Saturday

January 21, 2017
Number of results: 113,756

**physics ---- really dnt get this at all**

Will the photoelectric effect change for different targets

*May 2, 2011 by ashley --- HELP PLEASEE!!!*

**physics ---- really dnt get this at all**

Marks: 3 If the velocity of the particle is reduced by a factor of two, by what factor does the de Broglie wavelength change? Choose one answer. a. 2 b. 4 c. 1/2 d.1/4

*May 1, 2011 by ashley --- HELP PLEASEE!!!*

**physics ---- really dnt get this at all**

A 5.00 cm tall candle is placed at a distance of 50.0 cm from a double convex lens having a focal length of 15.0 cm. What is the image distance? Choose one answer. a. -21.4 cm b. 21.4 cm c. 65 cm d. 35 cm

*April 30, 2011 by ashley --*

**physics ---- really dnt get this at all**

A small electric motor is used to lift a 0.50-kilogram mass at constant speed. If the mass is lifted a vertical distance of 1.5 meters in 5.0 seconds, the average power developed by the motor is

*May 8, 2011 by ashley --- HELP PLEASEE!!!*

**physics ---- really dnt get this at all**

The third harmonic of a guitar string has a frequency of 170 Hz. What is the length of the guitar string if the speed of the waves on the string is 125 m/s? Choose one answer. a. 1.103 m b. 2.206 m c. 0.368 m d. 2.040 m

*April 30, 2011 by ashley --*

**physics ---- really dnt get this at all**

A total charge of 25 mC passes through a cross-sectional area of a nichrome wire in 10 s. How many electrons pass through the cross-sectional area in 16 s? Choose one answer. a. 2.5 x 1017 electrons b. 2.5 x 1019 electrons c. 2.5 x 1016 electrons d. 2.5 x 1021 electrons

*May 31, 2011 by ashley --- HELP PLEASEE!!!*

**physics ---- really dnt get this at all**

if friction is set to zero and on planet Earth. Now, if you attach a mass to the spring from its initial equilibrium position, it vibrates forever in simple harmonic motion. Why doesn't it come to rest after stretching by a distance 'd'; proportional to the weight of the mass...

*April 10, 2011 by ashley --- HELP PLEASEE!!!*

**Physics**

is it true or false the monochromatic light has photons of different energies? PLZ DNT 4GET 2 XPLAIN IT

*October 10, 2010 by Georgina*

**math**

i dnt know how to do this can u8 help me

*October 3, 2012 by nicki*

**Mrs. SUe**

Curiousity; Do you get paid for all for all of this hard work that you do??? BEcuase you are always on helping all students on a ton of subjects.. I really appreciate what you do and you deserve to get paid for all the students you are really helping, without giving them the ...

*May 28, 2009 by Sarah*

**Physics**

Is true or false- a lamp functioning at peak voltage (AC) will glow with the same brightness when connected to a battery of the same voltage (DC)? PLZ DNT 4GT 2 XPLAIN DA ANSWER

*October 10, 2010 by Georgina*

**PHYSICS-Help required**

My physics questions are not on graphs, this is just a practise quiz I'm doing. All the questions I've done so far were not guessed answers, I did my work on a separate piece of paper, all I really had to do was divide. The other questions above that I need help on, cause I ...

*July 21, 2010 by Anonymous*

**7th grade math**

Hi! What is the formula of the volume and surface area of cylinders? I checked my textbook and it didn't really say. My teacher didn't really explain at all. If somebody could help explain this it would be really great. Please help! Thank you!

*September 24, 2011 by saranghae12*

**Physics**

I have a resistor with a voltage across it and and a current through it that satisfy the passive sign convention. the problem wants me to write three different ways in which the power dissapated by the resistor can be calculcated. i know Ohms law v=ir and watts law p=iv but i ...

*September 22, 2009 by Bobby*

**physics**

I have a resistor with a voltage across it and and a current through it that satisfy the passive sign convention. the problem wants me to write three different ways in which the power dissapated by the resistor can be calculcated. i know Ohms law v=ir and watts law p=iv but i ...

*September 22, 2009 by Tim*

**US HISTORY THIS IS URGENT**

what was the religion(s) of the people of massachusetts when it was first founded? PLEASE DNT GIVE ME A WEBSITE

*September 20, 2009 by keke*

**French**

I am doing a presentation on the efficiency of appliances. I am going to be comparing the past and the present and then France and the US. Do you guys know of any good websites that would talk about any of this. All I can really find is different brands of appliances and then ...

