when an object is placed in front of convex lens it creates a virtual image at -12.8 cm with a magnification of 2.85. what is the focal length of the lens

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost