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    noclue445's Avatar
    noclue445 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 29, 2007, 06:24 PM
    Worded Questions
    Hi there, I'm new to this.
    Could someone please point me in the right direction in answering this worded question?

    A newly formed metal ingot cools from a temperature of 800 degrees Celsius one minute after being poured to a temperature of 600 degrees Celsius five minutes after being poured. The temperature, T degrees Celsius, of the metal at time (t) minutes after the ingot was formed is given by

    T=k 10^(-at) (k and a are constants)

    a) Find the temperature of the metal at the moment the ingot was poured.
    b) Find the value of a (correct to 5 decimals places)

    Any help would be appreciated, thanks
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
    Ultra Member
    		  
    #2

    Sep 30, 2007, 06:31 AM
    It appears you have two equations to solve for a and k.





    Solve for a and k.
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