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Question 1- A steel rod is 3.402 cm in diameter at 23.00°C. A brass ring has an interior diameter of 3.399 cm at 23.00°C. At what common temperature will the ring just slide onto the rod? The linear expansion coefficient of steel is 11.00 × 10^-6 1/C°. The linear expansion coefficient of brass is 19.00 × 10^-6 1/C°.

Question 2- A small electric immersion heater is used to heat 67 g of water for a cup of instant coffee. The heater is labeled "140 watts" (it converts electrical energy to thermal energy at this rate). Calculate the time required to bring all this water from 21°C to 100°C, ignoring any heat losses. (The specific heat of water is 4186 J/kg·K.)

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