Assume the isobaric expansion coefficient (ap) of gasoline to be the same as that of benzene. If you add 5.0 gal, how much money could you save by filling the tank in the morning compared to the afternoon? Assume that temperature differential between morning and afternoon to be 5 °C and the price of gasoline to be $3.00 gal'.

Calculate the energy associated with a radiation having wavelength 3000 Å. Give the answer in kcal mol-¹ and also in kJ mol-¹.

A person is trying to keep cool on a hot summer day by using a fan and exposing his/her body to air flow. The air temperature is To = 32°C, and the fan is blowing air at a velocity of vo = 5 m/s. The surrounding surfaces are at Tsur = 40°C, and the emissivity of the person can be taken as ɛ = 0.9. If the person is doing light work and generating sensible heat at a rate of 90 W, determine the average temperature of the outer surface of the person. The average human body can be treated as a 30-cm diameter cylinder with an exposed surface area of 1.7 m?.

6. Determine the temperature of water at a state of P = 400 kPa and h = 3300 kJ/kg.

A 4.0-cm cube of aluminum is initially at 450◦C and is suddenly exposed to aconvection environment at 100◦C with h=120 W/m2 · ◦C. How long does it takethe cube to cool to 250◦C?

The rate of heat transfer from a body to the surroundings is governed by the following equation: D= hA(Tsur - Tbody) Where dis the heat transfer rate (J/s) h is the heat transfer coefficient A is the heat transfer area (m²) Tsur is the temperature of the surroundings (K) Tpody, is the temperature of the body (K) Find the units for the heat transfer coefficient, h.

If solar radiation intensity is 700 W/m² in NJ, how much solar energy arrives at a solar collector with an area of 2 m² in 12 hours? If the solar collector can convert 33% of solar energy collected to electricity, how much electricity (kWh) will be generated?

For chemical Engineers. The specific volume of wet steam at 500 kpa is 0.2813 m3/kg. using the data from steam tables, determine the quality of steam

The wall of a spherical steel tank k, = 17 m. K thick contains hot oil at 100°C. On the outside of the tank 10mm of spray W urethane insulation k, = 0.026 m. K of 1m in diameter and 100 mm h = 16. is added to stop the oil from cooling. If the outside temperature is 25°C, W m².K needs to be added to keep the tank at 100°C for pumping reasons? What are the overall heat transfer coefficients (Uo and Ui)? and h = 5 (₁ m². K how much heat

Air is contained in a vertical piston–cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 101.325 kPa on the top of the piston, which has a mass of 50 kg and a face area of 0.10 m 2 . Electric current passes through the resistor, and the volume of the air slowly increases by 2 ft3 while its pressure remains constant. The mass of the air is 0.32 kg, and its specific internal energy increases by 20 Btu/lb. The air and piston are at rest initially and finally. The piston–cylinder material is a ceramic composite and thus a good insulator. Friction between the piston and cylinder wall can be ignored, and the local acceleration of gravity is g = 32.0 ft/s2 Determine the heat transfer from the resistor to the air, in Btu, for a system consisting of (a) the air alone, (b) the air and the piston. Also draw the schematic diagram. Hint: Refer to example