*April 4, 2012 by rebekah*

**french**

I am doing a presentation on the efficiency of appliances. I am going to be comparing the past and the present and then France and the US. Do you guys know of any good websites that would talk about any of this. All I can really find is different brands of appliances and then...

*April 5, 2012 by rebekah*

**Thank Jiskha tutors**

I really appreciate all that you tutors do for us, I know we may be a bit demanding sometimes XD but we really love how you guys are always there to help us out. Coming from experience, I've had some past teachers that aren't as willing to help us when we do not understand and...

*November 16, 2014 by Andrew*

**Physics**

Cn u plz gv explaination 2 d solutions steps by steps briefly?Cz i really dnt understand hw 2 apply d formula wen i revise it nw. Much appreciated. [g=10 m/s^2 ] a fixed wedge whose smooth sloping face is inclined at 30 degree to the horizontal. A particle A, of mass 2 kg, ...

*September 29, 2008 by Warm*

**Foreign languages**

I left out this short paragraph. Could you please check it? 1) I really hope everthing is Ok with you. My students are really looking forward to starting the email partnership. I would be therefore be extremely grateful to you if you could let me have all the email adresses by...

*April 26, 2012 by Mike*

**math**

am having prob..wv zs numb..given that f(x)=x+6/2x,find f(4) and f inverse(x) am not sure abt the answer the frst 1,i get 1.25 and the second oneeee i dnt knw hw to do it

*September 16, 2008 by pallaa*

**Physics**

What do we call the combinations of all forces that act on an object? I really do not know this!

*October 11, 2009 by Jake*

**MATH**

I get really confused with math . I am great with all of the other subjects . In fact I get all B's except for Math , I get 1's !!! I really need help with it . I ask for help but whenever people help me and put it in the most simplest way possible .. I still don't get it . I ...

*September 1, 2011 by Kaylyn*

**us history**

what role did native americans play in the French and INdian war? please dnt give me any websites for some reason my computer won't open them up.

*September 21, 2009 by kayla*

**i dnt get it**

My tens digit is double my ones digit. I am less than 70 and greater than 60

*October 12, 2010 by rita*

**geography,life sciences,maths lit and consumer studies**

am in grade 11 so i dnt knw wht career i wnt to do after finished matric so plz help me

*March 27, 2015 by tears*

**Physics**

Cn u xplain the solutions steps by steps? Cz i really dnt understand wen i revise it nw. Tnxs u kindly. Two particles A & B are connected by a light inextensible string passing over a smooth pulley P. Particle A, of mass m, lies on a plane inclined at 30degree to the ...

*September 29, 2008 by Spirit*

**Physics**

Is this true or false? All objects moving in a circle are accelerated. I really don't uderstand this question.

*August 28, 2012 by bobby*

**Physics**

Sorry to double pos, I just really need help whit this. You push an air-hockey puck along a surface with negligible friction while riding in a truck as it moves at a constant velocity in Earth's frame of reference. What do you observe? Why? I'm tempted to say that the puck ...

*March 1, 2009 by Katja*

**ingqayizivele high**

Am doing math lit ,geography,history n life sciences I dnt knw which career to choice can u plz help me .cal m 4 help on 0625113520 plz

*August 30, 2015 by lebo*

**Calculus**

I'm studying infinite series and am really struggling with memorizing all the tests for convergence in my book, there's like 10 of them. I don't think I'm going to be successful in memorizing all of them. I will never be asked in my course to use a specific test to determine ...

*August 17, 2011 by Lee*

**Science 7R**

contains all the same kind of cell???? what part of a cell is that or something? AIDS???? parts of a animal or plant cells (im not going to list them all because you guys already know) ???? electron microscope ???? tiisue ???? vaccine ???? virus ??? host cell ???? organ ???? ...

*December 14, 2011 by Lauren*

**Accounting, maths literacy, business studies, economics**

am doing matric this year so I dnt knw which career I can do next year with those subjects.......plz I need help

*January 6, 2015 by lerato Veronica*

**explaining the questions**

• the contribution of the each individual member; • your recommendation as to how the marks should be distributed among the members. i have to write a paragraph for those 2 and many more...but i just dnt understand what these two are asking...pls help...thanks

*July 31, 2010 by thara*

**Reading**

What does this sentence mean? I dnt understand what it is saying As for the Sasanid rule, a well-engrained class system was in place defining from birth whether one would be a priest, warrior, secretary, or commener.

