# Search results

1. ### Diffraction Grating wavelengths

light wavelengths of 520nm and 630nm passes through a diffraction grating that contains 6000lines/cm. a) sketch a diagram of the image produced from m=0 to m=2. label the order of each fringe.b) calculate the angles for the first and second-order maxima that would appear on the screen. c) What...
2. ### Elementary particle charge

Elementary particle(ANYONE PLZ HELP ME WITH THIS Q) The charge-to mass ratio of the pi^- particle was determined. The charge-to-mas ratio of the electron is 1.76x10^11C/kg. a) predict which particle has a greater mass-the electron, or the particle. b) use the value of the elmentary charge to...
3. ### Application of properties of the light

which of the following colours would you expect to see near the bottom of a soap bubble, red or blue?....i think red is... because it has longer wavelength?
4. ### Application of properties of the light

you find two unlabelled diffraction gratings in your lab. from purchase records, you know that one grating has 500lines/cm, while the other has 10000lines/cm Given the following equipement, describe how you would determine which is the grating with 10 000lines/cm: red laser, detection screen...
5. ### Elementary particle

The charge-to mass ratio of the \pi-particle was determined. The charge-to-mas ratio of the electron is 1.76x10^11C/kg. a) predict which particle has a greater mass-the electron, or the \pi-particle. b) use the value of the elmentary charge to calculate the mass of the \pi-particle in kg...
6. ### Elementary particle

Use the de Broglie equation to explain which is better probe of the contents of the nucleus--a fast-moving electron, or a slow-moving electron. Can someone simplify what the qestion is asking for?
7. ### Elementary particle

Sketch a diagram of the atom H-2, using the appropriate quarks and leptons. Label the particles in your diagram. I don;t knoq how to do this because my book does not have any example of this...:(
8. ### Nuclear reactions

calculate the amount of energy released in the fission of a U-235 nucleus. http://www.dummies.com/WileyCDA/DummiesArticle/Nuclear-Fission-Basics.id-1669.html Given: Masses of the particles: U-235 = 234.9993u n=1.008 Ba=140.883u Kr=91.905u what i did was i used delta E=mc^2, where m is...
9. ### Anyone Taking Grade 12 Physics Through Ilc Or Has Taken In Past?help Needed

Anyone Taking Grade 12 Physics Through Ilc Or Has Taken In Past??help Needed Anyone taking grade 12 physics through ilc?. Need help understanding keyquestions that i got wrong. My exam is coming up.:(...
10. ### Early Quantum mechanics

describe one way in which orbits and orbitals are similar, and two ways in which they differ.
11. ### Nuclear reactions and their applications

Fission is a process in which a nucleus splits into two parts that are roughly the same size of the original nucleus. Tn fusion, two nuclei fuse, or combine, to form one nucleus. These reactions seem to be opposite to each other and yet both release large amounts of energy. Explain why this is...
12. ### Specialy theory of relativity

use the equation m=mo/sqrt(1-v^2/c^2) to show that travelling at the speed of light or beyond is impossible.
13. ### Specialy theory of relativity

what effect would increasing the speed of the spacecraft have on the astronaut's pulse as measured by the astronaut and by the earth observer? why. I think in both measurements, an increased pulse rate will be found?..
14. ### The nature of light

two closely spaced slits are cut into a piece of cardboard. A green light is used to illuminate the slits. a) what would be observed on a screen placed L, meters behind the cardboard? does the observation you described in a) support the wave theory or the particle theory of light? justify your...
15. ### The nature of light (can someone check my answer please)

1. Homework Statement A single slit is illuminated with a helium-neon laser whose wavelength is 633 nm. If the slit width is 2.2 x 10 e-5 m, calculate the position of the third maximum in degrees 2. Homework Equations Sin Theta(m) = (m + 0.5) Lambda/w 3. The Attempt at a Solution...
16. ### Specialy theory of relativity

a 30-year old female astronaut leaves her newborn child on Earth and goes on a round-trip voyage to a star that is 40light-years away in a spaceship travelling at 0.90c. what will be the ages of the astronaut and her son when she returns?
17. ### Work done to move a charge

a test charge of +1.0x10^-6C is 40cm from a charged sphere of 3.2x10^-3C. A) how much work was required to move it therer from a point 1.0x10^2m away from the sphere? b) how many electrons were gained or lost from the test object to creat the charge?. I tried but i do not get the right answer:(...
18. ### Diffraction Grating

light wavelengths of 520nm and 630nm passes through a diffraction grating that contains 6000lines/cm. a) sketch a diagram of the image produced from m=0 to m=2. label the order of each fringe.b) calculate the angles for the first and second-order maxima that would appear on the screen. c) What...