Answer:
F = 2(50 N) - (50 N) = 50 N
Explanation:
The direction of F is the direction in which the two students are pushing.
The qualities that Galileo , Sir Isaac Newton, and Albert Einstein is that they all created models of nature. Galileo discovered Jupiter's four moons and declared that the earth revolves around the sun.Newton developed the three laws of motion, which formed the basic principles of modern physics.Albert Einstein discovered the general theory of relativity, but best known for his mass-energy equivalence formula E=mc².
Explanation:
Volume of 10 coins = 100ml - 75ml = 25ml
Volume of 1 coin = 25ml / 10 = 2.5ml
The average volume of each coin is 2.5ml.
The wavelength of the wave which is travelling along right with speed of 0. 5 m/s time 4 second point is 2.
<h3>What is the speed of wave?</h3>
Speed of wave is the rate by which the wave travels. It can be described as the distance cover by the crest or thrust of it per unit of time. It can be calculated with the following formula,
![v=f\times\lambda](https://tex.z-dn.net/?f=v%3Df%5Ctimes%5Clambda)
Here, (f) is the frequency and (λ) is the wavelength.
The frequency is inverse of time. Thus, the value of frequency in time t is,
![f=\dfrac{1}{t}\\f=\dfrac{1}{4}\\f=0.25](https://tex.z-dn.net/?f=f%3D%5Cdfrac%7B1%7D%7Bt%7D%5C%5Cf%3D%5Cdfrac%7B1%7D%7B4%7D%5C%5Cf%3D0.25)
The speed of the wave is 0.5 m/s. Put the values in the formula,
![v=f\times\lambda\\0.5=0.25\times\lambda\\\lambda=\dfrac{0.5}{0.25}\\\lambda=2](https://tex.z-dn.net/?f=v%3Df%5Ctimes%5Clambda%5C%5C0.5%3D0.25%5Ctimes%5Clambda%5C%5C%5Clambda%3D%5Cdfrac%7B0.5%7D%7B0.25%7D%5C%5C%5Clambda%3D2)
Thus, the wavelength of the wave which is travelling along right with speed of 0. 5 m/s time 4 second point is 2.
Learn more about the speed of wave here;
brainly.com/question/12215474
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Answer:
petroleum
Explanation:
Petroleum is a gas that we use that just goes into the air whilst water can be recycled and purified, wind never ever goes away, and solar power can be converted into energy.