Friday

August 22, 2014

August 22, 2014

Total # Posts: 559

**Physics**

Suppose that a 200g mass (0.20kg) is oscillating at the end of a spring upon a horizontal surface that is essentially friction-free. The spring can be both stretched and compressed and have a spring constant of 240N/m. It was originally stretched a distance of 12cm (0.12m) ...
*March 13, 2012*

**physics**

Calculate the resistance of a 900 watt toaster operating at 120 volts. a) R= 10 ohms b) R=120 ohms c) R= 16 ohms d) R=1.6 ohms
*March 12, 2012*

**Physics**

Sorry it is what is the "minimum" not maximum
*March 12, 2012*

**Physics**

What is the maximum equipment needed to determine the power dissipated in a resistor of unknown value? 1) a voltmeter, only 2) An ammeter only, 3) a voltmeter and an ammeter only 4) a voltmeter, an ammeter, and a stopwatch
*March 12, 2012*

**Geometry**

Calculate surface area and the volume of a box that is 3m by 2m by 7.5m Show me how to get the answer please.
*February 28, 2012*

**Humanities**

Quote at least two pairs of related lines from the Declaration of Independence (Reading 24.3) and from John Locke's Of Civil Government
*February 20, 2012*

**Math**

Find all real Solution: 2x^3-7x^2-98x-343
*February 8, 2012*

**math**

Write the following in terms of sin(θ) and cos(θ); then simplify if possible. sec(θ) / tan(θ) =
*January 30, 2012*

**TRIG **

Find the remaining trigonometric ratios of θ if sin(θ) is given and θ QI sin(θ)=7/sqrt 149 cos= tan= cot= csc= sec=
*January 27, 2012*

**math**

5/8's as a product of a whole number anda unit fraction
*January 17, 2012*

**Math**

I do not understand how to measure the volume of a star shape medallion. I think I would multiply all the stars on the medallion. Thanks for your help.
*January 16, 2012*

**Algebra II**

I'm not sure if this is even close to how I should solve ths Rewrite 9x^2 + y^2 + 36x-6y+36 = 0 9(x^2 + 4x+4) + y^2 - 6y+9 = -36 + 36 + 9 9(x+2)^2/9 + (y-3)^2/9 = 1 =(x+2)^2 + (y-3)^2/9 = 1
*January 9, 2012*

**phi103**

1. A conditional sentence with a false antecedent is always (Points : 1) true. false. Cannot be determined. not a sentence. 2. "Julie and Kurt got married and had a baby" is best symbolized as (Points : 1) M v B M & B M → B M ↔ B 3. Truth tables can ...
*December 19, 2011*

**science**

calculatetheresistanceinacircuitinwhicha9-voltbatteryproduces3amperes
*December 10, 2011*

**CHEMISTRY**

I'm just not sure how to apply it to this problem.
*December 9, 2011*

**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.
*December 9, 2011*

**CHEMISTRY**

That's exactly how it was worded. I searched online and couldn't find anything.
*December 9, 2011*

**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
*December 9, 2011*

**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...
*November 25, 2011*

**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...
*November 21, 2011*

**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
*November 21, 2011*

**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
*November 21, 2011*

**Math**

input output 12 10 ? 16 32 ? 62 35 70 39 86 ? what's my rule?
*November 14, 2011*

**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 ...
*November 6, 2011*

**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 ...
*November 6, 2011*

**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?
*November 3, 2011*

**Chemistry**

convert 548mL to cm3
*October 11, 2011*

**Mathematics**

If (a+b)squared = 361 and ab =-120, calculate the value of a squared + b squared
*October 11, 2011*

**Mathematics**

6+m/3=18 What does m equal.
*October 4, 2011*

**Introduction to Psychology**

I was right is was D.
*September 26, 2011*

**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 ...
*September 26, 2011*

**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
*September 24, 2011*

**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
*September 24, 2011*

**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...
*September 24, 2011*

**math**

If arc BF = 45‹ and arc AE = 39‹, what is the measure of Ú1?
*September 19, 2011*

**Business**

Name a business that has demonstrated accountability to people, to its community, and to its environment
*August 22, 2011*

**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 ...
*August 18, 2011*

**Ag econ**

How do you prove marginal profitability of implementing precision ag practices to a farm operation.
*August 3, 2011*

**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...
*August 1, 2011*

**alegebra**

solve this system of equation using the substitution method. 6x+8y=72 2x+5y=45
*July 24, 2011*

**algebra II**

Solve using the quadratic formula: x^2 - 3x - 5 = 0
*July 3, 2011*

**algebra II**

Solve by completing the square: a^2 - 4a = -8
*July 3, 2011*

**grammar**

Thanks!
*July 1, 2011*

**grammar**

It is not used in a sentence. elizabethan drama- I need to tell if either word needs to be capitalized.
*July 1, 2011*

**grammar**

Elizabethan drama-Should drama be capitalized Martin Luther King Day-Shouldn't Day be capitalized because it is a holiday
*July 1, 2011*

**Physics**

Light is both a mechanical wave and a particle.
*June 26, 2011*

**Engineering Math**

solve the 1st differential equation: y1+4y=cos(x) with intial condition y(pie/3)=1
*June 24, 2011*

**Math Statistics**

(46,500 – 47,000)/[5500/sqrt(30)]=
*June 16, 2011*

**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.
*June 15, 2011*

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment
*May 12, 2011*

**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)?
*April 6, 2011*

**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 ...
*March 29, 2011*

**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 ...
*March 23, 2011*

**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.
*March 21, 2011*

**chemistry**

With a half-life of 14.3 years, how long will it take for100 g of phosphorus32 to decay to 12.5 mg?
*March 14, 2011*

**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 ...
*March 13, 2011*

**Geometry**

The measure of the supplement of an angle is one fourth the measure of the angle. What is the measure of each angle?
*February 26, 2011*

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

how does eudora welty use dialogue to establish characters?
*February 20, 2011*

**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¯ ?
*February 17, 2011*

**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¯ ?
*February 17, 2011*

**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 ?
*February 16, 2011*

**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 ?
*February 16, 2011*

**English**

Ok thank you
*February 13, 2011*

**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
*February 13, 2011*

**Science**

Calculate the Mass of C6H12O6 needed ot generate 2575 KJ of energy
*February 10, 2011*

**Math**

how do i find the revolutions per minute of a pulley that is turned 120 degrees per second?
*February 2, 2011*

**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 ...
*February 1, 2011*

**Algebra**

Determining whether the rational function f(x)=8x2+4*4x ihas symmetry?
*January 22, 2011*

**Algebra II**

Thanks-much appreciated
*January 8, 2011*

**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...
*January 8, 2011*

**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
*January 8, 2011*

**Algebra II**

How do you find the range of this problem? y = 4^x - 5 Where do I even look for the range?
*January 8, 2011*

**Human Body Systems**

Is the pupil medial to the iris?
*January 5, 2011*

**Business math**

254 trade discount series 11/10/11 What is the trade discount and what is the net price of the kennel?
*December 9, 2010*

**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
*December 9, 2010*

**sociology**

I think we all go to Rasmussen. im in central florida. how about everyone else?
*December 3, 2010*

**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 ...
*November 29, 2010*

**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 ...
*November 29, 2010*

**Physics**

thank you
*November 29, 2010*

**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 ...
*November 29, 2010*

**social studys **

what is two spanish artifacts?
*November 29, 2010*

**social studys **

what is two spanish artifacts?
*November 29, 2010*

**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 ...
*November 17, 2010*

**3rd grade**

55 in the emptier jar and 95 in the other jar.
*November 17, 2010*

**A&P**

When a virus has taken over
*November 17, 2010*

**physics (work shown)**

.63 x 9.8 = 6.174 not 2.52
*November 17, 2010*

**Math. HELP!**

Reiny. You. Are. God. Thank you :D
*November 17, 2010*

**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 ...
*November 17, 2010*

**Media Studies**

The loudest person gets heard, doesn't matter if what they say makes sense.
*November 17, 2010*

**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 ...
*November 17, 2010*

**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...
*November 17, 2010*

**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 ...
*November 17, 2010*

**5th grade (thomas)**

wait nevermind, the answer IS 3 7/10 is was reading the question incorrectly, sorry!
*November 17, 2010*

**5th grade (thomas)**

no the answer is not m=3 7/10
*November 17, 2010*

**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
*November 17, 2010*

**Math**

since 100cm = 1m A = 100cm x 50cm A = 5000cm squared
*November 17, 2010*

**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 ...
*November 17, 2010*

**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&#...
*November 17, 2010*

**Calc**

What is the area that this encloses? r = 4cos(3θ)
*November 14, 2010*

**9th grade**

how do i use the distributive property???
*November 11, 2010*

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