Do Now (3/22/12): 1.Make a list of concepts you need to know for your test tomorrow

Ms. Timson’s Review to Conquer Physics

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!

1. The density of brass is 8.4 g/cm 3. What is the approximate volume of a 200-g brass monkey? A cm 3 B cm 3 C. 24 cm 3 D. 170 cm 3 1 minute

2. A copper pipe is meters long at 5.00 o C. The pipe is heated to 95.0 o C. The coefficient of linear expansion for copper is 2.00 x / o C. The change in length of the copper pipe is _____ meter(s). A) B) C) 0.18 D) 1.8 E) 18 AB) seconds

3. What is the pressure of a 3 kg block whose area is 4 m 2 ? A.0.75 Pa B.1.25 Pa C.7.4 Pa D.12.5 Pa 60 seconds

4. According to Archimedes principle which of the following is equal to the buoyant force acting on an object? A.the mass of the fluid displaced by the object B.the weight of the object displaced by the fluid C.the force that holds the object afloat D.the weight of the fluid displaced by the object 50 seconds

5. Acetone, methyl alcohol, milk, and blood plasma have densities 792, 810, 1035 and 1030 kg/m 3, respectively. Which of these fluids will exert the greatest buoyant force on an object immersed in it? A.acetone B. methyl alcohol C. milk D. blood plasma 30 seconds

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? A.0.25 N B N C. 2.0 N D. 4.0 N 1 minute 30 seconds

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

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

9. A gold crown (density is 19,300 kg/m 3 ) weighs 40 N in air. What is the buoyant force when suspended in sunflower oil whose density is 920 kg/m 3 ? A.40 N B. 1.9 N C. 30 N D N 1 minute

10. Which of the following statements is true according to Pascal's principle? a.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

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. increases b. remains unchanged c. decreases 45 seconds

12. A car with mass 1300 kg has m 2 of tire in contact with the road. How much does the car weigh? A.1300 N B.132 N C N D N 45 seconds

13. A car with mass 1300 kg has m 2 of tire in contact with the road. How much pressure does the car exert on the road? A Pa B.100,000 Pa C.1447 Pa D.1612 Pa 45 seconds

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 N b N c. 260 N d N 45 seconds

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. sink b. float c. neither 45 seconds

9. A gold crown (density is 19,300 kg/m 3 ) weighs 40 N in air. What will it weigh when suspended in sunflower oil whose density is 920 kg/m 3 ? A N B N C N D N 1 minute

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

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

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

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