Answer:
v = 1247.92 m/s
Explanation:
The formula for kinetic energy is given as follows:
Another formula that is used for Kinetic Energy is given as:
Comparing both formulae for K.E:
where,
v = rms speed of helium molecule = ?
K = Boltzmann Constant = 1.38 x 10⁻²³ J/k
T = Absolute Temperature = 250 K
m = mass of helium molecule = 6.646 x 10⁻²⁷ kg
Therefore,
<u>v = 1247.92 m/s</u>
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Answer:
Yellow
Explanation:
Yellow light has lesser energy than blue light, this means blue light has a much smaller wavelenght. For the width of the central band to be greater, the wavelenght has to be more, and yellow light has a much larger wavelenght
The mass of an object that weights 7 N on earth would be 0.7142857...
Weight = Mass x acceleration of gravity ( = 9.8)
7/ 9.8 = 0.7142857...
If an object weights 450 N, then it weights 45.91 pounds.
Weight = mass x acceleration of gravity (= 9.8)
450/ 9.8 = 45.918367...