What happens when you close a light switch in a parallel circuit?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

What is a carrier wave and how does it affect what you hear on the radio

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.