As per angular momentum conservation we can say

here we know that

we know that




now from above equation



so speed is 4.4 m/s
Given that:
μ = 36
<span>σ = 3
</span>
<span>Standardize x to z = (x - μ) / σ </span>
<span>P( 39 < x < 42) = P[( 39 - 36) / 3 < Z < ( 42 - 36) / 3] </span>
<span>P( 1 < Z < 2) = P( x < 2) - P( x < 1)
= 0.9772 - 0.8413
= 0.1359 </span>
<span>(0.1359)(30)
= 4.0777
= 4 days</span>
Answer:
In a permanent magnet, the magnetic field comes from the motion of the electrons inside the material, or, more precisely, from something called the electron spin. The electron spin is a bit like the Earth spinning on its axis. The magnetic field is a vector, the same way the electric field is.
Explanation:
Answer:
Keeping planets in the orbit
Explanation:
I think this is the correct answer...