Category: Physics

How do you know if a sample is representative? A representative sample should be an unbiased reflection of what the population is like. There are many ways to evaluate representativeness—gender, age, socioeconomic status, profession, education, chronic illness, even personality or pet ownership. What percentage of sample is representative? For example, in a population of 1,000 […]

Why do we use 8.314 as the value for R? R = 8.314 is actually the more important value because it is expressed in SI units (note that 1 J = 1 Pa * m^3= 1 N/m^2 * m^3 = 1 N * m). What does R mean in chemistry? R group: An abbreviation for […]

Do neurons allow us to think? In short, our nervous systems detect what is going on around us and inside of us; they decide how we should act, alter the state of internal organs (heart rate changes, for instance), and allows us to think about and remember what is going on. To do this, it […]

Can you run jet fuel in a diesel? Jet fuel (there’s variants, but a very common one is known as Jet A) is really close to regular old diesel fuel. And, for that matter, kerosene. You can even run it straight in your diesel car or truck, though it doesn’t lubricate as well so if […]

What is the declination of the sun on March 21st? 0º What is meant by declination? 1 : angular distance north or south from the celestial equator measured along a great circle passing through the celestial poles. 2 : a turning aside or swerving. 3 : deterioration moral declination. What is a longitude line? Longitude […]

What is satellite moving in an orbit around the Earth the ratio of kinetic energy to potential energy is? Hence, the ratio of kinetic energy to potential energy is 21​ Was this answer helpful? What is the ratio of kinetic energy and potential energy of a satellite? For the satellite moving in an orbit around […]

Why might a bright yellow solid form when two clear colorless liquids are mixed? Explanation: When two substances (can be aqueous or liquids) in solution react, they yield a solid and an aqueous compound. This is a double displacement reaction in which the solid is known as a precipitate. Can two solids react to form […]

What is the charge on the 2uf capacitor? Answer. Answer :- No charge flows in 2uf capacitor at steady state. In steady state there is no charge which flows in capacitor. What is charge of 3 uF capacitor in steady state? In the circuit shown, the charge on the 3uF capacitor at steady state will […]

What is the basic source of magnetism? The source of magnetism is the electric charges. The movement of the electric charge causes magnetism. Substances are made from tiny atoms. These atoms have protons, electrons and neutrons. Where is magnetism found? A very common source of magnetic field found in nature is a dipole, with a […]

Does a box plot show the mean? A boxplot, also called a box and whisker plot, is a way to show the spread and centers of a data set. Measures of spread include the interquartile range and the mean of the data set. Measures of center include the mean or average and median (the middle […]