The water main in cities must be placed at a sufficient depth below the earth’s surface to avoid freezing during extended periods of subfreezing temperatures. determine the minimum depth at which the water main must be placed at a location where the soil is initially at 15°c and the earth’s surface temperature under the worst conditions is expected to remain at -10°c for a period of 75 days. take the properties of the soil at that location to be k = 0.7 w/m°c and α = 1.4 x 10-5 m2 /s.

answer: here is this i found it

explanation:

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .