Recent content by Sevenheartz

Oh... I see. I get it now. Much more simple than I thought it was. Thanks.

Thanks for helping out as well. What I mean is in general, how do you know what n is? So in this example, how did you know n = 1? Sorry if it's obvious, lol.

How do you know which interger to use for n?

What do you mean by an integral number of wavelengths? Err.. I'm confused. How exactly do you tell the thickness of the film in terms of \lambda, knowing things like in the question above?

Homework Statement A transparent oil with an index of refraction of 1.25 spills on the surface of the water (n=1.33), producing a maximum of reflection with incident orange light (\lambda = 602nm in air.) Determine the lowest possible thickness (in nm) of the oil slick.Homework Equations...

Ah, I got it now. Thanks for the help Kurdt and LowlyPion.

Oh, I see. But I'm still confused by "in terms of Earth's radius," what exactly do they mean by that? By the way, I used v2 = GM /r to find that r = 5.58 x 1010 Would that be the radius from the Earth's centre to the satellite? Thanks for your help

Homework Statement A satellite in a circular orbit around Earth has a speed of 7.15x103 m/s. Determine, in terms of Earth's radius (radius of earth= 6.38 x106m): a) the distance the satellite is from Earth's centre b) the altitiude of the satellite Homework Equations FG = GMm / r2...

I think I understand. So if it went from East velocity to North, the direction of the acceleration would be West of North? Also, just to be sure (this is in terms of the question I posted in the beginning)... the resultant vector would have a direction of East of South right? Thanks for your...

Homework Statement A car with a velocity of 25 m/s [E] changes its velocity to 25 m/s [S] in 15s. Calculate the car's average acceleration.Homework Equations a = v/t The Attempt at a Solution The problem I'm having with this question (And actually, vectors in general) is the direction in the...