Question

In: Advanced Math

On a particularly strange railway line, there is just one infinitely long track, so overtaking is...

On a particularly strange railway line, there is just one infinitely long track, so overtaking
is impossible. Any time a train catches up to the one in front of it, they link up to form a
single train moving at the speed of the slower train. At first, there are three equally spaced
trains, each moving at a different speed. After all the linking that will happen has happened,
how many trains are there? What would have happened if the three equally spaced trains
had started in a different order, but each train kept its same starting speed? On average
(where we are averaging over all possible orderings of the three trains), how many trains will there be after a long time has elapsed? What if at the start there are 4 trains (all moving
at different speeds)? Or 5? Or n? (Assume the Earth is flat and extends infinitely far in all
directions.)

Solutions

Expert Solution


Related Solutions

3. If you halve the distance from an "infinitely long" line of charge, the magnitude of...
3. If you halve the distance from an "infinitely long" line of charge, the magnitude of the electric field... a, remain unchanged b. decreases by a factor of two c. decreases by a factor of four d. doubles. e. quadruples 4. Doubling the distance away from an infinite plane of charge causes the magnitude of the electric field to a. decreases by a factor of four b. double c. quadruple d. decrease by a factor of two e. remain unchanged
An infinitely long line of charge has a linear charge density of 5.50×10−12 C/m . A...
An infinitely long line of charge has a linear charge density of 5.50×10−12 C/m . A proton is at distance 15.0 cm from the line and is moving directly toward the line with speed 1100 m/s . How close does the proton get to the line of charge? Express your answer in meters.
An infinitely long line of charge has linear charge density 5.00×10−12 C/m . A proton (mass...
An infinitely long line of charge has linear charge density 5.00×10−12 C/m . A proton (mass 1.67×10−27 kg , charge e) is 14.5 cm from the line and moving directly toward the line at 2500 m/s . Calculate the proton’s initial kinetic energy. How close does the proton get to the line of charge? Please show how you got the answer so that I understand. :)
Consider two infinitely long wires running parallel to the x axis, one along (x, a, 0)...
Consider two infinitely long wires running parallel to the x axis, one along (x, a, 0) the other along (x, −a, 0), for −∞ < x < ∞ and 2a is the separation between the two wires. They carry opposite uniform charge densities +λ and −λ respectively. (a) Find the potential at any point (x, y, z) using the origin at your reference point so that V (0) = 0. (b) Show that the equipotential surfaces are (generically) circular cylinders....
(1) An air track that is 2 meters long is raised by 2 cm on one...
(1) An air track that is 2 meters long is raised by 2 cm on one end. What vertical distance does an air cart move if the air cart moves from the 1 meter mark to the 2 meter mark? 1 cm (2) If the above air cart starts from rest, what would you expect its velocity to be 0.5 meters along the air track? Use the equations of conservation of energy. Assume the air track is frictionless. (3) Is...
1.12 [2pt] Consider one infinitely long straight wire with a uniform charge density of 1 C/m....
1.12 [2pt] Consider one infinitely long straight wire with a uniform charge density of 1 C/m. Sketch the electric field around the wire 1.12 ANSWER 1.13 [2pt] In problem 1.12, calculate the magnitude of electric field at a distance R from the wire. How is it different (if any) from the field of a point charge? 1.13 ANSWER 1.14 [2pt] Consider two infinite wires 1 m apart with a uniform charge density per unit length 1 C/m. Calculate the force...
3) A hydrogen atom contains just one electron, so it can produce only one wavelength of...
3) A hydrogen atom contains just one electron, so it can produce only one wavelength of light (and therefore only one color of light) at a time. Why then do we see many different colors of light simultaneously when we observe the emission spectrum of hydrogen?
Please write your work neatly so I could understand it 3. A very long, straight line...
Please write your work neatly so I could understand it 3. A very long, straight line of charge runs parallel to a very large, planar sheet of charge. The 2 charge density of the line is -2.0 nC/cm and that of the sheet is +0.50 nC/cm^2 . The distance between the line and the sheet is 8.0 cm. An electron is released at rest, at a location that is halfway between the line and the sheet. Use conservation of energy...
A soft drink bottling company just ran a long line of 12-ounce soft drink cans filled...
A soft drink bottling company just ran a long line of 12-ounce soft drink cans filled with cola. A sample of 32 cans is selected by inspectors looking for non-conforming items. Among the things the inspectors look for are paint defects on the can, improper seal, incorrect volume, leaking contents, incorrect mixture of carbonation and syrup in the soft drink, and out-of-spec syrup mixture. The results of this inspection are given here. Construct a c chart from the data. Can...
-Do you have an ERP system? If so, which one? How long did it take to...
-Do you have an ERP system? If so, which one? How long did it take to implement it? -What kind of inventory control techniques do you use? -Do you employ ABC technique for inventory management? -Do you utilize RFID systems?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT