Liza is pulling a wagon across the floor in a straight line at a constant speed of 3 m/s. If Liza is pulling with 20 N applied force on the box, what is the direction and magnitude of the frictional force on the wagon?

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

In an experiment, how can i change human errors? be specific.

Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly