Do Now (3/22/12):

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Do Now (3/22/12)

1. Make a list of concepts you need to know for your
   test tomorrow

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Ms. Timsons

• Review to Conquer Physics

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Rules of the Game

• There will be tribes, as divided by the teacher
• For each problem which appears on the slide, the
  tribe will be able to work together to vote on
  one answer given only the time which will be
  written on the slide.
• Tribes cast their answer using their voting cards
  only in the time allowed.
• Each team with a correct answer is allowed to
  cast one vote to remove another tribe from the
  island. The teacher will have each tribe cast
  their vote simultaneously by writing the color of
  the tribe they are voting for on their white
  board. The teacher will then remove tribes from
  the island.
• The teacher will track which tribes are in and
  which tribes are out of the game with signs on
  the board.
• If a tribe is voted out, they can reenter the
  game by answering the next question correctly to
  reenter. They will NOT receive a vote for that
  question but must wait until the next question.
• Winning tribes will be those still on the island
  at the end of the game.
• The teacher will be the final judge of any
  conflicts or confusions and remember, be
  respectful and be honest!

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• 1. The density of brass is 8.4 g/cm3. What is the
  approximate volume of a 200-g brass monkey?
• 0.042 cm3
• B. 0.41 cm3
• C. 24 cm3
• D. 170 cm3
• 1 minute

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• 2. A copper pipe is 100.0 meters long at 5.00 oC.
  The pipe is heated to 95.0 oC. The coefficient of
  linear expansion for copper is 2.00 x 10-5 / oC.
  The change in length of the copper pipe is _____
  meter(s).
• 0.0018
• B) 0.018
• C) 0.18
• D) 1.8
• E) 18
• AB) 180
• 70 seconds

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• 3. What is the pressure of a 3 kg block whose
  area is 4 m2 ?
• 0.75 Pa
• 1.25 Pa
• 7.4 Pa
• 12.5 Pa
• 60 seconds

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• 4. According to 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
• 50 seconds

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• 5. 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
• B. methyl alcohol
• C. milk
• D. blood plasma
• 30 seconds

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• 6. The 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?
• 0.25 N
• B. 0.50 N
• C. 2.0 N
• D. 4.0 N
• 1 minute 30 seconds

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• 7. A steel bridge segment is 20 m long at 18C.
  At what temperature will the bridge segment be
  0.02 m longer? The coefficient of linear
  expansion of steel is 12 x 10-6/C.
• 76.54C
• B. 87.95C
• C. 101.33 C
• D. 121.16C
• 1 minute 15 seconds

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• 8. Which of the following quantities is
  independent of the size and shape of an object
  composed of a given material?
• volume
• B. mass
• C. weight
• D. density
• 30 seconds

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• 9. A gold crown (density is 19,300 kg/m3) weighs
  40 N in air. What is the buoyant force when
  suspended in sunflower oil whose density is 920
  kg/m3?
• 40 N
• B. 1.9 N
• C. 30 N
• D. 21.34 N
• 1 minute

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• 10. Which of the following statements is true
  according to Pascal's principle?
• Pressure in a fluid is greatest at the walls of
  the container holding the fluid
• b. Pressure in a fluid is greatest at the center
  of the fluid
• c. Pressure in a fluid is the same throughout the
  fluid
• d. Pressure in a fluid is greatest at the top of
  the fluid
• 30 seconds

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• 11. As a whale swims deeper into the ocean,
  increasing water pressure squeezes its volume,
  making it smaller. As the whale swims deeper and
  deeper, the buoyant force on it _____.a.
  increasesb. remains unchangedc. decreases
• 45 seconds

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• 12. A car with mass 1300 kg has 0.127 m2 of tire
  in contact with the road.
• How much does the car weigh?
• 1300 N
• 132 N
• 12700 N
• 0.127 N
• 45 seconds

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• 13. A car with mass 1300 kg has 0.127 m2 of tire
  in contact with the road.
• How much pressure does the car exert on the road?
• 10236 Pa
• 100,000 Pa
• 1447 Pa
• 1612 Pa
• 45 seconds

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• 14. A cube of stainless steel, (0.3 m on each
  side ) is completely submerged in water. What is
  the buoyant force on the cube? The density of
  water is 1000 kg/m3 and the density of steel is
  7850 kg/m3)a. 2940 Nb. 2077 Nc. 260 N
• d. 23079 N
• 45 seconds

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• 15. A cube of stainless steel, (0.3 m on each
  side ) is completely submerged in water. What is
  the buoyant force on the cube? The density of
  water is 1000 kg/m3 and the density of steel is
  7850 kg/m3) What will happen to the cube?a.
  sinkb. floatc. neither
• 45 seconds

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• 9. 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
• B. 37.93 N
• C. 390.10 N
• D. 21.34 N
• 1 minute

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• 12. A 40 kg outboard motor slips off the back of
  a boat and sinks in the lake. When the owner
  dives to the bottom of the lake to retrieve the
  motor, he notices that he only has to exert 300
  Newtons of force to lift the motor off the lake
  bottom. When he lifts the motor out of the water
  onto the boat, he has to exert 400 Newtons of
  force. What is the buyoant force of the motor in
  the water?
• a. 300 N
• b. 400 N
• c. 100 N
• 20 seconds

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• 13. A physicist plans to change 100 grams (0.100
  kg) of ice at 10.0 oC into 100 g of water at 50
  oC. The heat required to melt the ice from 0C
  is
• 0 J
• B) 206 J
• C) 334 J
• D) 2060 J
• E) 33400 J
• AB) 226000 J
• 1 minute

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• 14. A physicist plans to change 100 grams (0.100
  kg) of ice at 10.0 oC into 100 g of water at 50
  oC. The heat required to raise the temperature of
  the melted ice at 0C to 50oC is ____ .
• A) 20.9 J B) 209 J C) 2090 J
  D) 20900 J
• 1 minute

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Congratulations!Good luck tomorrow!I know you
can conquer your test ?