Thursday

April 24, 2014

April 24, 2014

Total # Posts: 311

**Physics**

3. Yellow light travels through a glass block at a speed of 1.97x108 m/s. The wavelength of the light in this type of glass is 3.81x10-7 m. What is the frequency of yellow light?

**Algebra**

$730 at 5.5% compounded quarterly for 6 years

**physics**

A small block is released from rest at the top of a frictionless incline. The distance from the top of the incline to the bottom, measured along the incline, is 3.60 m. The vertical distance from the top of the incline to the bottom is 1.36 m. If g = 9.80 m/s2, what is the acc...

**math**

54 divi 106

**Math**

A flat screen television is sized depending on the length of the diagonal (ex: a 40 inch flat screen has a 40 inch diagonal ). If a 32 inch television has a width that is 5 inches longer than its length. Determine the dimensions of the television (using exponential applications)

**business law**

Adam Chandler, star pitcher for the Olney Jayhawks, was warming up in the bull pitches to a catcher, during game 3 of the World Series where they were facing their hated rivals the Texas Loudmouths. Throughout this warm-up, the Texas fans were being very crude and obnoxious, a...

**Math**

I am a number between 300-600. When you add my digits together, I am greater than 11 but less than 16. what number (s) am I?

**college algebra**

Find all real solutions of the equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) x4 + 27x = 0

**Math**

Karen is 8 years old and Kate is 9 years old. What will Kate's age be when the total of the digits in both their ages is 17?

**Math**

4 accounting majors, 2 economics majors and 3 marketing majors have an interview for5 different positions with a large company. Find the number of dfferent ways that 5 of these could be hired. 4 accounting majors must be hired first then the final position may be chosen from t...

**accounting-income tax**

During the current year, Deborah Baronne, a single individual, paid the following amounts: Federal income tax $10,000 State income tax $4,000 Real estate taxes on land $1,400 State sales tax $2,000

**Statistics**

The next three questions refer to the following situation. Data from previous years reveal that the distribution if first exam scores in an introductory statistics class is approximately normal with a mean of 72 and a standard deviation of 12. 16) Given that the passing score ...

**Math ASAP**

to calculate the surface area of a prism= 6as+6sh=6as=Ph (a=apothem length, s=side, h=height)

**Algebra**

Simplify the expression: (w+5)^2 My answer: w^2+25

**Science**

Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much?

**algebra**

i WAS TRYING TO FIGURE OUT HOW TO GET THE LENGTH OF A SIDE OF A CUBE WHEN THE VOLUME IS 800CM^3

**math**

Nancy made the following statement: The range of f(x) = ax + b is the set of all real numbers given that a and b are real numbers. Which produces a counter example to her statement?

**SCI/241**

Create a 9- to 12-slide Microsoft® PowerPoint® presentation that focuses on the use, benefits, and risks associated with dietary supplements. What are dietary supplements? · What are some benefits of taking dietary supplements? · What are some risks from ...

**math**

find the area of a table top with 7/8 of a foot length and 3/5 of a foot wide.

**statistics**

If you estimate a model y=a + b * x, where the dependent variable Y is measured in billions of dollars and your predictor variable X is measured in percent then "A" represents what?

**math**

How many 3/10 centimeters segments are in 6 and 4/5 centimeters

**non permissable values**

ok that helped thank you

**non permissable values**

i have a hard time understanding the non permissable values could someone please explain. I have solved the following equations but need help determining the values. Also if you could check to see if i did them right it would be alot of help 1. a2+7a+12/a2+4a+4 x a2-a-6/a2-9 (...

**Math - graphing**

so i came up with 14440 people rounded to the nearest whole number. is there a way to check the formula by using the previous information?

**Math - graphing **

i am having trouble with a graphing calculator please help with these two questions 1. a census was taken from 2012 to 2020. the data collected is given in the following table. 2012-2020 L1 l2 0 6000 1 6300 2 6615 3 7012 4 7362 5 7878 6 8429 7 9272 8 10199 a) what is the expon...

