Which simple machines rely on changes in direction to make work easier?

The thrust from a car is 2000 N. The air resistance and friction together equal 608 N. What happens to the speed of the car?

The output power of a solar panel is the rate of transfer of ... ? A) Current B) Electrons C) Energy D) Voltage

Your bedroom has a rectangular shape and you want to measure its size. You use a tape that is precise to 0.001 m and find that the shortest wall in the room is 3.547 m long.

A quarterback pedals 3.3meters southward and then run 5.7meters northward. Whats the distance? And whats the displacement?

The ball has a mass of 7.5 kg and the man throws it at a speed of 5.2 m/s. What is the momentum of the ball?

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth

A 50,000 kg locomotive is traveling at 10 m/s when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop? Assume the track is level.

A rectangular loop of wire with sides 0.262 and 0.401 m lies in a plane perpendicular to a constant magnetic field (see part a of the drawing). The magnetic field has a magnitude of 0.

In the system you're inspecting the damper motor isn't working, You decide to see if the damper-postion sensor us sending the proper signal to the which then signals the damper motor. A. heating coil B. duckwork c. energy source D. controller