Question

A COPPER BLOCK ,MASS 500g AND AT 200 DEGREES CELCIUS GIVES OUT ENERGY AT AN AVERAGE RATE OF 50W.
(i)what is temperature after 5 min ?
(ii)how long will it take before its temperature drops to 50 degrees celcius
bobpursley
POwer= heat/time= mass*specificheat*(tf-ti)/time where time is in seconds.
i) change time to seconds, solve for tf.

ii) solve for time.

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