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The electron relaxation time is
The mean free path is
<u>Explanation:</u>
Electron density,
Aluminium resistivity,
From the Drude's model we have:
Where:
τ= Electron relaxation time
m = mass of a charge
q = magnitude of a charge
We know, electron mass =
Charge of electron =
By substituting all given values for electron, we get
When multiply by 100 and divide by 100, we get
Mean free path is given as:
where:
l = Mean free path
= Average velocity of electrons
We know the general value for average velocity of electrons at room temperature:
Therefore,
Answer:
11.4 m
Explanation:
We are given that
Total distance traveled by cab,d=214 m
Maximum speed of cab=v=315 m/min=
1 min =60 s
Acceleration of cab=
We have to find the distance traveled by the cab while accelerating to full speed from rest.
Initial speed o f cab=u=0
Substitute the values in the formula
Hence, the cab travel 11.4 m from rest to full speed.
Answer:
Explanation:
a.) Dose equivalent is:
b.)
c.) The dose equivalent is:
Since the velocity of the real plane is 0, p=mv=0. So the paper airplane actually has more momentum since it's value is not 0.