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Q. A 3.4 k and a 2.4 k resistor are connected in parallel; this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W (maximum without overheating), what is the maximum voltage that can be applied across the whole network?

Q. Determine the escape speed from (a) Jupiter's moon Callisto, with mass and radius 2.40 , and (b) a neutron star, with the Sun's mass crammed into a sphere with radius 5.50.

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