How far will 490 j raise a block weighing 7 n?

To find how far 490 joules of energy will raise a block weighing 7 newtons, you can use the formula for gravitational potential energy: ( \text{Potential Energy} = \text{Weight} \times \text{Height} ). Rearranging this gives ( \text{Height} = \frac{\text{Potential Energy}}{\text{Weight}} ). Substituting the values, ( \text{Height} = \frac{490 , \text{J}}{7 , \text{N}} = 70 , \text{m} ). Therefore, 490 joules will raise the block 70 meters.