Question

The temperature of a body falls from 62degree celcius to 50 degree celcius in 10 minutes.if the temperature of the surrounding is 26degree celcius the temperature in next 10 minutes is ............ A 42degree Celsius B 40degree celcius

Answer 1

Answer:

40 degree celsius

Explanation:

this is based on newton's laws of cooling

Answer 2

ANSWER:

42° C

EXPLANATION:

dФ/ dt = -k (Фinitial - Фsurrounding)

- ( 62- 50)/ 10 = -k (62 - 26)

-12/10 = - k * 36

k= 1/30

(T - Final temp.)/ time = - k (Final temp. -Surrounding temp.)

T -50 / 10= -1/30 * (50-26)

T = 42° C