The force of gravity on a block of cheese in an elevator at rest is -20 N. If the elevator then begins accelerating down at a rate of -3 m/s^2, what is the normal force of the elevator on the
cheese?

A) 0 N
B) 14N
C) 20 N
D) 26 N

If the area of a square has increased by a factor of 16, by how much has each side increased?

1. when conducting a test on what kind of music increases the growth of plants, all of the following would fail to meet to fair test standard except (1 point) using different kinds of plants. giving some plants more water than others. exposing the plants to different types of music. using nutrient-rich soil for one and lesser soil for others. 2. engineering uses scientific thinking to solve real-world problems. (1 point) true false 3. what does it mean to test a hypothesis? (1 point) pass a quiz on other scientists’ results analyze only the results from scientific sources not make assumptions about how an experiment will turn out see if the results of an experiment are what the scientist predicted

How much work would it take to move a coulomb charge across a 4 volt potential difference?