how does a train stay on the tracks?

how does a train stay on the tracks?
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1 Answer

Answer :

Gravity.
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Last Answer : Here in the US there are reasonable building codes the reflect the allowable set backs for all sorts of conditions including rail lines. Other countries are less strict if strict at all.

Walking home one day, you take a short cut along the train tracks. The tracks cross a narrow bridge over a deep gorge. At the point you are 3/8 of the way across the bridge, you hear the train whistle somewhere behind you. You charge across the bridge, and jump off the track as the train is about to run you down. As it happens, if you had gone the other way, you would have reached safety just before being run over as well. If you can run ten miles per hour, how fast is the train moving? -Riddles

Description : Walking home one day, you take a short cut along the train tracks. The tracks cross a narrow bridge over a deep gorge. At the point you are 3/8 of the way across the bridge, you hear the train whistle ... run over as well. If you can run ten miles per hour, how fast is the train moving? -Riddles

Last Answer : The train is moving at 40 miles per hour. Imagine that a friend is walking with you. When the train whistle blows, you head away from the train, he heads toward it. When he reaches safety, you ... the bridge in the time you cross the remaining 1/4, the train must be moving four times your speed.

what- A road is perpendicular to the train tracks at the railroad crossing shown.What is the value of x?

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Last Answer : 40

which of these words best describes train tracks?

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Last Answer : parallel lines

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On a very hot summer day, railroad tracks can buckle, causing train delays and derailments. Select the best reason below for the buckling?

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Last Answer : The metal undergoes thermal expansion.

Railway tracks are banked on curves so that (a) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (b) Frictional force can be avoided between the tracks and wheels (c) Necessary centripetal force may be obtained from the horizontal component of the weight of the train (d) The train may not fly off in the opposite direction

Description : Railway tracks are banked on curves so that (a) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (b) Frictional force can be avoided between the tracks ... of the weight of the train (d) The train may not fly off in the opposite direction

Last Answer : Ans:(c)

Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Description : Railway tracks are banked on curves so that : (1) the train may not fall down inwards. (2) the weight of the train may be reduced. (3) necessary centripetal force may be obtained from the ... normal reaction due to track. (4) no frictional force may be produced between the wheels and the track.

Last Answer : (3) necessary centripetal force may be obtained from the horizontal component of the normal reaction due to track. Explanation: A vehicle moving at a fast speed on a straight rail/ road has ... it experiences an additional force, termed as centripetal force, acting towards the centre of the circle.

A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to – (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : (1) avoid the tracks being distorted due to seasonal temperature variation Explanation: A small gap is left at the joints of rails in a railway track to provide space for the expansion of rail pieces when the temperature rises during summer.

Railway tracks are banked on curves so that – (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3)Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

Description : Railway tracks are banked on curves so that - (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Last Answer : (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train

Two trains 240m and 170m in length are running towards each other on parallel tracks. One train has a speed of 51kmph and the other has a speed of 45kmph. In what time after the meet first will they be clear of each other? a) 6.714s b) 12.2 s c) 15.375s d) 16s

Description : Two trains 240m and 170m in length are running towards each other on parallel tracks. One train has a speed of 51kmph and the other has a speed of 45kmph. In what time after the meet first will they be clear of each other? a) 6.714s b) 12.2 s c) 15.375s d) 16s

Last Answer : c) 15.375s

A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Description : A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Last Answer : avoid the tracks being distorted due to seasonal temperature variation

Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the tracks and the wheels of the train (3) Necessary centripetal force may be obtained from the horizontal component of the weight of the train (4) The train may not fall down inwards

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Last Answer : Necessary centripetal force may be obtained from the horizontal component of the weight of the train

Two passenger trains are running in the same direction on parallel tracks at 210km/hr and 150km/hr respectively. The faster train passes a man 81 sec faster than the slower train. Find the length of the faster train. A) 1250m B) 1150m C) 1350m D) 1450m

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I'm in Kentucky, with 2 bowls of chili. I stay there for 3 nights. I take a train to Georgia and backpeddle to Kansas. Where am I? -Riddles

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A person is on the subway tracks injured/dying what should the onlookers do?

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Last Answer : Both Chrome and Firefox have extensions that will allow you to do this. I don’t have experience with them, but the reviews look promising.

Can you help me find some settings that would help me mix tracks to have a vintage warm feel of the 1960s?

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Last Answer : answer:Settings on what? Your best bet for that vintage sound is a nice vintage tube amp. However, these are somewhat hard to come by. There are some pretty darned good amp emulators on ... in. There vintage finder tube amp emulator is pretty darned accurate right down to that characteristic buzz.

Why won't 8 tracks let me replay the mix?

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Last Answer : answer:What happens when you don’t refresh the page? Is there a repeat button on the player?

Have CD's become the new 8 Tracks?

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Last Answer : I still have a few 8 tracks (no player), so bite me old man. :)

Can you trim audio tracks in garage band?

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Last Answer : Have you tried clicking the bottom right or bottom left corners and dragging it horizontally across the arrange window? If I remember correctly, your cursor changes to an arrow or something similar.

Can I break a podcast up into separate tracks in iTunes?

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Last Answer : Very easy to do with Audacity

Is the use of default sound tracks provided with the iPhoto slidshow application considered fair use?

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Last Answer : answer:From Apple's iLife Software License Agreement (pdf link): You may use the Apple ant third party audio content on a royalty-free basis, to create your own original soundtracks for ... just information about copyright from someone who did reasonably well in his copyright class in law school.

Legend of zelda spirit tracks?

Description : Legend of zelda spirit tracks?

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Can people listen to my scrobbled tracks on last.fm?

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What would stop you in your tracks?

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Getting rid of duplicate tracks in your music library?

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How many tracks are downloaded on the iTunes store every second?

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My iPhone 3G S's iPod section is repeating tracks. How do I turn off?

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How to number tracks (in iTunes)?

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