Answer:
![\lambda=1.03\times 10^{-3}\ m](https://tex.z-dn.net/?f=%5Clambda%3D1.03%5Ctimes%2010%5E%7B-3%7D%5C%20m)
Explanation:
Given that,
The energy of the microwave oven is
.
We need to find the wavelength of these photons.
![1.2\times 10^{-3}\ eV=1.2\times 10^{-3}\times 1.6\times 10^{-19}\\\\=1.92\times 10^{-22}\ J](https://tex.z-dn.net/?f=1.2%5Ctimes%2010%5E%7B-3%7D%5C%20eV%3D1.2%5Ctimes%2010%5E%7B-3%7D%5Ctimes%201.6%5Ctimes%2010%5E%7B-19%7D%5C%5C%5C%5C%3D1.92%5Ctimes%2010%5E%7B-22%7D%5C%20J)
The energy of a wave is given by :
![E=\dfrac{hc}{\lambda}\\\\\lambda=\dfrac{hc}{E}](https://tex.z-dn.net/?f=E%3D%5Cdfrac%7Bhc%7D%7B%5Clambda%7D%5C%5C%5C%5C%5Clambda%3D%5Cdfrac%7Bhc%7D%7BE%7D)
Put all the values,
![\lambda=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{1.92\times 10^{-22}}\\\\\lambda=1.03\times 10^{-3}\ m](https://tex.z-dn.net/?f=%5Clambda%3D%5Cdfrac%7B6.63%5Ctimes%2010%5E%7B-34%7D%5Ctimes%203%5Ctimes%2010%5E8%7D%7B1.92%5Ctimes%2010%5E%7B-22%7D%7D%5C%5C%5C%5C%5Clambda%3D1.03%5Ctimes%2010%5E%7B-3%7D%5C%20m)
So, the wavelength of these photon is
.
The Pacific is loosely shaped like a triangle, opening widely to the south but barely at all to the north, while the Atlantic is shaped like an hourglass with the choke point located very loosely at the equator (somewhat south of it in the west).
Answer:
1270 J
Explanation:
Recall that the mechanical energy of a system is the addition of the Potential energy and the Kinetic energy at any given time.
As the skier descends, potential energy is converted into kinetic energy, but the total mechanical energy should remain the same.
We see that it is not the case, so that difference is what has gone into thermal energy; 19500 J - 18230 J = 1270 J
<span>BSL Physics Glossary - air resistance - definition. Translation: Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air.</span><span>
</span>
Answer:
![|P_3|=21.242m/s](https://tex.z-dn.net/?f=%7CP_3%7C%3D21.242m%2Fs)
Explanation:
From the question we are told that:
Mass ![m=200g=0.2](https://tex.z-dn.net/?f=m%3D200g%3D0.2)
Speed ![v=82.0m/s](https://tex.z-dn.net/?f=v%3D82.0m%2Fs)
Mass ![M_2=300g=0.3kg](https://tex.z-dn.net/?f=M_2%3D300g%3D0.3kg)
Speed ![V_2=45.0m/s](https://tex.z-dn.net/?f=V_2%3D45.0m%2Fs)
Generally the equation for Magnitude of the Third piece is mathematically given by
![P_1+P_2+P_3=0](https://tex.z-dn.net/?f=P_1%2BP_2%2BP_3%3D0)
![|P_3|=|P_1+P_2|](https://tex.z-dn.net/?f=%7CP_3%7C%3D%7CP_1%2BP_2%7C)
Where
![P_1=m_1v_1](https://tex.z-dn.net/?f=P_1%3Dm_1v_1)
![P_1=0.2*82](https://tex.z-dn.net/?f=P_1%3D0.2%2A82)
![P_1=16.4kgm/s](https://tex.z-dn.net/?f=P_1%3D16.4kgm%2Fs)
And
![P_2=0.3*45](https://tex.z-dn.net/?f=P_2%3D0.3%2A45)
![P_2=13.5kgm/s](https://tex.z-dn.net/?f=P_2%3D13.5kgm%2Fs)
Therefore
![|P_3|=\sqrt{16.4^2+13.5^2}](https://tex.z-dn.net/?f=%7CP_3%7C%3D%5Csqrt%7B16.4%5E2%2B13.5%5E2%7D)
![|P_3|=21.242m/s](https://tex.z-dn.net/?f=%7CP_3%7C%3D21.242m%2Fs)