A cup of tea cools from 65.5^@C" to " 62.5^@C in 1minute in a room at 22.5^@CHow long will it take to cool from 46.5^@C " to " 40.5^@CC in the same

A cup of tea cools from 65.5^@C" to " 62.5^@C in 1minute in a room at

1.	A cup of tea cools from 65.5^@C" to " 62.5^@C in 1minute in a room at 22.5^@CHow long will it take to cool from 46.5^@C " to " 40.5^@CC in the same
Answer» 4 minutes 2 minutes 1 minutes 3 minutes Solution :`(DT)/(dt)=k(theta-theta_(o))` (I) `3/1=k(64-22.5)` `3/1=k(41.5)""...(1)` (II) `6/t=k(43.5-22.5)` `6/t=k(21)" "...(2)` `((1))/((2))rArr3/1xxt/6=41.5/21` t = 4 MIN

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A cup of tea cools from 65.5^@C" to " 62.5^@C in 1minute in a room at 22.5^@CHow long will it take to cool from 46.5^@C " to " 40.5^@CC in the same

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