The drill press's primary function is drilling, but it can also be used for reaming, countersinking, counterboring, and tapping.
<h3>Before drilling a hole, what tool do machinists use to precisely locate the hole?</h3>
Making a tiny divot with a Spotting Drill will help you find the drill's center when you start a plunge. Some machinists use these tools to chamfer the top of drilled holes, which is a different function for them. When inserted, screw heads sit flush with the component thanks to the chamfer.
<h3>What device do we employ to drill a hole in a part?</h3>
Most often, hole-making tools are related with drilling and drill bits. They offer a quick, simple, and affordable technique to make machined holes. Drill bits operate by axially entering the workpiece and creating a hole with a diameter.
To know more about drill visit:-
brainly.com/question/4281675
#SPJ4
First of all,
The electric field at the surface of the sphere is given by
E = kQ/r²
The field strength at which breakdown occurs in the air is <span>3.0 MV/m
</span>
So, E = 3.0 MV/m
<span>The sphere potential is defined as
V = kQ/r</span>
<span>If we divide E/V we get
E = V/r </span>
<span>r = V/E = 20000V / 3.10^6 V/m = 6.66 </span>10^-3 m = 6.66 mm
2. Charge
<span>V = kQ/r .............>>
</span>
Q = Vr/k = 20000V *( 6.66 10^-3 m)/ (9.10^9 N m2/C2) = 1.481 10^-8 C
Total buns = 21 1/2 = 43/2 buns
1/3 size buns would be: 43/2 / 1/3 = 43*3 / 2 = 129/2
In short, Your Answer would be 129/2 or 64 1/2 or 64.5
Hope this helps!
I think it is C but If not sorry ✌