What countries use coal for electricity? Top coal-fired power generating countries China. Producing 4,360.9TWh of power from coal-fired facilities, China occupies the first place in the list. US. The US continues to generate a significant amount of its electricity from coal. India. Japan. South Korea. How much energy is in 1kg of coal? 1kg of […]
What happens if 2 objects have the same speed but different velocities?
What happens if 2 objects have the same speed but different velocities? Objects have the same velocity only if they are moving at the same speed and in the same direction. They represent objects that have different velocities only because they are moving in different directions. A and C represent objects that have different velocities […]
Why does the ray of light passing through the optical Centre of a lens not get any deviation?
Why does the ray of light passing through the optical Centre of a lens not get any deviation? The ray passing through optical center does no deviate because the curvature of the Lens at the incident and exit point are exactly opposite so the deviation at the first point is cancelled at the other point. […]
Are all atoms the same in an element?
What is it called when two waves interact with the crests of one aligning with the troughs of the other?
What is it called when two waves interact with the crests of one aligning with the troughs of the other? When two waves meet in such a way that their crests line up together, then it’s called constructive interference. The resulting wave has a higher amplitude. In destructive interference, the crest of one wave meets […]
What are the two most important properties of stars?
What are the two most important properties of stars? A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass. Brightness. Two characteristics define brightness: luminosity and magnitude. Color. A star’s color depends on its surface temperature. Surface Temperature. Size. Mass. What is the most important characteristic of a star […]
What is a dumb question?
What is a dumb question? Dumb questions are simple questions that probe the obvious, and simultaneously challenge and direct our thinking. Dumb questions are not accusatory or argumentative statements in disguise. Nor are they formulated with preconceived answers in mind. Rather, they are probing yet open. What is the world’s stupidest question? The 30 Dumbest […]
What can cause a population to be in a uniform distribution?
What can cause a population to be in a uniform distribution? Uniform patterns of dispersion are generally a result of interactions between individuals like competition and territoriality. Clumped patterns usually occur when resources are concentrated in small areas within a larger habitat or because of individuals forming social groups. What are the factors for population […]
Can we sleep during grahan?
Can we sleep during grahan? Among many things, people often wonder if they can sleep during the solar eclipse. However, it is a myth that says one should not sleep during a solar eclipse. As per a study, solar eclipse causes daytime darkness, which affects the sleep pattern. Why solar eclipse is dangerous? During a […]