Question 15 The rate at which an object's temperature changes is proportional to the difference in temperature between the object and the ambient temperature. A cake is removed from an oven at 90°C and left to cool at room temperature, which is is 30°C. After 30 minutes the cake is 60°C. When will it be 40°C? (A) 77.5 minutes (B) 45 minutes (C) 66.7 minutes (D) 40 minutes (E) None of the above
Question 15 The rate at which an object's temperature changes is proportional to the difference in temperature between the object and the ambient temperature. A cake is removed from an oven at 90°C and left to cool at room temperature, which is is 30°C. After 30 minutes the cake is 60°C. When will it be 40°C? (A) 77.5 minutes (B) 45 minutes (C) 66.7 minutes (D) 40 minutes (E) None of the above
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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![Question 15
The rate at which an object's temperature changes is proportional to the difference in temperature
between the object and the ambient temperature. A cake is removed from an oven at 90°C and
left to cool at room temperature, which is is 30°C. After 30 minutes the cake is 60°C. When will it
be 40°C?
(A) 77.5 minutes
(B) 45 minutes
(C) 66.7 minutes
(D) 40 minutes
(E) None of the above](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8f2c8b3-65a0-4fa3-8adc-aab3bdfa8f5e%2F71bd19bf-7d48-465e-841a-7a3a93e9dc5c%2Fbh2ppv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 15
The rate at which an object's temperature changes is proportional to the difference in temperature
between the object and the ambient temperature. A cake is removed from an oven at 90°C and
left to cool at room temperature, which is is 30°C. After 30 minutes the cake is 60°C. When will it
be 40°C?
(A) 77.5 minutes
(B) 45 minutes
(C) 66.7 minutes
(D) 40 minutes
(E) None of the above
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