*November 5, 2011 by Mike123*

**To SraMcJin**

Sra, I want to thank you for all your help on my English poetry. You really are good at poetry. Thank you very much, I really appreciate it:-)LOL

*May 4, 2010 by Sara*

**math lit ,geography,history,life science,LO**

Am in grade 10 and am doing these subjects and I dnt knw what kind of career choice I can choose please guys help me out please

*May 8, 2014 by rebaballetswe lebakeng*

**COURSE HELP PLEASE ms sue qq**

What course should i really take if i want to be a pediatrician ? COURSE HELP PLEASE - Ms. Sue, Friday, January 31, 2014 at 11:47am You should take all of the hardest courses offered, especially in math and sciences. ================ HI what are those ? really all ? not just ...

*February 1, 2014 by Joy*

**physics**

Hi, my teacher doesn't teach us too well and we have a few packets to hand in for tomorrow that I really don't understand much of. If someone could give me the answers to all of the problems on the first link if you search "the electrical energy converted to thermal energy in ...

*May 13, 2012 by David*

**Algebra II-Please help!!**

Please help-I'm really mixed up How do I find the permutations of the first 12 letters taken 3 at a time? I have a ton of these to do and really don't understand them at all-

*April 4, 2011 by Anna*

**Physics**

Please help!!! Physics test!? I have a physics test tomorrow on projectile motion, and I don't feel ready for it. I'm having trouble in the class and I need to ace this test. The problem is I get confused when I get a problem. I don't know how to proceed. After I read the ...

*October 9, 2012 by Mike*

**english**

kindly please correct my english grammar if it is correct or mistake. how to use the word all. 1.all girls are beautiful. 2.all of them is really has a kind heart. 3.all peaple is good.

*December 20, 2011 by jessie*

**Physics (Final Review)**

Ok so tomorrow is my Physics final and I have so much depending on this one test ( all my other grades are 80 and above but this one is a low 70). I have studied for the final but if anyone could supply me with a list of most know formulas for physics I would really appreciate...

*December 13, 2010 by Pablo*

**maths**

for tan2x=3 i get should get two values 71.56 and 251.56 but i dnt knw how to solve to get this two values. pls help me with this. thanx in advance.

*September 19, 2010 by nick*

**Chemistry (really need quick help)**

Balance the following equations. (Use the lowest possible coefficients. These may be zero.) (a) As(s) + ClO3-(aq) ---> H3AsO3(aq) + HClO(aq) (acidic solution) I am using half-reactions but I don't really get this at all. Can someone explain?

*May 5, 2011 by Samantha*

**science**

Please Help me!!!!!!!! i dnt have my science book but there is a question that im stuk on pleaz help!!! Explain why we can only see a full moon only at nite.

*April 28, 2009 by erika*

**social studies**

i have another question that i dnt understand. its say::::: explain why german, viking and magyar tribes contributed to the fall of the roman empire... nd the second question is why was feudalism adapted in europe in the middle ages????

*September 14, 2011 by katherine*

**Physics**

Cn u plz gv explaination 2 d solutions bit by bit in brief? Cz i really dnt understand hw 2 apply d formula 2 solve it when i revise nw.Thnkz. [g=10 m/s^2 ]a particle P of mass m kg on a rough horizontal table. The coefficient of friction between P & the table is 1 /4. The ...

*September 29, 2008 by Ling*

**calculus**

i really need some help, i really appreciate all yalls help. Consider the function F(x)=2x^2-5x+5/x-2 Domain Vertical,horizontal,or slant asymptotes x-intercept(s) y-itercept(s) symmetry(respect to x, y-axis or orgin) F’ (x) Critical numbers F” (x) Possible points of ...

*December 6, 2009 by marlyn*

**Discrete Math**

Use mathematical induction to prove the truth of each of the following assertions for all n ≥1. n³ + 5n is divisible by 6 I really do not understand this to much. This is what I have so far: n = 1, 1³ - 5(1) = 6, which is divisible by 6 Then I really don't know how to ...

*March 21, 2011 by Francesca*

**Physics**

Cn u plz gv explaination 2 d solutions steps by steps briefly? Cz i really dnt understand hw 2 apply d formula wen i revise it nw. [g=10 ms^-2 ] Two particles P & Q, of masses 0.2 kg & m kg respectively, are attached to the ends of a light inextensible string. The particle P ...

*September 29, 2008 by LingSpirit*

**College**

Does Harvard University have art & creative writing classes cause I want to become a artist & a creative writer (when writing books, short stories, novels, & poems). I'm just asking. I look on the website but it really confusd me. Please also what is REALLY Harvard Uninersity...

