Recent content by geolohs

Thank you for big help!

but if I take L as 0,25 m, final answer is 34285,664 A/m, sounds huge

Thanks! So I=24V/0,078 ohm =306,122 A Final question - L in H=In/L stands for 3,519m, not 25 cm, right? So the answer is H=306,122 A * 28 /3,519m = 2435,753 A/m

aargh, somehow at the and I get 34285,664 A*mm2/m and this sounds totally wrong :/ How should the units for final answer look like/how big numbers will be?

I tried it with all units but still don`t get the problem. Why calculations for wire area are wrong? I had to stick to mm2, instead of m2 or what?

Could someone check my calculations? Homework Statement Calculate intensity of magnetic field inside of solenoid, who is made from 1mm thick copper wire with 28 twines(n=28). Solenoid is 25 cm long, diameter - 4 cm, and it`s connected to 24V DC voltage. U=24V ; n=28 ; ρ for copper =0,0175...

Thanks!

As I`m from non-english speaking country I may be incorrect in terms but total internal reflection is when (n1 > n2) - than it`s possible for the ray to reflect& refract, unless... unless sinφ1>n2/n1 in this case sin60°>1/1,33 leads us too 0,866>0,751 So the answer ir - there will be no...

99 degrees - this is too wide... So the correct answer is - there will be no refraction? Or it will reflect backward and the answer is 9 degrees? This is confusing

sin for 1,1517 is something like 99 degrees - is this correct answer? I thought that there are some problems with calculations, because in this test it wasn`t compulsory to calculate exact values in degrees

Homework Statement I need to calculate refraction angle of light, if light ray is falling to the surface of aquarium water from the bottom in the angle of 60 degrees, n for water = 1,33 Homework Equations sinφ2=(n1×sinφ1) /n2 The Attempt at a Solution So i get sinφ2=1,33*0,866( meant as...