Quick I'll Mark it Brainliest Which of the following statements is true? A. Burning air and gasoline in an engine changes chemical energy into mechanical energy. B. Friction causes molecules to vibrate more slowly. C. It is impossible to change mechanical energy into mechanical energy. D. Most heat energy is easily recovered and used for useful actions.

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

The energy released by a nuclear fusion reaction is produced when