Which of the following is true about scientific models? A. models are used to simplify the study of things
B. computer models are the most reliable kind of model
C. models explain past, present and future information
D. a model is accurate if it does not change over time

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Does heating a metal wire increase or decrease its electrical resistance? why?