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

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

1 Answer

Answer :

The metal undergoes thermal expansion.
by
selected by

Related questions

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

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

Last Answer : 40

Why do cars stall on railroad tracks?

Description : Why do cars stall on railroad tracks?

Last Answer : If they don’t stall on railroad tracks, there’s no drama or interest in the stalling. I suspect that cars stall equally everywhere, but you only hear about the ones that interested someone because they were on railroad tracks.

What word means a framework built to carry railroad tracks?

Description : What word means a framework built to carry railroad tracks?

Last Answer : Need answer

When should drivers try to avoid using residential streets as shortcuts when traffic is causing delays?

Description : When should drivers try to avoid using residential streets as shortcuts when traffic is causing delays?

Last Answer : People like to minimize traffic on their residential streets because it makes it safer for their children, and quieter for their enjoyment of their property.

Not far outside the town of Pottsville, a railroad track runs through a tunnel in a hillside. There’s only one track, and the tunnel is wide enough for only one train. But one day, two trains went into the tunnel from opposite directions. Each train entered the tunnel exactly at eight o’clock. Three minutes later, each train came out at the opposite ends of the tunnel. Yet, there was no collision! How was this possible? -Riddles

Description : Not far outside the town of Pottsville, a railroad track runs through a tunnel in a hillside. There's only one track, and the tunnel is wide enough for only one train. But one day, two trains ... out at the opposite ends of the tunnel. Yet, there was no collision! How was this possible? -Riddles

Last Answer : One train comes at 8am and the other train came at 8pm.

Lowest level of staff/supervisor competent for passing of first train after buckling in LWR/CWR. a. PWI* b. PWS c. Gangmate d. Keyman

Description : Lowest level of staff/supervisor competent for passing of first train after buckling in LWR/CWR. a. PWI* b. PWS c. Gangmate d. Keyman

Last Answer : a. PWI*

In delhi fog delays flights in winter why does it not happen in summer?

Description : In delhi fog delays flights in winter why does it not happen in summer?

Last Answer : Need answer

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.

Is there a way to look up railroad crossing train times?

Description : Is there a way to look up railroad crossing train times?

Last Answer : My railroad is Amtrak and can sometimes run 45 minutes to and hour late. Good luck with avoiding crossing by calculating when they’ll be at a crossing.

How close is living too close to train tracks?

Description : How close is living too close to train tracks?

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.

how does a train stay on the tracks?

Description : how does a train stay on the tracks?

Last Answer : Gravity.

which of these words best describes train tracks?

Description : which of these words best describes train tracks?

Last Answer : parallel lines

Why do train sets fall of the tracks?

Description : Why do train sets fall of the tracks?

Last Answer : When an electric train set falls off the tracks, it is usually because the manufacturer did not build the pieces accordingly. It can also be because the track assembler didn't put the track tight enough ... the electric train has too much power and builds up too much momentum to stay on the railing.

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

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 : 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

Description : 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

Last Answer : ANSWER: C  Explanation:  Speed of 1st train = 210km/hr  Speed of 2nd train = 150km/hr  Here the two passenger trains are running in same direction, so  Relative speed = (210 - 150)km/hr  = 60km ... faster train = relative speed * time taken by train to pass  = 50/3 * 81  = 1350m

Rankine Gordon formula for buckling is valid for (A) Long column (B) Short column (C) Short and long column (D) Very long column

Description : Rankine Gordon formula for buckling is valid for (A) Long column (B) Short column (C) Short and long column (D) Very long column

Last Answer : (C) Short and long column

Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to (A) Very long columns (B) Long columns (C) Short columns (D) Intermediate columns

Description : Rankine-Golden formula accounts for direct as well as buckling stress and is applicable to (A) Very long columns (B) Long columns (C) Short columns (D) Intermediate columns

Last Answer : (D) Intermediate columns

Critical path method (A) Is an improvement upon bar chart method (B) Provides a realistic approach to daily problems (C) Avoids delays which are very common in bar charts (D) All the above

Description : Critical path method (A) Is an improvement upon bar chart method (B) Provides a realistic approach to daily problems (C) Avoids delays which are very common in bar charts (D) All the above

Last Answer : (D) All the above

When a turtle retracts its head into its shell, does the spine buckle or contract?

Description : When a turtle retracts its head into its shell, does the spine buckle or contract?

Last Answer : This is a cool question. I think if you look at cross section of a turtle’s skeletal structure, it becomes easier to understand what happens inside the shell when the turtle retracts its head. It would appear to be less of a retraction, and more of a reversed nodding motion.

