Top answers

In a particle accelerator, you accelerate an electron. Afterwards, you measure it's energy to be 350 keV. Tell my why you can't find the speed from this energy using your knowledge of classical mechanics.

In order to see what the problem is, I will attempt to find this speed. 350keV=5.61 10 -14 J E k =1/2 * m v 2 => v=sqrt(2E k /m) By plugging in numbers, we find that the velocity of the electron, v=3.51 1...
CP
Answered by Cezar P. • Physics tutor
2570 Views

Find the integrating factor of the following first order ODE: dx/dt = -2tx +t.

Firstly rearrange the differential equation to fit the form dx/dt +P(t)x = Q(t). The integrating factor is then found by using the formula: u = EXP(INTG(P(t))). We know that P(t) = 2t and so by integrating w...
AT
8604 Views

What is the difference between DFS and BFS? Where can I apply each?

DFS, or Depth First Search traverses a graph - which is any set of interconnected nodes 'depth first'. It tries to go all the way to the end, and if it fails returns back to the last intersection that it did...
TD
Answered by Tutor86199 D. • Python tutor
4832 Views

Using your knowledge of complex numbers, such as De Moivre's and Euler's formulae, verify the trigonometric identities for the double angle.

de Moivre's: (cos(x)+isin(x)) n =cos(nx)+isin(nx) set n=2 (cos(x)+isin(x)) 2 =cos 2 (x)+2isin(x)cos(x)-sin 2 (x), which, according to de Moivre's cos 2 (x)+2isin(x)cos(x)-sin 2 (x)=cos(2x)+isin(2x) We notice...
CP
5010 Views

What is the mathematical relationship between the frequencies of musical notes that we perceive identical, but at different octaves?

Humans have a logarithmic perception of the majority of uncountable and some countable things. A 0 , which is percieved as the basic note, has a frequency of 27.50 Hz. A 1 =55 Hz, and A 2 =110 Hz. You might ...
CP
Answered by Cezar P. • Physics tutor
3784 Views