Consider a hot block of metal with surface temperature of 50ºC placed on a table surrounded by air with temperature of 20ºC, show what mechanism does the heat exchange with the surrounding? If now a fan was forcing air around it, how the heat transfers from it show that with equation and consider the block was inclined by 20º, compare between the two cases in term of the rate of heat transfer

Q: Suppose a 500 g of aluminum block at 230C is placed in 400 g of 400C water. Calculate the final…

A: Given, m(al)= 500g T(ini-al)= 23°C m(wt)= 400g T(ini-wt)= 40°C cp(wt)= 1 cal/g°C cp(al)= 0.215…

Q: The world’s fastest airplane, the SR-71 blackbird had a length of 33 m. When it lands after a long…

A: Given that:- Length of blackbird=33m

Q: A 0.450-kg of ice is initially at temperature of -9.0 °C. How much heat is required to melt…

A: To melt ice , Whole ice should be at 0°C. 1. Heat required to change temperature from -9°C to 0°C Q1…

Q: A 0.65kg sphere at 362K is dropped intoa thermally insulated Container with I kg of cwater at 30ok.…

A: mass of sphere = 0.65 kg temperature of sphere = 362 K mass of water = 1 kg temperature of water =…

Q: A closed rigid tank filled with water initially at 20 bar, a quality of 80% and a volume of 0.5 m3…

A: Given,'

Q: Can a rooom be cooled by keeping the door of refrigerator open?

A:

Q: How much heat is added by the pump to 1 pound of the refrigerant and mustbe removed without doing…

A: We have to find that how much heat is added by the pump to 1 pound of the refrigerant and must be…

Q: show complete solution, and give an explanation When 100 kJ of work is done on a closed system…

A:

Q: Find the heat flow during 300 minutes through a glass window of thickness 0.15 inches with that is 7…

A:

Q: our camp fuel has an energy density of 50 kJ/g. Assuming perfect efficiency how much fuel does it…

A: This is the question of thermodynamics. While converting ice to water three types of heat energy are…

Q: How much total heat energy (in Joules) must be transferred to raise the temperature of a 0.140-kg…

A: It is given that,                         The mass of the piece of the ice is m=0.140 kg…

Q: A wire is fixed at two points and is under tension. The tension (Select] with rising temperature and…

A: Given data Wire fixed between two points Under tension Required: Effect on tension as change in…

Q: Calculate the time needed to boil 2kg of water in a kettle if a constant supply of heat at 1.25kW is…

A: Mass of water, m=2 kg Power supplied by the kettle, P=1.25 kW Room temperature of the water, T1=25°C…

Q: Calculate the total thermal energy in a gram of lead at roomtemperature, assuming that none of the…

A: If the number of molecules is N with each f degree of freedom, then the total thermal energy of the…

Q: A power plant extracts potential energy from a river to provide electrical power. The average amount…

A: As there are two questions, first one is solved.