Isaac tosses a twig into a river to figure out how quickly the water is flowing. He observes that the twig travels 21 meters south in three seconds. Based on his observations, what is the velocity of the twig?

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