A 22.4 g silver ring (cp = 234 J/kg·°C) is heated to a temperature of 77.4°C and then placed in a calorimeter containing 4.08 ✕ 10-2 kg of water at 24.0°C. The calorimeter is not perfectly insulated, however, and 0.132 J of energy is transferred to the surroundings before a final temperature is reached. What is the final temperature?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.

Ionic compounds can be readily dissolved in water because the high dielectric constant of water screens and decreases the force between the oppositely charged ions.