Which of the following system is more stable? E_el alpha (Q_1 times Q_2)/d A) Wh

Question

Which of the following system is more stable? E_el alpha (Q_1 times Q_2)/d A) When Q1 and Q2 are both negative B) When Q1 and Q2 are both positive C) When Q1 is negative and Q2 is positive D) When Q1 is positive and Q2 is negative Both C and D Who does more work - a man who lifts a large box from the ground up into the back of a truck, or a man who puts the same box on a trolley and wheels it up a ramp into the truck? A) The man who lifts it B) The man who trolley it C) Both A and B D) No work is done

Explanation / Answer

13 )

option E is correct

C and D both are correct

because E = k Q1 Q2 / d2

so one is negative and other positive

and

one is positive and other negative

both gives same field

14 )

option A is corect

because the mann who lifts a large box and from ground

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