*September 30, 2011 by Kim*

**chemistry**

I have tried virtually everything, i can't fogure out this problem. I have 2K^+ + SO4^2- + Ca^2+ + 2I^- --> CaSO4(s) + 2K^+ + 2I^-. but it is incorrect and i dnt see how, can u help me? Write balanced complete ionic equation for K2SO4 (aq) + CaI2 (aq)CaSO4 (s) + KI(aq)?

*October 4, 2010 by Amy*

**Algebra II**

Hey all. I'm trying to solve this question, but don't really understand how to do it: If (x^4)^5 = x^a for all values of 'x', what is the value of 'a'? Any help is much appreciated, thanks!

*September 29, 2015 by Anonymous*

**English literarure(a streetcar named desire)**

infact my problem is that i dnt know how to start answering this empathy question.Can you please help me??th question is thet; Imagine you are stanley.write your opinion about Blanche (scene 1).please help me.

*January 26, 2008 by pallaa*

**Math**

I need to express the following in equivalent form: m-2/m^2-5m+6 , 2x+6/x^2-6x-27 , a^2+a/a^2+2a+1 , 2w+1/2w^2+2w+1 , 8Z+6Z^2/9z^2-16 I really don't understand how I can do this if the denominator is smaller and I just don't see how I can simplify since I think that's what it'...

*September 25, 2008 by Sally*

**Physics 102**

THIS IS A QUESTION IN MY PHYSICS BOOK & I REALLY REALLY NEED HELP. I AM 48YRS OF AGE JUST DECIDED TO GO BACK TO SCHOOL AND HONESTLY KNOW NOTHING ABOUT PHYSICS. Two facts: A freely falling object at Earth’s surface drops vertically 5 m in 1 s. Earth’s curvature “drops...

*September 25, 2013 by Miss Angie*

**7th grade math**

i was trying to work out the problem (1.00-x)50/15x. (x=.40g this is the answer) when i work it out i get 50-50x/15x but i dnt understand how this equals .40?? help plse

*October 24, 2008 by sara*

**math**

how do u divide fractions? i really need help with this. i need to know all the steps. plese post the steps.i really need them before 9 oclock tonight. please help. thank u very much...

*March 25, 2009 by elenny*

**stoiciometry (chemistry)**

calculate the theoretical yield of Cu when 53.2g Cu2S react with oxygen. (balanced equation is CU2S+02>2Cu+S02) Please help me figure this homework out. I just dnt get how to get the theoretical yeild. I want to know to be able to do the rest right. Thanks much!

*April 15, 2013 by lila*

**Math - please elaborate**

can someone please further explain my question on? it's just a farther bit down. The subject is "Math - help really needed" I think I almost got the answer, but I'm not sure where to go from there. really appreaite all the help so far as well; thank you. :)

*December 2, 2008 by Rani*

**Ksp/Ka Questions-Chem**

I really don't understand how to set this up. Any help is really appreciated! I really don't quite understand how to set up a caluculation to figure out whether a precipitate will form and i'm struggling with the second half too! When 25.75 mL of 0.00826 M lead II nitrate is ...

*April 8, 2008 by Sigurd*

**PHYSICS (PLEASE READ)**

I tried all the formulas i know but i cannot answer it I really need your help in this question.. A projectile was launched 64° above the horizontal, attaining a height of 10 m. What is the projectile's initial speed?

*November 24, 2011 by kike paul*

**Physics, error derivation**

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...

*March 8, 2011 by trace*

**physics**

may be this is simple and obvious question but i am really not getting this.in my physics practicals i was doing potentiometer experiment ,in this i did not understand how jockey completes the circuit.i mean we did not do any connections we were just touching wires with this ...

*October 8, 2014 by zoha*

**Math - I really need help, please.**

A town has a population of 8400 i 1990. Fifteen years later, it's population grew to 12500. Determine the average annual growth rate of this town's population. I really don't understand this problem. I've been going at it for hours and all I've come to is that the equation ...

*November 2, 2008 by Lacey*

**english**

In the springtime ,the mosquitoes.really annoy,really aggreate, really irritate

*January 30, 2012 by Marline*

**Jishka homework help**

ok so this isnt really a homework question but when you make an account on Jishka, not a premium one, but just a regular free one, whats the point? Because all you can do is edit your "profile" which is 3 questions. What really is the purpose of it?

*October 28, 2008 by mysterychicken*

**physics, error calculation repost**

I need to derive an error equation for Bohr's model to use in my physics lab this week. I am really bad at calculus, so if anyone can help me that would be really great. the equation is (1/lambda)=R[(1/n^2final)-(1/n^2initial)] I've never had to derive anything like this ...

*March 8, 2011 by Trace*

**U.S.History**

how did the issue of Gold, Glory, and God influence the economic gain and glory for all individuals involved.[involved in the colonizing activities of Spain and England] i really, really need help with this..i have been trying to find the answer for this for a few days. thanks...

*January 28, 2009 by y912f*

**Language Arts**

23. Respond in a paragraph. Answer is written in complete sentences. Compare the poems by Szymborska and Milosz read over the course of this unit. All are important twentieth century writers addressing a similar theme: death. Which poet addresses it in terms of the times he ...

*December 6, 2016 by Keziah*

**U.S History**

Forming the united States, what were the two plans that arose at the Convention and who were the people responsible for each plan? Just a minute! Have you asked us all your questions? What have YOU done to find the answers? We HELP but we don't DO the work for you! Yes. I'm ...

*January 22, 2007 by COOL*

**Taking Time to Thank**

I want to thank all the homework helpers who have helped me in the past. Ms. Sue Steve Writeacher Jai I really appreciate all of you guyz helping me out, you improved my grades and i thank you because of that :)

*October 7, 2013 by Mary Ann*

**mathematics**

evng .my teacher gave me this as a homework but i dnt undertand. 1.In a GP the 3rd term is equal to four times the first term and the sixth term is equal to three times the fourth term plus 32. Determine the sequence.

*May 3, 2016 by patricia*

**language**

i fixed it as you said, what do you think about my tercet now? The Wild Dog I saw a dog Who walked in the fog He couldn’t see and got stuck in a log. He jumps up high And pretends he can fly Like a super hero in the sky. He’s really really fat He sits on a mat All day, ...

*April 15, 2009 by john*

**Math**

Consider the matrices P = 3 1 1 3 and S = 4 2 2 4 Calculate P^n and S^n for different values of n and describe any patterns you observe. I cannot find any patterns at all. I would really appreciate any help at all. Thanks!

*December 16, 2007 by Cassandra*

**Math**

Mathmate, I really appreciate all your help regarding my composite function question below but I'm still in need of your help. I don't understand how the range of x^2-x+1 is R. Isn't this a parabola with a minimum for y? Also, I understand minimum and maximum values of sine ...

*September 25, 2010 by Sarah*

**Physics**

i really dnt understand wen i revise it nw so cn u xplain the solutions 2 me. Thnks.[take g=10 ms^-2] Two particles P & Q, of equal mass m, are attached to the ends of a light inextensible string. The string passes through a small smooth hole at the vertex of a cone fixed with...

*September 29, 2008 by LingWarm*

**geometry**

ughh i need help i dnt like proofs we'll here it the instructions write a two column proof the segment addition postulate is useful for this proof also. remember that the transitive && substitution properties are common in proofs this one requires substitution.. given is rs=xy...

*September 24, 2009 by samm*

**trig**

It's in sigma notation, so I'm not sure how to type it. I'll just use E lol. Find each sum. 6 E (n+1)/(n+2) n=1 Is this a geometric or arithmetic series? That is pretty much all I really need to know. I appreciate all the help you guys give.

*June 16, 2009 by matt*

**Algebra 2 Could use help asap**

I really am trying to work these problems out on my own. Please help If f(x)=3x^2 g(x)= 1/6+x find the following and give the domain (f+g) (x) (3x^2) + (1/6+x) x is all real numbers and x is not equal to 6 (f-g) (x) (3x^2) - (1/6+x) 3x^2-x-6 x is all real numbers and x is not ...

*February 1, 2011 by Sam*

**Physics**

A cannonball is fired horizontally from a 240 -high cliff toward a vertical building 540 away with an initial velocity of 90.0 . When the ball will hit the building? A) 7.00 s B) 6.00 s C) less than 6.00 s D) more than 7.00 s If it's fired horizontally, then all of the ...

*September 10, 2006 by JC*

**Precalculus**

Hello, Thanks for all of the help guys. I really appreciate it. I was woudnering if you could show me how to do this step by step and the thought process that goes through your head while you do this. This way I will be able to try to solve some of these problems on my own ...

