Two piano movers are bringing a piano into a home. One mover pushes to the right with a force of 310 N, while the other pulls to the right as well, but with a force of 270 N. The force of friction acts to the left, with a magnitude of 190 N. The piano weighs 2500 N. What is the net force on the piano?

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Sound is a disturbance that travels through a medium as a

Observations show that interstellar clouds can have almost any shape and