A1200-kg car pushes a 2100-kg truck that has a dead battery to the right. when the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 n.

what is the magnitude fct of the force that the car exerts on the truck? use the coordinate system shown in parts c and d, where the positive y direction is upward, and the positive x direction is to the right, the direction in which f⃗ ct points. express your answer in newtons to two significant figures.

If we relied solely on the nonrenewable resources found in the u.s., which one would we run out of first at current usage levels? a. natural gas b. oil c. uranium d. coal

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=