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lina2011 [118]
3 years ago
6

What are the principals of electric arc welding

Physics
1 answer:
Wewaii [24]3 years ago
7 0
Principles<span> of </span>arc welding<span>. </span>Arc welding<span> is a </span>welding<span> process, in which heat is generated by an </span>electric arc<span> struck between an electrode and the work piece. </span>Electric arc<span> is luminous</span>electrical<span> discharge between two electrodes through ionized gas.</span>
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With what initial velocity must an object be thrown upward from a height of 2 meters to reach a maximum hieght of 200 meters
larisa86 [58]
The equations of motion to use for a constant acceleration a = g = -9.81:
v = gt + v_0
y = \frac{1}{2} g t^{2} + v_0t + y_0

at the highest point the velocity must be zero:
0 = gt + v_0 \\ v_0 = -gt
combine both equations:
y =  \frac{1}{2}  \frac{v_0^{2} }{g}  -   \frac{v_0^{2} }{g}  + y_0=  -\frac{1}{2}  \frac{v_0^{2} }{g} + y_0
Solve for v₀:
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3 years ago
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gas molecules having at least one oxygen atom

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Answer Choices:

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3 years ago
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Explanation:

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3 years ago
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