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Q1. A large uninsulated home might require 1.30 million BTu of heat energy from the furnace on a cold winter day. What is the cost in dollars to heat this house for that day with natural gas, assume 90 percent efficiency?

Q2. A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance. It takes time 0.420s to pass this window, which is of height 1.92 m. How far is the top of the window below the windowsill from which the flowerpot fell?

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Category:- Physics
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