a piece of aluminium of mass 1kg is heated to 100celsius and then placed in 0.4kg of water at 20celius if the mixture reaches a temperature of 60celsius what is the specific heat capacity of the aluminium if that of water is 4200j/kg

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Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.