Yes. Your weight is pulling you to center of the world. Weight is a force (gravity).
And since you're still on where you sit, the thing you're sitting on, exerts an equal force to your weight. That's stated in Isaac Newton's third law of motion. Simply 'For every action, there is an equal and opposite reaction.'
Answer:
![4.3\cdot 10^{-12} J](https://tex.z-dn.net/?f=4.3%5Ccdot%2010%5E%7B-12%7D%20J)
Explanation:
The fusion reaction in this problem is
![4^1_1H \rightarrow ^4_2He +2e^+](https://tex.z-dn.net/?f=4%5E1_1H%20%5Crightarrow%20%5E4_2He%20%2B2e%5E%2B)
The total energy released in the fusion reaction is given by
![\Delta E = c^2 \Delta m](https://tex.z-dn.net/?f=%5CDelta%20E%20%3D%20c%5E2%20%5CDelta%20m)
where
is the speed of light
is the mass defect, which is the mass difference between the mass of the reactants and the mass of the products
For this fusion reaction we have:
is the mass of one nucleus of hydrogen
is the mass of one nucleus of helium
So the mass defect is:
![\Delta m =4m(^1_1 H)-m(^4_2 He)=4(1.007825u)-4.002603u=0.028697u](https://tex.z-dn.net/?f=%5CDelta%20m%20%3D4m%28%5E1_1%20H%29-m%28%5E4_2%20He%29%3D4%281.007825u%29-4.002603u%3D0.028697u)
The conversion factor between atomic mass units and kilograms is
![1u=1.66054\cdot 10^{-27}kg](https://tex.z-dn.net/?f=1u%3D1.66054%5Ccdot%2010%5E%7B-27%7Dkg)
So the mass defect is
![\Delta m =(0.028697)(1.66054\cdot 10^{-27})=4.765\cdot 10^{-29}kg](https://tex.z-dn.net/?f=%5CDelta%20m%20%3D%280.028697%29%281.66054%5Ccdot%2010%5E%7B-27%7D%29%3D4.765%5Ccdot%2010%5E%7B-29%7Dkg)
And so, the energy released is:
![\Delta E=(3.0\cdot 10^8)^2(4.765\cdot 10^{-29})=4.3\cdot 10^{-12} J](https://tex.z-dn.net/?f=%5CDelta%20E%3D%283.0%5Ccdot%2010%5E8%29%5E2%284.765%5Ccdot%2010%5E%7B-29%7D%29%3D4.3%5Ccdot%2010%5E%7B-12%7D%20J)
Answer:
Endorphins
Explanation:
They are realeased in responce to stress or pain in the body
I'm not sure if this was exactly what you were looking for but hope it helped.
Answer:
the property of liquid are
1 they can flow from one place to another if surface is slanted
2 it cannot be compressed