talk about how people need more magnification and what that does to the amount the light is bent with glasses CAN SOMEONE HELP ME PLEASES

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

The ph is the a. independent variable b. the dependent variable c. control group