1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrej [43]
3 years ago
14

A railroad track has small gaps between sections of,metal rails . Why are those gaps needed?

SAT
2 answers:
mel-nik [20]3 years ago
7 0
Because all metal expands when heated. If two railway tracks were to be laid together without any gap they will push against each other when they expand in the day. (This is because of the heat of the sun.) When they cool down at night they will contract against each other and return to their original state pulling against each other. The constant pushing and pulling, due to the change of temperature, will cause the joints between the tracks to weaken. They may also break free from one another, causing derailments of trains, and loss of lives. 

Thanks for posting your question on Brainly! I hope this helps! :) 
Tom [10]3 years ago
4 0
The railway engineers always leave a small gap between two rails  to compensate for the expansion of the rails
You might be interested in
E solved nyi go yong puzzle please<br>​
Ksivusya [100]

Explanation:

the picture is not clear so please give me clear clarification

3 0
3 years ago
Why might you choose to filter a list or table instead of simply sorting it?.
zaharov [31]
I would choose a coordinate table. And list them as (x,y)
8 0
2 years ago
Which phrase from the passage is an example of indirect characterization? a bit of a perfectionist anxious to learn new things c
Leno4ka [110]

Answer:

d lazily flipped through the pages

Explanation:

taking text srry if I'm wrong

4 0
3 years ago
In a video game, two characters follow paths represented by and , respectively. The characters travel at different speeds and co
Zina [86]

Answer:

yes choose b

Explanation:

3 0
3 years ago
Read 2 more answers
Describe the direction, speed, and acceleration of an object moving with uniform circular motion.
sveticcg [70]

Answer:

In uniform circular motion, the speed remains constant while the direction of the object changes. This means the object experiences an acceleration toward the center of the circle, which is known as centripetal acceleration.

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • which of the following is equivalent to (3^x+1)(3^x-1)^2/9^x for all x? a. 3^2x-1 b. 3^x c. 3^x-1 d. 3^x-2 e. 3^3-x
    13·1 answer
  • An ocean trench:
    7·2 answers
  • Classify the triangle by its angles.
    5·2 answers
  • Gggggggggggggggggggggggggg
    12·1 answer
  • Given that f(x)=x+5f(x)=x+5, g(x)=-5xg(x)=−5x and h(x)=3f(x-1)-2g(x)h(x)=3f(x−1)−2g(x), then what is the value of h(5)h(5)?
    11·1 answer
  • Help me find the answer
    14·1 answer
  • Bending of light that happens when light travels throught different mediums (subtance)
    14·1 answer
  • According to the beginning of wisdom which of the following is not consistent
    15·1 answer
  • What is a good studying technique?
    11·2 answers
  • Which list includes elements with the most similar chemical properties
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!