Homework Statement
difference between convex lens formula and convex mirror formula
The Attempt at a Solution
for convex mirror you make focal point negative and use the 1/f = 1/do + 1/di
but for convex lens do you do the same?
you don't make the f negative i think am i...
Homework Statement
so if the original object is 4.6 cm tall located at x = 0 and it's a concave mirror
distance from C to the object is 16 cm and Radius of the mirror is 12 cm
The Attempt at a Solution
to find the position of x image
i got 9.6 cm
then for magnification i...
Homework Statement
Electric and magnetic fields in many materials can be analyzed using the same relationships as for fields in vacuum, only substituting relative values of the permittivity and the permeability, ε = κε0 and μ = κmμ0, for their vacuum values, where κ is the dielectric...
Homework Statement
Two polarizers are out of alignment by 30°. If light of intensity 3.86 W/m2 and initially polarized halfway between the polarizing angles of the two filters passes through the two filters, what is the intensity of the transmitted light?
The Attempt at a Solution
Use...
so
40 * .15 * 0.3 X (0.055x + 0.210z)
using the cross product i get (0.3 * .21, 0 , -.3*.055)
if i add them i get 0.0465
and 40 * .15 * .0465 = .279 N
is this right?
F = ILB
yeah but B is in x and z direction so do i just do
0.15 A * 0.3 M * (0.055T x + 0.210T z)
and then do i square x and z then rad it? i tried that but it's not right
hey Gneli
could you help me with this problem? i just need a place to start and some guidance
thank you
https://www.physicsforums.com/showthread.php?p=3419623#post3419623
Homework Statement
A coil of wire consisting of 40 rectangular loops, with width 16 cm and height 30 cm, is placed in a constant magnetic field given by
B = 0.055Tx + 0.210T.z
The coil is hinged to a fixed thin rod along the y-axis (along segment da in the figure) and is originally located in...
Homework Statement
A cube of gold (resistivity ?R = 2.44 10-8 O m, density ?D = 1.93 104 kg / m3, and specific heat c = 129 J / kg °C) that is 3.5 mm on a side is connected across the terminals of a 40-µF capacitor that initially has a potential difference of 340.0 V between its plates...
Homework Statement
A square ammeter has sides of length = 8.4 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. When the ammeter is clamped around a wire carrying a DC current, as shown in the figure, the average value of the magnetic field measured...