Please note that magnetic field lines do not cross. its hard to draw on phone
Answer:
Current, I = 0.0011 A
Explanation:
It is given that,
Diameter of rod, d = 2.56 cm
Radius of rod, r = 1.28 cm = 0.0128 m
The resistivity of the pure silicon,
Length of rod, l = 20 cm = 0.2 m
Voltage,
The resistivity of the rod is given by :
R = 893692.30 ohms
Current flowing in the rod is calculated using Ohm's law as :
V = I R
I = 0.0011 A
So, the current flowing in the rod is 0.0011 A. Hence, this is the required solution.
We have,
- Mass of both students is 60 kg
- Surface area of heels of one student say A is 0.45 cm² = 0.45/10000 m²
- Surface area of heals of another student say B is 74 cm² = 74/10000 m²
And we know that,
Here, area is provided but the force applied will be due to the acceleration of gravity so,
- F = ma
- F = 60 × 9.8
- F = 588
Now, let us calculate the pressure applied by both students;
Pressure(Student A)
- P = 588/0.45 × 10000
- P = 58800 × 10000/45
- P = 1306.6 × 10000
- P = 1306000.0 pascal
Pressure(Student B)
- P = 588/74 × 10000
- P = 5880000/74
- P = 7837.83
From the above two solutions we can say that, Pressure(Student A) > Pressure(student B)
And thus we can also say that,
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<span>The period of a wave can be calculate according T = 1 / f
where T is wave period and f is frequency,
then in our problem we have a wave of 100 Hz so:
T = 1 / 100 = 0.01 seconds
The wave have a period of 0.01 seconds.
Optinaly we could also calculate the speed: V=wavelenght/period= 2/0.01= 200 m/s</span>