Which of the following is located in the stratosphere? (10 points) weather, the ozone layer, uv rays, birds.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction