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Q1. Two large parallel metal plates are 1.7 cm apart and have charges of equal magnitude but opposite signs on their facing surfaces. Take the potential of negative plate to be zero. If the potential halfway between the plates is then +7.4 V, what is the electric field in (V/m) in the region between the plates?

Q2. Consider a standing wave on the string with a frequency equal to the fifth harmonic (fn = nf1 with n = 5). How many nodes and antinodes does this standing wave possess?

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