The force shown in figure 7-15 moves an object from x=0 to x=0.75 m. how much work is done by the force?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?