1st law solutions

4. Rowing full speed is putting maximum demands on Jim's muscles. What metabolic process is providing most of the energy for Jim’s muscles at this point and why do Jim's muscles feel like they are burning? (5 points)

C6H12O6 + 6O2 → 6CO2 + 6H2O + 686 kilocalories of energy/mole of glucose oxidized

always give out or take in energy most of the time this is heat energy

5) Output is produced according to Q = 4LK, where L is the quantity of labor input and K is the quantity

11) When energy was studied earlier in the year, a connection was found between kinetic energy, potential energy, positive work, and negative work. What is the connection?

Introduction: The theory behind this experiment is the heat of a reaction (∆E) plus the work (W) done by a reaction is equal to

B. There are three main stages to the thermal cycling process. Each step is repeated 20-40 times doubling

Enthalpy (H)- The sum of the internal energy and the pressure – volume product of a system H= E + PV.

P4: Explain the physiology of two named body systems in relation to energy metabolism in the body

We will be using 6 different fuels to heat up 100ml of water, and find out the changes of the temperature. We will measure the temperatures of the water before and after the experiment. We will burn heat the water for exactly 2 minutes, and check the changes in temperature. The change in temperature will allow us to work out the energy given off the fuel by using this formula:

When the environment is in equilibrium, it has a minimum potential energy (mgz) and a zero speed (v=0), so kinetic and potential energy changes are omitted and it reduced to Eq. 3.

Kinetic and potential energy are convertible while negative work is done by consuming energy, and positive work is done by absorbing energy.

refers to the quantity of energy needed to get work done or transfer heat e.g.

c.   Compare the elasticities in parts a and b. Are they equal? Should they be equal?

But, from (b) it can be observed that heat Q1 follows a loop though HE and HP and perform no function. The equivalent system thus can be shown as figure. From fig. (c) it is obvious the heat is being transferred from low temperature, thermal energy reservoir to high temperature thermal energy reservoir, without any external work. It is therefore violation of Clausius statement. Thus, violation of Kelvin Plank’s and we can say, the two statements are equivalent.