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B H
Aspiring writer. College student. Guitar enthusiast Adventurer :D.
Valve knock on start up?
On start up, I get a loud noise coming from beneath the valve cover which sounds like valve knock. After a minute of running it dissapears.
The oil level is good and was changed three weeks ago. Recently, I had white smoke shooting out the exhaust for several days. and then it stopped completely. My electric power steering also went out. I think it s the motor. Anyways, The car is a 2005 Chevy Cobalt with 102k miles, AT.
What do you guys suspect the cause of the start up knock and could it be related to my recent troubles?
Anyone
2 AnswersMaintenance & Repairs5 years agoLarge Index vs Small Index? Difference in performance MySql?
Hello everyone,
If I chose to a varchar(10) column as an Index vs a a Text datatype column? I understand that Text is 65k bytes where as varchar(10) is much smaller. Can someone give a specific explanation of why larger indexes are more burdensome? The only thing I can think of is there's more bits to compare per individual subset of a query.
1 AnswerProgramming & Design5 years agoIs there any way to float divs and block level elements?
Even when using the float property or the display property and accounting for the available width of the display space, my block level elements still stack atop one another.
Thanks
1 AnswerProgramming & Design5 years agoHTML CSS. Fitting content into box?
Say I want to make paragraph. <p class=BOX> 200 chars long </p>. This paragraph is 200 chars long.
Here is the definition of p.BOX:
p.BOX
{
width:400px;
height: 200px;
backgroundcolor: yellow
}
//Ignore syntax errors
If we were to open this in a web browser, then we would have a yellow box whose text would spill out.
Bad:
-----------
. sadsad.dsdsadasdasdas
. .
. Box .
. .
------------
Are there any CSS statements I could incorporate in where the text's font's size and newline characters
are automatically calculated by the browser such that the content fits within the perimeter of the box.
Good:
-----------
. sadsad.
. dsadsa.
. dsasd .
. saddd .
------------
1 AnswerProgramming & Design5 years agoFind antiDeriv of S ln(4x+1) dx using by parts.?
I got (1/2 ln(4x+1)(4x+1) - (4x+1)) + C.
Is this correct?
Thanks!
2 AnswersMathematics5 years agoOptimization Problem: Calculate the max volume possible of a box with an open top that can be made from material measuring 10 X 20 feet?
You have a piece of material that measures 10 x 20 feet, and you are to cut the corners in order to make a box. What will the height of the box be if the volume is maximized.
So..
This is my setup.
b = base, h = height
(Surface Area)
200 = b^2 +4bh
Volume = b^2 * h
I think my set up is wrong, but I can't figure out why. If someone could go through this problem and explain their steps, that would be appreciated.
1 AnswerMathematics5 years agoAgeism in Tech?
So, I hear a lot about ageism in Tech. I wanted to get some input from people who currently work or have worked as software engineers. I'm 25 and should have my AAS by when I'm 26.5 yr old and I may be able to land an entry level job at that time. However, I am absolutely frightened of being denied work when I turn 40+. What are your experiences or experiences of other older folks in the field when it comes to ageism?
Thanks
1 AnswerProgramming & Design5 years agoCaliper bolt sheared Off. Recommended driving distance?
I am stuck between a rock and a hard place. My right lower rear caliper bolt either sheared off or unscrewed itself during driving and broke/fell off. I'm about 30 miles from home on the free way and I smell something which resembles the odor of a smoky over heating electric motor. When I get to where I was going, I inspected my brakes and saw that one of my rear calipers was peeled 30 counter clock wise. I had a hammer and pry bar in my car so I knocked back to where it's supposed to be. Is my car safe to drive home slowly, applying engine braking when I can (mt)? I can stop through out my trip and knock the caliper back if needed? Has anyone gone through something similar to this before?
Thanks
2 AnswersMaintenance & Repairs5 years agoC++ class inheritence problem?
Lets say I have a base class and four derived classes. Three of these derived classes will have an additional set<string> while the fourth will not. Is it bad practice to include a pure virtual getSet() function in the base class?
If so, is there a way to avoid casting base* ptr into derived* ptr in order to call getSet()?
Thanks
1 AnswerProgramming & Design5 years agoIteratng through a map C++ stl?
Hello everyone,
I have a map<string, CustomClass> and I am not sure how to properly declare the iterator. It's driving me insane.
