Wednesday

May 6, 2015

May 6, 2015

Total # Posts: 81,082

**Physics**

A remote control model airplane connected to a string is flown in a circle with a radius of 0.348 m about a fixed axis with an angular velocity of +1.47 rad/s. The plane’s throttle is increased, so that it acquires an angular acceleration of 2.18 rad/s2. After 0.490 s ...
*April 23, 2015*

**science**

Hopefully someone else can help you with this. sorry!
*April 23, 2015*

**science**

For your second one. I think, No. Viable electric cars, I think are probably many years in the future..
*April 23, 2015*

**science**

are there answer choices?
*April 23, 2015*

**math**

Looks like you have your geometry down ok. Now for that spelling . . .
*April 23, 2015*

**math**

We know it's not a square or rectangle Which one do you think a trapezoid rhombus, or parallelogram ? well it says that the sides are equal in length, so it has to be more than likely a rhombus Rhombus is the quadrilateral their looking for, I'm pretty sure
*April 23, 2015*

**math**

Square..
*April 23, 2015*

**Math**

2 is also correct
*April 23, 2015*

**Math**

isn't 1 permutations? Sometimes it's hard to tell. I would think it is, but you could be right 4 is correct
*April 23, 2015*

**math**

A my diver jumped from an airplane. He used his watch to time the length of his jump. His height above the ground can be modelled by h= -5(t-4)^2+2500, where h is his height above the ground in meters and t is time in seconds from when he started his timer. a) how long did the...
*April 23, 2015*

**Spanish**

en cuanto = as soon as en caso de que = in case, in the event that luego que = then that después = after Buena suerte!!
*April 23, 2015*

**stats**

go to hell, i'm stuck too
*April 23, 2015*

**stats**

If the effect size of a hypothesized phenomenon is .8, then how many subjects are needed to achieve .5 power? alpha = .05; two-tailed
*April 23, 2015*

**statistics**

if alpha increases will beta increase or decrease? or are they not related?
*April 23, 2015*

**Physics**

A gun converts 200J of stored energy into kinetic energy of the 0.02kg bullet. What is the speed of the bullet as it leaves the gun? If the gun is fired straight up how high will the bullet go?
*April 23, 2015*

**Physics - typo**

oops. That's -10.73, not 10/73
*April 23, 2015*

**Physics**

a = (Vf-Vi)/t = -26.82m/s / 2.5s = -10/73 m/s^2 Now recall F=ma
*April 23, 2015*

**Physics**

A car can stop from60mph in 2.5 sec. If the car has a weight of 3225 lbs what force acts on the car?
*April 23, 2015*

**statistics**

THE ANSWER IS .15 USE BINOMIAL
*April 23, 2015*

**statistics**

THE ANSWER IS .15 USE BINOMIAL
*April 23, 2015*

**math**

Diagonalize the given matrix and find an orthogonal matrix P such that P−1AP is diagonal -2 3 3 3 -2 3 3 3 -2
*April 23, 2015*

**Algebra**

The graph of the linear equation y=mx+b has an x-intercept of 6. What is the x-intercept of the graph of the linear equation y=3mx+b?
*April 23, 2015*

**English**

Abby, no one here has read this play, or seen it. This is at least the fourth time we've been asked, but no student will tell us who wrote it so we COULD reed it. There are several plays and screenplays based on Chekov's story.
*April 23, 2015*

**nutrition**

a person can achieve optimum daily nutrition by
*April 23, 2015*

**health**

thank you
*April 23, 2015*

**health**

true or false. by taking safety precautions, individuals can remove some of the opportunity for crimes to occur true am i right
*April 23, 2015*

**L.A. The Governess :)**

Reed, no worries, Andrew helped me.. thank you so much for all you do :) Thank you so much Andrew! :D I helped you with your science:)
*April 23, 2015*

**L.A. The Governess :)**

Thank you Reed! Here is the excerpt. Does my answer still make sense? Thank you again :)
*April 23, 2015*

**For those who haven't read The Governess**

For those of you whom haven't read it, here is the excerpt for this question: Julia. As you wish ma'am. [She curtsies and starts to go again.] Mistress. Julia! [Julia stops.] Is it possible to be so spineless? Why don't you protest? Why don't you speak up? Why ...
*April 23, 2015*

**L.A. The Governess :)**

The literature is The Governess by Neil Simon. What do you learn from these stage directions in The Governess? [The faintest trace of a smile her lips] A. Julia is suddenly very happy. B. Julia knows something Mistress doesn't know. C. Julia has made an important decision...
*April 23, 2015*

**Science**

Omg, thank you soo much!!! Sorry I had to bribe you, heh :) Here, as I promised: 1 A 2 A 3 D 4 C 5 B 6 A 7 C 8 B 9 C 10 B 11 C 12 D 13 D 14 True 15 True 16 False 17 False If you need help with essays, no problem, I will be here :) These are the answers I put and got a 100% :) ...
*April 23, 2015*

**Science**

What do you learn from these stage directions in The Governess? [The faintest trace of a smile her lips] A. Julia is suddenly very happy. B. Julia knows something Mistress doesn't know. C. Julia has made an important decision. D. Julia is thinking about someone she loves. ...
*April 23, 2015*

**Science**

I have checked you Language Arts, and I have the 100% answers to these questions. If you help me on my question I will help. It is called "L.A. The Governess :)" and was posted today. I will help you as soon as you help me, and I guarantee you a 100 on these ...
*April 23, 2015*

**social studies **

what conclusions can you make based on Riel's speech?
*April 23, 2015*

**Math**

Yes Reiny is 100% right, I mixed up the values :)
*April 22, 2015*

**Math**

You are going 2 to the right (positive), and 7 up (positive again). Where did you get the negative sign???
*April 22, 2015*

**Math**

Its me again, I strongly believe C :)
*April 22, 2015*

**Math**

I will help if you please help me with my art. I in no way meant to offend you :(
*April 22, 2015*

**Math**

Points W(-5,3), X(-1,6), and Y(5, -2) are three vertices of a rectangle. Determine the coordinates of the fourth vertex.
*April 22, 2015*

**Art please help me :)**

The lesson we had said elegance and simplicity. The question says the throne is contrasting to the french chairs that are extravagant...doesn't extavagance show power? I in no way meant to offend you in any way by copying your question, i was just seeking help... im very ...
*April 22, 2015*

**Art please help me :)**

Pictures: Pair of Armchairs by unknown artist Digital image courtesy of the Getty's open content program. I couldn't find this picture in google. Picture 2: Ceremonial Chair(The Elgin Throne) by unknown artist it was the first picture in google. The detailed French ...
*April 22, 2015*

**Art please help me :)**

Was the other one D? :( I never meant to offend you, I was unsure:'(
*April 22, 2015*

**Art please help me :)**

Heh
*April 22, 2015*

**Art please help me :)**

Thank you sooo much Ms.Sue :)
*April 22, 2015*

**Art please help me :)**

Picture: Contemporary Retro Molded Black Accent Plastic Dining Armchair with Wood Eiffel Legs its the first picture in google. This wooden and plastic chair design by Ray and Charles Eames communicates a a sense of which artistic charateristic? A. Balance B. Rhythm C. Color D...
*April 22, 2015*

**Math**

Determine the value of y so that the line segment with endpoints P(3, y) and Q(-3, -1) is parallel to the line segment with endpoints R(-4, 9) and S(5,6).
*April 22, 2015*

**Math**

A line segment has endpoints C(-3,-6) and D(-6,-4). Point P is such that PC is perpendicular to CD. Determine the coordinates of P if P is on the x-axis.
*April 22, 2015*

**Math**

There are 2 points on the graph V(4,12) U(a,0) The line has a slope of 2. What is the value of a?
*April 22, 2015*

