Answer:
D. john checks all the reviews of an app and reads the permissions before granting access to an app.
Explanation:
Just got it correct in Plato, 100% positive.
Answer:
Movement of Electrons in opposite direction of the rotation of the pickup coil leads to the direction of Electrical energy ( Alternating current ).
Explanation:
For a Generator to generate electricity, Electrons that is found in the rotating coil of the Generator will experience some sort of force that makes them to start moving in a direction that is perpendicular to the direction of the rotating/pickup coil found in the Generator.
The conversion of mechanical energy (Rotation of the pickup coil ) to electrical energy takes place in the Generator
The generator makes an alternating current because electrons move in opposite direction of the rotating coil
In other to generate a Direct current using a generator we have to replace the slip rings with commutator.
Answer:
The wavelength of observed light on earth is 568.5 nm
Explanation:
Given that,
Velocity of spaceship ![v= 0.201c](https://tex.z-dn.net/?f=v%3D%200.201c)
Wavelength of laser ![\lambda= 697\ nm](https://tex.z-dn.net/?f=%5Clambda%3D%20697%5C%20nm)
We need to calculate the wavelength of observed light on earth
Using formula of wavelength
![\lambda_{0}=\lambda_{e}\times\sqrt{\dfrac{1-\dfrac{v}{c}}{1+\dfrac{v}{c}}}](https://tex.z-dn.net/?f=%5Clambda_%7B0%7D%3D%5Clambda_%7Be%7D%5Ctimes%5Csqrt%7B%5Cdfrac%7B1-%5Cdfrac%7Bv%7D%7Bc%7D%7D%7B1%2B%5Cdfrac%7Bv%7D%7Bc%7D%7D%7D)
![\lambda_{0}=697\times10^{-9}\times\sqrt{\dfrac{1-\dfrac{0.201 c}{c}}{1+\dfrac{0.201c}{c}}}](https://tex.z-dn.net/?f=%5Clambda_%7B0%7D%3D697%5Ctimes10%5E%7B-9%7D%5Ctimes%5Csqrt%7B%5Cdfrac%7B1-%5Cdfrac%7B0.201%20c%7D%7Bc%7D%7D%7B1%2B%5Cdfrac%7B0.201c%7D%7Bc%7D%7D%7D)
![\lambda_{0}=697\times10^{-9}\times\sqrt{\dfrac{1-0.201}{1+0.201}}](https://tex.z-dn.net/?f=%5Clambda_%7B0%7D%3D697%5Ctimes10%5E%7B-9%7D%5Ctimes%5Csqrt%7B%5Cdfrac%7B1-0.201%7D%7B1%2B0.201%7D%7D)
![\lambda=5.685\times10^{-7}\ m](https://tex.z-dn.net/?f=%5Clambda%3D5.685%5Ctimes10%5E%7B-7%7D%5C%20m)
![\lambda=568.5\times10^{-9}\ m](https://tex.z-dn.net/?f=%5Clambda%3D568.5%5Ctimes10%5E%7B-9%7D%5C%20m)
![\lambda=568.5\ nm](https://tex.z-dn.net/?f=%5Clambda%3D568.5%5C%20nm)
Hence, The wavelength of observed light on earth is 568.5 nm
Answer:
A
Explanation:
because it is accelerating and as the vehicle accelerates the speed increas
Explanation:
u=40
v=?
h=?
v²-u²=2gs
0²-40²=2×10×s
160=20s
s=160/20
=80m/s
total distance= upward distance ×downward distance
=80+80
=160m
total displacement=0 because u and v is the same.