A special airport truck is used to push a heavy airliner away from the terminal. The truck pushes with a force of 4250 N for a distance of 210 m. Calculate the mechanical work done by the truck.

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

When an object is heated it contracts. a. true b. false

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit: