallest weight of a person who could successfully lift the elephant?• 62.5 N• 102 N• 250 N• 613 N
No.45 What is the smallest weight of a person who could successfully lift the elephant?• 62.5 N• 102 N• 250 N• 613 N
1.00 x 103-kg
0.5 m
No.45 What is the smallest weight of a person who could successfully lift the elephant?
1.00 x 103-kg
0.5 m
No.45 What is the smallest weight of a person who could successfully lift the elephant?
•613 N1.00 x 103-kg
0.5 m
No.46 A 25 kg rock suspended by a wire is lowered into a tank of water until it is fully submerged as shown in the diagram below. The density of the rock is 2800 kg/m3 and the density of the water is 1000 kg/m3.Calculate the magnitude of the buoyant force acting on the rock.• 245 N • 112 N• 87.5 N• 158 N
No.46 A 25 kg rock suspended by a wire is lowered into a tank of water until it is fully submerged as shown in the diagram below. The density of the rock is 2800 kg/m3 and the density of the water is 1000 kg/m3.Calculate the magnitude of the buoyant force acting on the rock.
No.46 A 25 kg rock suspended by a wire is lowered into a tank of water until it is fully submerged as shown in the diagram below. The density of the rock is 2800 kg/m3 and the density of the water is 1000 kg/m3.Calculate the magnitude of the buoyant force acting on the rock.
•87.5 N
No.47 A 25 kg rock suspended by a wire is lowered into a tank of water until it is fully submerged as shown in the diagram below. The density of the rock is 2800 kg/m3 and the density of the water is 1000 kg/m3.Determine the tension in the wire.
No.47 A 25 kg rock suspended by a wire is lowered into a tank of water until it is fully submerged as shown in the diagram below. The density of the rock is 2800 kg/m3 and the density of the water is 1000 kg/m3.Determine the tension in the wire.
•158 N
No.48 Which equations relate to density?•D = m*V•D = m+V•m = DV•V = D/m
No.48 Which equations relate to density?
•m = DV
No. 49The linear expansion coefficient for silver is 2.0 x10-5/C°. A 6-inch long bar of silver is heated from 0 to 100°C. The increase in length is approximately A. 0.060 inches B. 0.12 inches C. 0.012 inches D. 0.0060 inches
No. 49The linear expansion coefficient for silver is 2.0 x10-5/C°. A 6-inch long bar of silver is heated from 0 to 100°C. The increase in length is approximately
C. 0.012 inches
No. 50the coefficient of linear expansion will vary only with the change in • temperature• initial length • thermal energy•material
No. 50the coefficient of linear expansion will vary only with the change in
•material
PROBLEM SOLVING
Write the equation, solve
it later.
No. 51A 5 kg piece of zinc at 50 oC is placed in a container of water. The water has a mass of 10 kg and has a temperature of 25 oC before the zinc was added. What is the final temperature of the water and the zinc?
No. 52A 600 g sample of water at 40oC mixed with 900 g sample of methanol at 16 oC. Assume no heat loss to the surroundings. What is the final temperature of the mixture?
No. 53How much heat is needed to raise the temperature of 980 g of water from 20 oC to 110 oC?From 20oC – 100oC
During vaporization
From 100oC to 110oC
No. 54How much is heat was lost to a 5 kg of water if its temperature decreases form 15 oC to 5 oC?
No. 55How much heat is absorbed by 1.45 kg ice at -5 oC to become liquid at 25 oCFrom -5oC – 0oC
During melting
From 0oC to 25oC
No. 56A 400-g sample of water at 70ºC is mixed with 100-g sample of methanol at 20ºC. Assume no heat loss to the surroundings. What is the final temperature of the mixture?
No. 57The input piston of a hydraulic press is 20 mm in diameter, and the output piston is 10 mm in diameter. How much output force will an input force of 1.0 N produce?
No.58 A gold crown (density is 19,300 kg/m3) weighs 100 N in air. What will it weigh when suspended in sunflower oil whose density is 920 kg/m3?
No.59 The density of brass is 8.4 g/cm3. What is the approximate volume of a 200-g brass monkey?
No.60 In a machine shop, a hydraulic lift is used to raise heavy equipment for repairs. The system has a small piston with a cross sectional area of 0.01 m2 and a large piston with cross sectional area of 0.20 m2. How much load can be lifted by the large piston if 150 N of force is exerted into the small piston?
No.61 The pistons of a hydraulic lift have diameters of 3.0 cm and 12.2 cm. A force exerted on the smaller piston lifts a maximum load of 475 N. What force is required to lift this load?
No.62 An 8.3-kg object with a volume of 8.6×10-4 m3 is submerged in water. What is the buoyant force on the object?
No.63 A box weighing 360 N rests on the ground. The bottom of the box measures 0.30 m by 0.20 m x 10 m. How much pressure does the box exert on the ground?
No.1 You try to lift your friend [m = 85.0 kg] using a hydraulic system. The two circular pistons at the end of the hydraulics have diameters 6.00 cm and 25.0 cm. Your friend sits directly on top of the larger piston. [Assume that both pistons are at the same vertical height]. What force must you exert on the smaller piston to be able to support your friend at rest to lift your friend with the larger piston?
No.64 A brick of 10 cm x 5 cm x 11 cm rest on the ground on its smallest face. The brick has a density of 5 g/cm3. What pressure does it exert on the ground?
No.67 A crown is weighed in air and submerged in water. The scale reads 7.84 N in air and 6.86 N in water. Find A.The buoyant force B.The volume of the crown C. The density of the crown
No. 68How much heat is required to convert 1.50 kg of ice at -5.00C to vapor at 110C? From -5oC – 0oC
During melting
From 0oC to 100oC
During Vaporization
From 100oC to 110oC
HOMEWORKAnswer the rest of the questions!
WRAP UPNone
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