1. A body at a temperature of 50°F is placed outdoors where the temperature is 100°F. If after 5 minutes the temperature of the body is 60°F, find (a) how long it will take the body temperature to reach a temperature of 75°F and (b) the temperature of the body after 20 minutes.

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1. A body at a temperature of 50°F is placed outdoors where the temperature is 100°F.
If after 5 minutes the temperature of the body is 60°F, find (a) how long it will take the
body temperature to reach a temperature of 75°F and (b) the temperature of the
body after 20 minutes.
2. A body at an unknown temperature is placed in a room which is held at a constant
temperature of 30°F. If after 10 minutes the temperature of the body is 0°F and 20
minutes the temperature is 15°F, find the unknown initial temperature.
Transcribed Image Text:1. A body at a temperature of 50°F is placed outdoors where the temperature is 100°F. If after 5 minutes the temperature of the body is 60°F, find (a) how long it will take the body temperature to reach a temperature of 75°F and (b) the temperature of the body after 20 minutes. 2. A body at an unknown temperature is placed in a room which is held at a constant temperature of 30°F. If after 10 minutes the temperature of the body is 0°F and 20 minutes the temperature is 15°F, find the unknown initial temperature.
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