From 6cf6c1977c1cda2a7c123368630cc7703ddc5172 Mon Sep 17 00:00:00 2001
From: Holden Rohrer <hr@hrhr.dev>
Date: Thu, 11 Nov 2021 18:13:00 -0500
Subject: more physics and linear homeworks

---
 jarrio/week11.bc | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 jarrio/week11.bc

(limited to 'jarrio/week11.bc')

diff --git a/jarrio/week11.bc b/jarrio/week11.bc
new file mode 100644
index 0000000..da49df1
--- /dev/null
+++ b/jarrio/week11.bc
@@ -0,0 +1,67 @@
+scale = 30
+qel = 1.602*10^(-19) # elementary charge in Coulombs
+pi = 4*a(1)
+mu0 = 4*pi * 10^(-7)
+
+print "Weekly Practice 11\n"
+
+vz = 4.8*10^7 # m/s
+print "nonzero term on the first one\n"
+-mu0/(4*pi) * qel*vz*.02/.02^3
+
+print "nonzero term on the third one\n"
+mu0/(4*pi) * qel*vz*.02/sqrt(.02^2+.02^2)^3
+
+print "#2\n"
+vy = 2*10^7
+print mu0/(4*pi) * qel*vy*.02/sqrt(.02^2+.02^2)^3
+print "k\n"
+
+print "#3 (T)\n"
+#params
+i = 4.8 # A
+d = 1.9 # cm
+
+d = d/100 # m
+r = d/2 # m
+loopmag = mu0/(4*pi) * i*(pi*d)/r^2
+wiremag = mu0*i/(2*pi*r)
+loopmag + wiremag
+
+print "#4 (T, pos = into screen, neg = out of screen)\n"
+#params
+i = 4 # A
+r1 = .9 # cm
+r2 = 1.8 # cm
+
+r1 = r1/100 # m
+r2 = r2/100 # m
+
+# mu0/4pi Idl/r1^2
+(mu0 * i * (pi*r1)/r1^2 - mu0 * i * (pi*r2)/r2^2)/(4*pi)
+
+print "#5\n"
+#params
+l = 30 # cm
+mf = 4.8 # mT
+diamg18 = 1.02 # mm
+ig18 = 6 # A
+diamg26 = .41 # mm
+ig26 = 1 # A
+
+# B*diamg18 = mu0*I
+print "To reach necessary magnetic field with #26, current is\n"
+mf*diamg26/mu0/10^6
+print "Therefore, we should use #18 with current (A)\n"
+mf*diamg18/mu0/10^6
+
+print "#7\n"
+#params
+l = 1.3 # m
+mf = 1.4 # mT
+i = 1.5 # A
+
+# Biot-Savart: mu0/4pi * idl/r^2 = B
+# mu0/4pi * i * l / B = r^2
+print "Diameter is (m)\n"
+sqrt(mu0/(4*pi) * i * l / mf * 1000)*2
-- 
cgit