2.486 L is equal to:
2 answers:
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The Coulomb's force acting between two charges is
where
is the Coulomb's constant, q1 and q2 the two charges, and r the distance between them.
Using
, we can find the distance between the two charges when the force is F=19.2 N:
where
Using
Answer:
9000RPM
Explanation:
"Angular velocity" is directly related to kinetic energy, that is, the Kinetic energy equation would allow an approximation to the resolution investigated in the problem.
The equation for KE is given by:
Now, starting from there towards the <em>Angular equation of kinetic energy</em>, the moment of inertia (i) is used instead of mass (m), and angular velocity (w) instead of linear velocity (V)
That's how we get
calculating the inertia for a solid cylindrical disk, of
m = 400kg
r = 1.2 / 2 = 0.6m
We understand that the total kinetic energy is 3.2 * 10 ^ 7J, like this:
Thus,
943 rad / s ≈ 9000 rpm
Answer:
Positive Z direction (out of screen)
Explanation:
Magnetic force is given by . A quick way to gauge the components is to put your left middle finger on the direction of the current, your index on the direction of the magnetic field, and the thumb gives you the answer you want.