Sandy manages a ceramics shop and used a 600F kiln to fire ceramic greenware. After turning off her kiln, she must wait until its temperature gauge reaches 210F before opening it and removing the ceramic pieces. If room temperature is 70F and the gauge reads 550F in 9 minutes, how long must she wait before opening the kiln?
Use Newton's Law of Cooling: U=T+(Uo-T)e^kt

Question

Sandy manages a ceramics shop and used a 600F kiln to fire ceramic greenware. After turning off her kiln, she must wait until its temperature gauge reaches 210F before opening it and removing the ceramic pieces. If room temperature is 70F and the gauge reads 550F in 9 minutes, how long must she wait before opening the kiln?
Use Newton's Law of Cooling: U=T+(Uo-T)e^kt

anonymous · Answer

in a psychology class , the students were tested at the end of the course on a final exam. then they were tested with an equivalent test as subsequent time interval. their average scores after 1 month are given in the table