You observe is equal to f 2.0 x 10-15 erg cm2 s1 a at all wavelengths is the frequency (in hz) corresponding to wavelength 4000 a, and wavelength 8000 a? what is the flux density f of this object at each of those two frequencies, in units of erg em an s-1 hz17 -2

The speed of light can be used to measure the

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in