Acompound machine is sued to lift a car. if you apply a force of 60 n to the machine, it lifts the car with a force of 550 n.

a. what is the mechanical advantage of the machine?

b. the machine has an efficiency of 35%. if you perform 1150 j of work, how much useful work does the machine do?

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