Movers use a ramp to move a refrigerator from the sidewalk to a moving van. The weight of the fridge is 700 Newtons. What additional information is needed to calculate the work done while moving the fridge?

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Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different