Thursday

January 19, 2017
Total # Posts: 256

**Vector Calculus**

Can someone help me with this please. A vector field in cylindrical polar co-ordinates is given by V = R Rˆ + R 3 s i n ( ? ) c o s ( ? ) ?ˆ + 3 z kˆ where Rˆ, ?ˆ, kˆ are the appropriate unit vectors. Translate this vector field into the Cartesian...

*January 16, 2017*

**vector calculus**

Thanks you, Steve. It does make a bit of sense to me know. But just to clarify, since ? is the points tangent to the planer circle, thus, ? is the derivative of the points x, y, z?

*January 15, 2017*

**vector calculus**

i know i need to sub 'unit R^' with cos? i + sin? j and z with 'unit K^' with z k. How about 'unit ?^' ? What do i need to sub phi with? I look else where it says sub it with -sin? i + cos? j. But how? and why? can someone explain it to me? Thankssss

*January 15, 2017*

**vector calculus**

yeahhh i get that but how do you translate theta in terms of cos or sine?

*January 15, 2017*

**vector calculus**

Can someone help me with this please. A vector field in cylindrical polar co-ordinates is given by V = R Rˆ + R 3 s i n ( ? ) c o s ( ? ) ?ˆ + 3 z kˆ where Rˆ, ?ˆ, kˆ are the appropriate unit vectors. Translate this vector field into the Cartesian...

*January 15, 2017*

**Maths(Surface integral/flux)**

I could do (b) but not (c)... Im not sure how they changed to the plane coordinate system of r(radius) and theta. For part (c): i did up to, -?(x^2 + y^2)^(1/2) dxdy then they changed it to the plane coordinate system which gives, -?(r=0 to 3)?(theta=0 to 2pi) r^2 drd(theta) ...

*December 26, 2016*

**Maths(Surface integral/flux)**

Let S be the funnel shaped surface defined by x^2 + y^2 = z^2 for 0<z<9 (a) Sketch S (b) Determine the outward pointing normal to S (c) Evaluate ?F.ds where F = -yi + xj + zk This is a super long question, but if you could help... it will be great.. Answer for (b): x(x^2...

*December 26, 2016*

**English**

Choose a selection from the crossing borders unit. Write a short explanation of how one of the individuals in this selection is affected by a border crossing. Use specific examples or details to support your answer. I picked the story "Delfino II: Diez In The Desert"...

*December 16, 2016*

**Science PLEASE HELP**

BECAUSE I DON'T KNOW THE ANSWER!

*December 6, 2016*

**Science PLEASE HELP**

Explain how gravitational, electrical and magnetic force act on a maglev train?

*December 6, 2016*

**Music**

What would a researcher who studies the tango dance music of Argentina be called? ethnomusicologist historical musicologist ** i think it is this one musical theorist systematic musicologist

*October 27, 2016*

**Computer**

Please give me an example of websites that are good for academic work..! What is the thing have in common??

*October 22, 2016*

**History**

The Thirteenth, Fourteenth, and Fifteenth Amendments reflected the growing 19th century American trend of A) granting universal manhood suffrage. B) upholding rights of free speech and religion. C) decreasing the power of the Federal government. <my cheese D) recognizing ...

*October 5, 2016*

**math**

A farmer planted 3 2/3 acres of oats, 5 3/4 acres of wheat, and 2 5/6 acres of barley. Compute the total number of acres planted?

*September 18, 2016*

**Math**

The least common multiple of two numbers is 60 and one of the numbers is seven less than the other number what are the numbers? justify your answer

*September 9, 2016*

**Science**

Why might a scientist estimate a measurement?

*August 11, 2016*

**Chemistry**

How does changing the volume of strontium nitrate solution, added to 8 cm3 of sodium carbonate solution, affect the amount of precipitate formed? Is it the more the strontium nitrate solution is increased, the more precipate formed?

*April 21, 2016*

**bio**

:(:(:(:(:(:( please anybody

*April 7, 2016*

**bio**

:);)

*April 7, 2016*

**bio**

Thankyou in advance1111!!!!!!!!!!

*April 7, 2016*

**bio**

PLEASE HELLLLLLLPPPPPPPPPP

*April 7, 2016*

**bio**

which invertebrate phylum contains the sub phylum vertebrata

*April 7, 2016*

**Math**

A section of rope is 0.5 feet long. The rope is cut into six equal lengths. How long is each section?

*April 2, 2016*

**math**

What type of different distance rate problems are there?

*March 20, 2016*

**Math**

You should also give her rewards when she gets something right.

*March 16, 2016*

**Math**

I think you should find songs that teach counting, my baby cousin, who is 2, watches mother goose club. and now she can count to 10 (at least i think she can) lol, but you can also try getting objects or blocks and have her count them. mother goose club teaches a lot of things...

*March 16, 2016*

**Math**

what is the circumference of the circle round your answer to the nearest foot the circle is 28 ft. A.) 88 ft B.) 84 ft C.) 66 ft **** (ANSWER) D.) 44 ft

*March 8, 2016*

**Math**

Never mind my mom helped me since she was done with homework thanks anyways (:

*February 29, 2016*

**Math**

15.8?

*February 29, 2016*

**Math**

Ms.Sue are you going to help me?

*February 29, 2016*

**Math**

I need help please

*February 29, 2016*

**Math**

So your not gonna help me...?

*February 29, 2016*

**Math**

7. Ben earns $9 per hour and $7 for each dilivery that he makes. He wants to earn more than $120 in an 8-hour work day. What is the least number of deliveries he must make to reach his goal? A. 5 B. 6 C. 7 D. 8 E. 10 12. Mark went shopping with $110 to spend. He bought a ...

*February 29, 2016*

**Trigonometry**

from your apartment balcony, you look down and see two of your friends walking toward your apartment building. As you look East, you see Maria with a 60 degree angle of depression. As you look East, you also see jack with a 45 degree angle of depression. If your apartment ...

*February 24, 2016*

**Trigonometry**

John stands on top of a little lighthouse looking out at a nearby tall lighthouse that is 200 feet away. He looks at the top of the tall lighthouse with a 3 degree angle of elevation, but looks at the bottom of the tall lighthouse with 6 degree angle of depression. Find the ...

*February 24, 2016*

**math**

Estimate each qutioent 35 divided by 4is what

*January 21, 2016*

**Math**

I am a four digit number my ones digit is four less than my hundreds digit which is three times my tens digit which is half my thousands digit which can be divided by 1 2 or 3 with out a remainder what is my number

*January 12, 2016*

**math**

118 members

*January 12, 2016*

**math**

36 miles

*January 12, 2016*

**SCIENCE**

True frost forms when the temperature is below freezing. The moisture goes straight from a gas to a solid. If the moisture goes from a gas to a liquid and then to a solid then the result will be frozen dew. You can tell the difference between frost and frozen dew by looking at...

*January 7, 2016*

**Health**

1. C 2. B or D

*January 7, 2016*

**SS**

Cherokee, like many other Native American's were susceptible to a variety of diseases carried by people from Europe; the unclean living standards practiced by that society is rife for disease. There has been documented proof that the European Settlers (White Americans) ...

*January 6, 2016*

**math**

Yes

*January 6, 2016*

**math**

I'm not ms.sue but that's not right.

*January 6, 2016*

**U.S. History**

Sorry if it's to late, but I think it's D

*January 4, 2016*

**geometry**

In class we are doing overlapping triangles and I have the measures of the angles I just need to know how to solve if there's an angle that isn't congruent between both sides?? if that makes any sense.

*December 20, 2015*

**Social studies PLEASE HELP!**

can you give the answers for the rest of the quiz

*November 11, 2015*

**English**

It's B.

*October 15, 2015*

**Math (Quadratics)**

3. Solve for x in 8x^2 + 2x - 4 = 0 I have tried factoring, taking out a GCF then factoring, completing the square, and got a bunch of wrong answers. I thought we were supposed to complete the square, so maybe I'm just doing that wrong. I'm not looking for the answer ...

*October 8, 2015*

**Math**

What is the best estimate for the prouduct of 289 and 7

*September 16, 2015*

**Physics Helpppp**

Q11 a(ii)A sinusoidal carrier wave has frequency 500 kHz and amplitude 6.0 V. It is to be frequency modulated by a sinusoidal wave of frequency 8 kHz and amplitude 1.5 V. The frequency deviation of the carrier wave is 20 kHz V^–1 Describe, for the carrier wave, the ...

*May 2, 2015*

**Physics Capacitance**

Three uncharged capacitors, X, Y, Z, each with capacitance of 12uF each are connected A---------[X]------[Y/Z]-----------B *Y&Z is parallel to each other* A potential difference of 9.0V is applied between points A and B. Explain why when the potential difference of 9.0V is ...

*April 25, 2015*

**math**

i don't know that's im asking

*April 14, 2015*

**Math**

How do you find the angle, θ, between the vectors? If needed, round your answer to the nearest tenth. 1.) u = 2i - 3j v = i - 2j 2.) u = <3, 2> v = <4, 0>

*February 20, 2015*

**English check**

Elijah is right 1.) A 2.) C 3.) B 4.) B 5.) A You will get 100%

*February 19, 2015*

**Math**

Hi! So this question kind of has two parts to it. If someone could help me with this, that would be great! Thanks! :) Juan lives in a large city and commutes to work daily by subway or taxi. He takes the subway 80% of the time because it costs less and he takes a taxi 20% of ...

*February 6, 2015*

**Maths Vector Helpppp**

The points A and B have position vectors, relative to the origin O, given by −−→OA = i+2j+3k and −−→OB = 2i+j+3k. The line l has vector equation r = (1−2t)i+ (5+t)j+ (2−t)k. (i) Show that l does not intersect the line passing ...

*January 19, 2015*

**world studies**

Ms.Sue i cant find the website for my world history book its from pearson ags global im in 9th grade and i need chapter 7 to look up some information to answer the questions on my worksheet can u please help me.

*December 23, 2014*

**world studies**

sorry the subject is world history

*December 23, 2014*

**world studies**

I have a worksheet the i have to answer but I didn't bring my S.S book cause I forgot it. can u please helped me with the following question. 1. In 100 years,the American Indian population went from 20 million to what million? A.60 B.8 C.6 D.4

*December 23, 2014*

**6th grade Math**

What two expressions could be used to represent the cost of a speeding ticket on (1) streets and highways and (2) in construction and school zones?

*December 22, 2014*

**Algebra 2**

so what's the correct answer Steve?

*December 11, 2014*

**Algebra 2**

find the real zeros of each polynomial f(x)=5x^3-40 Please show work I want to learn how to did it

*December 11, 2014*

**Algebra 2**

Factor 8x^3-1000y^6 Please show work!!!

*December 11, 2014*

**Pre Algebra**

I can purchase a 30-ounce bottle of juice for $1.80 or a 64 ounce bottle of juice for $3.20. How much do I save per ounc by purchasing the larger bottle? 30 divided by 1.80= .06 4 dividec by 3.20= .05 Subtraction .06 by .05 Answer = 0.1

*December 9, 2014*

**Math**

Direction:Write each power as a product of the same factor. Ten find the value. 1. 3^5

*December 4, 2014*

**history**

Under the Articles of Confederation, the central government could not a. borrow money. b. force states to provide money and soldiers. c. make treaties. d. resolve conflicts between states.

*December 4, 2014*

**6th grade Math**

Abraham earns $11.50 an hour. How many hours will Abraham have to work to earn $483? Please Show Work!!!!

*December 3, 2014*

**Math**

What are the steps in how to divide fractions? Give an example!

*December 2, 2014*

**Chemistry**

At 2000°C the equilibrium constant for the reaction is Kc = 2.4 ✕ 103. 2 NO(g) equilibrium reaction arrow N2(g) + O2(g) If the initial concentration of NO is 0.160 M, what are the equilibrium concentrations of NO, N2, and O2? I do not even know how to ...

*November 28, 2014*

**ethics**

Well lets look at it. This is speaking of logotherapy right? and logotherapy states: -Life has meaning under all circumstances, even the most miserable ones. -Our main motivation for living is our will to find meaning in life. -We have freedom to find meaning in what we do, ...

*November 28, 2014*

**algebra**

If it takes 4 ounces of insecticide to make 2/1/2 gallons of garden spray, how much spray can be made with 6 ounces of insecticide My answer was x=24 is it right???

*November 23, 2014*

**algebra**

I got 24 but I cant repeat the same answer

*November 22, 2014*

**algebra**

I got 0.6625 is that right???

*November 22, 2014*

**algebra**

I know I did but it gives me 1.5 and I know that u have to move the place value and it becomes 15 but that answer is already chosen from another problem that I just did and it can only be repeated once not twice how else can I write my answer to make it different instead of ...

*November 22, 2014*

**algebra**

I don`t get this question: A flagpole casts a shadow 32 feet long. If a man 6 feet tall casts a shadow 8 feet long at the same time and location, how tall is the flagpole?

*November 22, 2014*

**algebra**

Ms.Sue, can you please tell me am just waiting for you to answer.

*November 22, 2014*

**algebra**

what about the last 66/2/3% of PIT

*November 22, 2014*

**algebra**

ok thanks what about the question I asked u above

*November 22, 2014*

**algebra**

so your suppose to divide by the same percent to get the answer???

*November 22, 2014*

**algebra**

what about if it says the first 33/1/3% of dwarfs

*November 22, 2014*

**algebra**

ok thanks

*November 22, 2014*

**algebra**

the last 10% of CRYPTOGRAM II DON'T GET THIS????

*November 22, 2014*

**algebra**

never mind i already checked thanks

*November 22, 2014*

**algebra**

the ratio of the weight of an object on jupiter to its weight on earth is 8 to 3. how much would a 100 pound person weigh on Jupiter? i`ll tell you the answer when am done solving so you can check if am right

*November 22, 2014*

**algebra**

is it 11.2

*November 22, 2014*

**algebra**

The ration of oil to vinegar in a certain salad dressing is 8:5. how much oil must be blended with 7 liters of vinegar for that recipe?

*November 22, 2014*

**algebra**

is it 50

*November 22, 2014*

**algebra**

A car travels 350 miles on 20 gallons of gallons of gasoline.How many gallons will be used to travel 875 miles under the same conditions

*November 22, 2014*

**algebra**

300 right

*November 22, 2014*

**algebra**

can u please check my answer

*November 22, 2014*

**algebra**

or is it 29.00

*November 22, 2014*

**algebra**

is it 0.3

*November 22, 2014*

**algebra**

If pencils sell at 6 for 59 cents,how many pencils can be bought for $2.95?

*November 22, 2014*

**algebra**

ok thanks

*November 22, 2014*

**algebra**

is it x=210

*November 22, 2014*

**algebra**

Is it 0.04 and some other decimals I did it like this 560x/560=24/560 and got x=0.042857143

*November 22, 2014*

**algebra**

Thank You

*November 22, 2014*