Two flashlights are directed at a wall from different distances. The flashlights have the same strength of bulbs and of batteries. When the flashlights are turned on, which is expected to appear
brighter on the wall? How does this analogy relate to stars?

the answer would be 3

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.