Write a hypothesis about the effect of the angle of the track on the acceleration of the cart. use the "if . . then . . because . ." format and be sure to answer the lesson question: "how does an object's position and velocity change as the object accelerates? "

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

You can decrease the resistance of a length of wire by

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow