The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all of the energy obtained from burning 1.21 lb of ethane (fuel value is 11.36 kcal / g ) is used to heat 121.5 kg of water at an initial temperature of 20.0 ∘ C, what is the final temperature?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.