Some scientist believe that the ozone layers of the earth had been weakening and the waters or current changes direct ever 5-7 month.
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Answer:
![1.302\ \text{kg/s}](https://tex.z-dn.net/?f=1.302%5C%20%5Ctext%7Bkg%2Fs%7D)
Explanation:
= Density of water = ![1\ \text{kg/L}](https://tex.z-dn.net/?f=1%5C%20%5Ctext%7Bkg%2FL%7D)
= Change in volume = ![220\times 0.355\ \text{L}](https://tex.z-dn.net/?f=220%5Ctimes%200.355%5C%20%5Ctext%7BL%7D)
= Time elapsed = 1 minute = 60 seconds
Mass flow rate is given by
![\dot{m}=\rho\dfrac{dV}{dt}\\ =1\times \dfrac{220\times 0.355}{60}\\ =1.302\ \text{kg/s}](https://tex.z-dn.net/?f=%5Cdot%7Bm%7D%3D%5Crho%5Cdfrac%7BdV%7D%7Bdt%7D%5C%5C%20%3D1%5Ctimes%20%5Cdfrac%7B220%5Ctimes%200.355%7D%7B60%7D%5C%5C%20%3D1.302%5C%20%5Ctext%7Bkg%2Fs%7D)
The mass flow rate is
.
Explanation:
It is given that,
The acceleration of the toboggan, ![a=1.8\ m/s^2](https://tex.z-dn.net/?f=a%3D1.8%5C%20m%2Fs%5E2)
Initial speed of the toboggan, u = 0
We need to find the distance covered by the toboggan. Using the second equation of motion as :
![s=ut+\dfrac{1}{2}at^2](https://tex.z-dn.net/?f=s%3Dut%2B%5Cdfrac%7B1%7D%7B2%7Dat%5E2)
At t = 1 s
![s=\dfrac{1}{2}\times 1.8\times 1^2](https://tex.z-dn.net/?f=s%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%201.8%5Ctimes%201%5E2)
![s_1=0.9\ m](https://tex.z-dn.net/?f=s_1%3D0.9%5C%20m)
At t = 2 s
![s=\dfrac{1}{2}\times 1.8\times 2^2](https://tex.z-dn.net/?f=s%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%201.8%5Ctimes%202%5E2)
![s_2=3.6\ m](https://tex.z-dn.net/?f=s_2%3D3.6%5C%20m)
At t = 3 s
![s=\dfrac{1}{2}\times 1.8\times 3^2](https://tex.z-dn.net/?f=s%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%201.8%5Ctimes%203%5E2)
![s_3=8.1\ m](https://tex.z-dn.net/?f=s_3%3D8.1%5C%20m)
Hence, this is the required solution.