The stress-strain curve for a brass alloy is provided below. The inset is a magnified view of the elastic regime of this stress-strain response. What is the approximate elastic modulus of this brass, in units of psi.

Asample of the male sex hormone testosterone, c19h28o2, contains 3.88×10^21 atoms of hydrogen.(a) how many atoms of carbon does it contain? (b) how many molecules of testosterone does it contain? (c) how many moles of testosterone does it contain? (d) what is the mass of this sample in grams?

How does the motion of particles in a gas change as the gas cools

Maya wrote if you step to describe how carbon circulates between the atmosphere and living organisms