**Math**

can someone explain restrictions on a variable i have an equation divide (x^3+5x-18) by (x-2) it got x^2+3 with a remanider of 12 is this correct and what is the restrcition on the varible?

**Math**

can someone explain restrictions on a variable i have an equation divide (x^3+5x-18) by (x-2) it got x^2+3 with a remanider of 12 is this correct and what is the restrcition on the varible?

**Math**

yes thank you i just wasnt sure what they were asking thank you

**Math**

one jar holds 4mls more than twice the volume of the other jar. write an equation

**Math**

i have problems with understand what they are asking in a word problem it goes like this one jar holds 4mls more than twice. The two jars together hold the volume of the other jar. both jars together hold 712ml what is the volume the smallest jar hold.

**Math**

i have problems with understand what they are asking in a word problem it goes like this one jar holds 4mls more than twice. The two jars together hold the volume of the other jar. both jars together hold 712ml what is the volume the smallest jar hold.

**algebra**

and part a iswhere x is the multiplication.

**algebra**

yes they should be.... so that would make sense what about the first equation?

**algebra**

i am having trouble understaing how to write these out in simplest form please help a. 7^3x7^2x8^5/ 8^4x7x8^-7 for this i got 7/8 b. (a^-2b^4c^3)2 can you explain and show me how to do this?

**physical**

Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 84 kg, and the mass of the woman is 68 kg. The woman pushes on the man with a force of 50 N due east. Determine the acceleration (magnitude an...

**Math **

Alice is three times as old as Jack. In 10 years she will be twice as old as Jack. How old are Alice and Jack now? How old will they be in10 years

**English**

What is the full name of the Journal?

**English**

Culture diversity/a mobile workforce command creative leadership, new partnerships, and innovative approaches to integration? I put Culture diversity/a mobile workforce command creative leadership, new partnerships, and innovative approaches to integration; and my teacher said...

**Chemistry**

for each of the following, give an answer with the correct number of significant figures: A. 400 times 185 b. 2.40 divided by 4 times 125 c. 0.825 times 3.6 times 5.1 d. 3.5 times 0.261 divided by 8.24 times 20.0

**math**

we decided on a new logo for shirts,if we had used 4 stripes and 2 colors,how many more logos could we have made than using 3 stripes and 2 colors

**chemistry- What does this symbol mean**

hopefully you can ge the jist of that as it didnt post how i write it out

**chemistry- What does this symbol mean**

This is the chart i filled it out but then i noticed the e thing it looks like this HNO2 E H3O+ NO2- Inital 0.045 0 0 Change 0.0043 0.0043 0.0043 Equl 0.0407 0.0043 0.0043

**chemistry- What does this symbol mean**

ok so for the reaction HNO2(aq)+H20(l) --> H3O=(aq) + No2-(aq) initial- 0 change - 1 Eqil - 1

**chemistry- What does this symbol mean**

could you explain how i would use that in the chart? like if i have HNO2 for example?

**chemistry- What does this symbol mean**

if there is an E symbol with a slash through it on an ICE chart what does it stand for?

**chemistry- What does this symbol mean**

if there is an E symbol with a slash through it on an ICE chart what does it stand for?

**chemistry**

because i have to relate it to the table can inot use a visual experiment to test ph such as color? how about just test hydrogen or hydroxide in a conctration? am i on the right track

**chemistry**

This is an assesment question and im really bad at these, i did the first two questions and now i am stuck. They ask you to design a series of experiments that can be used to confirm the structure and organization of the table of relative strengths of acids and bases. the want...

**chemisrty - ICE CHART DEPOSTION**

isnt the equilibrium of HNO2 0.0407 because the equilibrium of H+ is 0.0043? i am confused if no change occured in the reaction according to the chart...

**chemisrty - ICE CHART DEPOSTION**

How do i find pH of HNO2 i just need a formula to follow cause i cant figure out the equation.

