Category: Physics

Where was the node in the Tacoma Narrows Bridge collapse? In the case of Tacoma Narrows, there was a node (no twisting) exactly at the middle of the center span. How long did the Tacoma Narrows Bridge last? After 29 months of construction, a new and much safer Tacoma Narrows Bridge opened on Oct. 14, […]

What will happen to the pressure of a contained gas if its temperature is lowered? How does a decrease in temperature affect the pressure of a contained gas? The pressure decreases because the kinetic energy decreases with the temperature and slower moving particles impact the walls of a contain with less energy. Which three factors […]

What is called electric resistance? In electronics and electromagnetism, the electrical resistance of an object is a measure of its opposition to the flow of electric current. The reciprocal quantity is electrical conductance, and is the ease with which an electric current passes. Does 240V need a neutral? A 240V load needs two “ungrounded conductors”, […]

What does fully ionized mean? When referred to an atom, “fully ionized” means that there are no bound electrons left, resulting in a bare nucleus. Regular stars largely contain hydrogen and helium that are fully ionized into protons (H+) and alpha-particles (He2+). Which element would have the highest ionization energy? helium What is Fluorines ionization […]

What type of reaction is CaCO3 HCl CaCl2 H2CO3? This is an acid-base reaction (neutralization): CaCO 3 is a base, HCl is an acid. , [Note: Often used in an aqueous solution.] ; Colorless to slightly yellow gas with a pungent, irritating odor. What kind of reaction is CaCO3 HCl? This is an acid-base reaction […]

What clues did you use to put the continents together? Wegner’s Evidence for Continental Drift Evidence from fossilized organisms and mountain chains can be used to reconstruct the positions of today’s continents and landmasses to form the supercontinent Pangea. Glossopteris ferns had very heavy seeds that could not move by wind or drift on ocean […]

Is 30 degrees water hot? In general, hot water is 130 F (54.4 C) or above. Warm water is between 110 and 90 F (43.3 to 32.2 C). Cold water is generally between 80 and 60 F (26.7 to 15 C). Is it OK to wash towels at 30 degrees? A 30-degree wash is fine […]

On which day are your answering stats reset? Stats including CF score get reset on the 1st of every month (at 12:30 PM). This is to give you a better clarification on how many questions you have solved and skipped in a month. How many questions can you skip on Chegg question and answers? How […]

How do you find initial kinetic energy? Kinetic Energy and Work The kinetic energy of an object is defined as 2 KE = 1/2 * m * v. The kinetic energy of an object depends on its velocity. We can this combination of force and distance work, so KE(final) – KE(initial) = Work done on […]

Is a survey a secondary source? Primary sources are the original documents of an event or discovery such as results of research, experiments or surveys, interviews, letters, diaries, legal documents, and scientific journal articles. diaries and letters. academic articles reporting NEW data and findings. What is secondary data analysis examples? They might search through periodicals, […]