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  36. What volume of water displaced by a submerged 2.0-kg

Question :   36. What volume of water displaced by a submerged 2.0-kg : 2102190

 

36. What volume of water is displaced by a submerged 2.0-kg cylinder made of solid aluminum? (aluminum density = 2.7 ´ 103 kg/m3 and water density = 1.0 ´ 103 kg/m3)

A. 7.4 ´ l0-4 m3

B. 1.4 ´ 103 m3

C. 9.9 ´ 103 m3

D. 6.0 ´ 102 m3

37. A ping-pong ball has an average density of 0.0840 g/cm3 and a diameter of 3.80 cm. What force would be required to keep the ball completely submerged under water?

A. 1.000 N

B. 0.788 N

C. 0.516 N

D. 0.258 N

38. A cube of wood of density 0.78 g/cm3 is 10 cm on a side. When placed in water, what height of the block will float above the surface? (water density = 1.00 g/cm3)

A. 7.8 cm

B. 5.0 cm

C. 2.2 cm

D. 6.4 cm

39. The bottom of a flat-bottomed aluminum boat has an area of 4.0 m2 and the boat's mass is 60 kg. When set afloat in water, how far below the water surface is the boat bottom? (water density = 1.0 ´ 103 kg/m3)

A. 0.060 m

B. 0.015 m

C. 0.030 m

D. 0.075 m

40. The bottom of a flat-bottomed aluminum boat has area = 4.0 m2 and mass = 60 kg. If two fishermen and their fishing gear with total mass of 300 kg are placed in the boat, how much lower will the boat ride in the water? (H2O density = 1.0 ´ 103 kg/m3)

A. 0.15 m

B. 0.090 m

C. 0.075 m

D. 0.060 m

 

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