If the cart on a roller coaster has 30 Joules of potential energy and 35 Joules of kinetic energy, what is its total mechanical energy?

How would doubling the made of an object change the objects potential energy

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.