The declaration of the map I want to declare is this:
map<string, CustomClass> myMap;
The declaration of the iterator is this:
map<string,CustomClass>::iterator myIterator;
To which I get the following error:
Severity Code Description Project File Line
Error (active) no suitable user-defined conversion from "std::_Tree_const_iterator<std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string, CustomClass>>>>" to "std::_Tree_iterator<std::_Tree_val<std::_Tree_simple_types<std::pair<const std::string, CustomClass>>>>" exists asgmt04 c:\Users\Toshiba\Desktop\a5\a5\Proj.cpp 44
1 AnswerProgramming & Design5 years agosin x - 2sin (x) = -sin x?
Foggy on trig. It seems that adding and subtracting like trig functions is straight forward, but I just wanted to check.
Is my answer correct?
2 AnswersMathematics5 years agoAsking how much an item from a distance or up close costs in Japanese?
So, Ikura nan desu ka is the way I've been taught to ask how much an item costs.
Do Kore, Sore, and Are ever come into play. If I'm holding a watch, would I insert kore in my sentence. Likewise, if the watch is far away , hanging up on a wall, would I use Are or simply point to it and say Ikura nan desu ka? Or, would I maybe use it's noun in the inquiry (My Japanese is bad so grammar will be horrible): Tokei wa ikura desu ka?
Thanks.
1 AnswerLanguages5 years agoEncapsulation, Information Hiding,?
Are encapsulation and information hiding separate concepts. Also, are abstraction and information hiding related? I've been told that all these things are and are not connected and maybe it's just an issue of semantics. Can a class can be well encapsulated but posses poor information hiding properties and poor abstraction or is that when a class hides information poorly, that it is poorly encapsulated?
For example,
class MyClass
{
// Data should be private.
public int data;
...
public void methods();
}
Assume this class can do everything that the object is modeling. In that sense, it is well encapsulated, but since it exposes sensitive data variables, it does not hide information well. Further, does this cause it to have a lesser quality of abstraction as it exposes details (variables which should be private) which (assume in this case) the user does not need to know.
Thank yo.
2 AnswersProgramming & Design5 years agoJava import Statement?
Let's say I have an ArrayList<CustomObj> in my simple class. I import Java.util.*, does this copy and paste all code from util into my source file? Does it increase the size of the program somewhat like C++ #include statements, or does it only include the ArrayList code?
On a side note, if I create my own ArrayList class, but still (for whatever reason) import util.*, is there name collision between my custom ArrayList and the ArrayList in util.*
thx
2 AnswersProgramming & Design5 years agoCalculus continuity?
Say I have the equation y = 2 whose domain is [-2, 3). -2 defined but 3 is not ( hole).
If I'm asked, is this equation continuous from [-2,3], would the proper reply be that is continuous from the right to -2? Or would the answer be it is not continuous on this interval since 3 is not defined.
Also, what if I have another almost identical equation, except that this time around 3 is defined, and I'm asked whether or not the equation is continuous on [-2, 3]. In this case, the equation would have 2 sided continuity from [-2, 3].
Thanks!
2 AnswersMathematics5 years agoHIgh ER bill?
My mom went to the ER room. It was a minor problem. She had a urine test and ultrasound performed. In total, she spent 5 hours in the ER. Most of her time she just sat around in the waiting room. The bills amount to 5300$. The first 3000 are for the tests and medication which is fine, but the last 2300 are for a "level 4" fee. She spent maybe 10 minutes talking to a physicians which basically told her to go to a specialist. The rest of the time she consumed, tests and ultra sound, she was billed for. I researched this level 4 er code and it seems this fee is reserved for severe medical problems which require a lot of resources.
Is there a way to renegotiate this? It seems far too high given she spent most of the time in the waiting room?
Thanks
7 AnswersOther - General Health Care5 years agoJapanese Wa particle?
I don't understand what the topic is. If you could explain, that would be great.
Also, does wa mark the word before or after.
Boku wa Amerikan-jin desu.
Here, is wa marking Boku or Amerikan-jin or both?
2 AnswersLanguages5 years agoSmall Root multlipcation problem?
g(x) = Root(x^2 + 5)
I want to multiply g(x) by 1/x, but I want the 1/x to be inside the root operator.
No: [Root(x^2 + 5) / x
Yes: Root( [x^2+5]/ x)
I'm just not sure what to do to the x when I move it inside the operator.
Thanks
2 AnswersMathematics5 years agoCounter object in Java?
So I have a project where I need to use a data structure provided by java.util.
There's going to be a list of alphabetically sorted entries containing counts.
Here's an example:
Name Count
John 5
Sally 33
Will be many more entries, but you get the picture. I was planning on using a TreeMap<String, Integer>.
I've just learned that the object Integer is immutable once created. I thought, well I'll just create my own Counter Object but I'm not allowed. I also can't use int in place of integer because it is a primitive.
Does anyone have suggestions on how to solve this?
New to java so not very familar with the basic library yet.
Thanks
1 AnswerProgramming & Design5 years ago