**chemisrty - ICE CHART DEPOSTION**

How do i fill out an ICE chart when iam only given an initial concentration of one reactants and an equilibrium of another reaction? inital 0.045 HNO2(aq) Equilibrium 0.0043 H3O+(aq) NO2(aq) - no information my first thought was to sqaure root .0043 mol/l by 10 to find the cha...

**chemisrty - ICE CHART DEPOSTION**

How do i fill out an ICE chart when iam only given an initial concentration of one reactants and an equilibrium of another reaction? inital 0.045 HNO2(aq) Equilibrium 0.0043 H3O+(aq) NO2(aq) - no information my first thought was to sqaure root .0043 mol/l by 10 to find the cha...

**chemistry**

no i have to teach myself and thats why i was so confused i knew CH3COO would gain a proton but i didnt realize that hcl changed to HCl ==> H3O^+ + Cl^- so it makes a little more sense.I do wanna make sure i understand and i have troubles breaking down the entities. i may a...

**chemistry**

testing bronsted lowry reaction predictions...... im super stuck can someone help me steo by step how to figure this out assuming i use the 5 step process? write a balanced chemical equation for ch3coona and hcl reaction position of equilibrium. I know that ch3coo is a SB and ...

**English**

Well positive points of having the gap between rich and poor

**English**

What are the minor affirmative claims to the gap between rich and poor widening?

**chemistry - equilibrium Help**

you observed that very little corrosion occurred on the nail immersed in NaOH(aq) solution. This observation is difficult to explain from an electrochemistry perspective since electrochemistry principles predict a spontaneous reaction that should cause corrosion. Explain why t...

**chemistry 30 concentration of a product**

chemical reaction is NOBR2 -->Nog)+B2(g)

**chemistry 30 concentration of a product**

it is nitrosyl bromide

**chemistry 30 concentration of a product**

calculate the concentration of the products of the following equilibrium when the equilibrium constant is 12.3 and the equilibrium concentration of nobr2 is 2.17 mol/l

**Chemistry lab**

just gonna post my answer to see if more can be added or fixed 1. In trail one CaCl2 will react completely (limiting regent) which limits the complete reaction of NaSO4 (excess regent) therefore creating a precipitate of sulfur. In trails 2-4 as the concentrations increase the...

**Chemistry lab**

i should also explain that i know the limiting and excess agents and how after a limited reaction is complete no further reaction can occur leaving an excess regent, and well as dynamix equilbruims however my teacher wants more

**Chemistry lab **

I have spent the last 6 hours trying to figure this out and have talked to my teacher and apparently i canoot get it right as i have to explain sulfate ions other things i dont understand (never took chem before) questions i need help with Na2so4 .05mol/l are reacted with cacl...

**Chemistry 30**

oh im sorry its naso4

**Chemistry 30**

why does the mass of parcipitate not change when concentration of cacl2 are increased (0.05, 0.075,0.10mol/l)when reacted with nacl2 ( .05mol/l)

**AP Chemistry**

What volume of 0.596M K3PO4 is required to react with 29 mL of 0.864 M MgCl2 according to the equation 2K3PO4 + 3MgCl2 -> Mg3(PO4)2 + 6KCl Answer in units of mL

**Organic chemistry recrystallization**

Say you have a substance X will .5 g of X dissolve in 5.0 ml of water if boiled at 80 degrees? And at what temperature will crystals begin to form?

**math**

-3x times x

**Physics**

As a civil engineering intern during one of your summers in college, you are asked to design a curved section of roadway that meets the following conditions: When ice is on the road, and the coefficient of static friction between the road and rubber is 0.077, a car at rest mus...

**Physics**

An airplane is flying in a horizontal circle at a speed of 514.8 km/h. The plane is banked for this turn, its wings tilted at an angle of 41.6° from the horizontal. Assume that a lift force acting perpendicular to the wings acts on the aircraft as it moves through the air....

**Physics**

A 84.0-kg airplane pilot pulls out of a dive by following, at a constant speed of 163 km/h, the arc of a circle whose radius is 312.0 m.

