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