Explain what relative weight is and why it is important to the calculation of atomic mass.
1 answer:
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Answer:
77362.56 J
163730.28571 J
Explanation:
A = Area = 25 mm²
l = Length = 300 mm
K = Constant =
= Heat transfer factor = 0.75
= Melting factor = 0.63
T = Melting point of low carbon steel = 1760 K
Volume of the fillet would be
The unit energy for melting is given by
Heat would be
Heat required to weld is 77362.56 J
Amount of heat generation is given by
The heat generated at the welding source is 163730.28571 J
Answer:
20 m/s
Explanation:
The stored energy is transformed to kinetic energy and since kinetic energy is given by
where m is the mass of arrow in Kg and v is the velocity of the arrow in m/s. From the principle of energy, all the energy is transformed to KE.
KE= Energy stored in bow
Changing mass from 50 g to Kg we divide by 1000 hence m=50/1000=0.05 Kg
Substituting 0.05 Kg for m and 10 J for KE then we have
0.5\times 0.05\times v^{2}=10 J
Making v the subject of the formula then
Therefore, the velocity is equivalent to 20 m/s