Answer:
There are two methods generally used to magnetize permanent magnets: static magnetization and pulse magnetization.
Answer:
1.5 × 10³⁶ light-years
Explanation:
A certain square region in interstellar space has an area of approximately 2.4 × 10⁷² (light-years)². The area of a square can be calculated using the following expression.
A = l²
where,
A is the area of the square
l is the side of the square
l = √A = √2.4 × 10⁷² (light-years)² = 1.5 × 10³⁶ light-years
Answer:
The expression for the initial speed of the fired projectile is:
![\displaystyle v_0=\frac{M+m}{m}(2gL[1-cos(\theta)]^{\frac{1}{2}})](https://tex.z-dn.net/?f=%5Cdisplaystyle%20v_0%3D%5Cfrac%7BM%2Bm%7D%7Bm%7D%282gL%5B1-cos%28%5Ctheta%29%5D%5E%7B%5Cfrac%7B1%7D%7B2%7D%7D%29)
And the initial speed ratio for the 9.0mm/44-caliber bullet is 1.773.
Explanation:
For the expression for the initial speed of the projectile, we can separate the problem in two phases. The first one is the moment before and after the impact. The second phase is the rising of the ballistic pendulum.
First Phase: Impact
In the process of the impact, the net external forces acting in the system bullet-pendulum are null. Therefore the linear momentum remains even (Conservation of linear momentum). This means:
(1)
Second Phase: pendular movement
After the impact, there isn't any non-conservative force doing work in al the process. Therefore the mechanical energy remains constant (Conservation Of Mechanical Energy). Therefore:
(2)
The height of the pendulum respect L and θ is:
(3)
Using equations (1),(2) and (3):
(4)
The initial speed ratio for the 9.0mm/44-caliber bullet is obtained using equation (4):

Answer:

Explanation:
From the question we are told that
Piston-cylinder initial Volume of air 
Piston-cylinder initial temperature 
Piston-cylinder initial pressure 
Supply line temperature
Supply line pressure 
Valve final pressure 
Piston movement pressure 
Piston-cylinder final Volume of air
Piston-cylinder final temperature 
Piston-cylinder final pressure 
Generally the equation for conservation of mass is mathematically given by
where
Initial moment



Final moment



Work done by Piston movement pressure




Heat function



Therefore


It is given mathematically that the system lost or dissipated Heat of
