To convert atomic mass to kg, I do
63.5 x 1.66^10-27 = 1.0541 x 10^-25kg
Then
8920 kgm^-3 / 1.0541 x 10^-25kg = 8.462195238 x10^28m^-3
but it should be around 10^9 says wikepedia?
Homework Statement
In attachment
The Attempt at a Solution
I break into partial fractions, then get stuck. Please help me in layman terms
f(z) = -1/3[3(z+1)] + 4/3[z+4]
Now I am stuck.
Homework Statement
In attachment "question.jpeg"
i. I can do
ii. I need some help
iii. I need some help
The Attempt at a Solution
i. \int_{-1}^{1} \Psi_{1} \Psi_{2} dx = 0
ii. ?
iii. ?
Thanks for you response
I am new to the subject so excuse my ignorance.
So the violation of laws that they are referring to are conservation of lepton no, baryon no, Charge (which are first order?). Where as weak and strong are second order?
I was given the following question
Which of the reactions on the right are allowed by first-order processes? For those which are not allowed, state one conservation law which is violated.
What is a first order process in particle physics? i.e what does first order refer to? What would be...
Say I have the function
f(x) = x^5ln(x)
I can differentiate f(x) say 6 times and I'm left with just ln(x). But this is not a proof!
How do I go about proving it?
Could I use the Taylor expansion?
Please help me understand the Gerchberg–Saxton algorithm
what I comprehended so far
1) A source is shone on an object and produces a diffraction pattern in the diffraction plane. We do not know the dimensions of the object.
2) We are unable to calculate the phase of the of the wave, due...
Correct, it was a mistake however can be rationalized, with the fact that there is heat "caused by" the compression and extension of the spring.
But the point is was, where does the temperature rise come from?
Is your ans that the average KE is increased of the spring particles?
For example
If I extend and compress a spring numerous times the spring will increase in temperature.
Where does the rise in temperature come from?
The atoms that "make up" the spring from an atomistic point where does this rise in temperature come from?
original question
Assume that the density of dark matter near the Earth is 0.3 GeV / cm3 and that the dark matter particle has a mass of 100 GeV and a velocity of 200 km/s. If the dark matter-nucleon cross section is 10^-44cm2 calculate how many events you would expect to see every year in a...