Play a gentle tug-of-war in which you pull the ends of the two force sensors back and forth for about 10 seconds with your partner using properly calibrated force sensors. This requires a hook on each force sensor. (The sensors need not be mounted on the carts to do this.) What do you observe about the mutual forces

How can you increase the strength of an electromagnet?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?

Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight