A 90kg person pushes a 25kg cart 15m up a ramp using a force of 80N. The top of the ramp is 3m above ground. It takes 8 seconds to go from bottom to top.

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

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?