Question

Find the total electric potential at the origin for charges X at (2.0, X/5) m; -X at (3.0, -2.0) m, and 2X at (2.5, 2.0) m.

X=42

5. A solenoid has 50 turns in X cm. What current is needed to produce a magnetic field of 25 tesla inside the solenoid? 6. A new material has an index of refraction of X. What is the velocity of light through this material? What's the minimum angle at which will light will be totally internally reflected when attempting to pass from the material to air?

X=42 for 5,6,8,&9 as well.

Answer 1

B = Mo NI B: 25T, Mo = 410X100? N= 50, x= L-3042 cm I = BYL - 25 x 42 cm = 1.67X10A MN 280 x 40 x 107 42x152 aXLEXIO 7 T 167X10 A Scanned with CamScanner

q.. 16. Ma 42 c-velocity of light in vacum Ju – refractive index of materia acum - so velocity of light through material va e 1. M = e ANG 30 001xco*m/s 8. According to shell's law no sing = na Sin Oz Here Op = Oerij Og= 90°, M = 42, nga 4 (air) So sinoc = lx.sin. 90 = 0.02 42 Oce Sin" (0.02) - 1-36 g. fa-am, X= U= 420 By lens formula t= - the - - - - - - to #2 = -047 so v = _~2.1m Since visave image is formed infront of the lens. 5 1 LLLL CScanned with CamScanner

* = 4.2 q 5 423 42 W w 42x 42 = 21 42+42 a = 2:1+10 - 3.1 & 3- 3.1*10 = .36 3.1 to 84 236* 5 = 16 2.3675 &5=1.6+8.4+4 2 = 14.2 Current through 84, 42, and enth 2 23:54 CSScanned with CamScanner