Homework answers and tutorials

Waiting for answer What is an inelastic collision and its formula? Thanks in ad...
In a collision, involving two or more objects, when kinetic of the objectssystem is not conserved but momentum is conserved , we term such a collision as Inelastic Collision . In...
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Waiting for answer Why lead chloride is soluble in hot water but not in cold wa...
In general, most solutes SHOULD be more soluble in hot water. Why? Let's look at the dissolution reaction: ##PbCl_2(s) rightleftharpoons Pb^(2+)(aq) + 2Cl^()(aq)## Strong ionic b...
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Waiting for answer What is the definition of pH?
is the concentration of ##H^+## ions in a solution. This is mainly used to find how strong of an acid you have. Here is a video of an lab which measures pH of many common substances using a pH meter and an indicator made from cabbage juice! Video from: Noel Pauller
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Waiting for answer What is the function of cartilage in the lung? Where is cart...
It's to keep the bronchi open. The cartilage is found lining the bronchi in order to keep them open. This isn't like the cartilage in the rest of your body. It's actually a lot thinn...
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Waiting for answer What are the symptoms of alcohol poisoning? What are the lon...
Answers in explanation. For alcohol poisoning, it an acute condition obtained by drinking high concentrations of alcohol in a short period of time. If this happened in a party and ev...
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Waiting for answer What is momentum? (Please don't limit it by saying that it i...
Quantity of movement Momentum is also known as quantity of movement (atleast in my language they are synonyms). In other words, it is the way of quantifying the movement that an obje...
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Waiting for answer How do you balance a single replacement reaction?
You balance the equation for a single replacement reaction the same way as any other equation. You place coefficients in front of the chemical formulas so that the numbers of atoms of the are the same on both sides. Example 1. ##"Na"("s")## + ##"ZnCl"_2("aq")"## ##rarr"## ##"NaCl"("aq")## + ##"...
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Waiting for answer All atoms of a given element contain the same number of prot...
All atoms of a given element contain the same number of PROTONS. The atoms of a given element may contain DIFFERENT number of neutrons. The number of PROTONS, massive, positively...
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Waiting for answer What is the difference between linear velocity and angular v...
Linear velocity (V) is a length displacement for a time (metres per second) Angular velocity (W omega) is an angle displacement for a time ( radians per second) Both can be related in the case where the object is moving about a point of rotation at a radius r. ##V=W*r## I you consider the relationsh...
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Waiting for answer How does the radius affect the moment of inertia?
The greater the radius, the greater the moment of inertia. The formula for the moment inertia of a disk is ##I=mr^2## If you double the radius, the moment of inertia increases 4 times.
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Waiting for answer Why did China have a favorable balance of trade with Great B...
Through its long history, China has often considered the rest of the world to be barbaric and has traditionally limited trade; in the 19th Century, this became a major problem. The t...
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Waiting for answer How are meteoroids, meteors and meteorite related?
Please see below in explanation: I will explain you each by which you can understand what they are. ##1.## Meteoroids  Meteoroids are similar to an asteroid, but significantly s...
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Waiting for answer How do you write ##y=2x+1## in standard form?
The standard form of a linear equation is ##ax + by = c## We can transpose ##2x## to the left hand side to get ## y  2x = 1## ## 2x + y = 1## Multiplying both sides with ##1## gives us ##color(green)(2x  y = 1## is the Standard form of ##y=2x+1##
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Waiting for answer What are quarks made of?
Quarks are so far considered to be elementary (No further constituents). However, the string theory advocates the presence of further elementary structures (the so called string like entities) which make up quarks. String theory has so far not been satisfactorily verified by experimental physicists....
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Waiting for answer How do you find the area between two curves using integrals?
First, you will take the integrals of both curves. Next, you will solve the integrals like you normally would. Finally, you will take the integral from the curve higher on the graph and subtract the integral from the lower integral. Take for example we have two functions ##f(x)=32x^2## and ##g(x...
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Waiting for answer What were the Jim Crow laws?
The Jim Crow Laws were laws that discriminated against African Americans and were designed to preserve White privilege in the southern states of the United States. The Jim Crow laws...
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Waiting for answer Is the earth slowly getting closer to the sun as it orbits i...
Actually are slowly moving away from . But the effect is very small, only about 0.01% in a billion years for Earth. There are two main mechanisms driving the planets away from the...
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Waiting for answer When did the Korean War start?
The Korean War started June 25, 1950. The Korean War (19501953) was kindled when the Communist Party of North Korea crossed the 38th Parallel and took over South Korea (nonCommuni...
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Waiting for answer Some examples of hypertonic,hypotonic and isotonic solutions...
hypertonic to man salt water, hypotonic freshwater, isotonic same concentration of blood the osmosis takes place due to gradient difference and is with reference to the blood of the...
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Waiting for answer What is the square root of 1.69?
##1.3## ##sqrt(1.69)=sqrt(169/100)=sqrt(13^2/10^2)=13/10=1.3##
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