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
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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...
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...
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...