Obtain the change in the internal energy of weight lifter

Reference no: EM13306492

In exercising, a weight lifter loses 0.152 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.74 x 105 J.

(a) Assuming that the latent heat of vaporization of perspiration is 2.42 x 106 J/kg, find the change in the internal energy of the weight lifter.

(b) Determine the minimum number of nutritional Calories of food that must be consumed to replace the loss of internal energy. (1 nutritional Calorie = 4186 J).

Reference no: EM13306492

Questions Cloud

Determine how far apart must two diameter tanks be placed : How far apart must two 18 , diameter tanks be placed such that their stress overlap is not greaer than 10% of the contact stress at depths of 10, 20, and 30 m

Determine how much energy does it deliver into a home : A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 6.88 x 103 W. How much energy does it deliver into a home during 2 h of continuous operation

Find the probability christian wont pick out a grey tie : Christian is picking out ties for a business trip. Anastasia knows from experience that Christian has a 50% chance of picking a grey tie. Find the probability Christian won't pick out a grey tie until the 3rd or 4th tie.

How is the minimum radius affected if the b decreases : Roller coasters are designed so that the riders will not experience more than a certain level of g-force during the ride. (The rider would experience B g's if hte normal force were Bmg where B is a numbe

Obtain the change in the internal energy of weight lifter : In exercising, a weight lifter loses 0.152 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. find the change in the internal energy of the weight lifter

Write a program to support children spelling game hangman : The traditional way to play hangman is to draw a figure on a gallows. Another part of the hanged man is added for each incorrect guess.

Calculate the heat and work excahnged during the process : a piston-and-cylinder device contains 5 kg of water initially at 150 C and 0.20 MPa. The frictionless piston is then pushed slowly in an isothermal process until the volume of water becomes 10% of its initial value.

What is the maximum value of the electric field in the pulse : Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1Ã-1012 Watts, What is the maximum value of the electric field in the pulse

Which of the following statements are true : Consider the strings "catch" and "caught", and the alignment of these strings using the edit distance algorithm with fixed penalties of +1 for a deletion, +1 for an insertion and +2 for a substitution.

User Account

All Pages