That is a thread ball valves
Answer and Explanation:
In any experiment, the observed values are the actual values obtained in any experiment.
The calculated values are the values that are measured by using the observed values in a formula.
The observed values are primary values whereas the calculated values are the secondary values as calaculations are made using observed values.
Yes, if the observed values are of low accuracy.
The values should be recorded with proper care and attention in order to avoid any error.
Answer:
Tension can be easily explained in the case of bodies hung from chain, cable, string
Explanation
uniform speed, tension; T = W.
T=m(g±a)
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