the change in pitch of a train's horn as it passes while you are standing still can be explained by -General Knowledge

the change in pitch of a train's horn as it passes while you are standing still can be explained by -General Knowledge
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The change in pitch of a train's horn as it passes while you are standing still can be explained by the Doppler Effect.
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A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives Explanation: Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation).

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is – (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives Explanation: Sound is a sequence of waves of pressure that propagates through compressible media such as air or water. (Sound can propagate through solids as well, but there are additional modes of propagation).

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is - (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is - (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer : (3) of higher pitch when train arrives

A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Description : A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is (1) the same in both cases in all respects (2) of higher intensity when train arrives (3) of higher pitch when train arrives (4) of higher pitch when train departs

Last Answer :  of higher pitch when train arrives

The apparent change in frequency or pitch because of motion is explained by what effect?

Description : The apparent change in frequency or pitch because of motion is explained by what effect?

Last Answer : The Doppler effect.

Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is: A.1 : 3 B.3 : 4 C.3 : 2 D.Data inadequate E.None of these

Description : Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and  they cross each other in 23 seconds. The ratio of their speeds is: A.1 : 3 B.3 : 4 C.3 : 2 D.Data inadequate E.None of these

Last Answer : Answer - C (3 : 2) Explanation - Let the speeds of the two trains be x m/sec and y m/sec respectively. Then, length of the first train = 27x metres, and length of the second train = 17y metres. relative speed = total ... 23x + 23y = 27x + 17 y 27x-23x= 23 y-17y 4x=6y x/y=6/4=3/2= 3:2

A and B are 2 trains running in opposite direction cross a man standing on the platform in 54sec and 34 sec respectively and they cross each other in 46sec. The ratio of their speed is. A) 1:3 B) 3:2 C) 2:3 D) 2:2

Description : A and B are 2 trains running in opposite direction cross a man standing on the platform in 54sec and 34 sec respectively and they cross each other in 46sec. The ratio of their speed is. A) 1:3 B) 3:2 C) 2:3 D) 2:2

Last Answer : ANSWER:B Explanation:  Let the speed of the 1st train be x' m/sec and  the speed of the 2nd train be y' m/sec  then the length of the 1st train = 54 x metres  length of the 2nd train = 34 y metres  54x + 34y / x+ y ...  54x - 46x = 46y - 34y  8x = 12y  x/y = 12 / 8 = 6/4 = 3/2  x:y = 3:2

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is: A.40 m B.55 m C.65 m D.50 m E.None of these

Description : Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is: A.40 m B.55 m C.65 m D.50 m E.None of these

Last Answer : Answer- D (50) Explanation – Relative speed= total lengths/time (46-36) x 5/18 = [L + L ] / 36 10 x (5/18) x36 x (1/2)= L L=50 m

Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train? A.27 7/9 m B.28 m C.29 m D.30 2/7 m E.None of these

Description : Two trains are running at 40 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting in the slower train in 5 seconds. What is the length of the fast train? A.27 7/9 m B.28 m C.29 m D.30 2/7 m E.None of these 

Last Answer : Answer – A (27 7/9 m) Explanation – When SAME direction- MINUS Relative speed = (40-20) km/hr = [20 x 5/18] m/sec = [50/9] m/sec. Length of faster train = sxt=[50/9 x 5] m = 250/9 m = 27 7/9 m.

Two trains are running at 120 km/hr and 60km/hr respectively in the same direction. Fast train completely passes a boy sitting in the slower train in 15 seconds. What is the length of the fast train? A) 150m B) 550 m C) 250m D) 215m

Description : Two trains are running at 120 km/hr and 60km/hr respectively in the same direction. Fast train completely passes a boy sitting in the slower train in 15 seconds. What is the length of the fast train? A) 150m B) 550 m C) 250m D) 215m 

Last Answer :  ANSWER: C  Explanation:  Speed of the 1st train = 120km/hr  Speed of the 2nd train = 60km/hr If the direction is given in the same direction then we subtract the relative speed.  Relative speed = (120 - 60) ... / 3 * 15)m  =(750/3)m  = 250m  Therefore the length of the faster train is 250m

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

How would you describe the sound of a car whose horn is stuck as it approaches then passes you?

