Category: Physics

What happens to air pressure as altitude decreases quizlet? As air pressure decreases altitude increases. As air pressure decreases so does density. What happens to air pressure and density as altitude increases? Altitude and Density The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down […]

Which element has a mass of 24? Chromium Why are lanthanides Coloured? Lanthanides or more precisely lanthanides ions are coloured mainly because of their partly filled f orbitals. This allows a certain wavelength from the visible region of the spectrum to be absorbed which leads to the formation of f-f transition. Is lanthanides are Colourless? […]

Is jumping a normal force? When we jump, the chemical energy in our muscles get converted to kinetic energy that exerts a force on the ground (that using Newton’s 3rd law), will trigger a reaction that will ‘push’ us up- and thus a jump. This resultant normal force = Mass x Distance of jump. Is […]

What is the difference between tables charts and graphs? Same, but Different Charts present information in the form of graphs, diagrams or tables. Graphs show the mathematical relationship between sets of data. Graphs are one type of chart, but not the only type of chart; in other words, all graphs are charts, but not all […]

How do you hand signal a right turn? For right turns, extend your left arm out the driver’s window with your elbow bent and point your hand to the sky with your palm facing forward. Again, it’s best to keep your arm in this position until you begin your right turn, just as you would […]

What is the error in saying the source of electrons? The drift velocity is the average speed of the electrons as they flow through an electric circuit. What is the error in saying the source of electrons in a circuit is the battery or generator? The source of the electrons in a circuit is the […]

Does biodiesel damage your engine? Engine wear: short-term engine wear when using biodiesel has been measured to be less than that of petroleum diesel. While long-term tests have not been published, engines are expected to experience less wear in the long run when using biodiesel. Is biodiesel expensive to produce? With this feedstock cost, total […]

How do coaches get respect? Getting players on your team to respect you as their new coach takes work, but these tips will make it easier. Aim to motivate, not intimidate. Coach the person, not just the athlete. Be fair and true to your word. Be professional. Win the parents. How do you know if […]

Can I ask a Favour from you? Asking for a favor refers to asking someone to do something for you. Use these phrases to politely ask for a favor. When someone asks you for a favor, you’ll have to either grant it (say yes) or refuse it (say no). Pay special attention to the form […]

Is o2 an ionic compound? An oxygen molecule (O2) is a good example of a molecule with a covalent bond. Ionic bonds occur when electrons are donated from one atom to another. Table salt (NaCl) is a common example of a compound with an ionic bond. You may also learn about a third type of […]