**Physics**

A Ping-Pong ball has a mass of 2.3 g and a terminal speed of 8.2 m/s. The drag force is of the form bv2 What is the value of b?

**Physics**

A 150-g block is projected up a ramp with an initial speed of 5.6 m/s. The coefficient of kinetic friction between the ramp and the block is 0.23.

**Physics**

In the figure below, m1 = 3.8 kg, m2 = 5.2 kg, and the coefficient of kinetic friction between the inclined plane and the 3.8-kg block is μk = 0.3. Find the magnitude of the acceleration of the masses and the tension in the cord.

**Math**

Janet has a pink blouse, a red blouse and a white blouse. She has a pink skirt, a red skirt, a black skirt and a white skirt. How many combinations could she make? My answer is 12 combinations. I mulitiplied 3 blouses times 4 skirts.

**Chemistry**

How many milliliters of 1.5 M NaHCO3 would it take to neutralize 300 mg of Benzoic Acid (C7H6O2)

**Chemistry**

Thanks for the help!

**Chemistry**

How many milliliters of 1.5 M NaHCO3 would it take to neutralize 300 mg of Benzoic Acid (C7H6O2)

**math**

what is y times y? 2y?

**reading**

is there anywhere i can read the story "my first free summer" by julia alvarez online?

**math**

write each number in expanded form 174.273

**Algebra2**

Ahh! I'm confused about this math stuff:/ it's my first time trying these algebra problems. I'm trying to go by the teacher's examples. Can You tell me if these are right:p? 2. (7-√-15)^2 = 34+14i√15i 3.4+√-20 / 2 =2+2.5√4i

**Algebra2**

I got this answer for a problem, and I'm not sure if it's right. Can someone tell me if I'm correct? 1.(2+4i / 3-i) = 6/7+5/7i

**Calculus**

Derivative, my apologies.

**Calculus **

f(x)= 5ln(x)/x^7

**math**

Angle A=60° Angle B ? Angle C 90°

**Calculus**

Thank you, and I was a bit confused. Thanks though!

**Calculus**

find the derivative of the function: f(x)=6ln(x)/x^9

**Calculus**

a piece of wire 12 ft. long is cut into two pieces. one piece is made into a circle and the other piece is made into a square. Let the piece of length x be formed into a circle. allow x to equal 0 or 12, so all the wire is used for the square or for the circle. How long should...

**MTH208**

123

**geometry**

A student notices that the shadows of a sign and a tree lie among the same line and end at the same point. The height of the sign is 2 meters and its shadow is 3 meters in lenght. The distance from the base of the sign to the base of the tree is 12 meters. How tall is the tree?

**statistics**

suppose the replacement times for washing machines are normally distributed with mean 8.6 years and standard devistion of 1.6years. a. what percentage of washing machines have replacement times less than 7 years? b. find the probability that a washing machine will have a repla...

**statistics**

a company manufactures batteries in batches of 18 and there is a 3% defect rate. Find the standard deviation for a number of defects per batch?

**american history**

Which of the following distinguished the Middle Colonies from New England and the Southern Colonies?

**chemistry**

Using a diagram to represent a barometer, The first bubble has 4.0L of Ar @ 1.5 atm a stopcock in between. middle bubble 3.0L Xe @ 6.2atm. stopcockB next bubble 8.0L CO @ 4.4 atm. What is predicted pressure if stopcock A is opened

**Chemistry**

30 grams

**PHI103**

1. A radical skeptic might be willing to doubt which of the following? (Points : 1) 3 + 5 = 8 Grass is green. Cheese is fattening. All of the above

**statistics**

I need to see the steps to figuring out this problem. 270 patients were given a placebo of those 270, 19 had headaches. What percentage of this placebo group reported headaches?

**math**

what is 14 decreased to 12

**chemistry**

If 5.50 moles of aluminum are reacted with 4.55 moles of copper(II) chloride, how many moles of aluminum chloride are porduced by the limiting reactant?