Answer:
Explanation:
We use Gauss's law which says
Now, for the cylindrical charge distribution the charge enclosed is
where is the volume of the cylinder.
To evaluate Gauss's law, the Gaussian surface we choose is a cylinder concentric with the charged cylinder; therefore, equation becomes
Putting in numerical values
we get:
Answer:
θ = ω0 t + 1/2 ω t^2 = 1/2 α t^2 since it starts from rest
α = (15000 / 60) / 240 = 250 / 240 = 1.04 rev/sec^2
Note that α is in rev/sec^2
T(otal) = 1/2 * 1.04 * 240^2 = 30,000 revolutions
Check:
Average RPM = (15000/2) = 7500 rev/min = 125 / sec
125 / sec * 240 sec = 30,000 rev
Nebulas, because nebulas contain the gas needed to form a star and comets/planets/ asteroids are rocks not gas
there here is your answer to your question
Uncertainty in measurements and calculations means difference between actual and measured data. We can say that all measurements have some degree of uncertainty. ... Systematic error (because of error in measuring instrument) 2. Random error (human errors such as- delay in starting, delay in stopping).