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  1. Cement Mixers
    by Dr. Osama M. Khaled — published May 29, 2024 Located in Mathematics / … / Multiplying and Dividing Mixed Numbers / Application Problems
  2. Change in momentum equation
    by Dr. Osama M. Khaled — published Jun 10, 2023 — last modified Jul 03, 2025 12:29 PM Located in Physics / Momentum and Energy Conservation / Momentum
  3. Changes from the sol to the gel state may be stimulated by changes in
    by Dr. Osama M. Khaled — published Jul 17, 2022 — last modified May 30, 2025 09:04 PM Located in Biology / Cell Structure / Inside Plasma Membrane
  4. chart_for_percent.gif
    by Dr. Osama M. Khaled — last modified Jul 15, 2024 08:49 PM Located in Mathematics / … / Write percents as decimals / TV Websites
    chart_for_percent.gif
  5. Check if a string has a white space at any position
    by Dr. Osama M. Khaled — published May 21, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language
    It is important sometimes to check a string and make sure that it does contain a white space (e.g. space, new line, tab, etc ...).
    Located in Computing / Programming / Java
  6. Check if a string is Null or Empty
    by Dr. Osama M. Khaled — published May 17, 2021 — last modified Jul 19, 2022 04:23 AM — filed under: Java, Algorithm, Programming Language
    It is sometimes not practical to work out a string object immediately before validating if it is null or not
    Located in Computing / Programming / Java
  7. Check if Python is installed on Windows
    by Dr. Osama M. Khaled — published Sep 30, 2022 — last modified Sep 30, 2022 09:51 PM Located in Computing / … / Introduction / Environment Setup
  8. Check subtraction using addition
    by Dr. Osama M. Khaled — published Oct 31, 2025 — last modified Oct 31, 2025 10:48 AM — filed under: Year 3
    To describe the special relationship between addition and subtraction, we say that they are inverse operations
    Located in Mathematics / … / Whole Numbers / Subtracting Whole Numbers
  9. Check the following subtraction
    by Dr. Osama M. Khaled — published Oct 31, 2025 Located in Mathematics / … / Subtracting Whole Numbers / Check subtraction using addition
  10. Check the following subtraction
    by Dr. Osama M. Khaled — published Oct 31, 2025 Located in Mathematics / … / Subtracting Whole Numbers / Check subtraction using addition
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