How high can an airplane fly? 31,000 to 42,000 feet How do planes avoid birds? Birds can detect airplane landing lights and weather radar and avoid the airplane. Airplane colors and jet engine spinner markings help to repel birds. Birds seek to avoid airplanes because of aerodynamic and engine noise. Do planes kill birds? Planes […]
What is the largest part of an atom?
What is the largest part of an atom? nucleus What element has 9 protons and 10 neutrons? fluorine atoms What element has 18 protons and 22 neutrons? Name Argon What element has 9 protons and 9 Neutrons? Name Fluorine What is the number at the end of an isotope’s name? Answer Expert Verified The number […]
What is the main function of the stamen in a flower?
What is the main function of the stamen in a flower? Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a […]
What shade of clay is the purest form?
How many half-lives until a drug is out of your system?
How many half-lives until a drug is out of your system? Even further, 94 to 97% of a drug will have been eliminated after 4 to 5 half-lives. Thus, it follows that after 4 to 5 half-lives, the plasma concentrations of a given drug will be below a clinically relevant concentration and thus will be […]
Which continent is located at 40 North and 20 East?
Which continent is located at 40 North and 20 East? The 40th parallel north is a circle of latitude that is 40 degrees north of the Earth’s equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. What city is 41 degrees north and 74 degrees west? […]
Is calcium fluoride acidic or basic?
Is calcium fluoride acidic or basic? CaF2 is slightly basic. The reason is HF is a weak acid ( but it is very corrosive). When dissolved in water, the F- ion formed will undergoes hydrolysis reaction with water molecules forming HF and OH-. Thats why, it is basic. Does calcium fluoride dissolved in water? Calcium […]
Is obesity a disease or a choice?
Is obesity a disease or a choice? Obesity is a chronic disease. According to the Centers for Disease Control and Prevention, obesity affects 42.8% of middle-age adults. Obesity is closely related to several other chronic diseases, including heart disease, hypertension, type 2 diabetes, sleep apnea, certain cancers, joint diseases, and more. What is obesity What […]
Why are there often so many steps between the original signal event in the cells response?
Why are there often so many steps between the original signal event in the cells response? Why are there often so many steps between the original signal event and the cell’s response? Each step in a cascade produces a large number of activated products, causing signal amplification as the cascade progresses. they amplify the original […]
What is role of He in this laser?
What is role of He in this laser? Rami Arieli: “The Laser Adventure” The role of the Helium gas in He-Ne laser is to increase the efficiency of the lasing process. Two effects make Helium particularly valuable: The direct excitation of Neon gas is inefficient, but the direct excitation of He gas atoms is very […]