Where can I find a nice pendant for a pearl necklace? Do I need a special kind of buckle?

Description : Where can I find a nice pendant for a pearl necklace? Do I need a special kind of buckle?

Last Answer : answer:

running water at the back of the buckle

Description : I'm running water from the buckle at the back but it didn't leak much, please thank you

Last Answer : It could be a ruptured hose. Try moving the washing machine and see if there is a hole in the hose. If so, use some staples, preferably high-quality steel or classic cable ties. the glue doesn't help.

Where can I get a custom-made belt buckle?

Description : Where can I get a custom-made belt buckle?

Last Answer : You can get a custom-made belt buckle online at many websites. One such website I found is http://www.beltbuckleshop.com/page/belt/CTGY/photo.

A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the (a) axis of load (b) perpendicular to the axis of load (c) maximum moment of inertia (d) minimum moment of inertia

Description : A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the (a) axis of load (b) perpendicular to the axis of load (c) maximum moment of inertia (d) minimum moment of inertia

Last Answer : (d) minimum moment of inertia

A column has moment of inertia about X-X and Y-Y axis as follows IXX=4234.4 mm4 IYY=236.3 mm4 This column will buckle about (a) X-X axis (b) Y-Y axis (c) It depends upon the applied load (d) None of these

Description : A column has moment of inertia about X-X and Y-Y axis as follows IXX=4234.4 mm4 IYY=236.3 mm4 This column will buckle about (a) X-X axis (b) Y-Y axis (c) It depends upon the applied load (d) None of these

Last Answer : (b) Y-Y axis

Compression members always tend to buckle in the direction of (a) Vertical axis (b) Horizontal axis (c) Minimum cross-section (d) Least radius of gyration

Description : Compression members always tend to buckle in the direction of (a) Vertical axis (b) Horizontal axis (c) Minimum cross-section (d) Least radius of gyration

Last Answer : (d) Least radius of gyration

In 1209, on a hot summer day there was a man who was ordered to be executed by king. The king was a nice king though, and he said that if the man could prove himself wise, he would let him go. The king filled a room with fake flowers, and only put in one real flower in the room. The king said the man had 20 seconds to find the real flower. The man said, 'It's very stuffy in here. Could you open a window?' The king opened a window, and the man immediately knew which was the real flower. How did he know? -Riddles

Description : In 1209, on a hot summer day there was a man who was ordered to be executed by king. The king was a nice king though, and he said that if the man could prove himself wise, he would let him ... The king opened a window, and the man immediately knew which was the real flower. How did he know? -Riddles

Last Answer : When the King opened the window, a bee flew in and landed on the only real flower to gather pollen.

When shopping for bed linens, how do you select sheets that feel "cool" on those hot summer nights?

Description : When shopping for bed linens, how do you select sheets that feel "cool" on those hot summer nights?

Last Answer : I think that just regular cotton is the best. It’s the lightest of the fabric that are used for sheets I think (someone can correct me if I am wrong). And just use two sheets instead of a blanket.

Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Description : Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Last Answer : a) Soda bottles are often labelled store in cool and dry place . The carbon dioxide filled in soda bottles on exposure to heat, expands because the gas inside the bottle expands as temperature ... . When football is taken out, its temperature decreases so the volume to gas filled also decreases.

Match the organisms in column-I with habitats in column-II. Column-I Column-II A. Halophiles (i) Hot springs B. Thermoacidophiles (ii) Aquatic environment C. Methanogens (iii)Guts of ruminants D. Cyanobacteria (iv) Salty area Select the correct answer from the options given below. (a) A-(iv), B-(i), C-(iii), D-(ii) (b) A-(i), B-(ii), C-(iii), D-(iv) (c) A-(iii), B-(iv), C-(ii), D-(i) (d) A-(ii), B-(iv), C-(iii), D-(i)

Description : Match the organisms in column-I with habitats in column-II. Column-I Column-II A. Halophiles (i) Hot springs B. Thermoacidophiles (ii) Aquatic environment C. Methanogens (iii)Guts of ruminants D. Cyanobacteria (iv) Salty area Select the correct ... , C-(ii), D-(i) (d) A-(ii), B-(iv), C-(iii), D-(i)

Last Answer : (a) A-(iv), B-(i), C-(iii), D-(ii)

Complete the chain: Mediterranean climate ,Interior area of Asia, Hot summer, very low rainfall ,Coniferous forest

Description : Complete the chain: Mediterranean climate ,Interior area of Asia, Hot summer, very low rainfall ,Coniferous forest

