how many years would be required if the chunks of granite had a mass of 1 millio

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what is the initial temp of granite sample (to) ================ let us say > it takes (n) years to heat the sample (m kg) to melting point (T) heat provided by radioactivity = q(r) = 0.1[ca/kg*year][n year][ m kg] q(r) = 0.1 *n*m [cal] --------------------------------------… when insulated from surroundings, q(r) will be fully utilised in raising its temp to (T)>> no loss to surroundings q(t) = q(r) m * c * [T - to] = 0.1 *n*m n = 10 * 200 [700 - to] -------- (1) without (to) you can not find (n) ------------------------------- (1) is independent of mass, so n will be same for (1 m kg) sample as well >>> to > initial temp of sample is needed

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