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An air spaced parallel plate capacitor has an initial charge of 0.05 uC after being connected to a 10 V battery.
(A) What is the total energy stored between the plates of the capacitor?
(B) If the battery is disconnected and the plate separation is tripled to 0.3 mm, what is the electric field before and after the plate separation change?
(C) What is the final voltage across the plates and the final energy stored?
(D) Calculate the work done in pulling the plates apart. Does this fully account for the energy change in part (B)?
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The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
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Light of wavelength 587.5 nm illuminates a slit of width 0.75 mm. Calculate the width of the central maximum
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The position of a rocket sled on a straight track is given as x = a t3 + b t2 + c, What is the sled's average speed between t = 3.48 s and t = 6.92 s
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