Answer:
3. Work
Explanation:
Number 1 isn't correct because you are not using efficiency to hold books and walk across the room.
Number 2 could be correct but isn't in this situation because you use power only to hold the books but not to walk across the room.
Number 4 is not correct because you need to do work to do something.
Answer:
Answer:
r=\dfrac{1}{B}\sqrt{\dfrac{2Vm}{e}}r=
B
1
e
2Vm
Explanation:
Let m and e are the mass and charge of an electron. It is accelerated from rest through a potential difference V and are then deflected by a magnetic field that is perpendicular to their velocity. Let v is the velocity of the electron. It can be calculated as :
\dfrac{1}{2}mv^2=eV
2
1
mv
2
=eV
v=\sqrt{\dfrac{2eV}{m}}v=
m
2eV
When the electron enters the magnetic field, the centripetal force is balanced by the magnetic force as :
\dfrac{mv^2}{r}=evB
r
mv
2
=evB
r=\dfrac{mv}{eB}r=
eB
mv
or
r=\dfrac{1}{B}\sqrt{\dfrac{2Vm}{e}}r=
B
1
e
2Vm
So, the radius of the resulting electron trajectory is \dfrac{1}{B}\sqrt{\dfrac{2Vm}{e}}
B
1
e
2Vm
. Hence, this is the required solution.
50 μm = 5 × 10⁻⁵ m in diameter
<h3>Steps</h3>
1μm = 1 x m
<h3>Given</h3>
1μm = 1 x m
50μm = 50 x m
50μm = 50 x 10 x
50μm = 5 x m
<h3>Conclusion</h3>
A human hair is approximately 50 μm = 5 × 10⁻⁵ m in diameter
<h3>How big is a human hair on average?</h3>
between 17 and 181 micrometers
The typical diameter of human hair can range from 17 micrometers to 181 micrometers, according to research. Using 50 micrometers as an average figure for its diameter, this translates to 50,000 nanometers.
<h3>What is a human hair's diameter in inches?</h3>
The finest hair is flaxen, with a diameter ranging from 1/1500 to 1/500 of an inch. the coarsest hair is black, measuring between 1/450 and 1/140 of an inch.
learn more about human hair diameter here
<u>brainly.com/question/13147893</u>
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Global warming is what will happen