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Q1. A house is heated by a 24.0 kW electric furnace which uses resistance heating. The rate for electrical energy is $0.120/kWh. If the heating bill for January is $200, how long must the furnace have been running on an average January day?

Q2. A pilot flies an airplane at a constant speed of 520 km/hr in the vertical circle of radius 1400 m. compute the force exerted by the seat on the 105-kg pilot at point A and at point B.

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