The ends of a cylindrical steel rod are maintained at two different temperatures. the rod conducts heat from one end to the other at a rate of 10 cal/s. at what rate would a steel rod twice as long and twice the diameter conduct heat between the same two temperatures?

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

What properties of a moving object are used in determining the object's energy of motion