2 minutes = 120s
S (distance) = v (velocity) x t (time)
S= 3 x 120
S = 360m
So, D is a correct answer
Nitric acid (NHO3) because plants need nitrogen to survive, hope this helped.
For the answer tot he questions above, I know this one.
The answers are
<span>-sets 2-3 hours after the sun sets - waxing crescent
-occurs about 3 days before the new moon - waning crescent
-occurs 14 days after the new moon - full moon
-rises at about the time the sun sets - full moon
-visible due south at midnight - full moon
-visible near eastern horizon just before sunrise waning crescent
-visible near western horizon about an hour after sunset waxing crescent</span>
The filament used in light bulb is Tungsten(W).. It's a metal with melting point of about 3300 °C.
Answer:
![F=3.61\times 10^{-47}\ N](https://tex.z-dn.net/?f=F%3D3.61%5Ctimes%2010%5E%7B-47%7D%5C%20N)
Explanation:
Mass of a proton, ![m_p=1.67\times 10^{-27}\ kg](https://tex.z-dn.net/?f=m_p%3D1.67%5Ctimes%2010%5E%7B-27%7D%5C%20kg)
Mass of an electron, ![m_e=9.11\times 10^{-31}\ kg](https://tex.z-dn.net/?f=m_e%3D9.11%5Ctimes%2010%5E%7B-31%7D%5C%20kg)
The distance between the electron and the proton is, ![r=5.3\times 10^{-11}\ m](https://tex.z-dn.net/?f=r%3D5.3%5Ctimes%2010%5E%7B-11%7D%5C%20m)
We need to find the mutual attractive gravitational force between the electron and proton. The gravitational force is given by :
![F=G\dfrac{m_em_p}{r^2}](https://tex.z-dn.net/?f=F%3DG%5Cdfrac%7Bm_em_p%7D%7Br%5E2%7D)
Where G is the universal Gravitational constant
![F=6.67\times 10^{-11}\times \dfrac{9.11\times 10^{-31}\times 1.67\times 10^{-27}}{(5.3\times 10^{-11})^2}\\\\F=3.61\times 10^{-47}\ N](https://tex.z-dn.net/?f=F%3D6.67%5Ctimes%2010%5E%7B-11%7D%5Ctimes%20%5Cdfrac%7B9.11%5Ctimes%2010%5E%7B-31%7D%5Ctimes%201.67%5Ctimes%2010%5E%7B-27%7D%7D%7B%285.3%5Ctimes%2010%5E%7B-11%7D%29%5E2%7D%5C%5C%5C%5CF%3D3.61%5Ctimes%2010%5E%7B-47%7D%5C%20N)
So, the force between the electron and proton is
.