Category: Physics

Can aluminum be magnetized? In our everyday experience aluminum doesn’t stick to magnets (neither does copper). Most matter will exhibit some magnetic attraction when under high enough magnetic fields. But under normal circumstances aluminum isn’t visibly magnetic. Why is stainless steel jewelry so cheap? Stainless steel not only mimics the look of fine, precious metal, […]

What are the factors affecting the solubility? Solubility is the maximum amount of a substance that will dissolve in a given amount of solvent at a specific temperature. There are two direct factors that affect solubility: temperature and pressure. Temperature affects the solubility of both solids and gases, but pressure only affects the solubility of […]

What is the primary use of the following agar slant agar deep broth? What is the primary use of slants? Provides a solid growth area that is easier to store. What is the primary use of deeps? Used to grow bacteria that needs less oxygen. What are agar deep used for? Agar deeps are used […]

Can you fail fifth grade? Will I fail the 5th grade? No, you won’t fail 5th grade. But honestly, you may be missing the point. If you made an F in math, you really need to find out why and correct your performance. What age are 5th graders? 10 years old Can a 12 year […]

Which WiFi frequency is best? Ideally, you should use the 2.4GHz band to connect devices for low bandwidth activities like browsing the Internet. On the other hand, 5GHz is the best suited for high-bandwidth devices or activities like gaming and streaming HDTV. What is the advantage of having WiFi in your car? Benefits of car […]

What is DNA as genetic material? DNA, deoxyribonucleic acid, is the genetic material in your cells. It was passed on to you from your parents and determines your characteristics. Where is genetic material found? The genetic material of a cell or an organism refers to those materials found in the nucleus, mitochondria and cytoplasm, which […]

What is the primary rule of soccer? The two basic soccer rules for a proper throw-in are to have both feet on the ground and to throw the ball with both hands over the head. For teaching purposes it is common to allow players under the age of 8 to take more than 1 attempt. […]

Is freezing point depression positive or negative? The change in the freezing point is proportional to the amount of solute added. This phenomenon is called freezing point depression. The change in the freezing point is defined as: ∆Tf = Tf,solution − Tf,solvent. ∆Tf is negative because the temperature of the solution is lower than that […]

What does emission mean? An emission is something that has been emitted—released or discharged. In general, emissions consist of things like gas, liquid, heat, sound, light, and radiation. This exhaust is just one form of carbon emissions—greenhouse gases from various sources that are known to contribute to global warming and climate change. What is emissions […]

Why is light important for humans? Earth has been bathed with light from the Sun ever since; it is our most important source of energy. Sunlight warms us, causes weather patterns, allows plants to manufacture oxygen and our food from carbon dioxide and water, and it allows us to find our way around in the […]