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

Identify the type of synthetic material used in each object

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.