Answer:
It is another machine that helps the main machine. Hope that helps!
Answer:
demand (an amount) as a price from someone for a service rendered or goods supplied.
Because of the magnets are actually electromagnetics aka what causes them to repel each other the atoms and the electrons will make a force of them pushing away from each other because the two magnetic poles are not north and south
<span>Freezing involves the decrease in value of latent heat by 80 Cal/gm and a change of state from the Liquid phase to the solid phase.
So, in short, Fill in the blank as follows:
1st blank = Release/decrease
2nd blank = Liquid
Hope this helps!
</span>
Answer:
2.1 s
Explanation:
The motion of the ball is a projectile motion. We know that the horizontal range of the ball is
![d = 50 m](https://tex.z-dn.net/?f=d%20%3D%2050%20m)
And that the initial speed of the ball is
![u=25 m/s](https://tex.z-dn.net/?f=u%3D25%20m%2Fs)
at an angle of
![\theta=20^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D20%5E%7B%5Ccirc%7D)
So, the horizontal speed of the ball (which is constant during the entire motion) is
![u_x = u cos \theta = 25 \cdot cos 20^{\circ} = 23.5 m/s](https://tex.z-dn.net/?f=u_x%20%3D%20u%20cos%20%5Ctheta%20%3D%2025%20%5Ccdot%20cos%2020%5E%7B%5Ccirc%7D%20%3D%2023.5%20m%2Fs)
And since the horizontal range is 50 m, the time taken for the ball to cover this distance was
![t=\frac{d}{u_x}=\frac{50}{23.5}=2.1 s](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bd%7D%7Bu_x%7D%3D%5Cfrac%7B50%7D%7B23.5%7D%3D2.1%20s)
which is the time the ball spent in air.