Description : How would you describe the sound of a car whose horn is stuck as it approaches then passes you?

Last Answer : Need answer

When the curve passes through all the data points, then the curve is known as a.approximation curve b.pitch curve c.data curve d.interpolant curve

Description : When the curve passes through all the data points, then the curve is known as a.approximation curve b.pitch curve c.data curve d.interpolant curve

Last Answer : d.interpolant curve

Does Lionel still make toy trains?

Description : Does Lionel still make toy trains?

Last Answer : Lionel began making toy trains in the early 1900's. Lionel no longer makes toy trains. They were discontinued in the late 1960's. http://www.ehow.com/how_7518020_identify-lionel-train-set.html

A train p starts from delhi at 8pm and reaches kanyakumari at 10pm. While another train q starts from kanyakumari at 8pm and reaches delhi at 11pm. The two trains will cross each other at. A) 9.24pm B) 9.10pm C) 9.02pm D) 9.12pm

Description : A train p starts from delhi at 8pm and reaches kanyakumari at 10pm. While another train q starts from kanyakumari at 8pm and reaches delhi at 11pm. The two trains will cross each other at. A) 9.24pm B) 9.10pm C) 9.02pm D) 9.12pm

Last Answer : ANSWER: D Explanation:  Suppose the distance between delhi and kanyakumari is x km  The time taken by p to cover x km = 2hrs  The time taken by q to cover x km = 3hrs  Therefore speed of p = distance / time  = x ... = 1/y  5y = 6  y = (6/5 * 60)min= 72min  So the two trains meet at 9.12pm

Sliding filament theory can be best explained as (a) actin and myosin filaments do not shorten but rather slide pass each other (b) when myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten (c) when myofilaments slide pass each other actin filaments shorten while myosin filaments do not shorten (d) actin and myosin filaments shorten and slide pass each other.

Description : Sliding filament theory can be best explained as (a) actin and myosin filaments do not shorten but rather slide pass each other (b) when myofilaments slide pass each other, myosin filaments shorten ... filaments do not shorten (d) actin and myosin filaments shorten and slide pass each other.

Last Answer : (a) actin and myosin filaments do not shorten but rather slide pass each other

The swing of a spinning cricket ball in air can be explained on the basis of (a) Sudden change in wind direction (b) Buoyancy of air (c) Turbulence caused by wind (d) Bernoulli’s theorem

Description : The swing of a spinning cricket ball in air can be explained on the basis of (a) Sudden change in wind direction (b) Buoyancy of air (c) Turbulence caused by wind (d) Bernoulli’s theorem

Last Answer : Ans:(d)

The swing of a spinning cricket ball in air can be explained on the basis of – (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli's theorem.

Description : The swing of a spinning cricket ball in air can be explained on the basis of – (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli's theorem.

Last Answer : (3) Turbulence caused by wind. Explanation: The main theory of swing bowling surrounded turbulent and laminar airflow. Laminar air separates from the surface of the ball earlier than turbulent flow air, ... towards the back; inducing a greater lift force on the turbulent airflow side of the ball.

The swing of a spinning cricket ball in air can be explained on the basis of (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli’s theorem.

Description : The swing of a spinning cricket ball in air can be explained on the basis of (1) Sudden change in wind direction. (2) Buoyancy of air. (3) Turbulence caused by wind. (4) Bernoulli’s theorem.

Last Answer : Turbulence caused by wind.

Which mirror is used to give a rear view in trains? -General Knowledge

Description : Which mirror is used to give a rear view in trains? -General Knowledge

Last Answer : answer:

"This Methodology Trains The Child To Search Facts, Rules And Principles Led By His Own Efforts, Organize The Set Of Knowledge Gained And Delineate General Rule". The Aforesaid Statement Is About Which Of The following Methodology Of Teaching? Options: A) Montessori B) Kindergarten C) Heuristic D) Playway

Description : "This Methodology Trains The Child To Search Facts, Rules And Principles Led By His Own Efforts, Organize The Set Of Knowledge Gained And Delineate General Rule". The Aforesaid Statement Is ... The following Methodology Of Teaching? Options: A) Montessori B) Kindergarten C) Heuristic D) Playway

Last Answer : C) Heuristic 

If you could change your car horn to a song lyric, what are you choosing?

