MS

This page lists questions and answers that were posted by visitors named MS.

Questions

The following questions were asked by visitors named MS.

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed at the instant it drives off the edge of the dock?

When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have reacted?

Eq of curve is y=b sin^2(pi.x/a). Find mean value for part of curve where x lies between b and a. I have gone thus far- y=b[1-cos(2pi x/a)/2]/2 Integral y from a to b=b/2(b-a)-ab/4pi[sin(2pi b/a)-sin2pi) MV=b/2-[ab sin(2pi b/a)]/(b-a) Ans given is b/a. I...

I have done Int(1/ax)dx=1/a*Int(1/x)dx =[(log x)/a] + C. The working in the book is Int(1/ax)dx=1/a*Int(a/ax)dx =[(log ax)/a]+C. Which one is correct and where is the error in my working, if so?

s=çdx/(4+5cos x). By using t-substitution, i.e. t=tan(x/2) we get cos x=(1-t^2)/(1+t^2) and dx=2dt/(1+t^2). Substituting in s and simplifying, we get s= 2çdt/4(1+t^2)+5(1-t^2)=2çdt/(9-t^2). Using standard result çdx/(a^2-x^2)=1/a*arctanh (x/a) we get...

How to integrate dx/(4-5 sin x) using t-substitution method(i.e. taking tan x/2=t)?

S=Integral xdx/sqrt(x-1). I have proceeded thus- Put sqrt(x-1)=u then x=u^2+1 and dx/sqrt(x-1)=2du. S=(u^2+1)2du/u =(2u+2/u)du=u^2+2 log u +C =(x-1)+ 2 log sqrt(x-1)=(x-1)+log(x-1)+C Required answer is 2/3*(x+2)sqrt(x-1)+C Have I proceeded correctly and i...

Integrate x dx/(1-x). I have proceeded thus- Int xdx/(1-x)=int -(x-1+1)/(x-1) =-Int[1+ 1/(x-1)]dx =-Int dx-Int dx/(x-1) =-x-log(x-1). On differentiating, we get original expression- d/dx[-x-log(x-1)]=-1-1/(x-1)=-x/(x-1)=x/(1-x). However, the answer in the...

Find the area cut off by x=4 from the hyperbola x^2/9-y^2/4=1. Answer is 4.982 in the book. I have proceeded as under: Y=2/3*sqrt(x^2-9) and rhe reqd. area is double of integral 2/3*sqrt(x^2-9) from 3 to 4. Int= 2/3*[xsqrt(x^2-9)/2 – 9/2*log{x+sqrt(x^2-9)...

Find the area cut off by x+y=3 from xy=2. I have proceeded as under: y=x/2. Substituting this value we get x+x/2=3 Or x+x/2-3=0 Or x^2-3x+2=0 Or (x-1)(x-2)=0, hence x=1 and x=2 are the points of intersection of the curve xy=2 and the line x+y=3. Area unde...

Q: If y=sinx/(1+tanx), find value of x not greater than pi, corresponding to maxima or minima value of y. I have proceeded thus- Equating dy/dx=0 we get{ (1+tanx)cosx-sinx.sec^2 x}/(1+tanx)^2=0……..(A) Or cosx+sinx=sinx.sec^2 x or cosx= sinx.sec^2-sinx Or...

What is the order of adjective in a sentence?

Answers

The following answers were posted by visitors named MS.

Does it indicate that the answer 'b/a' given in the book may be wrong? I tried many times but could not get it.

I reached upto Int csc u sec^2 u du from u=arctan 1 to 2 but am not clear how to go further.

If time is on X axis and distance on Y axis then units will be m/sec^2.

Angle will be arctan 15/100 =arctan 0.15=8.53 degrees.

23.5kmph=23500/3600=6.53m/s v=u+ft=6.53+0.98*4=6.53+3.92=10.45m/s

v=u+ft or f=(v-u)/t=(10.6-13)/4=-2.4/4 =-0.6m/s^2. Now the u is 10.6m/s and f=-0.6m/s^2 v=u+ft=10.6-0.6*2=10.6-1.2=9.4 m/s^2

v^2=u^2+2fs or f=(v^2-u^2)/2s =(7.4^2-79^2)/(2*710) =(54.76-6241)/1420=-4.36m/s^2 Negative acceleration (i.e. against the direction of motion)of 4.36m/s^2

3x-y=2 Multiplt it by 3 9x-3y=6 Add to it the other eq. 9x+3y=4 You get 18x=10 or x=5/9 Substitute in any eq. 3*5/9-y=2 or y=15/9-2=5/3 -2 or y=(5-6)/2=-1/6. Check: 3*5/9-(-1/6)=2 or 5/3+1/6=2 or (10+2)/6=2 ok. 9*5/9-3*1/3=4 or 5-1=4 ok.

That will be sec^2 per m but that is most unlikely to be required as generally time is taken as independent variable and variations are measured per unit time i.e. time rate of variation.

Thank yoy very much Mr. Steve for making it so clear and easy.

Thanks. I checked and really got them as same. But can we analytically show them to be so? I tried but could not make it. Please guide.

Thank you very much, Mr. Steve. It was actually x^2/2*logx but I feel it won't matter.

Thanks Mr. Steve for the guidance.

Thanks for reply. Sorry for confusion. Second and II DC are same and only mean second diff. coeff. or derivative d^2y/dx^2. Nr is numerator and A is dy/dx as shown as equation(A)in the first line of answer. What I meant was that for calculating second DC...

Thank you very much for this valuable guidance.

Which version of Word are you studying? C should be right, but not for all versions.

Then C should be right.

No image to see!

What is of utmost importance to the country as a whole?

