Category: Physics

What is the input of a machine? Simple Machines | Short/Long Answer Questions Work input is work done on a machine to get the desired output. Work output is the amount of desired work that is done by a machine. For an ideal machine, the work output is equal to the work input i.e the […]

What happens to light rays as it passes through a convex lens? Convex Lens. Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal […]

Where is the epicenter of the earthquake? epicenter. The epicenter is the point on the earth’s surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins. Which point is nearest to the epicenter? The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is […]

What is the half life of isotope B? There are 13 radioisotopes that have been discovered, with mass numbers from 7 to 21, all with short half-lives, the longest being that of 8B, with a half-life of only 770 milliseconds (ms) and 12B with a half-life of 20.2 ms. All other isotopes have half-lives shorter […]

Is no thanks rude? In America, “no thanks” isn’t rude as long as you say it in a pleasant manner. You could also say, “No, I’m good, thanks”, or “No, i’m ok.” Of course you can always say “No thank you” if you are worried about it. Is it OK to say no thanks? No […]

How do you find f1 and f2 when given the median? N = total student, f = frequency of the class containing median, cf = cumulative frequency before the median class, h = class interval…. Age (in years) Frequency (f) Cumulative Frequency (cf) 20 – 30 25 35+f1 30 – 40 30 65+f1 40 – […]

How do you use data to inform your instruction? 4 Ways Student Data Can Inform Instruction Use Data to Identify At-Risk Students. When it comes to at-risk students, early detection is critical. Use Data to Close the Learning Gap. Use Data to Predict Student Achievement on End-of-Year Targets. Use Data to Promote Success in Subsequent […]

What are the 3 major types of galaxies? Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars. What is older than the universe? Our Sun is […]

What do you mean by central orbit? A central orbit is an orbit in which the attractive force between a central mass and test mass is a central force, i.e., is directed towards the central mass. A general central force law is therefore given by. (1) for any function f(r), where is the force per […]

What does bully for you mean? To treat in an overbearing or intimidating manner. To force one’s way aggressively or by intimidation. : : : : ADJECTIVE: Excellent; splendid. : : INTERJECTION: Used to express approval: Bully for you! Does bully mean good? (US, slang) Very good; excellent. A bully horse. (slang) Jovial and blustering; […]