•A steel tape measure is calibrated at 70 o F. A reading of 120 ft is obtained when it is
used to determine the width of building at 0 o F. What is the true width of the building
at 0 o F?’
•A 300 g aluminum pot containing 0.50 L of water is placed on the 1 kg iron hot plate
on an electric stove. The heating element of the hot plate is rated at 1.5 kW. If the hot
plate, the pot, and the water are all at 20 o C when the heating element is switched on,
how long will it take until the water begins to boil? Neglect heat losses to the
surroundings.
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