University of South Florida Physics Calculations Questions

Part A)

1. Convert the following:

(i) 74°C to Fahrenheit scale (2 marks).

(ii) 217°F to Kelvin scale (2 marks).

2. During the peak of the summer period in Sohar, an oil truck loaded 80,000 liters gas. On the way to Buremi to deliver the gas product, the temperature dropped due to cold weather where the temperature was 24 K lower than Sohar.

Determine how many liters the oil truck delivered (6 marks).

Take the coefficient of volume expansion for gas to be 9.50 × 10?4/°C , and the coefficient of linear expansion for the steel truck to be 11 × 10?6/°C.

3. 4500J of heat was absorbed from a Carnot engine from a reservoir at 650K. The engine did some work, and discards some heat to a sink at 350K. Evaluate:

(i) The heat that is discarded (2 marks)

(ii) The work the engine did (2 marks)

(iii) The efficiency of the system (2 marks)

4. A box with total wall area of 0.6??2 and wall thickness 3???? is used to cool drinks. The inner and outer surface of the box are 0°C and 50°C respectively. Determine:

1. (i) The rate of heat flow into the box (2 marks)
2. (ii) The total heat flow in one day (2 marks)
3. (iii) The mass of ice melted (2 marks)

5. The density and height of the block shown in Figure Q5 are 750 ???????3 and 21 ???? respectively. The block floats face down in a fluid whose density is 1660 ???????3. Evaluate the following:

(i) The depth h at which the block submerged (4 marks)

(ii) The acceleration of the block, if it is held fully submerged and then released (4 marks)

Part B)

I chose task 3

Task 3:

Submit a report and give a presentation on the application of the following thermal physics areas in engineering and production processes.

1. • ? Thermal expansion
   • ? Thermal conductivity
   • ? Lee’s disc- determination of thermal conductivity of a bad conductor
   • ? Newton’s laws of cooling
   • ? Laws of thermodynamicsNote: Total word limit is 2,000. Group size may vary.

   check the attached file for all the questions and requirements plgraism freesubmit it with the attached cover sheet