Recent Posts
| Title | Description | Creator | created |
|---|---|---|---|
| Calculations | The law of gravity included a symbol for proportionality. In order to use this relationship for solving problems, we must remove the proportionality by placing a constant in the expression | Dr. Osama M. Khaled | Apr 01, 2024 12:43 PM |
| Weightlessness | Heavy and light objects fall at the same rate !! | Dr. Osama M. Khaled | Mar 31, 2024 07:48 PM |
| Earth Satellites | Newton argued that if a cannon could be placed on a hill high enough to be outside the earth's atmosphere, and if the cannon could be made powerful enough, a cannonball could be placed in orbit around the earth. | Dr. Osama M. Khaled | Mar 30, 2024 07:48 PM |
| Kepler's Third Law | Kepler's third law states the relationship between a planet's average distance from the sun and the time required for the planet to complete one orbit | Dr. Osama M. Khaled | Mar 29, 2024 07:55 PM |
| Kepler's Laws | About 50 years before Newton formulated the law of gravity, Johanne Kepler (1571-1630) had found some rules that could be used to calculate the orbits of the planets | Dr. Osama M. Khaled | Mar 27, 2024 08:47 PM |
| The Moon and Gravity | The moon is 240,000 miles from earth-center, or 60 times as far as we are from center | Dr. Osama M. Khaled | Mar 27, 2024 07:56 AM |
| The Law of Gravity | Learn how gravity keeps the universe in balance | Dr. Osama M. Khaled | Mar 20, 2024 08:52 PM |
| Find the reciprocal of a fraction | Division with fractions involves working with reciprocals | Dr. Osama M. Khaled | Mar 17, 2024 01:23 AM |
| Solve application problems by multiplying fractions | The key word of often appears in application problems involving fractions. When a fraction is followed by the word of, it indicates that we are to find a part of some quantity using multiplication | Dr. Osama M. Khaled | Mar 14, 2024 07:37 PM |
| Evaluate exponential expressions that have fractional bases | If the base of an exponential expression is a fraction, the exponent tells us how many times to write that fraction as a factor | Dr. Osama M. Khaled | Mar 12, 2024 04:54 AM |
| Simplify answers when multiplying fractions | After multiplying two fractions, we need to simplify the result, if possible | Dr. Osama M. Khaled | Mar 06, 2024 08:40 AM |
| Use properties of parallel lines cut by a transversal to find unknown angle measures | Lines that are cut by a transversal may or may not be parallel | Dr. Osama M. Khaled | Jan 28, 2024 07:52 AM |
| Find powers of products | To raise a product to a power, raise each factor of the product to that power | Dr. Osama M. Khaled | Jan 18, 2024 03:55 PM |
| Raise exponential expressions to a power | To raise an exponential expression to a power, keep the base and multiply the exponents | Dr. Osama M. Khaled | Jan 11, 2024 04:58 AM |
| Single- and Double-Displacement Reactions | Recognize chemical reactions as single-replacement reactions and double-replacement reactions | Dr. Osama M. Khaled | Dec 28, 2023 06:10 AM |
| Expressing Units | Learn the units that go with various quantities, express units using their abbreviations, and make new units by combining numerical prefixes with units. | Dr. Osama M. Khaled | Dec 26, 2023 04:33 AM |
| Multiply exponential expressions | Multiply exponential expressions that have like bases | Dr. Osama M. Khaled | Dec 17, 2023 04:00 AM |
| Identify bases and exponents | An exponent indicates repeated multiplication as a shortcut method of how many times the base is used as a factor. | Dr. Osama M. Khaled | Dec 16, 2023 08:13 AM |
| Exercise 1: Vocabulary | Dr. Osama M. Khaled | Dec 11, 2023 03:44 AM | |
| Application problems with unknowns | Solve application problems to find one unknown | Dr. Osama M. Khaled | Dec 02, 2023 08:40 AM |
| Draw Formula Graph | Pass in the formula and draw its graph | Dr. Osama M. Khaled | Nov 23, 2023 01:49 PM |
| Simplify algebraic expressions and equations | Dr. Osama M. Khaled | Nov 19, 2023 05:00 AM | |
| Simplify expressions to solve equations | When solving equations, we should simplify the expressions that make up the left and right sides before applying any properties of equality. Often, that involves removing parentheses and/or combining like terms. | Dr. Osama M. Khaled | Nov 18, 2023 10:07 PM |
| Use more than one property of equality to solve equations | More complicated equations may require using more than one property to solve it. | Dr. Osama M. Khaled | Nov 07, 2023 07:28 AM |
| Use the division property of equality | Dividing both sides of an equation by the same nonzero number does not change its solution. | Dr. Osama M. Khaled | Nov 04, 2023 09:27 AM |
| Privacy Policy | Dr. Osama M. Khaled | Sep 09, 2023 11:22 AM | |
| Variables and Memory Optimization | When you start coding, you need to be mindful to memory usage and leakage. | Dr. Osama M. Khaled | May 27, 2021 10:40 PM |
| Make a phone number callable in Android | You may want to present a number and make it callable. | Dr. Osama M. Khaled | May 23, 2021 11:36 AM |
| Check if a string is Null or Empty | It is sometimes not practical to work out a string object immediately before validating if it is null or not | Dr. Osama M. Khaled | May 17, 2021 09:58 PM |
| Check if a string has a white space at any position | 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 ...). | Dr. Osama M. Khaled | May 21, 2021 12:00 PM |
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