5.For the following questions, use a periodic table and your atomic calculations to find the unknown information about each isot
1 answer:
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A. <span>Standing is health-enhancing because it uses energy.
Because standing can burn a lot of calories.</span>
Because standing can burn a lot of calories.</span>
Answer: 4
The mechanical advantage is the ratio of the force exerted by the object to the force applied to do work on it.
Here, Jeff tried to lift a rock weighing 600 pounds by wedging board under the rock. Jeff who weighs 150 pounds uses all his weight to exert force on lever and lift rock.
Mechanical advantage,
Therefore, the mechanical advantage that lever provided to Jeff in lifting rock is 4.