This has been answered before. A is correct. Your teacher needs to go back to school!!

Be sure to write up what YOU THINK, and someone here will critique your work for you.

I agree with all your answers. I would say modem and router for the third one, but this will work.

Writeacher means are you using Word or Excel or what program?

it's -- this contraction means 'it is' or 'it has.' What does 'its' mean? Use a good dictionary to find out.

What program are you using?

Microsoft what? Word? Excel? Publisher? Access? What??

Very good! Whenever you get questions like this, you need to go into that program and try things out. That's the best way to learn these kinds of things. Do them!! =)

Some of the relative pronouns that are used to start relative clauses are these: who whom which that whose Which of these is in that sentence? What are the rest of the words that go with it to complete the clause?

She said that the ones that did work had some sort of cushion on the ends, like balloons or cotton balls. If it's only straws, the force of the impact will crush the straws and the egg with it.

Mass = Density X Volume Mass = 727.7 CM^3 X 19.3 g/cm^3 Mass = 14,044.61 g Since a pound is approximately 454 g Mass = 14,044.61/454 Mass/weight = 30.9 lbs

a) taxes on real estate

Valerie, What is it in Ms. Sue's message you don't understand? It's crystal clear -- no hidden message!

1. you will conduct research and examine documents that show the thoughts of immigrants* 2. you will conduct research and examine documents that show the thoughts of people who opposed immigration* 3. use the research and primary documents to write an ess...

You = Teresa Do you see why?

Corrector must be an idiot! Did he/she not look at the dates of these posts?

No one here will write your assignments for you, but if you post what YOU THINK, someone might be able to critique your thinking and writing.

D is correct. Emma is confused. The question isn’t about tourism!

Go back to bobpursley’s answer to your previous post, and click on the link he gave you. Read carefully. If you still need info after reading that article, be sure to use any other linked articles in the References and External Links given at the bottom.

Isn’t that a question? Also known as an interrogative sentence? If it were written correctly, we’d be able to tell better. Whose cake is the best?

Nope! And if anyone posts them, you’ll both be banned. However if you post 4 or 5 of the hardest questions plus what YOU THINK the answers are, someone here will be able to check your work.

You must have copied and pasted that whole test (or whatever) from an online class you’re taking. That’s why the spacing is so awful. Anyway, every online school I know of provides its clients with texts and/or other forms of study materials, in print or...

I agree. Creon was king, and to him, only his word mattered.

That’s two wrong guesses. Please don’t post about this question again. But do look up “subject-verb agreement” on Google, and read and learn.

The quotation marks are used correctly, but no comma is needed in that sentence.

Be sure to read your paper out loud to someone who has a printout of your paper. Find and fix any run-ons and fragments. Then run it through www . grammarly . com

When and where was it painted? What was society like when the painter painted it? In other words, what was the background of the painter and his/her times? Look up the word ‘context’ on Google for more ideas.

And you repeated this question because ... ?

Go to Google. Type in <b>conjugate ser Spanish</b> (Or whatever you need). Read, study, memorize. Continue ...

The question says, “in Europe.” Which two countries are in Europe?

Read and study about Greek mythology. Then read and study about Aristotle. What conclusions can you draw?

aka Writeacher — Go back and read and reread your text. Augustus was the Roman emperor after Julius Caesar. You should also look up the definition of ‘emperor.’

Why did you post all this again? Go back and read school lover’s reply earlier. He/She’s right.

Southwest where? Northwest where? When?

Jiskha has no expert in upper levels of Spanish at present. Sorry.

Already answered below.

All are grammatically correct, but #1 is not used for the same purpose as #2 and #3.

I’d give it no point.

Yes! All the cheaters and would-be cheaters should go to brainly and let the tutors at Jiskha get back to real tutoring for students who want to learn. Go, go, go —- it’s at brainly (dot) com!

Wasn’t he the first president? What would a first one do?

You might also put your essay through www grammarly com and see what they say.

Yes. The word “like” tells you it’s a simile.

uniform resource locator It’s the formal term for ‘web addresses.’

Have you written your outline yet? Have you written the rough draft of the body of your paper yet? If you haven’t, do those first. You can’t properly introduce something you haven’t written yet. Google ‘how to write an essay’ and then read and follow dire...

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Then check out the Ed tech post earlier today. Bobpursley’s reply is there.

No. Please check your text or look up the term at webopedia (.) com

No. That’s 2 wrong guesses. Please don’t post about this question again.

I’d go with your first choice.

What’s GACA? 2 of your answers are right

Remove the word "that" and all will be OK.

Ms. Sue is right. None of these answer choices is very good. The only one that comes close is B -- and that weakness led to Philip of Macedon's ability to start conquering areas and his son Alexander (the Great) to expand on his father's empire. You shoul...

1-6 are fine. 7 is not.

2 is correct, yes.

Anyone who goes on public websites like Jiskha should not expect privacy! If you don’t want the admins to learn info about you, don’t use the website!

Which of those choices has anything to do with art?

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Yes. A is the only one with a pronoun serving as the subject.

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shortage - not enough to go around surplus - more than enough to go around

1-800-273-TALK (8255) Please call the Suicide Hotline and speak with a specially trained person.

Please read and reread what you posted. Do you understand why no one except you can answer these questions?

Look for maps with countries’ boundaries inside continents, or states/provinces inside countries, or counties inside a state. Another way is to use google to search for this: U. S. House districts in ________ (Enter a state's name in the blank.)

Just Google “Operation torch” and you’ll find out quickly.

Go to www.google.co.za and search for “careers math business”

It seems he doesn’t understand the directions or sets of words any more than I do!

Do you understand why no one has responded? What poem? What child?

All of the above!