Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 551

**CHEMISTRY**

I know this question is already on here but the answer wasn't helpful to me. Liquid Sodium can be used as a heat transfer fluid. Its vapor pressure is 40.0 torr at 633 C and 400.0 torr at 823 C. Calculate its heat of vaporization.

**CHEMISTRY**

That's exactly how it was worded. I searched online and couldn't find anything.

**CHEMISTRY**

What is the intermolecular force that exists between a magnesium ion and a hydrogen sulfide? A dipole dipole b london dispersion c ionic bond d ion dipole e ion ion

**Biology**

If an RR genotype is crossed with a Rr genotype, which color flowers would the offspring least likely have? a.) red b.)white I think it would be white, but I'm not sure...

**math**

An equation of the line in slope intercept form that passes through the point (-9, -1) and is perpendicular to the line y = 3x + 17? Please help...

**algebra**

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you

**Algebra**

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you

**Math**

input output 12 10 ? 16 32 ? 62 35 70 39 86 ? what's my rule?

**Calculus**

Mr. Cook was painting Arvada West High School, standing on top of a 25]foot ladder. Why? We will never know. However, he was horrified to find the ladder being pulled away by the same notorious student that threw a snowball at Mrs. Evans. The base of the ladder was movin...

**Calculus**

Mr. Cook was painting Arvada West High School, standing on top of a 25]foot ladder. Why? We will never know. However, he was horrified to find the ladder being pulled away by the same notorious student that threw a snowball at Mrs. Evans. The base of the ladder was movin...

**advanced math**

Suppose you have 168 meters of fencing with which to make two side-by-side rectangular enclosures against an existing wall. If the rectangular enclosures are adjacent and of the same depth, what is the maximum are that can be enclosed?

**Chemistry**

convert 548mL to cm3

**Mathematics**

If (a+b)squared = 361 and ab =-120, calculate the value of a squared + b squared

**Mathematics**

6+m/3=18 What does m equal.

**Introduction to Psychology**

I was right is was D.

**Introduction to Psychology**

Kevin and Cheryl has completed their first day of naturalistic obeservation of adolesents at the local hligh school. As they discussed their experiences during the day, they found that they were both concerned about the difference their presence in the classrooms made on adole...

**Pre-Calc**

If someone could explain how to set up the TI-84 P;lus to graph polar coordinates (3,15degrees) then I'll use that as an example. I know it has to be in degrees and then the y= appears but what then?? Thank you

**Pre-Calc**

Can someone explain how to graph polar coordinates on a TI-84 Plus calculator-I can't find the directions anywhere Thank you

**Pre-Calc**

Can anyone direct me to learn more about polar coordinates. I'm in online college course and really am confused. In high school, I never heard of polar coordinates. Like they say is the following the graph of point (3,15) and show it on polar grid-I don't get it at all...

**math**

If arc BF = 45‹ and arc AE = 39‹, what is the measure of Ú1?

**Business**

Name a business that has demonstrated accountability to people, to its community, and to its environment

**Science**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in run...

**Ag econ**

How do you prove marginal profitability of implementing precision ag practices to a farm operation.

**Business Communication**

In which of the following situation would it be BEST to recast the situation as a positive message? A.When you want to maintain goodwill with the reader, because you still have to deal with each other. B. When there really is not a reason for the refusal. C. When you can offer...

**alegebra**

solve this system of equation using the substitution method. 6x+8y=72 2x+5y=45

**algebra II**

Solve using the quadratic formula: x^2 - 3x - 5 = 0

**algebra II**

Solve by completing the square: a^2 - 4a = -8

**grammar**

Thanks!

**grammar**

It is not used in a sentence. elizabethan drama- I need to tell if either word needs to be capitalized.

**grammar**

Elizabethan drama-Should drama be capitalized Martin Luther King Day-Shouldn't Day be capitalized because it is a holiday

**Physics**

Light is both a mechanical wave and a particle.

