Find the x- and y-components of the following vectors a = (8.0m/s^2, negative y-direction)

Express your answers using two significant figures. Enter your answers numerically separated by a comma.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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.

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.