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baherus [9]
3 years ago
12

In a paragraph of no less than five complete sentences, explain how the bubble gum experiment demonstrates the Law of Conservati

on of Mass. Remember to use proper grammar and mechanics when writing your paragraph.
Physics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

The bubble gum experiment demonstrates the law of conservation of mass in that even though the bubble gum has lost mass, this loss in mass is not because some matter present in the gum has been destroyed, but it has changed  form and has been removed from the gum.

Explanation:

In this science experiment, students investigate whether or not chewing gum should be considered eating. During the process of chewing the gum, the gum loses mass. The experiment is used to demonstrate the law of conservation of mass which states that matter can neither be created nor destroyed but may change from one form to another.

The loss in mass of the gum is due to the fact that the sugar present in the gum has changed form and has been removed from the gum. During the process of chewing the gum, the sugar in solid form present in the gum is dissolved in the saliva found in the mouth. The dissolved sugar is then swallowed and passes into the digestive tract for digestion. This shows that even though the bubble gum has lost mass, this loss in mass is not because some matter present in the gum has been destroyed, but it has changed  form and has been removed from the gum, This demonstrates the law of conservation of mass.

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The average power is 20.3 kW

Explanation:

First of all, we calculate the work done on the car: the work-energy theorem states that the work done on the car is equal to the change in kinetic energy of the car, so we have

W=K_f - K_i = \frac{1}{2}mv^2-\frac{1}{2}mu^2

where

W is the work done

K_i, K_f are the initial and final kinetic energy of the car

m=1.50\cdot 10^3 kg = 1500 kg is the mass of the car

u = 0 is the initial velocity

v = 18.0 m/s is the final velocity

Substituting,

W=\frac{1}{2}(1500)(18)^2=2.43\cdot 10^5 J

Now we can find the average power developed by the car's engine, which is given by

P=\frac{W}{t}

where

W=2.43\cdot 10^5 J is the work done

t = 12.0 s is the time taken

Substituting,

P=\frac{2.43\cdot 10^5 J}{12.0}=20,250 W = 20.3 kW

Learn more about power:

brainly.com/question/7956557

#LearnwithBrainly

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