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Q. A box of mass 38 kg is at rest on a horizontal frictionless surface. A constant horizontal force then acts on the box, and accelerates it to the right. It is observed that it takes the box 6.6 seconds to travel 68 meters. What is the magnitude of the force.

Q. A parallel-plate capacitor is formed from two 1.0 {rm cm} times 1.0 {rm cm} electrodes spaced 2.4 {rm mm} apart. The electric field strength inside the capacitor is 1.0times10^{6};{rm{N/C}}.

What is the charge (in {rm nC}) on positive electrode?

What is the charge (in {rm nC}) on negative electrode?

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