Category: Physics

Do scientists need to write well? Thus the scientist must not only “do” science but must “write” science. Although good writing does not lead to the publication of bad science, bad writing can and often does prevent or delay the publication of good science. Do scientists write a lot? Scientists should be encouraged to read […]

What are the two types of elements that make up an ionic compound? Ionic Bonds An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. Which […]

What can represent a decomposition reaction? A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and […]

Are there water tables everywhere? Some water underlies the Earth’s surface almost everywhere, beneath hills, mountains, plains, and deserts. The ground above the water table (the pink area) may be wet to a certain degree, but it does not stay saturated. Where is the most freshwater on Earth? Brazil What is Earth’s largest source of […]

What are the effects of residential segregation? The effects of residential segregation are often stark: blacks and Hispanics who live in highly segregated and isolated neighborhoods have lower housing quality, higher concentrations of poverty, and less access to good jobs and education. Why is residential segregation important? Residential segregation is important because it is associated […]

What are the basic components of a pneumatic system? Main Components of a Pneumatic System All pneumatic systems use compressed air to operate and move parts or actuators. Here are the common parts of a pneumatic system: Check Valves. Compressor. Regulators and gauges. Accumulator or buffer tank. Feed lines. Actuators. What are the 6 basic […]

Are there any medications that alter DNA? The FDA just approved the first drug, Luxterna, to cure a rare form of genetic blindness by changing DNA. It’s not the first gene therapy ever approved (it’s third), but it is the first time the FDA has ever approved an injected drug that changes the inherited DNA […]

How much DNA is in a virus? Eight percent of our DNA consists of remnants of ancient viruses, and another 40 percent is made up of repetitive strings of genetic letters that is also thought to have a viral origin.” How are viruses created? Viruses may have arisen from mobile genetic elements that gained the […]

How do you identify a CBE in a transistor? In plastic casing, one side of the transistor is Flat which is the front side and the pins are arranged serially. To identify the pins, keep the front flat side facing you and count the pins as one, two etc. In most NPN transistors it will […]

Will baking soda solution turns red litmus blue? Answer: Baking soda solution will turn red litmus blue. What does blue litmus paper do when a basic solution like Naoh is dropped onto it? Answer. Answer: Blue Litmus will change into red if it is added in sodium hydroxide. What will you notice if a drop […]