What causes resistance in a wire? The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions as they pass through. […]
Why did US not join League of Nations?
Why did US not join League of Nations? The League of Nations was established at the end of World War I as an international peacekeeping organization. Although US President Woodrow Wilson was an enthusiastic proponent of the League, the United States did not officially join the League of Nations due to opposition from isolationists in […]
How many pounds of nitrogen per acre are needed for corn?
What are the 5 steps of the hydrologic cycle?
What are the 5 steps of the hydrologic cycle? Student Features. Many processes work together to keep Earth’s water moving in a cycle. There are five processes at work in the hydrologic cycle: condensation, precipitation, infiltration, runoff, and evapotranspiration. These occur simultaneously and, except for precipitation, continuously. Why is hydrologic cycle important? The hydrologic cycle […]
How do electrolytic cells work?
How do electrolytic cells work? An electrolytic cell converts electrical energy into chemical energy. Here, the redox reaction is spontaneous and is responsible for the production of electrical energy. The reaction at the anode is oxidation and that at the cathode is reduction. Here, the anode is positive and cathode is the negative electrode. What […]
Is hail a solid or liquid?
Which element stops fusion in a high mass star?
Which element stops fusion in a high mass star? iron What stars High Mass? High mass stars (stars with masses greater than three times the mass of the Sun) are the largest, hottest and brightest Main Sequence stars and blue, blue-white or white in colour. Supernovae release these elements into space making them available to […]
What is the relationship between volume and pressure for a gas?
What is the relationship between volume and pressure for a gas? It is summarized in the statement now known as Boyle’s law: The volume of a given amount of gas held at constant temperature is inversely proportional to the pressure under which it is measured. Are volume and temperature directly proportional? The volume of a […]
What stage of sleep is hardest to awaken?
What stage of sleep is hardest to awaken? It is most difficult to awaken people from slow-wave sleep; hence it is considered to be the deepest stage of sleep. Following a period of slow-wave sleep, however, EEG recordings show that the stages of sleep reverse to reach a quite different state called rapid eye movement, […]
What is blue light and why is it bad?
What is blue light and why is it bad? Continued exposure to blue light over time could damage retinal cells and cause vision problems such as age-related macular degeneration. It can also contribute to cataracts, eye cancer and growths on the clear covering over the white part of the eye. What does blue light symbolize? […]