Description : If you could change your car horn to a song lyric, what are you choosing?

Last Answer : Move bitch! Get outta way!

If we had claws/wings/tails/horns/etc we would have to go to a claw/wing/tail/horn/etc salon when we had a fancy party or wanted to look nice. How would fashion trends, daily life inconveniences, clothes design change if we had other animal body parts?

Description : If we had claws/wings/tails/horns/etc we would have to go to a claw/wing/tail/horn/etc salon when we had a fancy party or wanted to look nice. How would fashion trends, daily life inconveniences, clothes design change if we had other animal body parts?

Last Answer : Having horns would give a brand new meaning to giving head

If we had claws/wings/tails/horns/etc we would have to go to a claw/wing/tail/horn/etc salon when we had a fancy party or wanted to look nice. How would fashion trends, daily life inconveniences, clothes design change if we had other animal body parts?

Description : If we had claws/wings/tails/horns/etc we would have to go to a claw/wing/tail/horn/etc salon when we had a fancy party or wanted to look nice. How would fashion trends, daily life inconveniences, clothes design change if we had other animal body parts?

Last Answer : Having horns would give a brand new meaning to giving head

what was the result of the encounter between us forces and the sioux at little big horn? -General Knowledge

Description : what was the result of the encounter between us forces and the sioux at little big horn? -General Knowledge

Last Answer : The United States forces under Custer were massacred was the result of the encounter between US forces and the Sioux at Little Big Horn.

your vehicle must have a horn which can be heard from a distance of _____ feet. -General Knowledge

Description : your vehicle must have a horn which can be heard from a distance of _____ feet. -General Knowledge

Last Answer : Your vehicle must have a horn which can be heard from a distance of 200 feet.

Which are the “Horn of Africa”? -General Knowledge

Description : Which are the “Horn of Africa”? -General Knowledge

Last Answer : The answer is 'Ethiopia, Djibouti, Somalia'

Which are the “Horn of Africa”? -General Knowledge

Description : Which are the “Horn of Africa”? -General Knowledge

Last Answer : answer:

Can you recommend any shoes that are specifically designed for long periods of standing still?

Description : Can you recommend any shoes that are specifically designed for long periods of standing still?

Last Answer : Merrell, they make running and hiking shoes/boots but also make walking/casual shoes. Known for good traction and comfort.

What southern state has the most still-standing antebellum houses?

Description : What southern state has the most still-standing antebellum houses?

Last Answer : answer:I can't quantity it but my daughter and I had a wonderful visit in Charleston, SC in April several years ago for their historic house and garden tours. There were both ... top heavy with Georgian silver that uncle Beauregard brought with him from England. http://historictoursofcharleston.com

Hurricane Damage question: Is _________ Still Standing?

Description : Hurricane Damage question: Is _________ Still Standing?

Last Answer : Conference House is still there

Is your old school still standing or long since gone?

Description : Is your old school still standing or long since gone?

Last Answer : My high school has been standing for over 100 years.

What patriotic song was written by a person looking at an American flag that was still standing after Great Britain bombarded Baltimore's Fort McHenry for 25 hours in 1814?

Description : What patriotic song was written by a person looking at an American flag that was still standing after Great Britain bombarded Baltimore's Fort McHenry for 25 hours in 1814?

Last Answer : The Star-Spangled Banner

I have two bodies joined together as one. When standing still. I ran and ran. What am I?

Description : I have two bodies joined together as one. When standing still. I ran and ran. What am I?

Last Answer : Hourglass

How does one properly ride on a bus while standing?

Description : How does one properly ride on a bus while standing?

Last Answer : In addition to clinging to the bar, I find that the best foot position is one foot pointing forward, and the other foot behind it and pointing to the side.

what would happen to you if you had your throat slit while standing? how long would it take for you to fall over?

Description : what would happen to you if you had your throat slit while standing? how long would it take for you to fall over?

