Across what potential difference does an electron have to be accelerated in order to reach the speed v=3e7 m/s?
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Ответ:
The electric potential is 4100 V or 4.1kV.
We know that the kinetic energy of the moving electron is equal to the 1/2mv^2. On this basis, we can write;
1/2mv^2 = eV
Where;
m = mass of the electron
v = speed of the electron
V = potential of the electron
e = charge on the electron.
Hence;
V = 1/2mv^2 /e
V = 0.5 × 9.11 × 10^-31 × (3 × 10^7)^2/1.6 ×10^-19
V = 4100 V or 4.1kV
Learn more about electric potential:link
Ответ:
When an electron is accelerated through potential difference then the speed that it attain will be explained by energy conservation
here by energy conservation we can say that
change in kinetic energy of electron = electrostatic potential energy gained through given potential difference
kinetic energy is given as
electrostatic potential energy is given as
now by energy conservation
given that for electron
now by plug in values
So here it is accelerated through potential difference of 2559.4 Volts
Ответ:
A force applied to a machine to an object is the effort force.
Explanation: