Question

At noonin a clear day in midsummer , a cylindrical titanium plate is placedin the sun. The plate is painted flat black so that it will absorb most of the energy from the sunlight rather tham reflecting it. The plate is 5cm in diameter , one cm thick, has a specific gravity of 4.5, a molecular weight of 47.9 grams per mole and has a specific heat capicity of 25joules per mole kelvin. If the temperature of the plate increased by 17 degrees Fahrenheit , how much energy in units of calories did it absorb from the sun, assuming no heat is reradiated to the surroundings?

Answer 1