PHYS 212 Lecture 22: 22.0

An LR circuit having , , and is switched on at t=0. The power dissipated in Joule heating at t=4s is approximately equal to __

An LR circuit with a battery is connected at t=0. Which of the following quantities is not zero just after the connection?

Thelength and radius of the needle are L and R,respectively, both of which have the dimension [L]. Thepressures at opposite ends of the needle are P₂and P₁, both of which have the dimensions of[M]/{[L][T]²}. The symbolη represents theviscosity of the liquid and has the dimensions of[M]/{[L][T]}. The symbol π stands for pi and, likethe number 8 and the exponent n, has no dimensions. Usingdimensional analysis, determine the value of n in theexpression for Q.