A5.0-kg block of wood is placed on a 2.0-kg aluminum frying pan. how much heat is required to raise the temperature of both the wood and the pan from 20°c to 45°c? (note: the specific heat wood is 1700 j/kg ·°c and of aluminum is 900 j/kg ·°c.)

Heat required to raise the temperature of a given system is

here we know that

m = mass

s = specific heat capacity

= change in temperature

now as we know that

mass of wood = 5 kg

mass of aluminium pan = 2 kg

change in temperature = 45 - 20 = 25 degree C

specific heat capacity of wood = 1700 J/kg C

specific heat capacity of aluminium = 900 J/kg C

now here we will find the total heat to raise the temperature of both

So heat required to raise the temperature of the system is 257500 J

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

where's the following? you gotta add it to know what the choices are

explanation: