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Answer:
0 J
Explanation:
As work is force times displacement, if no displacement occurs, no work occurs.
Answer:
the rock hit the board you go flying because you board stops but you have energy still going so there for you go flying
Explanation:
earth still is not solid ... core is molten ... volcanoes, sea is liquid
at v v v beginning was gas ????
Answer:
The tension on each rope is 28.28 lb
Explanation:
Given that,
Weight = 40 lb
Angle = 45°
We need to calculate the tension on each rope
Considering the symmetry of the system, the tension of each rope must be same
So,

Put the value into the formula




Hence, The tension on each rope is 28.28 lb.