Recent content by EinsteinKillr

I've never consider that a radian is a ratio of a circle. Thanks! that makes a lot more sense.

Homework Statement I'm working a problem concerning centrifugal acceleration and I've stumbled on something I don't quite understand: Homework Equations F=mrω2 where ω=rad/s So the resulting units: kg * m*rad2/s2 The Attempt at a Solution I would expect acceleration...

What Petero is trying to say is that the wavelength does not matter in this particular solution. " It is not numerically important" You are correct in thinking that this problem is true for all lambda.

Consider the single slit experiment. You get a series of minima as a result, right? When you add a second slit, the single slit result doesn't go away. Rather it rules over the double slit phenomenon and makes it its slave. If you do the math, you'll find that the value of theta will coincide...

Remember, that the diffraction pattern for a single slit gives us a series of minimas at quantum points in the pattern. This pattern does not go away when a second slit is introduced into the equation. The minimas produces by the single slit will in fact occur at the same angle as every so many...

good news, you correctly identified the initial velocity in the y direction. don't forget that acceleration in your equation is negative g, because gravity is slowing down the object. Your maximum height will be the moment that v(final) = 0, so... v(final)^2 = v(init)^2 + 2as 0^2 =...

assuming that the frequency of the light being used does not change in or out of the water then the wavelength must change as a result of the differing speeds of light. i.e: frequency = velocity / wavelength (\lambda) so, solving for \lambda, \lambda = v/f. in a vacuum (or near vacuum...

I don't know if this is case in Wind Turbines, but I know in some generators that a flywheel and clutch mechanism is used to regulate rotational speed. The flywheel stores potential energy from the spinning turbine (or motor in the case of the generator) on which a clutch is installed so that...

A weighing machine is measuring the normal force equal and opposite the total force experienced by the object being weighed at the face where the machine and the object meet. Even thought the object may not be moving, it is still experiencing an accelerating force equal to to its mass times...

true, but earthquakes have been known to shift the rotation of the planet. Let's not forget though, that the Earth rotates around the COM of the earth-moon system for the most part.

I would guess that you are indeed actually lighting your led with just one lemon, just not enough that you can detect it with your eyes. The answer to a visible light just might be a capacitor, which will build up potential drawn from the battery until it reaches its total capacitance, and then...

Agreed, air is matter, but he did say he was working in his dorm room, which I suppose has air in it (at least for his sake). As for the lab, I was just curious what relationship there might be between dt and dtheta and if this could be put to any practical use.

Heat could actually be the answer, although statistically hard to predict. I am, of course, assuming that there is air in the room. Heating the air above a region significantly higher or lower than the air adjacent to it would cause a refraction event. Like I said, however, it wouldn't be very...