Recent content by figs

A singly ionized helium atom (He+) has only one electron in orbit about the nucleus. What is the radius of the ion when it is in Bohr orbit number 3.0? I used r=n^2*ao, but this equation looks like its only for hydrogen atoms. I'm just a bit confused because my books seemed to give the same...

yes, that's correct.

How can I determine the speed of light from a glass plate? I have the the numbers that I compared the average experimental value of the index of refraction with the general range of the index of refraction of glass.

I have input rays into a glass plate and output rays for this glass plate also. How can I prove that they are indeed parallel. I'm thinking all I need to do is extend the inout and output rays, and indicate that they are both 180 deg. Visually, they will appear parallel anyways.

Prove mathematically that when a plane mirror is rotated an angle theta about an axis through its center, the angle of deflection of a light is equal to 2theta. How am i to show draw this out? I have already drawn my points and lined up my angles with and without the mirror rotated. I don't know...

i'm learning about oscilloscopes, and i don't understand why this Lissajous figure can be go from a straight line to a circle. Also, this sweep time/div control setting, i dont understand why the wave cycles vary with this control setting.

im still in the dark about this vertical horizontal component do i need to find some magnitude before i find the flux?

(change in A/change in time) = ((m)(m)) / (NBcos(theta)) It's not clear to me what I did wrong with this. okay, nevermind. V=B(change in area/change in time) is there some special thing I am overlooking because plug and chugging into equations I know arent helping me understand anything.

A constant magnetic field passes through a single rectangular loop whose dimensions are 0.348 m x 0.593 m. The magnetic field has a magnitude of 2.26 T and is inclined at an angle of 66.0° with respect to the normal to the plane of the loop. (a) If the magnetic field decreases to zero in a time...

A house has a floor area of 200 m^2 and an outside wall that has an area of 50.0 m^2. The Earth's magnetic field here has a horizontal component of 2.58×10^-5 T that points due north and a vertical component of 4.14×10^-5 T that points straight down, toward the earth. a)Determine the magnetic...

oops, sorry!

The x, y, and z components of a magnetic field are Bx=0.193 T, By=0.233 T, and Bz=0.263 T. A 29.5 cm wire is oriented along the z axis and carries a current of 4.01 A. What is the magnitude of the magnetic force that acts on this wire? how do i calc my B cuz i know f=4.01A/(0.295m)(?T)(sin90)

that's wut i thought t=(1)(13.5A)(0.014m2)(0.124)(sin90) t=0.023 N*m i did something wrong somewhere

A rectangular current loop (L=0.40 m and W=0.19 m) is located near a long, straight wire (d=0.10) that carries a current of 10 A (see the drawing). The current in the loop is 20 A. The Determine the magnitude of the net magnetic force that acts on the loop. i was chugging my B from the wire...

how am i to fig out N? t=NIABsin90