The temperature of a hot metallic rod is 278°c .lf it is made to cool off at the rate of 7°C every minute,then what will be it's temperature after 20 minutes.
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140°c
Step-by-step explanation:
The temperature of a hot metallic rod=278°c
it is made to cool off at the rate of =7°c
it's temperature after 20 min = 7°c * 20
= 140°c (ans)
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