A model roller coaster car weighing 300 Kg is accelerated with a constant force F between points A and B over a period of 1.5 seconds. When the car gets to point C, the normal force exerted by the track on the car is in the downward direction and equal in magnitude to the weight of the car. (i) Determine the magnitude of F. (ii) determine the maximum height reached by the car on the upward slope. The radius of curvature of the loop is 10 m. Neglect friction losses.

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.