**Problem solving**

Two numbers that have a sum of 7869 and a difference of 1879
*April 22, 2015*

**Art**

I agree with Writeacher, was it A? This means a lot :)
*April 22, 2015*

**Art**

Saw lesson and agree 100% :) Were the other ones right? Please go back amd tell us if you got the others right, and what it was if not...it means a lot. I already put what i think the others were under their individual post :)
*April 22, 2015*

**linear algebra urgent**

^ btw that matrix has 4 values in it.
*April 22, 2015*

**linear algebra urgent**

For the orthogonal matrix A = 1/sqrt(2) -1/sqrt(2) -1/(sqrt(2)) -1/sqrt(2) verify that (Ax,Ay)=(x,y) for any vectors x and y in R2. Can someone please explain this
*April 22, 2015*

**Art**

I saw the lesson and it hints at D... was it D??? Thank you so much, it means a lot to me :)
*April 22, 2015*

**Math**

all divisors must have the same list of primes, with powers the same or less. (b) does not work, since the dividend does not include a 5. so, what is your answer?
*April 22, 2015*

**If you answer these questions I will pass this cla**

so what? you still won't know what you're doing...
*April 22, 2015*

**pols210 d001 win test answer**

answer to quiz in pols210 d001 win
*April 22, 2015*

**Math**

They all look good to me.
*April 22, 2015*

**math**

C looks good to me
*April 22, 2015*

**math**

1. 5*3^n A.5,15,45,135 B.15,30,45,60 C.15,45,135,405<----- D.0,15,45,135
*April 22, 2015*

**Geometry**

The measure of the consecutive sides of an isosceles trapezoid are in the ratio 8:5:2:5 the perimeter of the trapezoid is 140 inches if it's height is 20 inches find the area of the trapezoid
*April 22, 2015*

**Math**

Determine whether, for any set A, it is true that P(A) = P(U) − P(A). If it is true prove it, if it is not, give a counterexample.
*April 22, 2015*

**Social Studies**

Please help Ms. Sue!!! The following, "People want to ensure that Puerto Ricans always identify with the spanish language and culture." Provides support for which of the following statuses for the country of Puerto Rico? a. Separate Nation b. U.S. Commonwealth** c. U...
*April 22, 2015*

**check 1 easy question**

My answer is D
*April 22, 2015*

**check 1 easy question**

Which word is most similar to the word intuition? refinement principles reasoning insight <----
*April 22, 2015*

**Calculus**

F(x)=Integral of (-12sinx/cos^2x) dx+c F(0)=4. Find C
*April 22, 2015*

**Statistics **

The daily sales of a retail store are normally distributed with a standard deviation of $500. If the probability that sales will be less than $10,000 in any one day is 40%, what are the mean daily sales?
*April 22, 2015*

**Statistics **

What is the lowest z-value for the highest 2% of observations on the standard normal distribution?
*April 22, 2015*

**math**

a road crew must clear a hill that is 110.0 feet tall so that a new road can be built, they are to clear 11 1/2 feet of the hill each day, find the equation in slope intercept on the line that represent to height
*April 22, 2015*

**Algebra IMPORTANT**

2k+ 5k+1 + 10k+2 are three successive terms of a geometric sequence find the value(s) of k
*April 21, 2015*

**Math**

Use mean median or mode to predict how many strokes need to complete a golf ball
*April 21, 2015*

**chemistry**

pH=6.5
*April 21, 2015*

**chemistry**

One way to raise the pH of an acidic lake (and restore aquatic life) is to add limestone (CaCO3). How many grams of CaCO3 are needed to neutralize 1.2kL of the acidic water from the lake if the acid is sulfuric acid? H2SO4(aq)+CaCO3(s)→CO2(g)+H2O(l)+CaSO4(aq)
*April 21, 2015*

**Bio**

If a person’s liver makes 1000 mg/hour of urea during an average day, what would the concentration of urea be, in mg/mL, for a person making 1.0 L of urine during a particular day? What would it be for a person making 1.5 L of urine during a particular day?
*April 21, 2015*

**Math**

A car measures 20 feet. What is the length of a model car if the scale factor is 1:64 inches? I can't show my work because i don't even understand any of it!
*April 21, 2015*

