Category: Physics

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 is the relationship between the sun and the atmosphere? The Sun warms our planet, heating the surface, the oceans and the atmosphere. This energy to the atmosphere is one of the primary drivers our weather. Our climate is also strongly affected by the amount of solar radiation received at Earth. How does the ocean […]

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 […]

Are of light strikes a plane mirror at an angle of 40 degree to the mirror surface What will be the angle of reflection? A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection? Now, we know that according to the […]

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 […]

Is running 3km a day enough? Your body will become increasingly able to run 3km. That’s not very far, in terms of exercise. A little under 2 miles, or, at most folk’s running pace, perhaps 16–20 minutes of work. That’s not bad… But for many people once you got to that point it would be […]

How many oxygen atoms are in 1g of CO2? two oxygen atoms How do you determine the number of oxygen atoms in CO2? of oxygen atoms in 88 g of CO2 contains is 2×2×6.022×1023 atoms. Hence, the no. of oxygen atoms present in 88 g of CO2 is 2.41×1024 atoms. Now, we know that one […]

What is the best type of energy storage? Lithium-ion batteries What are the main methods of energy storage? Energy can be stored in a variety of ways, including: Pumped hydroelectric. Electricity is used to pump water up to a reservoir. Compressed air. Electricity is used to compress air at up to 1,000 pounds per square […]

What would a historian most likely do to piece together clues about the human past quizlet? A historian most likely would piece together clues about the human past by studying written records. What kinds of excavations might be found underwater? As a result, underwater archaeological sites cover a vast range including: submerged indigenous sites and […]

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 […]