một tụ điện đuoc nap den nang luong dự trữ bằng 4J. SAu đó một tụ thứ hai không tích điện nói song song với nó. nếu điẹn tich phân bố bằng nhau thì năng lượng dự trữ trong điện truong là bao nhieu

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

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

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final