• Power consumption calculation?

    I have an Arduino board and a 5000mAh portable charger that outputs at 9V 2A. How long could the charger power the board? Assume that only the board is being powered, so the figures in the link are valid. https://www.arduino.cc/en/Main/ArduinoBo...
    I have an Arduino board and a 5000mAh portable charger that outputs at 9V 2A. How long could the charger power the board? Assume that only the board is being powered, so the figures in the link are valid. https://www.arduino.cc/en/Main/ArduinoBo...
    1 answer · Engineering · 1 year ago
  • Compiling a wxWidgets program with gcc.?

    I've installed wxWidgets installed on the desktop and I have a .cpp file already. The .cpp file is also on the desktop. I'm trying to run it using the command: g++ sample.cpp `wx-config --cxxflags --libs` -o test However, I keep getting the error: g++: error: wx-config --cxflags --libs: No such file or directory It seems to be that the .cpp... show more
    I've installed wxWidgets installed on the desktop and I have a .cpp file already. The .cpp file is also on the desktop. I'm trying to run it using the command: g++ sample.cpp `wx-config --cxxflags --libs` -o test However, I keep getting the error: g++: error: wx-config --cxflags --libs: No such file or directory It seems to be that the .cpp isn't in the correct place. Does the .cpp have to be in a certain place?
    1 answer · Programming & Design · 2 years ago
  • Building/executing wxWidgets in Linux?

    I've installed wxWidgets installed on the desktop and I have a .cpp file already. The .cpp file is also on the desktop. I'm trying to run it using the command: g++ sample.cpp `wx-config --cxxflags --libs` -o test However, I keep getting the error: g++: error: wx-config --cxflags --libs: No such file or directory It seems to be that the .cpp... show more
    I've installed wxWidgets installed on the desktop and I have a .cpp file already. The .cpp file is also on the desktop. I'm trying to run it using the command: g++ sample.cpp `wx-config --cxxflags --libs` -o test However, I keep getting the error: g++: error: wx-config --cxflags --libs: No such file or directory It seems to be that the .cpp isn't in the correct place. Where should it be?
    1 answer · Programming & Design · 2 years ago
  • Using the find command in UNIX?

    How would I use this command to find all files in the home directory, except for files in the 'dock' directory?
    How would I use this command to find all files in the home directory, except for files in the 'dock' directory?
    1 answer · Programming & Design · 3 years ago
  • Sin 2x = 0.836. Find x?

    I've used the double angle formula but not able to get much farther.
    I've used the double angle formula but not able to get much farther.
    3 answers · Mathematics · 3 years ago
  • Integral by parts?

    The problem is: ∫ x^2 ( x − 1 )^5 dx And the answer is shown in the picture also. Can anyone help me out with the steps? It's supposedly done using Integration by parts but I'm unable to exactly get the answer.
    The problem is: ∫ x^2 ( x − 1 )^5 dx And the answer is shown in the picture also. Can anyone help me out with the steps? It's supposedly done using Integration by parts but I'm unable to exactly get the answer.
    1 answer · Mathematics · 4 years ago
  • Given that sin A=3/5 and cos B=5/13, find the value of cos ( A− B )?

    Please show steps.
    Please show steps.
    5 answers · Mathematics · 4 years ago
  • What is the dy/dx of y =√ (x^4+3x −1)?

    Please show steps.
    Please show steps.
    5 answers · Mathematics · 4 years ago
  • Find the equation of the circle whose center is at the point (1,-7) and which passes through the point (-4, 5?

    Easy points time again. Show working.
    Easy points time again. Show working.
    1 answer · Mathematics · 4 years ago
  • Remainder Theorem and possibly Simultaneous Equations?

    When 6x^3+ax^2+bx+ 4 is divided by x+ 1 the remainder is -15, and when the expression is divided by x −3 the remainder is 49. Use the remainder theorem to show that a=−13 , b= 0 I'm pretty sure this is a simultaneous equation. Could you please use elimination method if it is?
    When 6x^3+ax^2+bx+ 4 is divided by x+ 1 the remainder is -15, and when the expression is divided by x −3 the remainder is 49. Use the remainder theorem to show that a=−13 , b= 0 I'm pretty sure this is a simultaneous equation. Could you please use elimination method if it is?
    3 answers · Mathematics · 4 years ago
  • If the area of a square is 11 +√112, calculate its perimeter.?

    I know what the answer is already, I just want someone to explain the steps for me.
    I know what the answer is already, I just want someone to explain the steps for me.
    3 answers · Mathematics · 4 years ago
  • Which would better programming?

    I have a program that sorts a text file with n amount of lines using arrays. The question is: Should I search through the file to see how big the array should be, or make an array with an undefined amount of space then adjust the space after placing the values in?
    I have a program that sorts a text file with n amount of lines using arrays. The question is: Should I search through the file to see how big the array should be, or make an array with an undefined amount of space then adjust the space after placing the values in?
    3 answers · Programming & Design · 4 years ago
  • RadioBUttonList in VB Express 2012?

    I am trying to use a RadioButtonList in my program but cannot find the control in the Toolbox. Is it even in VB Express 2012 for Windows Desktop?
    I am trying to use a RadioButtonList in my program but cannot find the control in the Toolbox. Is it even in VB Express 2012 for Windows Desktop?
    1 answer · Programming & Design · 5 years ago
  • Finding hardware in BIOS?

    I think my nVidia 630M died, since I cannot find it in Device Manager and the drivers cannot find it, but I want to make sure. In the BIOS, It still gives the option to use Optimus, but I don't know if that's just because Optimus is still installed. I don't know exactly how to find any information on installed hardware in the BIOS, so... show more
    I think my nVidia 630M died, since I cannot find it in Device Manager and the drivers cannot find it, but I want to make sure. In the BIOS, It still gives the option to use Optimus, but I don't know if that's just because Optimus is still installed. I don't know exactly how to find any information on installed hardware in the BIOS, so any help would be grateful.
    2 answers · Laptops & Notebooks · 5 years ago
  • Graphing problem.....?

    The function f(x) = -3x + 9 is de fined on the interval [0; 3]. But if you plug in 0, you don't get 3. How do I graph this? Normally it would give 9. The question in its entirety is on page 909 in this link:http://books.google.com.bz/books?id=El9C...
    The function f(x) = -3x + 9 is de fined on the interval [0; 3]. But if you plug in 0, you don't get 3. How do I graph this? Normally it would give 9. The question in its entirety is on page 909 in this link:http://books.google.com.bz/books?id=El9C...
    1 answer · Mathematics · 5 years ago
  • Graphing problem.....?

    The function f(x) = -3x + 9 is de fined on the interval [0; 3]. But if you plug in 0, you don't get 3. How do I graph this?
    The function f(x) = -3x + 9 is de fined on the interval [0; 3]. But if you plug in 0, you don't get 3. How do I graph this?
    1 answer · Mathematics · 5 years ago
  • Are there any countries that force its residents to to do certain things that are eventually beneficial?

    For example, being forced into the military. It doesn't matter if it still exists today or not.
    For example, being forced into the military. It doesn't matter if it still exists today or not.
    2 answers · Government · 5 years ago
  • Precal Radicals question.?

    What is: (x + sqrt(x^2 - 1)) (x - sqrt(x^2 - 1)) I think it should result in zero but I can't figure out how it would be. Could you show how you got the answer?
    What is: (x + sqrt(x^2 - 1)) (x - sqrt(x^2 - 1)) I think it should result in zero but I can't figure out how it would be. Could you show how you got the answer?
    1 answer · Mathematics · 5 years ago