The answer is b because the sun's surface temperature is 5,778 K.
Answer:
(a) The horizontal ground reaction force ![F_{g,x}=325\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cx%7D%3D325%5C%2C%20N)
(b) The vertical ground reaction force ![F_{g,y}=696\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cy%7D%3D696%5C%2C%20N)
(c) The resultant ground reaction force ![F_g=768\, N](https://tex.z-dn.net/?f=F_g%3D768%5C%2C%20N)
Explanation:
Given
John mass , m = 65 kg
Horizontal acceleration , ![a_x= 5.0 \frac{m}{s^{2}}](https://tex.z-dn.net/?f=a_x%3D%205.0%20%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D)
Vertical acceleration , ![a_y=0.9 \frac{m}{s^{2}}](https://tex.z-dn.net/?f=a_y%3D0.9%20%5Cfrac%7Bm%7D%7Bs%5E%7B2%7D%7D)
(a) Using Newton's 2nd law in horizontal direction
![F_{g,x}=ma_x](https://tex.z-dn.net/?f=F_%7Bg%2Cx%7D%3Dma_x)
=>![F_{g,x}=65\times 5\, N=325\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cx%7D%3D65%5Ctimes%205%5C%2C%20N%3D325%5C%2C%20N)
Thus the horizontal ground reaction force ![F_{g,x}=325\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cx%7D%3D325%5C%2C%20N)
(b) Using Newton's 2nd law in vertical direction
![F_{g,y}-mg=ma_y](https://tex.z-dn.net/?f=F_%7Bg%2Cy%7D-mg%3Dma_y)
=>![F_{g,y}=mg+ma_y](https://tex.z-dn.net/?f=F_%7Bg%2Cy%7D%3Dmg%2Bma_y)
=>![F_{g,y}=65\times (9.81+0.9)\, N=696\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cy%7D%3D65%5Ctimes%20%289.81%2B0.9%29%5C%2C%20N%3D696%5C%2C%20N)
Thus the vertical ground reaction force ![F_{g,y}=696\, N](https://tex.z-dn.net/?f=F_%7Bg%2Cy%7D%3D696%5C%2C%20N)
(c) Resultant ground reaction force is
![F_g=(F_{g,x}^{2}+F_{g,y}^{2})^{\frac{1}{2}}](https://tex.z-dn.net/?f=F_g%3D%28F_%7Bg%2Cx%7D%5E%7B2%7D%2BF_%7Bg%2Cy%7D%5E%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D)
=>![F_g=(325^{2}+696^{2})^{\frac{1}{2}}\, N=768\, N](https://tex.z-dn.net/?f=F_g%3D%28325%5E%7B2%7D%2B696%5E%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%5C%2C%20N%3D768%5C%2C%20N)
=>![F_g=768\, N](https://tex.z-dn.net/?f=F_g%3D768%5C%2C%20N)
Thus the resultant ground reaction force ![F_g=768\, N](https://tex.z-dn.net/?f=F_g%3D768%5C%2C%20N)
Most radiation exposure comes from natural sources. These so-called "natural sources" include Radon, Internal, Terrestrial, and Cosmic. Among that, Radon proves to be the largest source of radiation. Radon is a naturally occurring radioactive gas that comes from the breakdown of uranium.
Answer:
Earth's crust, called the lithosphere, consists of 15 to 20 moving tectonic plates. The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.
beainliest?
Answer:
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