Problem 10: You read in a popular diet blog that the author claims you can lose up to half a pound of body fat per week if, instead of drinking 2.4 (i.e., 2.4 kilograms) of water every day, you can eat the same amount of water in the form of ice. The reasoning is that your body must first melt the ice en bring the ice water up to the body temperature of 37°C, which is a process that requires a significant amount of energy at the expense of "burned" fat. Thankfully, you just finished discussing heat and phase changes in your physics class, so you can calculate exactly how much energy is expended. pecific heat and latent heat of fusion for water are 4.186 x 10³ J/(kg-°C) and 3.34×105 J/kg, respectively.

Problem 10: You read in a popular diet blog that the author claims you can lose up to half a pound of body fat per week if, instead of drinking 2.4 (i.e., 2.4 kilograms) of water every day, you can eat the same amount of water in the form of ice. The reasoning is that your body must first melt the ice en bring the ice water up to the body temperature of 37°C, which is a process that requires a significant amount of energy at the expense of "burned" fat. Thankfully, you just finished discussing heat and phase changes in your physics class, so you can calculate exactly how much energy is expended. pecific heat and latent heat of fusion for water are 4.186 x 10³ J/(kg-°C) and 3.34×105 J/kg, respectively.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Energy transfer

The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.

Molar Specific Heat

Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)

Thermal Properties of Matter

Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.

Question

(5%) Problem 10: You read in a popular diet blog that the author claims you can lose up to half a pound of body fat per week if, instead of drinking 2.4
liters (i.e., 2.4 kilograms) of water every day, you can eat the same amount of water in the form of ice. The reasoning is that your body must first melt the ice
and then bring the ice water up to the body temperature of 37°C, which is a process that requires a significant amount of energy at the expense of "burned"
body fat. Thankfully, you just finished discussing heat and phase changes in your physics class, so you can calculate exactly how much energy is expended.
The specific heat and latent heat of fusion for water are 4.186 × 10³ J/(kg·°C) and 3.34×105 J/kg, respectively.
50% Part (a) How many kilocalories do you expend when you eat 2.4 kg of ice at 0°C? Note that 1 kcal = 4186 J.
Q=7174 * Attempts Remain
50% Part (b) Assuming the metabolism of one pound of body fat produces 3500 kcal of energy, how many pounds of body fat could you lose in a week
just by eating 2.4 kilograms of ice every day?

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