A man pushes with a force of 150 N on a bookcase with a weight of 100kg. The coefficient of static friction between the bookcase and the floor is 0.65. Because of friction, the bookcase does not move. What is the force of friction on the bookcase?

Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results

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

What are the similarities & differences between a thermistor and a light dependent resistor in physics?