Answer:

Explanation:
L = Initial length of segment = 79 m
T = Normal temperature = 
l = Width to be left for expansion
= Coefficient of linear expansion of the material = 
= Maximum temperature = 
= Change in temperature = 
The expression of linear expansion is given by

The expression for the minimum gap distance l the engineers must leave for a track rated at temperature
is 
Answer:
7.1 m
Explanation:
Given:
Distance traveled by the student in the first attempt = 
Distance traveled by the student in the second attempt = 
So, the maximum distance that the student could travel in this attempt = 
So, the maximum distance that the student could travel in this attempt = 
Since the student first moves straight in a particular direction, rests for a while and then moves some distance in the same direction.
So, the largest distance that the student could possibly be from the starting point would be the largest distance of the final position of the student from the starting point.
And this distance is equal to the sum of the maximum distance possible in the first attempt and the second attempt of walking which is 7.1 m.
Hence, the largest distance that the student could possibly be from the starting point is 7.1 m.
What does thrice mean not being mean or anything just saying so I can help with the question
The force constant of the spring is approximately 24.038 newtons per meter.
As we are talking about Simple Harmonic Motion. In this exercise we need to determine the Spring Constant (
), in newtons per meter, from the equation of the Period (
), in seconds, which is described below:
(1)
Where
is the mass of the moving element, in kilograms.
If we know that
and
, then the spring constant of the spring is:




The force constant of the spring is approximately 24.038 newtons per meter.
Please see this question related to Simple Harmonic Motion for further details: brainly.com/question/17315536
The answer is C. because the lines will look the same as the earths gravity field (you can look up a graph)