**Chemistry**

What is the volume of 2.0 moles of an ideal gas at 290 K and 2.8 atm?
*April 21, 2015*

**Social Studies**

Then i think its D
*April 21, 2015*

**business**

8. Student Betty says that physical distribution includes both transportation and storage. Student Bob says that exchange includes both buying and selling. Which student is correct? A. Bob only B. Neither C. Both D. Betty only
*April 21, 2015*

**business**

21. _______ ratios measure the degree to which a firm relies on borrowed funds in its operations. A. Retail earning B. Wholesale earning C. Earnings per share D. Leverage (debt)
*April 21, 2015*

**business**

28. The North American Free Trade Agreement (NAFTA) can be expected to A. increase trade restrictions among the member nations. B. result in political unification of the member countries. C. increase the number of low-wage jobs in the U.S. D. vastly increase trade among the ...
*April 21, 2015*

**intoduction to business**

35. Union workers at an auto parts plant go out on strike. In response, management closes the plant. This tactic is a A. cooling-off period. B. secondary boycott. C. lockout. D. strikebreaker.
*April 21, 2015*

**calc**

the i and 3 are separate as well
*April 21, 2015*

**calc**

yes. so i 3 (1+i) (-i)
*April 21, 2015*

**calc**

Find the inverse of each of the following matrices, if possible [i 3 1+i -i]
*April 21, 2015*

**Religon**

This year academically for me has been tough. But, I know that by myself I can do nothing, but with God I can accomplish everything. I'm happy to say the semester is almost over and through God's strength alone I have been able to get through my classes :) I know that ...
*April 21, 2015*

**Life orientation**

Describe the human right violation(Xenophobia) that is taking place in your community
*April 21, 2015*

**math**

Factorise the following 1) a^3 - b^3 - a - b 2) a^2 - b^2 + 10a - 2b + 24
*April 21, 2015*

**math**

xiao
*April 21, 2015*

**Chemistry**

a student carefully measures the melting point of a solid material. she measures the range to be 81.2 - 83.7 degree. assuming she has done the measurement correctly. what can she conclude about the sample, and why
*April 21, 2015*

**Chemistry**

You are given potassium carbonate solid and potassium sulfate. Both are white solids. How would you separate potassium carbonate and potassium sulfate?
*April 20, 2015*

**Science**

In what ways are electric generators and motors similar? In what ways are they different?
*April 20, 2015*

**Chemistry**

I sincerely apologize. Here's the reaction: 2C(s) + O2(g)→2CO(g)
*April 20, 2015*

**Chemistry**

Can someone answer this question? The enthalpy of combustion of solid carbon to form carbon dioxide is -393.7 kJ/mol carbon, and the enthalpy of combustion of carbon monoxide to form carbon dioxide is -283.3 kj/mol CO. Use these data to calculate ∆H for the reaction. ...
*April 20, 2015*

**4th Math**

sam cut a pie into equal slices. there are only 3 slices left. the angle measure for the 3 slices is 72 degrees. How many slices did sam cut the pie into? 360
*April 20, 2015*

**Calculus**

A fence 4 feet tall runs parallel to a tall building at a distance of 2 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
*April 20, 2015*

**HELP**

a car wheel turning at 0.5 is brought to rest by the brakes in exactly two revolutions. what is the angular acceleration of the wheel?
*April 20, 2015*

**san jac**

a sample of nitrogen gas contain 5.0mol in a volume of 3.5L calculate the new volume of the container if the pressure and temperature are kept constant but the number of moles of nitrogen is change to 2.5 mol
*April 20, 2015*

**HELP please**

a car wheel turning at 0.5 is brought to rest by the brakes in exactly two revolutions. what is the angular acceleration of the wheel?
*April 20, 2015*

**math**

Determine the number of divisors of the integer 4312440.
*April 20, 2015*

**PHYSICS**

a 0.30-m radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s^2 over a 3.54-s interval
*April 20, 2015*