Question

#1). A thermometer is taken from an inside room to outside of the building where the air temperature is 5' F. After 1 minute, the thermometer reads 55° F and after 5 minutes, the thermometer reads 30°F. What was the initial temperature of the room?

#2). A thermometer is removed from a room where the air temperature is 70°F to outside the building where the temperature is 10° F. After minute, the thermometer reads 50°F. What is the reading at t = 1 minute? How long will it take the thermometer to reach 15°F?

#3). A cup of boiling water is placed outside at 1:00 pm. One minute later, the temperature of the water is 152° F. After another minute, the water's temperature is 112° F. What is the outside temperature?

Answer 1

i