Homework answers and tutorials

Waiting for answer The diameter of Earth, about 8,000 miles, is about 4 times t...
The diameter of the moon is approximately 2,000 miles. First, because we are solving for the approximate diameter of the moon, let's call the variable representing the diameter of th...
$10.00 
Waiting for answer The diameter of a steel rod is given 56 + 0.2 mm. What does...
It means there is an error in the measurement of the diameter of rod which ranges from +0.2 to 0.2 , that is the length of the rod can be 55.8 mm or 56.2 mm.
$10.00 
Waiting for answer What is the net ionic equation of the reaction of ##FeCl_2##...
##"Fe"^(2+) (aq) + "2OH"^()(aq)## → ##"Fe(OH)"_2(s) ## Step 1. Write the word equation for the reaction. ##"FeCl"_2## reacts with ##"NaOH"## to produce ##"Fe(OH)"_2## and ##"NaC...
$10.00 
Waiting for answer A sample of 0.0512 mol of iron(III) chloride, FeCl3, was dis...
##"2.05 moles/L"## is defined as ##"molarity" = "No. of Moles"/"volume of solution in liters"## In your case, you have ##"molarity" = ("0.0512 moles of FeCl"""_...
$10.00 
Waiting for answer In the figure, one end of a uniform beam of weight 420 N is...
##a)T=420 . cos 29=367.34 N## ##b)## ##"horizontal component of net force :"98,716 . sin 2 theta=83,716 N## ##c)## ##"vertical component of net force :"98,716 .cos 2 theta=52,312N##...
$10.00 
Waiting for answer How can I draw a perspective formula for ( S )2chlorobutan...
You can draw using different projections such as wedgedash, sawhorse projection,fishcher,newman projection etc.,these are only for chiral carbon atoms(not necessarily optically active). This is a wedgedash projection.In this the least atomic no. atom is put as a dash (this means that the other at...
$10.00 
$10.00

$10.00

Waiting for answer What is a phrase in words for 42s?
The product of 42 and s 42 times s 42 multiplied by s ##42s## represents the number ##42## multiplied by the variable ##s##. Some of the word phrases for this are: The product of...
$10.00 
Waiting for answer How do you find an equation of the tangent line to the curve...
Try this: Graphically:
$10.00 
Waiting for answer Approximately how many Americans died during the Vietnam War...
58,315 https://en.wikipedia.org/wiki/Vietnam_War_casualties American Armed Forces personnel The number of Americans that died can be fair accurately determined since they were membe...
$10.00 
Waiting for answer How do you convert 355 kJ to cal?
##"1 calorie"## ##=## ##4.184*J## And thus ##355*kJ## ##=## ##355xx10^3*Jxx1/(4.184*J*cal^1)## ##~=## ##8500*cal##
$10.00 
Waiting for answer During a lunar eclipse, what color is the moon?
During a total lunar eclipse the Moon typically turns ##\color(red){"red"}##. That's because the "shadow" of the Earth is not completely dark. Our atmosphere acts like a weak lens t...
$10.00 
Waiting for answer What substance is produced by the ceruminous glands?
Ear wax (when mixed with sweat and dead skin cells) Ceruminous glands produce a substance that when mixed with sweat and dead skin cells, becomes cerumen, which is otherwise known as...
$10.00 
Waiting for answer What are some of Cinderella's character traits?
I am going to illustrate this question with the typical fairytale story of Cinderella. Please note that this is not the Disney version. So, obviously, one of the traits most well kno...
$10.00 
Waiting for answer What is the net ionic equation that represents a neutralizat...
##2H^+ (aq) +2OH^####(aq)  2H_2O (l)## First step is to predict the products side of the reaction and then balance the equation . Take note of solubility rules when predicting pro...
$10.00 
Waiting for answer Is calcium oxide (CaO) an ionic compound or covalently bonde...
It is an ionic compound. An ionic bond is between a metal and nonmetal , while a covalent bond is between two or more nonmetals. Calcium, a metal element, is bonded to the nonmeta...
$10.00 
Waiting for answer How do you solve for y: ##2x – 3y = 6##?
##2x6/3 = y## Move ##3y## to the right side and ##6## to the left side. then ##6## will become ##6## and ##3y## will be ##+3y.## ##2x6=3y## Then put ##3## below ##2x6## ##(2x6)/3 = y## in order to get the value of ##y## Simplify further: ##y=2/3x 2##
$10.00 
Waiting for answer How do you find the derivative of ##cotx##?
##dy/dx = csc^2x## ##y = cotx## ##y = 1/tanx## ##y = 1/(sinx/cosx)## ##y = cosx/sinx## Letting ##y= (g(x))/(h(x))##, we have that ##g(x) = cosx## and ##h(x) = sinx##. ##y' = (...
$10.00 
Waiting for answer Is the fuel efficiency (in miles per gallon) of an automobil...
Continuous an easy way to check if your data is discrete of continuous is to ask yourself, will my result be a ##RR## number? if so, then your data will most likely be continuous, as you could end up with ##oo## many different results. which in this case, you could go ##3.4657## miles per gallon....
$10.00