**Engineering Math**

solve the 1st differential equation: y1+4y=cos(x) with intial condition y(pie/3)=1

**Math Statistics**

(46,500 – 47,000)/[5500/sqrt(30)]=

**Statistics**

A group of scientists created 150 trials to measure whether electric shock treatment could cure paranoid delusions. Of these trials, 52 were successful. Find the margin of error E that corresponds to a 95% confidence level. The critical value for 95% confidence level is 1.96.

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment

**math**

Consider the function f(x) whose second derivative is f''(x) = 5 x + 6 \sin (x). If f(0) = 4 and f'(0) = 2, what is f(x)?

**physics-Momentum**

A Cadillac of mass 2210 kg going east collides with a Geo of mass 1240 kg headed north on a level highway. The cars remain tangled and slide to rest after traveling 25 m in a straight line at an angle of 20° north of east. The coefficient of kinetic friction for the tires ...

**Math**

A fence is to be built to enclose a rectangular area of 200 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 13 dollars per foot. Find the length L and the width W (with W less than or ...

**Finance**

Find the lump sum deposited today that will yield the same total amount as payments of $10,000 at the end of each year for 15 years at a rate of 4% compounded annually.

**chemistry**

With a half-life of 14.3 years, how long will it take for100 g of phosphorus32 to decay to 12.5 mg?

**Math**

One summer, Jared earned $26 each time he mowed the lawn. He mowed the lawn a total of 13 times that summer. He had to fix his lawn mower one time during the summer, which cost him $32.42. Which number sentence could be used to find M, Jared's profit for the summer includ...

**Geometry**

The measure of the supplement of an angle is one fourth the measure of the angle. What is the measure of each angle?

**literature--Please help me!!!**

how does eudora welty use dialogue to establish characters?

**Chemistry**

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O <-> HNO2 + OH¯ ?

**Chemistry**

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O <-> HNO2 + OH¯ ?

**math**

my house payment is 800 dollars a month @ 5.5 % interest for 30 years at the end of 30 years ,how much would i pay ?

**math**

my house payment is 800 dollars a month @ 5.5 % interest for 30 years at the end of 30 years ,how much would i pay ?

**English**

Ok thank you

**English**

Is this sentence correct? I sat down with him and helped him with the layers of the earth worksheet. Or do I need to take out the before layers

**Science**

Calculate the Mass of C6H12O6 needed ot generate 2575 KJ of energy

**Math**

how do i find the revolutions per minute of a pulley that is turned 120 degrees per second?

**Physics; Elect.**

1. A charge (uniform linear density=9.0 nC/m) is distributed along the x-axis from x=0 to x=3.0m. Determine the magnitude of the electric field at a point on the x axis with x=4.0m. a)81 N/C b)74 N/C c)61 N/C d)88 N/C e)20 N/C 2. A +2nC point charge is placed at one corner of ...

**Algebra**

Determining whether the rational function f(x)=8x2+4*4x ihas symmetry?

**Algebra II**

Thanks-much appreciated

**Algebra II-Please recheck**

Okay, let me try this again-I meant 8, not 6-a typo but then why is y>=8 in this one and the other one it is y>-5 and not greater and equal-is it because of the positive sign? So for y = 3^x - 4, the range would be y >-4 and not y >= (-4), right-I'm just trying...

**Algebra II-could you just check this**

So is that the "K" I'm looking at to solve for the range-my teacher keeps talking about the a h, k, ect and what effect they have Like if it said y = 2^x + 8 the range would be y>6 Thank you

**Algebra II**

How do you find the range of this problem? y = 4^x - 5 Where do I even look for the range?

**Human Body Systems**

Is the pupil medial to the iris?

**Business math**

254 trade discount series 11/10/11 What is the trade discount and what is the net price of the kennel?

**Calculus**

I have a cone and water is leaking from it at a rate of sqrtV*-2 how do i find out how long it takes

**sociology**

I think we all go to Rasmussen. im in central florida. how about everyone else?

**physics**

You own a yacht which is 14.5 meters long. It is motoring down a canal at 9.80 m/s. Its bow (the front of the boat) is just about to begin passing underneath a bridge that is 30.0 m across. How much time is required until its stern (the end of the boat) is no longer under the ...

