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Grade: 12
        
A body cools from 70 -60 in 10 minutes 60-56 in 10 minutes. What is the temperature of body in next 10 minutes?
2 years ago

Answers : (1)

jitender
114 Points
							This ques comes from Physics thermodynamics. Applying Newton law of coolingRate of cooling = ◇T/◇t = k (T-T°)◇= changeT= temp average t= time T°= surrounding Temp 70-60 / 10 = K  ( 68- T° )    : T=70+60/2=65K=1/68-T°                   1st60-56 /10 = K (58-T°)   K=2/5(58-T°)            2ndDivide 1st with  2ndT°= 51.33Now 56-Tt / 10 = 2/5(6.67) [(56+Tt)/2 -51.33]Tt=53.85
						
2 years ago
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