5. Which part of a river will feature slower moving water? a. a wide, deep part.

Question

5. Which part of a river will feature slower moving water? a. a wide, deep part. b. a narrow, shallower part. c. Water will flow at the same rate in all parts. d. The only thing that matters is how steep the river is. 6. A parcel of warmed air rises due to a. random molecular motion b. radiation c. increased energy of its molecules d. buoyancy 13. If you continuously apply heat at a continuously apply heat at a constant rate to chunk of -17F ice, what will happen? a.The temperature will increase indefinitely b. The temperature will increase at constant rate without pause but the ice will melt at 32F c. The temperature will increase at a constant rate but stop increasing at 32F until the ice is fully melted and then continue. d. The temperature will increase at a constant rate until 32F where it will increase at a slower rate while the ice melts. 15.A volume of air that is compressed with no heat entering or leaving becomes a. cooler. b. remain unchanged. c. warmer d. none of the above.

Explanation / Answer

5. a. a wide, deep part ( because AV = CONSTATNT for the water where A = area of cross section , v= velocity)

6.c. increased energy of its molecules ( on heating molecules gains kinetic energy and is capable of moving up)

13.c. The temperature will increase at a constant rate but stop increasing at 32F until the ice is fully melted and then continue ( at melting point the energy will be used in providing the latent heat of fusion so temp. stops increasing while the ice melts)

15. becomes warmer ; because mechanical energy is being provided to the molecules through compression and since the process is adiabatic the air becomes warmer.

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.