The work done is 8427 J while the energy expended is 80.25 W.
<h3>What is work done?</h3>
Work done is defined as the product of the force and the distance. We know that the work done in a gravitational field is given as;
W = mgh
Total mass of the water bucket and chain = 13.9 kg + 19.3 kg = 33.2Kg
Distance covered = 25.9 m
W = 33.2Kg * 9.8 m/s^2 * 25.9 m
W = 8427 J
Recall that the work done = Energy expended
Power = Energy expended/ Time
Power = 8427 J/ 1.75 * 60 seconds
Power = 80.25 W
Learn more about work and energy:brainly.com/question/17290830
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Answer:
A combustion reaction is a major class of chemical reactions, commonly referred to as "burning." Combustion usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water.
Explanation:
Burning wood in air is an exothermic process (it releases heat), but there is an energy barrier, so it requires a bit of heat in the beginning to get the reactions started. Wood reacts with oxygen in the air to form (mostly) carbon dioxide and water vapor.
White coat I think is the answer
Answer:
its under the insert table
Explanation:
Answer:
![f = 5.95 \times 10^{14} Hz](https://tex.z-dn.net/?f=f%20%3D%205.95%20%5Ctimes%2010%5E%7B14%7D%20Hz)
Explanation:
As we know that the frequency of the wave is given as
![f = \frac{c}{\lambda}](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7Bc%7D%7B%5Clambda%7D)
here we know that
![c = 3 \times 10^8 m/s](https://tex.z-dn.net/?f=c%20%3D%203%20%5Ctimes%2010%5E8%20m%2Fs)
also we know that
![\lambda = 5.04 \times 10^{-7} m](https://tex.z-dn.net/?f=%5Clambda%20%3D%205.04%20%5Ctimes%2010%5E%7B-7%7D%20m)
now we have
![f = \frac{3 \times 10^8}{5.04 \times 10^{-7}}](https://tex.z-dn.net/?f=f%20%3D%20%5Cfrac%7B3%20%5Ctimes%2010%5E8%7D%7B5.04%20%5Ctimes%2010%5E%7B-7%7D%7D)
![f = 5.95 \times 10^{14} Hz](https://tex.z-dn.net/?f=f%20%3D%205.95%20%5Ctimes%2010%5E%7B14%7D%20Hz)