# Ch09 - Chapter 9 Solids and Fluids CHAPTER 9 1 Which state of matter is associated with the very highest of temperatures a liquid b plasma c gas d

This preview shows pages 1–4. Sign up to view the full content.

Chapter 9, Solids and Fluids C HAPTER 9 1. Which state of matter is associated with the very highest of temperatures? a. liquid b. plasma c. gas d. solid 2. A copper wire of length 2.0 m, cross sectional area 7.1 × 10 6 m 2 and Young’s modulus 11 × 10 10 N/m 2 has a 200-kg load hung on it. What is its increase in length? ( g = 9.8 m/s 2 ) a. 0.50 mm b. 1.0 mm c. 2.5 mm d. 5.0 mm 3. What is the total force on the bottom of a 2.0-m-diameter by 1.0-m-deep round wading pool due to the weight of the air and the weight of the water? (Note the pressure contribution from the atmosphere is 1.0 × 10 5 N/m 2 , the density of water is 1 000 kg/m 3 , and g = 9.8 m/s 2 .) a. 3.4 × 10 5 N b. 2.4 × 10 6 N c. 3.2 × 10 6 N d. 6.0 × 10 6 N 5. A piece of aluminum has density 2.70 g/cm 3 and mass 775 g. The aluminum is submerged in a container of oil (oil’s density = 0.650 g/cm 3 ). How much oil does the metal displace? a. 287 cm 3 b. 309 cm 3 c. 232 cm 3 d. 1 125 cm 3 104

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 9, Solids and Fluids 6. A piece of aluminum has density 2.70 g/cm 3 and mass 775 g. The aluminum is submerged in a container of oil of density 0.650 g/cm 3 . A spring balance is attached with string to the piece of aluminum. What reading will the balance register in grams (g) for the submerged metal? a. 960 g b. 775 g c. 588 g d. 190 g 7. A block of wood has density 0.50 g/cm 3 and mass 1 500 g. It floats in a container of oil (the oil’s density is 0.75 g/cm 3 ). What volume of oil does the wood displace? a. 3 000 cm 3 b. 2 000 cm 3 c. 1 500 cm 3 d. 1 000 cm 3 11. In a large tank of liquid, the hydrostatic pressure at a given depth is a function of: a. depth b. surface area c. liquid density d. choices a and c are both valid 14. A 15 000-N car on a hydraulic lift rests on a cylinder with a piston of radius 0.20 m. If a connecting cylinder with a piston of 0.040-m radius is driven by compressed air, what force must be applied to this smaller piston in order to lift the car? a. 600 N b. 1 500 N c. 3 000 N d. 15 000 N 15. By what factor is the total pressure greater at a depth of 850 m in water than at the surface where pressure is one atmosphere? (water density = 1.0 × 10 3 kg/m 3 , 1 atmosphere pressure = 1.01 × 10 5 N/m 2 and g = 9.8 m/s 2 ) a. 100 b. 83 c. 74 d. 19 16. What volume of water is displaced by a submerged 2.0-kg cylinder made of solid aluminum? (aluminum density = 2.7 × 10 3 kg/m 3 and water density = 1.0 × 10 3 kg/m 3 ) a. 7.4 × l0 4 m 3 b. 1.4 × 10 3 m 3 c. 9.9 × 10 3 m 3 d. 6.0 × 10 2 m 3 105
Chapter 9, Solids and Fluids 17. A ping-pong ball has an average density of 0.0840 g/cm 3 and a diameter of 3.80 cm. What force would be required to keep the ball completely submerged under water? a. 1.000 N

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 07/25/2008 for the course PHY 231C taught by Professor Pratt during the Spring '06 term at Michigan State University.

### Page1 / 11

Ch09 - Chapter 9 Solids and Fluids CHAPTER 9 1 Which state of matter is associated with the very highest of temperatures a liquid b plasma c gas d

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online