Last Answer : Complete the chain: A B C D (1) Mediterranean climate (1) Interior ... High temperature and convectional rainfall (4) Xerophytic vegetation

Which one of the following is called as "Roaring Forty"? (1) Winds blowing in southern hemisphere between 40°-60° S (2) Winds blowing in northern hemisphere between 40°-60° N (3) Very cold winds which blow in winters (4) Very hot and fast blowing summer winds

Description : Which one of the following is called as "Roaring Forty"? (1) Winds blowing in southern hemisphere between 40°-60° S (2) Winds blowing in northern hemisphere between 40°-60° N (3) Very cold winds which blow in winters (4) Very hot and fast blowing summer winds

Last Answer : (1) Winds blowing in southern hemisphere between 40°-60° S Explanation: The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of ... South Pole and the Earth's rotation, and there are few landmasses to serve as windbreaks.

What is the best cat litter for a very good cat who tracks the stuff all around the house but doesn't want to.

Description : What is the best cat litter for a very good cat who tracks the stuff all around the house but doesn't want to.

Last Answer : We use Feline Pine. The look of it actually reminds me of Hampster food – too big to get stuck in kitty paws. There are benefits other than your kitty not tracking the litter around your house, too. It’s much safer for said kitty and generally smells a lot better. :) http://www.naturesearth.com/

what's causing leaf and some vine wilting in my summer quash ?

Description : what's causing leaf and some vine wilting in my summer quash ?

Last Answer : you might try to mix 1 teasp liquid dish soap & qt water in spray bottle and spray this after the sun has gone down.

The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called ------? A. Aphelion (Answer) B. Perihelion C. Perigee D. Apogee E. None of these

Description : The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called ------? A. Aphelion (Answer) B. Perihelion C. Perigee D. Apogee E. None of these

Last Answer : A. Aphelion (Answer)

Can anything be done for carpet that is buckling?

Description : Can anything be done for carpet that is buckling?

Last Answer : You can stretch it back flat: http://www.wikihow.com/Stretch-Carpet or pay someone to do it.

Define buckling factor.

Description : Define buckling factor.

Last Answer : It is the ratio of the equivalent length of column to the minimum radius of gyration.

The purpose of floating head in a heat exchanger is to (A) Avoid buckling of tubes (B) Provide support for tubes (C) Decrease the pressure drop (D) Facilitate its lengthening, if needed

Description : The purpose of floating head in a heat exchanger is to (A) Avoid buckling of tubes (B) Provide support for tubes (C) Decrease the pressure drop (D) Facilitate its lengthening, if needed

Last Answer : (A) Avoid buckling of tubes

A spring with index=15 is prone to buckling. a) True b) False

Description : A spring with index=15 is prone to buckling. a) True b) False

Last Answer : a) True

Height of coke oven is limited (say maximum upto 7 metres) mainly by the(A) Problem of uniform heating along its height(B) Structural strength of silica bricks(C) Problem in door cleaning(D) Buckling of ram of pusher car at the time of coke pushing

Description : Height of coke oven is limited (say maximum upto 7 metres) mainly by the (A) Problem of uniform heating along its height (B) Structural strength of silica bricks (C) Problem in door cleaning (D) Buckling of ram of pusher car at the time of coke pushing

Last Answer : (A) Problem of uniform heating along its height

Pick up the correct statement from the following: (A) The structural member subjected to compression and whose dimensions are small as compared to its length, is called a stmt (B) The vertical compression members are generally known as columns or stanchions (C) Deflection in lateral direction of a long column, is generally known as buckling (D) All the above

Description : Pick up the correct statement from the following:  (A) The structural member subjected to compression and whose dimensions are small as  compared to its length, is called a stmt  (B) The ... in lateral direction of a long column, is generally known as buckling  (D) All the above

Last Answer : (D) All the above

Euler's formula states that the buckling load for a column of length , both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are and respectively, is given by the relation (A) P = ²EI/l² (B) P = /EI (C) P = /l² (D) P = ²EI/l

Description : Euler's formula states that the buckling load for a column of length , both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are and respectively, is given by the relation (A) P = ²EI/l² (B) P = /EI (C) P = /l² (D) P = ²EI/l

Last Answer : (A) P = ²EI/l²

The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known (A) Buckling factor (B) Slenderness ratio (C) Crippling factor (D) None of these

Description : The ratio of the effective length of a column and minimum radius of gyration of its cross-sectional area, is known (A) Buckling factor (B) Slenderness ratio (C) Crippling factor (D) None of these

Last Answer : (B) Slenderness ratio