Is a pencil sharpener a system? why a pencil SHARPENER consists of 2 simple machines: The old fashioned pencil sharpeners that are mounted to the wall and cranked by a handle are an example of a compound machine that consists two simple machines: the wheel and axle and a wedge. What type of lever is […]
Who first invented the battery?
Who first invented the battery? Alessandro Volta When did Alessandro Volta create the battery? 1800 What did the first battery look like? “This was the first battery that we know of, and it was basically a clay jar with a copper cylinder, probably surrounded by lemon juice or something like that.” Supposedly discovered in 1936, […]
Where in the sky is the Christmas star?
Where in the sky is the Christmas star? Those looking to see the star will want to look above the southwestern or western horizon after sunset, experts said. Why is it called the Christmas Star? The Star of Bethlehem, or Christmas Star, appears in the nativity story of the Gospel of Matthew where “wise men […]
Can you die from swimming in the Dead Sea?
Can you die from swimming in the Dead Sea? Is it possible to drown in it? Although whoever enters the water immediately floats, you should keep in mind that it is still possible to drown in the Dead Sea. This happens when swimmers get caught in strong winds, flip over and swallowing the salty water. […]
What are flood basalts associated with?
What are flood basalts associated with? Flood Basalts are high volume eruptions that flood vast areas of the Earth, covering broad regions with flat lying lava surfaces. When flood basalts are forming above continents they fill rift valleys via giant fissures that split the continent. Are flood basalts Polygenetic? A flood basalt province, built from […]
What are the 10 advantages of computer?
What are the 10 advantages of computer? What are the advantages of using a computer? Increase your productivity. Connects you to the Internet. Can store vast amounts of information and reduce waste. Helps sort, organize, and search through information. Get a better understanding of data. Keeps you connected. Help you learn and keep you informed. […]
What are the different ocean currents that carry warm water give at least three examples?
What are the different ocean currents that carry warm water give at least three examples? They carry warm water from the tropics poleward. Examples include the Gulf Stream, the Agulhas Current, and the Kuroshio. Cold currents flow toward the equator on the eastern side of ocean basins. What is the purpose of prevailing winds? Due […]
Can 2 angles be supplementary if both of them are obtuse?
Can 2 angles be supplementary if both of them are obtuse? As we know that obtuse angle is always greater than 900. So, the sum of two obtuse angles always makes greater than 1800. ∴Sum of two obtuse angles cannot make a supplementary angle. Can two angles be supplementary if both of them are? Thus, […]
Why are rabbits r-selected species?
Why are rabbits r-selected species? So this begs the question are rabbits truly prolific, and why? In Page 2 the 1960s two ecologists came up with r/K selection theory. It relates to parental investment and reproductive strategies adopted by species in order to advance its kind into the future. And they have the ability to […]
What are the 5 steps of muscle contraction?
What are the 5 steps of muscle contraction? Terms in this set (5) exposure of active sites – Ca2+ binds to troponin receptors. Formation of cross-bridges – myosin interacts with actin. pivoting of myosin heads. detachment of cross-bridges. reactivation of myosin. What are the 7 steps of muscle contraction? Terms in this set (7) Action […]