In the following three arrangements each resistor has the same resistance r. rank the equivalent resistances of the arrangements in descending order (largest first) 15. the peak value of the ac current in a circuit is 6.0 a, and peak value of the ac voltage applied to the circuit is 4.1 v. what is the average power delivered to the circuit? 16. the temperature coefficient of resistivity or a material is 0.0035 (c^o)^-1. by how much at does the temperature of a wire made from this material have to change, in order that the resistance of the wire doubles?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i. e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i. e. include the distance traveled to the first encounter)

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?