A proton is released from rest in a uniform electric field that has a magnitude of 8.0 x 104 V/m. The proton undergoes a displacement of 0.50 m in the direction of E Find the change in electric potential, the voltage, between point A and B. Find the change in potential energy of the proton-field system for this displacement. Hint: U

Most energy in an ecosystem comes originally from_

After the near spacecraft passed mathilde, on several occasions rocket propellant was expelled to adjust the spacecraft's momentum in order to follow a path that would approach the asteroid eros, the final destination for the mission. after getting close to eros, further small adjustments made the momentum just right to give a circular orbit of radius 45 km (45 × 10^3 m) around the asteroid. so much propellant had been used that the final mass of the spacecraft while in circular orbit around eros was only 545 kg. the spacecraft took 1.04 days to make one complete circular orbit around eros. calculate what the mass of eros must be.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy