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Q. A certain telescope has an objective of focal length 1580cm. If the Moon is used as an object, a 1.4 cm long image formed by objective corresponds to what distance, in miles, on the Moon? Suppose 3.8 multiplied by 108 m for the Earth-Moon distance.

Q. A container of nitrogen gas (N2) at 23°C contains 409 L at a pressure of 3.27 atm. If 26.10 kJ of heat are added to the container, what will be the new temperature of the gas? Do not enter unit (°C).

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