What process is used to make food safer for consumption by killing bacteria within the food ? A. freezing B. fermentation C. antibiotic treatment D. pasteurization

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false