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Electrical metallic tubing would be used in an electrical installation because it <span>is less expensive.</span>
Answer:
0.00493 m/s
Explanation:
T = Temperature of the isotope = 85 nK
R = Gas constant = 8.341 J/mol K
M = Molar mass of isotope = 86.91 g/mol
Root Mean Square speed is given by

The Root Mean Square speed is 0.00493 m/s
The car's speed is 240km/4hr= 60km/hr.
There's not enough information given in the question to determine its velocity.
True the amplitude of a wave determines the volume of a sound