I am just saying Hi to some frinds MOrning guys! Pls dont report i was just saying hi nithing wrong Thx!

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.