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Solve the all parts of given problem:
Problem: Two 10-cm-diameter charged rings face each other, 28cm apart. The left ring is charged to -20nC and the right ring is charged to +20nC.
Part A: What is the magnitude of the electric field E? at the midpoint between the two rings?
Part B: What is the direction of the electric field E? at the midpoint between the two rings?
Part C: What is the magnitude of the force F? on a -1.0 nC charge placed at the midpoint?
Please show me how work it out for above problem.
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A 150g copper bowl contains 220g of water, both at 20 degrees Celsius. A very hot 300g copper cylinder is dropped into the water, causing the water to heat, by 5g being converted to steam. The final temperature of the system is 100 degrees Celsius.
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