Recent content by wayneinsane

Well, I multiplied my answer by 6.24e12 because 1J = 6.24e12MeV, and I got 2.05, that is still wrong.

I don't have the answer, I have to submit electronically and I am getting it wrong. I'm not sure actually...that was my issue...maybe I am not converting to MeV. Any ideas?

Half Life / Alpha Decay Question -- No IDea Homework Statement A space rock contains 3.20 g of 147 62 Sm and 0.110 g of 143 60 Nd. 147 62 Sm alpha decays to 143 60 Nd with a half-life of 1.06 1011 yr. If the rock originally contained no , how old is it? Homework Equations ...

Homework Statement The particle in a box model is often used to make rough estimates of ground state energies. Suppose that you have a neutron confined to a one-dimensional box of length equal say 1 x 10^-14m. What is the ground state energy of the confined neutron? answer in MeV...

Hmm, this is starting to make sense... I just checked my notes and you are absolutely right. Wo is the resonance frequency... so... since w = 2 pi f, and XL = wL... can I do XL = 2 pi f L which would be XL/2 pi f = L, so 12/4000 which is 3 x 10-3... then, for XC = 1/wC, can I do XC =...

But isn't w the symbol for resonance frequency? and resonance frequency is given in the problem, along with the reactance of capaciatance and inductance...im not sure what other equation I would need..

Homework Statement Three long wires( 1,2 and 3) are coplanar and hang vertically. The distance between wire 1 and 2 is 20 cm. On the left wire 1 carries an upward current of 1.5 A. To the right the wire 2 carries a downward current of 4 A. Wire 3 is located such that, when it carries...

it should be Vt = mgR/B2w2

Homework Statement A conducting rectangular loop of Mass M and resistance R and length l and width w falls from rest into a magnetic field B as shown. During the time interval before the top edge of the loop reaches the field, the loop approaches the terminal speed v T . Show that...

Homework Statement An RLC circuit has a resonance frequency of 2000/pi hertz. When operating at angular frequency w > w0, reactance of inductance is 12 ohms and reactance of capacitance is 8 ohms. Calculate the values of L and C. Homework Equations XL = wL XC = 1/wC The Attempt...

Well... what I've tried to do was find the resistance which is R=E/I and I got 3.8/.2 = 19... then I divided that by 1.10 and got 17.27... someone told me to look up in a tungsten chart the value of the new temperature but the chart gives approximations. I've tried 3 attempts, I have 1 left so...

This Question is due in 2 Hours... Please Help! A common flashlight bulb is rated at 0.200 A and 3.80 V (the values of current and voltage under operating conditions). If the resistance of the bulb's tungsten filament at room temperature (20.0°C) is 1.10 , estimate the temperature of the...

Does anyone know a clear and absolute explanation of how is it that when you flick the light switch on there is an instantaneous show of light?

Two parallel plates are 9.0 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 3.0 × 104 N/C in the region between the plates. What is the time required for an electron, which starts at rest at the upper plate, to reach...