If a walking stick with a mass of 300 g can be balanced by placing a mass M of 150 g at a distance L of 20 cm from the fulcrum, then the center of gravity of the stick is cm away from the fulcrum.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Most short-period comets do not have randomly oriented orbits because