Solve the following question given below:
Question: The number of kilocalories in food is determined by calorimetric techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 3.99-gram macadamia nut if the energy from burning it is transferred to 0.460 kg of water held in a .094 kg aluminum cup, causing a 58.9 degree Celsius temperature increase?
1- If a serving of macadamia nut consists of 18 g, how many kcal is consumed per serving?
I want you to explain the physics in this question.