Recent content by kachilous

Homework Statement A certain crystal has a set of planes 0.33 nm apart. A beam of neutrons strikes the crystal at normal incidence and the first maximum of the diffraction pattern occurs at ∅= 38°. What is the de Broglie wavelength of the neutrons? Homework Equations nλ = Dsin∅ where D...

Homework Statement In a particluar x-ray tube, an electron approaches the target moving at 2.35 108 m/s. It slows down on being deflected by a nucleus of the target, emitting a photon of energy 40 keV. Ignoring the nuclear recoil, but not relativity, compute the final speed of the electron...

I figured I could use x = γ(x' + vt') {The lorentz equation for distance} And then since I am given the spatial separation Δx, Δx = γ(xo' + vt2' - γ(xo' + vt1' Then I could solve for v, but that still did not work

Homework Statement An observer in frame S standing at the origin observes two flashes of colored light separated spatially by Δx = 2300 m. A blue flash occurs first, followed by a red flash 5 µs later. An observer in S ' moving along the x-axis at speed v relative to S also observes the...

I figured it out. Thank you!

I'm still confused. Here are the three steps you mentioned. (1) Increase the temperature of the ice: Q = mice*cice*(Tf-Tice,initial) (2) Melt the ice: Q = mice*Lfusion,water (3) Increase temperature of water: Q = mwater,initial*cwater*(Twater,initial*Tf) And then the equation would be: (1) +...

Homework Statement A 25 g glass tumbler contains 350 mL of water at 24°C. If four 20 g ice cubes each at a temperature of -3°C are dropped into the tumbler, what is the final temperature of the drink? Neglect thermal conduction between the tumbler and the room. Homework Equations Q = mcT Q =...

What do you mean by time step analysis?

I have created a program that simulates an object being thrown off a 50 m building. Now I would like to implement collision detection. What equations would I need to accomplish this? I am taking Physics right now, so my Physics is a little rusty. I know I will have to find the time of...

It is a ball that has elasticity. I expect the ball to bounce upon impact with the ground. The ground is a flat surface that is stationary

I have created a very simple numerical simulation that models an object being thrown off a building at some angle, and when the object hits the ground, the simulation stops. Now I want to add in collision detection. How would I go about doing this? What would be the equations needed to compute...

because I took the complement of the function F. So I'm reducing F'

My apologies. The function should actually be F'(A,B,C,D) = BC + (A + (CD)')

on the second step, I did De Morgans

I have the following function to be reduced/simplified. F(A,B,C,D) = BC + (A + C'D') where ' denotes the complement Here's my solution: = BC + (A + C'D')' = BC + (A + (C+D) = BC + (A + C + D) = BC + C + A + D = C(B + 1) + A + D = C*1 + A + D = C + A + D Is this correct?