Three people are pulling on a crate , but the crate isn’t moving (it’s at rest ) :Robert and Rachel are pulling to the Right , while Larry is pulling to the Left. If Robert is pulling with force of 74 N, and Larry is pulling with a force of 106 N , how much is Rachel’s force ?

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 items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element

How is the ideal mechanical advantage of a wheel and axle calculated?