Correct Answer is B.
In a parallel circuit, the voltage is same across all the branches however the current in each branch is different and depends on the resistance of that branch.
Points to Remember:
1) In series circuit current remains the same and voltage varies
2) In parallel circuit voltage remains the same and current varies
Answer:
A) The work done by the engine is: 6.8MJ/L
B) The fuel efficiency is ![11.53{\frac{km}{L}](https://tex.z-dn.net/?f=11.53%7B%5Cfrac%7Bkm%7D%7BL%7D)
Explanation:
A)
We know that the gasoline releases about 3.4*10^7 J of energy for each liter, and about 80% of that energy is lost as heat; it means that the other 20% of the energy released is taken for the engine to do work. In that sense, the work done by the engine is 20% of the 3.4*10^7 J that the gasoline releases for 1 liter, so:
![W_E=3.4*10^7J*\frac{20}{100}=6.8*10^6J =6.8MJ](https://tex.z-dn.net/?f=W_E%3D3.4%2A10%5E7J%2A%5Cfrac%7B20%7D%7B100%7D%3D6.8%2A10%5E6J%20%3D6.8MJ)
This last can be seen as a conversion factor, where we multiply the energy released by the gasoline by the factor (20 J taken for do work for each 100 J released).
B) We know that the car requires 5.9*10^5 J of work <u>for each km traveled</u>. That is the energy that the car requires, but it is not the energy that you have to give to the car; take in mind that the energy that you put in the car in gasoline liters will be not taken all, but just 20%. Also we know that the work done by the engine for 1 liter of gasoline is 6.8MJ, and that is just the work taken for do work (the useful energy), so we can connect both data:
![{\frac{1km}{5.9*10^5J}*\frac{6.8*10^6J}{1L}=11.53\frac{km}{L}](https://tex.z-dn.net/?f=%7B%5Cfrac%7B1km%7D%7B5.9%2A10%5E5J%7D%2A%5Cfrac%7B6.8%2A10%5E6J%7D%7B1L%7D%3D11.53%5Cfrac%7Bkm%7D%7BL%7D)
The first fraction,
is the ratio or the proportion of (1 km requieres 5.9*10^5 J); and we multiply by the second fraction
, which is the ratio: 6.8*10^6 J of work done for each liter of gasoline.
<span>For hydrolysis to monosaccharides, one molecule of a disaccharide needs only one molecule of water.
C12H22O11 (sucrose) + H2O = C6H12O6 (glucose) + C6H12O6 (fructose)
Structurally, a disaccharide molecule may be viewed as a product formed by the condensation of two molecules of monosaccharides with the elimination of a water molecule. So, only one H2O molecule is needed for the reverse process.</span>
According to William James, the purpose of psychology was to "study the function of behavior".
William James is known to be the first to offer a course of psychology in US. He also remains a popularly read philosopher, and his hypotheses on pragmatism have contributed both to the field of psychology and philosophy. As per James' pragmatism, the estimation of a thought is reliant upon its helpfulness in the real world as opposed to its outright truth.
Answer:
Work = (force) x (distance)
The work he did: Work = (700 N) x (4m) = 2,800 joules
The rate at which
he did it (power): Work/time = 2,800 joules/2 sec
= 1,400 joules/sec
= 1,400 watts
= 1.877... horsepower (rounded)
Explanation:
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