Last Answer : answer:Depends which arteries got nailed. If you got the two big players that carry o2 rich blood up ward. I’m assuming you drop to the ground in seconds. Maybe not even two seconds.

How can you physically stand behind your father while he is standing behind you? -Riddles

Description : How can you physically stand behind your father while he is standing behind you? -Riddles

Last Answer : You both must be standing back to back.

My body is very weak. The toilet is every 2/3 days. After sitting and standing for a while, the eyes close , the head becomes dizzy , and after that it is like this. Want to know the names and prices of several small and large vitamin files ?

Description : My body is very weak. The toilet is every 2/3 days. After sitting and standing for a while, the eyes close , the head becomes dizzy , and after that it is like this. Want to know the names and prices of several small and large vitamin files ?

Last Answer : If you want to take Ayurvedic Vitamin Syrup, eat Hamdard's Sinkara file. Eat this file twice a day. Dose with doctor's advice. There are no side effects in this medicine.

Is the giraffe sleeping while standing?

Description : Or do you lie down for the night?

Last Answer : http://www.czporadna.cz/?qa=15181/spi-zirafa-ve-stoje

Is the giraffe sleeping while standing?

Description : How would you lie down with such a long neck?

Last Answer : yes, sleeping stands, after minutes. (tuxedo)

What is the medical term for leaning back while standing?

Description : What is the medical term for leaning back while standing?

Last Answer : Need answer

The cow while standing up from the sitting posture initially takes support and puts its body weight on: (a) patellas of the forelegs (b) shanks of the forelegs (c) both the forelegs (d) the patellas and shanks of both the fore and hind legs

Description : The cow while standing up from the sitting posture initially takes support and puts its body weight on: (a) patellas of the forelegs (b) shanks of the forelegs (c) both the forelegs (d) the patellas and shanks of both the fore and hind legs

Last Answer : Ans:(a)

It is a machine designed for harvesting ,threshing,separating, cleaning and collecting grains while moving through standing crops. a. Weeder b. thresher d. None of above

Description : It is a machine designed for harvesting ,threshing,separating, cleaning and collecting grains while moving through standing crops. a. Weeder b. thresher d. None of above

Last Answer : Ans-          c. COMBINE

machine designed for harvesting, threshing , cleaning and collecting grains while moving through standing crops. a) Combine b) Self operated VCR c) Power roller thresher d) Post harvesting technology

Description : machine designed for harvesting, threshing , cleaning and collecting grains while moving through standing crops. a) Combine b) Self operated VCR c) Power roller thresher d) Post harvesting technology

Last Answer : Combine 

It is a machine designed for harvesting, threshing, separating, cleaning and collecting grains while moving through standing crops a. Combine b. Thresher c. Harvestor d. all of the above

Description : It is a machine designed for harvesting, threshing, separating, cleaning and collecting grains while moving through standing crops a. Combine b. Thresher c. Harvestor d. all of the above

Last Answer : Ans:- a. Combine

Out of the following, in which lesson, a general rule is explained first and then examples are illustrated? Options: A) Deductive lesson B) Inductive lesson C) Cognitive lesson D) Skill lesson

Description : Out of the following, in which lesson, a general rule is explained first and then examples are illustrated? Options: A) Deductive lesson B) Inductive lesson C) Cognitive lesson D) Skill lesson

Last Answer : A) Deductive lesson

if a person passes and doesn't own any property, do you still have to go to probate court. also, if they owned property and signed it over to a relative, is there a time frame before you die this this should take place?

Description : if a person passes and doesn't own any property, do you still have to go to probate court. also, if they owned property and signed it over to a relative, is there a time frame before you die this this should take place?

Last Answer : If there are any assets and debts, the estate will be probated. The assets do not have to include real property. If the individual deeded the property to another prior to his passing, the property belongs to the deed hold.

How does the slide of a trombone change the pitch of an instrument?

Description : How does the slide of a trombone change the pitch of an instrument?

Last Answer : Feel Free to Answer

How can you change the pitch of a violin?

Description : How can you change the pitch of a violin?

Last Answer : What is the answer ?