Answer:
Explanation:
Given
radius of track 
inclination 
mass of car 
coefficient of kinetic friction 
From diagram

Where N=Normal reaction



From 1 2 and 3 we get maximum velocity without skidding




Tents are used for a wide variety of purposes, including recreation, exploration, military encampment, and public gatherings such as circuses, religious services, theatrical performances, and exhibitions of plants or livestock.
Explanation:
Hope this helps.
Im not sure but it might be the last option: it gives reasons to be believed and trusted
A long narrow solenoid has length l and a total of N turns, each of which has cross-sectional area A. Its inductance is μ₀ (
).
To find the answer, we need to know about the magnetic field due to a solenoid.
<h3>What is the magnetic field due to a solenoid?</h3>
- A solenoid is an insulated wire wound in the form of a helix.
- Its length is very large compared to its diameter.
- The magnetic field due to solenoid carrying current
can be written as,
μ₀n

- We have an expression for magnetic flux as,
Φ
Where, A is the area.
- Substituting above value of magnetic field in the expression of magnetic flux, we get,
Ф
μ₀
- In terms of inductance, we can express the magnetic flux linked with the coil as,
Ф 
- By equating above two equations of magnetic flux, we get the expression for inductance as,
μ₀ (
)

μ₀ (
).
Thus, we can conclude that the expression for inductance is μ₀ (
).
Learn more about the solenoid here:
brainly.com/question/28058306
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