A proton moving perpendicular to a magnetic field of strength 3.7 mT experiences a force due to the field of 5.8 ✕ 10-21 N. (a) Calculate the speed of the proton. (b) Calculate the kinetic energy of the proton.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.