Answer:
Yes
Explanation:
There was a force, 500 lb.
and a motion in the direction of the force, in this case a negative direction.
Therefore the lifter did negative work on the mass of the barbell against gravity.
Gravity would do positive work against the mass of weight when the lifter lowers the barbell as the force vector and the motion vector are in the same direction.
Answer: 0.2 u
Explanation:
The atomic mass of nuclide is written as a superscript. On the left (reactants) aide of the nuclear equation shown, the total atomic mass is 235.0 + 1.0 u = 236 u. On the right (products) side reaction, the total atomic mass is 137.9u + 94.9u + 3 x 1.0u = 235.8 u. Therefore, 0.2 mass units must have been converted into energy.
Answer: you've been trolled
Explanation:
You need to put more info into the question
Answer:a
Explanation:I just took the quiz and got it right lol
