False! The ability to cause change is energy, not matter. <span />
Explanation:
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Answer:
Explanation:
Since the hoop is rolling on the floor so its total kinetic energy is given as
now for pure rolling condition we will have
also we have
now we will have
now by work energy theorem we can say
now solve for final speed
They sometimes reduce the voltage to prevent a potential blackout caused by the system being overworked, this saves them money that they would have to spend to make repairs