**Physics**

The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 6.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to reac...

**Physics**

thank you

**Physics**

An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. The elevator is traveling at an unknown velocity when the cable snaps. The elevator falls 2.50 meters before hitting the bottom of the shaft. The elevator was in free fall for 0.900 se...

**social studys **

what is two spanish artifacts?

**social studys **

what is two spanish artifacts?

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ab...

**3rd grade**

55 in the emptier jar and 95 in the other jar.

**A&P**

When a virus has taken over

**physics (work shown)**

.63 x 9.8 = 6.174 not 2.52

**Math. HELP!**

Reiny. You. Are. God. Thank you :D

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ab...

**Media Studies**

The loudest person gets heard, doesn't matter if what they say makes sense.

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ab...

**science**

throw the jet pack in the opposite direction of where the space station is. The equal opposing forces will mean that throwing the pack will actually propel you in the opposite direction that you threw it in, and since there is no friction in space, you won't stop until you...

**Math**

yes they are equal. they can help in finding the area of a triangle because it shows that it doesn't matter if you half the base or the height and multiply them with eachother to get a triangle Triangle = 1/2 * base * height what this is saying is that whether you do (1/2 ...

**5th grade (thomas)**

wait nevermind, the answer IS 3 7/10 is was reading the question incorrectly, sorry!

**5th grade (thomas)**

no the answer is not m=3 7/10

**5th grade**

6 - m = 2 3/10 6 - m = 20/10 + 3/10 6 - m = 23/10 -m = 23/10 + 6 -m = 23/10 + 60/10 -m = 83/10 m = -8 3/10

**Math**

since 100cm = 1m A = 100cm x 50cm A = 5000cm squared

**Math**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ab...

**chemistry........help!! =)**

So, MaVa = MbVb implies that for the same mass and volume, neutralization will be possible because of a 1:1 ratio. This is seen in HCL + NaOH reaction: HCl + NaOH = NaCl + H20 As you can see no balancing, and there is the same coefficient in front of HCl as there is NaOH (it&#...

**Calc**

What is the area that this encloses? r = 4cos(3θ)

**9th grade**

how do i use the distributive property???

**Maths**

What is the answer to the following using sicentific calculator 64-1/6

**physics**

A 3.0-kg body is initially moving northward at 15 m/s. Then a force of 15 N, toward the east, acts on it for 4.0 s. (a) At the end of the 4.0 s, what is the body’s final velocity? (b) What is the change in momentum during the 4.0 s?

**Physics **

Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as shown. An external force P is applied downward on block A (12Kg). The system accelerates at the rate of 2.5m/s^2. The tension in the rope connecting block B (18Kg) and block C equals 60N. Wha...

**Physics**

Side note: Since Olaf wasn't moving initially, molaf*Vi2 = 0

**Language Arts**

Thanks

**Language Arts**

What are the appositives in this sentence:Football, a game loved by millions of people, is becoming even more popular.

**3rd grade**

complete to show how you can find the sum by making a ten, hundred, or thousand. 9+5=14 9+1+ blank 10+ blank blank 90+50=140 90+10+blank 100+blank blank 900+500=1400 900+100+blank 1000+blank blank

**cpcc**

A 134 N bird feeder is supported by three cables as shown in Figure P4.17. Find the tension in each cable. right cable 1 N left cable 2 Your response differs from the correct answer by more than 10%. Double check your calculations. N

**cpcc**

In Figure P4.30, m1 = 10.0 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. Figure P4.30 (a) If the system is released from rest, what will its acceleration be? 1 m/s2 (b) If...

**cpcc**

A frictionless plane is 10.0 m long and inclined at 33.0°. A sled starts at the bottom with an initial speed of 4.30 m/s up the incline. When the sled reaches the point at which it momentarily stops, a second sled is released from the top of the incline with an initial spe...

**trig**

HOW DO YOU SOLVE THIS PROBLEM, sin theta>0,cos theta>0

**geometry**

the measure of angle xyz is 140degree what is the value of x (2x+6)degree

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