已知甲乙丙皆為正立方體的金屬塊不與水反應其邊長為1 cm 2 cm 3 cm密度分別為2 g/cm3 3 g/cm3 4G/cm3放入一個水桶裝在江水注滿將3塊金屬完全淹沒折尺3塊金屬手作 的福利總和為多少gw 54
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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

With i really need the correct answer!

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?