Question 300: Thermodynamics & KTG

Question

The height of victoria falls is 63 m. What is the difference in temperature of water at the top and at the bottom of fall?
[Given 1 cal = 4.2 J and specific heat of water = 1 cal g
$$-$$1
$$^\circ$$0C
$$-$$1
]

Accepted Answer

Change in P.E. = Heat energy
mgh = mS$$\Delta$$T
$$\Delta$$T = $${{gh} \over S}$$
= $${{10 	imes 63} \over {4200J/kgC}}$$
= 0.147$$^\circ$$C

Answer

0.147$$^\circ$$ C

Answer

14.76$$^\circ$$ C

Answer

1.476$$^\circ$$ C

Answer

0.014$$^\circ$$ C

Thermodynamics & KTG

The height of victoria falls is 63 m. What is the difference in temperature of water at the top and at the bottom of fall? [Given 1 cal = 4.2 J and specific heat of water = 1 cal g $-1 ^\circ0C -$1 ]

Choose the correct answer: