Friday

May 27, 2016
Total # Posts: 703

**physics**

The radius of a roll of paper is 7.6 cm and its moment of inertia is I = 2.9 × 10^3 kg·m2. A force of 3.2 N is exerted on the end of the roll for 1.3 s, but the paper does not tear so it begins to unroll. A constant friction torque of 0.11 m·N is exerted on...
*May 8, 2016*

**world history **

the site is gatestoneinstitute -Was Iraq War worth it by Richard miniter (I wasn't able to post the link so here's the title of the article) Can someone help me identify what the author's argument is. I know the question is, is the iraq war worth it? but I was ...
*May 7, 2016*

**math**

In triangle XYZ,A is the midpoint of YZ. The bisector of the exterior angle at X of XYZ cuts YZ produced at B. The line through A parallel to XB, cuts XY at P and XZ produced at Q. 1.PY/PX= ZA/BA = QZ/QX. Please help
*April 25, 2016*

**English**

english is the language of opportunity. Why bother to teach indigenous language?
*April 14, 2016*

**physics**

a 2.2 kg ball is dropped from 3m above vertical spring whose spring constant is 450 n/m. a) how far will it compress the spring? b.) what velocity will the ball have when it leaves the spring again?
*April 12, 2016*

**Physics**

A 5kg box is pulled for a distance of 12m with a force of 20N along frictionless surface. The force is applied at an angle that is 15 deg. above the horizontal. a.) how much work was done by the applied force? b) how fast will the box be moving at the end of the 12m if it ...
*April 12, 2016*

**PHYSICS!!! **

A skier traveling 12.0 m/s reaches the foot of a steady upward 18 degree incline and glides 12.2 m up along this slope before coming to rest. What was the average coefficient of friction?
*April 4, 2016*

**Physics**

I couldn't figure out a, but b is (1/2.41) - (1/-13) = 2.03 cm and the second blank is none.
*March 21, 2016*

**Math**

If 8,x,y,z and 20 are in A.P.find x,y,z
*March 19, 2016*

**Astronomy**

F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =
*March 6, 2016*

**math**

The park currently contains 20 wolves and the park rangers are introducing additional wolves at the rate mt(12−t) wolves per month, 0≤t≤12 for some constant m>0 to be determined. However, the park rangers are concerned about damaging the current rabbit ...
*February 21, 2016*

**Statistics**

What do i do to calculate the 25% mean of 50 variables? Like, how many do I take away from the smallest and largest sides?
*January 19, 2016*

**Math**

thanks so much Ms. Sue
*November 21, 2015*

**Math**

Ms. Sue just so I understand should the answer be just 9/32 or 9/32%. thanks for your help.
*November 21, 2015*

**Math**

Need help with this please. what percent of 2 2/3 is 3/4? .75/2.6 = x/100 2.6x/2.6 = 75/2.6 answer I came to is 28.846153, is this correct. Need assistance
*November 21, 2015*

**Chemistry**

A solution containing a mixture of 0.0381 M potassium chromate (K2CrO4) and 0.0769 M sodium oxalate (Na2C2O4) was titrated with a solution of barium chloride (BaCl2) for the purpose of separating CrO42– and C2O42– by precipitation with the Ba2 cation. Answer the ...
*October 15, 2015*

**math functions**

I got -x^2 + 2x + 4 - 3 but it was marked wrong
*October 12, 2015*

**math functions**

what is f(x) - g(x) when f(x)=3x-3 and g(x)=x^2-4
*October 12, 2015*

**physics**

a bock with mass 60kg sits on a surface with static friction Us = 0.51. a spring (k = 69N) is stretched horizontally by 11cm but the block is still stationary. What is the friction force felt by the block when stretched 11cm?
*September 23, 2015*

**Math**

Charlie has a drawing of his bedroom that measures 8 1/2 inches long by 7 1/4 inches wide. If the real room measures 15 ft in length, what is the rooms width?
*September 8, 2015*

**Algebra**

Your friend claims that she has a bag of 30 coins containing nickels, dimes, and quarters. The total value of the 30 coins is $3. There are twice as many nickels as there are dimes. Is your friend correct? Explain your reasoning
*September 6, 2015*

**physics**

Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25.0 degrees west of north, and the resultant of these two pulls is 350.0 N directly northward. Use vector components to find the magnitude of each of these ...
*August 18, 2015*

**algebra**

-2(x-3y)-3x+5y)-(6x-8y)
*July 13, 2015*

**math**

write 515% = 3/10 as a mixed number or fraction. answer in simplest terms
*July 6, 2015*

**Chemistry**

A tanker spilled 5,000l ammonia (approximately 0.2M). How much sulphuric acid is needed to nuetralize ammonia?
*June 8, 2015*

**Sequences **

Terms 1 through 5 of a sequence are shown below. 8/81 , 4/27 , 2/9 , 1/3 , 1/2 What is the 10th term in the sequence? I have no clue. I tried having common denominator of 81, but that just confused me more. I would try to show more work, but I really don't know how to ...
*May 31, 2015*

**S.S**

I am going with B. That's what I think it is.
*May 28, 2015*

**S.S**

Well I'm not sure if it's D. I thought about it, but from what I read..
*May 28, 2015*

**S.S**

In the war on terrorism, the targets of united states strikes were a. the northern alliance troops b. pakistan and india c. afghani civilians d. al-qaeda and the Taliban is it A or C?
*May 28, 2015*

**collage chemistry**

You spill 1500 mg of rubbing alcohol in a box that measures 4 m x 2m x 3m. If the entire sample evaporates into a gas, what is the concentration of the alcohol in milligrams per cubic meter?
*May 19, 2015*

**Art**

How did plastic revolutionize the art of furniture design? A.) Designers could create works that were soft and colorful. B.) Designers could create works that were sturdy and moldable. C.) Designers could create works that were patterned and sturdy. D.) Designers could create ...
*May 12, 2015*

**art**

which textile techniquw do quilters use to craft blankets 1. cross-stitching 2. weaving 3. stitchery 4. knitting It's weaving or stitchery.. Help please
*May 12, 2015*

**L.A**

I want to say D
*May 5, 2015*

**L.A **

The word propose has been borrowed from the Latin propositus meaning, "set forth" in which sentence is the word propose used correctly A. he felt that propose would do more harm than good B. when you set up a propose, be certain it is correct. C. the seller accepted ...
*May 5, 2015*

**English**

I need a comparison for saying I love you for the first time and an explanation for it.
*May 4, 2015*

**English**

The transgression of being alone in the State is like bullying in our society. Can you explain to me how this is an analogy. We came up with this analogy for Anthem by Ayn Rand and I don't see how this like an analogy. Please explain.
*May 4, 2015*

**math**

43.844444 now you estimate
*May 4, 2015*

**Math**

Thanks!!!
*May 4, 2015*

**Math-- Ms. Sue? Can someone check please. **

Please check.. Thanks
*May 4, 2015*

**Math**

1. Given the function rule f(x)= x^2 - 3x + 2, what is the output of f(-2)? A. 12 B. 4 C. -8 D. 0 2. Suppose you earn $10 each hour you babysit. Which function describes the relationship between your total earnings E and the number of hours you babysit, h? A. E(h) = 10h B. E(h...
*May 4, 2015*

**Math. first and last repost. please help**

Find the function that has the greater rate of change As x increases by 1, y increases by 3. The graph has a line and 3 dots. the dots are labeled- x: -1 | 0 | 1 y: 0 | 2 | 4 A. the slopes are equal B. the graph has a greater slope C. the function rule has a greater slope**** ...
*May 3, 2015*

**Math please help. **

Find the function that has the greater rate of change As x increases by 1, y increases by 3. The graph- x: -1 | 0 | 1 y: 0 | 2 | 4 A. the slopes are equal B. the graph has a greater slope C. the function rule has a greater slope**** D. none of the above
*May 3, 2015*

**Chemistry (Molarity) **

Indicate the concentration of each ion or molecule present: a mixture of 48.0 mL of 0.11 M KClO3 and 28.0 mL of 0.29 M Na2SO4. Assume the volumes are additive. a) [K+] b) [ClO3-] c) [SO42-] d) [Na+] We haven't taken notes on this particular type of problem yet and I can&#...
*May 3, 2015*

**math**

It's C because $5 for 1 sub .. so y=5x for 1 it's $5 for 2 it's $10 and on and on.
*April 26, 2015*

**math**

Nope
*April 26, 2015*

**math**

No, it's C
*April 26, 2015*

**Algebra**

An airplane flies 165 miles from point A in the direction 130 degrees and then travels in the direction 245 degrees for 80 miles. Approximately how far is the airplane from A?
*April 24, 2015*

**Science last question**

Ms. Sue usually says something similar to --> "you had two guesses all ready. Please don't post this again." So, I'm gonna stop here because I've already had 2 guesses and I don't want it to seem like I'm not doing any work. Anyways, great ...
*April 16, 2015*

**Science last question**

Yes lol. There is no size on the paper for me. it just shows both boxes. box A is bigger than box B, and box A is 100 g and box B is 10,000 g If it's not C I was also thinking answer choice D
*April 16, 2015*

**Science last question**

C. am i right?
*April 16, 2015*

**Science last question **

Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger*** D. box ...
*April 16, 2015*

**science**

thanks, and yes I was referring to question 4 and 5 sorry!!
*April 16, 2015*

**science**

4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion B. magnetic C. gravitational D. electromagnet 5. An experiment discovered that a particular material was a poor conductor of electricity. This material would most likely be used as an A. ...
*April 16, 2015*

**art only 2 questionssss**

ahh. alright well it's not D so.. C? If I'm wrong I understand I can't ask again.
*April 12, 2015*

**art only 2 questionssss**

In an effort to help a student understand the concept of shading, which teaching strategy could an educator use to help someone who learns best through hands-on activities? A. explain shading techniques out loud B. write shading techniques on the board. C. give time to ...
*April 12, 2015*

**L.A**

Thank you!
*April 12, 2015*

**L.A **

In which sentence is the meaning of the word blackmail best represented? A. they hoped that her envy would not cause blackmail B. they reached for the phone, eager to hear the blackmail news. C. they were afraid that blackmail would lead to more demands for money D. alone and ...
*April 12, 2015*

**L.A**

Oh, so is it B?
*April 12, 2015*

**L.A**

In the following sentence, what word does the participial phrase modify? Everyone in the annex heard her screaming loudly. A. Everyone B. annex C. heard*** D. her Please check
*April 12, 2015*

**Physics**

At an intersection a car of mass 900kg traveling east collides with a pick up truck of mass 1800kg that is traveling North. Two vehicles stick together as a result of the collision, and after collision, the wreckage is sliding at 16m/sec in the direction 24 degrees East of ...
*March 31, 2015*

**math**

The answer to this would be 9, because anytime you multiply a negative number by a negative number, you get a positive number
*March 13, 2015*

**math**

It would be 20*.6 The closest thing to a formula for problems like these would be if it is a discount you multiply the original price by (1-discount). Like for this it was 20*(1-.4) If it is a markup then it is the original price multiplied by (1+markup). For example, if this ...
*March 12, 2015*

**physics**

A transformer has N1=709turns in the primary coil and N2=1848turns in the secondary coil. If the input voltage is v(t)=218cos(Ωt) V, what rms voltage, in volts, is developed across the secondary coil?
*March 6, 2015*

**physics**

An inductor (L=440mH), a capacitor (C=6.00μF), and a resistor (R=440Ω) are connected in series. A 75.0Hz ac generator produces a peak current of 255mA in the circuit. a) What is the impedance of the circuit? Answer in units of Ω
*March 6, 2015*

**physics**

A capacitor is rolled from two strips of aluminum separated by two strips of paraffin-coated paper. Each strip is 5.40cm wide. The foil is 7.00μm thick, and the paper is 50.0μm thick. What length, in cm, should the strips be if a capacitance of 24.0nF is desired? Use...
*January 30, 2015*

**books**

Ok i sure will
*January 21, 2015*

**books**

Thank you!
*January 21, 2015*

**books**

Forgot the book!
*January 21, 2015*

**books**

Whats chapter 2 the of mice and men about?
*January 21, 2015*

**Geography**

What resources help with farming in Europe?
*January 21, 2015*

**strength of materials**

a water tank is 10 m in diameter and 16m high. if the tank is to be completely filled, determine the minimum thickness of the tank plating if the stress is limited to 60 MPa
*December 11, 2014*

**physics**

an airplane flies 200km from city a to city b east,then 200km south from city b to c,and finally 100km northwest to city d.how far is it from city a to city d.in what direction must the airplane head to return directly to city a from city d?
*December 9, 2014*

**Physics**

θ = tan⁻¹μ
*December 7, 2014*

**art history**

Any help on this question? Which of the following pairs of biblical symbols stand for divinely sanctioned authority? a. lamb and dove b. nimbus and orant figure c. keys and chi-rho symbol d. palm leaves and shepard I'm really not sure so any direction or assistance would ...
*December 7, 2014*

**Physics**

Help!! I would greatly appreciate help with this question. Consider a pulse of laser light aimed at the Moon that bounces back to Earth. The distance between Earth and the Moon is 3.84 * 108 m. Show that the round-trip time for the light is 2.56s.
*December 4, 2014*

**math**

Juan lives 2.5 miles to the park. It took him 12 minutes to ride his bike to the park. What was his average speed in miles per hour
*November 29, 2014*

**chemistry**

cal culate the ph of a mixture of 100 ml distilled water and 2 ml of 2M of NaOH
*November 29, 2014*

**chemistry**

i dont understand what i have to do for the calculation. what ive learnes is about acid and base titration . when we add a base to an acid until the equivalence point is reached which is where the moles of acid equals the moles of base ion .from my logicall thinking the ...
*November 29, 2014*

**chemistry**

titration of 50ml of 0.25ammonia with 0.5M HCL . a) find the initial PH value b) volume of HCL is required to reach the equivalent poinnt c)the ph at the equivalence point
*November 29, 2014*

**statistics**

X~Bin(400,0.01) np= 4 P(x>=4)= 1-P(Y<=3) 1-[P(X=3)+P(X=2)+P(X=1)+P(X=0)] 1- ((e^-4)*(4^3))/3! +((e^-4)*(4^2))/2! + ((e^-4)*(4^1))/1! +((e^-4)*(4^0))/0!= 1- 0.4330= 0.567
*November 2, 2014*

**Psychologic**

all of the above
*October 26, 2014*

**differential equation**

in the theory of learning the rate at which the subject is memorized is assumed to be directly proportional to the amount left to be memorized. also the rate at which the subject is forgotten is directly proportional to the amount memorized in their time t. suppose M denotes ...
*October 26, 2014*

**Statistics**

part b.) p should be 0.1915 so 19 students
*October 23, 2014*

**Statistics**

So taking note of the above corrections. **Correction part a.)** p = 0.6915 p * n = 0.6915 * 100 = 69.15 approx = 69 = 69 students passed the test **Correction part b.)** 1.59 = (X-25)/10 = 40.9 marks **Corrections part c.) = (27-25)/10 z = 0.2; Z-table(0.0793) = 0.0793
*October 23, 2014*

**Statistics**

My answer for c.) 0.4772
*October 23, 2014*

**Statistics**

My answer for b.) 5.59% = 0.0559 0.0559 ~ 0.14(frm Stand/Normal Table) 0.14 = (x-25)/(10/sqrt(100)) = 25.14 x = 25.14 marks
*October 23, 2014*

**Statistics**

My answer for a.) P(X>20) = P[(x'-u)/(sd/sqrt(n)) > (20- 25)/(10/(sqrt100) p(Z>-5) = 0.1915 1.0 - 0.1915 = 0.8085 0.8085 * 100 = 80.85 ~ 81students passed the test
*October 23, 2014*

**Statistics**

The marks of 100 students in an examination are normally distributed with mean of 25 marks and a standard deviation of 10 marks. (a) Given that the pass mark is 20, estimate the number of students who passed the examination. (b) If 5.59% of the students obtain a distinction by...
*October 23, 2014*

**Biology check my answers**

Every eukaryotic cell has genetic material, A Nucleolus , A cell membrane, Ribosomes,and a Cytoplasm. The genetic material in the cell, (the DNA) is in a chromatin which allows the DNA to then fit inside the nucleolus. The nucleolus makes ribosomal subunits in the eukaryotic ...
*October 18, 2014*

**Finance**

National Health Corporation (NHC) has a cumulative preferred stock issue outstanding, which has a stated annual dividend of $8 per share. The company has been losing money and has not paid preferred dividends for the last five years. There are $350,000 shares of preferred ...
*October 13, 2014*

**math**

your team has two x·sq-tiles, three x-tiles, and one unit tile on his desk and another person has one x·sq- tile, five x-tiles, and eight unit tiles on her desk. You decide to put all of the tiles together on one desk. What is the name for this new group of tiles?
*September 17, 2014*

**xxx**

no idea ,so pls help
*September 15, 2014*

**xxx**

If ( cos ᶿ + sin ᶿ)= ã2 cos ᶿ, show that (cos ᶿ-sin ᶿ) = ã2sin ᶿ
*September 15, 2014*

**English**

Time: Saturday, from 9 A.M. to 6 P.M. Does this sentence need the comma after Saturday?
*September 9, 2014*

**English**

Bid and buy wonderful prizes from around the world. Does this sentence need a comma?
*September 9, 2014*

**vector**

find equations for the osculating normal and rectifying planes to the curve x=3t-t^2, y=3t^2, z=3t+t^3 at point where t=1
*August 29, 2014*

**PHYSICS**

A 15g bullet is fired horizontally into a block of wood with a mass of 2.5 k and embedded in the block. Initially the block of wood hangs vertically and the impact causes the block o swing so that its center of mass rises 15cm. find the velocity of the bullet just before the ...
*August 6, 2014*

**electric circuit**

Some types of fuses used to protect electric meters have resistances of several ohms. Is this objectionable (a) in ammeter circuits and (b) in voltmeter circuits? Why?
*July 29, 2014*