A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the thermometer reading is 12°C. Which function representing the thermometer reading, T, at any given time t (in minutes) is correct? a. dT/dt = k(T - 22) b. dT/dt = -k(T - 22) c. dt/dT = k(T - 22) d. dt/dT = -k(T - 22) Which of the following gives the temperature decay constant k? a. -0.531 b. 17 C. 0.531 d. -17 How long, in minutes, does it take until the reading is about 21.9°C? a. 10.3 b. 9.67 C. 9.31 d. 8.43

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A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the
thermometer reading is 12°C.
Which function representing the thermometer reading, T, at any given timet (in minutes) is
correct?
a. dT/dt = k(T - 22)
b. aT/dt = -k(T - 22)
c. dt/dT = k(T - 22)
d. dt/dT = -k(T - 22)
%3D
Which of the following gives the temperature decay constant k?
a. -0.531
b. 17
C. 0.531
d. -17
How long, in minutes, does it take until the reading is about 21.9°C?
a. 10.3
b. 9.67
c. 9.31
d. 8.43
Transcribed Image Text:A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the thermometer reading is 12°C. Which function representing the thermometer reading, T, at any given timet (in minutes) is correct? a. dT/dt = k(T - 22) b. aT/dt = -k(T - 22) c. dt/dT = k(T - 22) d. dt/dT = -k(T - 22) %3D Which of the following gives the temperature decay constant k? a. -0.531 b. 17 C. 0.531 d. -17 How long, in minutes, does it take until the reading is about 21.9°C? a. 10.3 b. 9.67 c. 9.31 d. 8.43
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