Contrast physical changes with chemical changes

What ia the law of convesation of energy

The figure shows two vectors, u and v. Which law of vector addition should be used to find the resultant of these two vectors? A) Triangle law of vector addition, expressed symbolically as w u +v.

Imagine the door to a theatre is opened and you are standing outside. How is it possible that you can hear the sound of the movie or play even if you cannot see the screen or stage?

Three identical metal spheres are on insulating stands. Sphere A is given an initial charge of q. Sphere A is then briefly touched to Sphere B. Afterward, Sphere B is then briefly touched to Sphere C.

Two books with different masses fall off the same bookshelf. As they fall, which has more kinetic energy and why

Which of the following statements about Boyle's law are correct? The temperature and pressure must remain constant for the law to apply. The temperature and the number of molecules must remain constant for the law to apply.

Exposure to high energy electromagnetic radiation such as waves can cause cancer sterility and death

What kind of error would result if you read the liquid volume where the liquid touches the wall of the cylinder rather than at the meniscus

A long, thin rod parallel to the y-axis is located at x=-1.0 cm and carries a uniform linear charge density of + 1.0 nc/m. a second long, thin rod parallel to the z-axis is located at x=+1.0 cm and carries a uniform linear charge density of - 1.

A meter is measured in?