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16. When water freezes, it expands about nine percent. What
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# Question :   16. When water freezes, it expands about nine percent. What : 2102186

16. When water freezes, it expands about nine percent. What would be the pressure increase inside your automobile engine block if the water in there froze? (The bulk modulus of ice is 2.0 ´ 109 Pa, and 1 atm = 1.0 ´ 105 Pa.)

A. 18 atm

B. 270 atm

C. 1 080 atm

D. 1 800 atm

17. The Greenland ice sheet can be one km thick. Estimate the pressure underneath the ice. (The density of ice is 918 kg/m3.)

A. 9.0 ´ 105 Pa (9 atm)

B. 2.5 ´ 106 Pa (25 atm)

C. 4.5 ´ 106 Pa (45 atm)

D. 9.0 ´ 106 Pa (90 atm)

18. What is the total mass of the Earth's atmosphere? (The radius of the Earth is 6.4 ´ 106 m, and atmospheric pressure at the surface is 105 N/m2.)

A. 5 ´ 1016 kg

B. 1 ´ 1018 kg

C. 5 ´ 1018 kg

D. 1 ´ 1020 kg

19. A solid object is made of two materials, one material having density of 2 000 kg/m3 and the other having density of 6 000 kg/m3. If the object contains equal volumes of the materials, what is its average density?

A. 3 000 kg/m3

B. 4 000 kg/m3

C. 5 300 kg/m3

20. A solid object is made of two materials, one material having density of 2 000 kg/m3 and the other having density of 6 000 kg/m3. If the object contains equal masses of the materials, what is its average density?

A. 3 000 kg/m3

B. 4 000 kg/m3

C. 5 300 kg/m3