What is a lowest energy? These zones are known as energy levels (or sometimes called electron shells). At the lowest energy level, the one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals; a 2s, 2p1, 2p2, and a […]
How is oxygen maintained in the atmosphere?
How is oxygen maintained in the atmosphere? The balance of oxygen and carbondioxide is maintained in the atmosphere by the oxygen released by plants during photosynthesis and carbondioxide released by human,animals etc. in the atmosphere. The balance of oxygen and carbondioxide is made due to respreration and photosinthesis. How did we get oxygen in our […]
What is the resistance across A and B in the Fig 1 point?
What is the resistance across A and B in the Fig 1 point? ⟹ RAB=4+44×4=2Ω What is the total resistance between points A and point B given below circuit? Therefore, the total resistance in the circuit is 4+4+2=10 ohms. What is resistance between A and B? The three resistance of 20 ohm, 10 ohm and […]
What is a physical standard?
What is a physical standard? A quantitave estimation taken to analyze all of the requirements which must be fulfilled for any production process to take place. For instance, the requirements of the machine, the method of calculating the labor as well as the main method used to determine the standard costs are all known as […]
What are the advantages of living near a volcano?
What are the advantages of living near a volcano? volcanic rock and ash provide fertile land which results in a higher crop yield for farmers. tourists are attracted to the volcano, which increases money to the local economy. minerals are contained in lava, eg diamonds – these can be mined to make money. What are […]
Which of the following is the best example of one way carbon progresses through the carbon cycle?
Which of the following is the best example of one way carbon progresses through the carbon cycle? carbon dioxide through respiration. Plants take in carbon dioxide and turn it into. carbohydrates during photosynthesis. What human activity produces the greatest amount of carbon dioxide? Main sources of carbon dioxide emissions 87 percent of all human-produced carbon […]
Which metal is used to make car bodies?
Which metal is used to make car bodies? The main materials used for making cars, parts and components, along with future trends, are steel, aluminum, magnesium, copper, plastics and carbon fibers. The prime reason for using steel in the body structure is its inherent capability to absorb impact energy in a crash situation. What is […]
What causes the temp to decrease with height in the mesosphere?
What causes the temp to decrease with height in the mesosphere? Within the mesosphere, temperature decreases with increasing height, due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth’s atmosphere. Does temperature increase […]
Which is oldest era?
Which is oldest era? Paleozoic Era What are the four eras? The Precambrian, Paleozoic, Mesozoic, and Cenozoic Eras The Geologic Time Scale is the history of the Earth broken down into four spans of time marked by various events, such as the emergence of certain species, their evolution, and their extinction, that help distinguish one […]