Discover Questions

How to do b) and c)? What is limit for how many hours medical residents can work in a week now? If the ph of a solution increases from 3.1 to 5.1 the hydronium ion concentration will increase or decrease by a factor of what? For the curve given by
r(t)=⟨sin(t)−tcos(t),cos(t)+tsin(t),1t^2+5⟩
a. Find T(t)~the Unit tangent
b. N(t)~the unit normal
c. k(t)~curvature? Mix of He Ne & Ar has pressure of 14.9atm at 28.0°C. the partial pressure of He=3.73atm Ar=2.41 atm, what s the partial pressure of Ne?