*January 5, 2010 by Kate*

**Algebra-I really need help, please?**

I have to solve sqrt(2x-7) >=5 answers would be x>=16 x>=7/2 7/2<=x<=16 x<=16 I don't get this concept at all and I have 20 of these kinds of problems for homeowrk-can someone direct me how to start or give me an example or just help please? I really need to ...

*January 8, 2011 by Sarah*

**Business Communications**

Which of the following would be classified as an informative or possitive message? A. A request for information B. An announcement of a policy that reduces benefits C. A memo for the file recording actions and rationales D. A letter to an employer announcing you have accepted ...

*August 14, 2010 by Rain Misoa*

**HELP PLEASE**

I'm really, really, really, sorry but I seriously need help. I can't find a TIMELINE of George Vancouver's special journeys and events. PLEASE HELP ME!!! IT WILL MEAN SO MUCH TO ME!

*October 14, 2007 by Lily*

**Physics**

I have to compare and contrast three types of tires, and relate them to physics. I've chosen: <li> Racing tires <li> Winter tires <li> All season tires I've chosen to compare them on: <li> Tire tread pattern <li> Rubber compound <li> ??? As ...

*March 1, 2008 by Lucy*

**fluid mechanics**

I have got differential pressure from an inclined manometer to be 2.8kPa and density of the fluid is 784kg/m^3. I need to calculate the manometer datum height. how do i do tht?? i already did it using formula pressure=density*g*h but i want ans to be 0.165 meters which i dnt ...

*May 30, 2010 by Nick*

**fluid mechanics**

I have got differential pressure from an inclined manometer to be 2.8kPa and density of the fluid is 784kg/m^3. I need to calculate the manometer datum height. how do i do tht?? i already did it using formula pressure=density*g*h but i want ans to be 0.165 meters which i dnt ...

*May 31, 2010 by Nir*

**fluid mechanics**

I have got differential pressure from an inclined manometer to be 2.8kPa and density of the fluid is 784kg/m^3. I need to calculate the manometer datum height. how do i do tht?? i already did it using formula pressure=density*g*h but i want ans to be 0.165 meters which i dnt ...

*June 1, 2010 by chika*

**english!**

I have to compare 2 of my short stories AND write an essay and the teaacher has given me the topics to work on. 1)the use of symbols to Convery central meaning 2)The use of settings to Convey central meanings i dnt understand what they're asking. and also what is "to CONVEY ...

*July 21, 2010 by thara*

**11th grade physics**

my physics teacher asked the class to find a cool physics topic and write a summary and a reflection on it 1page.... any ideas im really stuck

*October 5, 2008 by JESSICA!!!!!!!!!!!!!!!!!*

**CHEMISTRY**

PLEASE HELP I REALLY DO NOT UNDERSTAND THIS YOU DON'T REALLY HAVE TO ANSWER THE QUESTIONS BUT AT LEAST JSUT A LITTLE HINT THATS ALL PLEASE AND I HAVE A QUIZ ON THIS TOMORROW MY TEACHER REALLY CANNOT TEACH 1) what flaws exsit in Dalton's model of the atom? 2) what flaws exist ...

*November 14, 2007 by Anonymous*

**Physics I for College**

a rope that makes an angle of 30 degrees with the horizontal drags a crate along the floor. what must be the tension in the rope if a horizontal force of 40N is needed to drag the crate? please help me. i really didn't understand what my professor told me. he speak so fast. ...

*June 23, 2014 by Ian*

**career aw**

Can someone plz get a website all about photography for me I really need it for a project that is due tomorrow that my teacher assigned but i need a little bit more about what their daily tasks are?!?!?!?!?!?!? I REALLY NEED HELP!!!!! PLZ SOMEONE!!! THANXS

*September 25, 2007 by Stacy*

**i really, really, really need help**

what coordinate point is the solution to the system? {3x+2y=8 {x-y=1 (2,1) please don't think i just made that up, it's correct. you have to use substitution, when you do solve for x and y, you get: x= y+1 and y=x-1, plug in y for 3x+2y=8 and you get: y=1, then plug in "1" ...

*February 22, 2007 by andrea*

**english**

hay i really really need help!!! im doing a poem project and it invloves explainig what does "no time to turn at beautys glance and watch her feet and how they can dance"means pleasee help me i really need help:)

*June 15, 2011 by priya*

**physics**

I've got a few communication questions... -Why do images appear sharper underwater when wearing a diving mask? -where would you aim a spear in order to hit a fish if you are viewing it from the air?(i know it's straight down, but why?) please answer.. if not all just one.. ...

*June 4, 2009 by Cynthia*

**Science and maybe re**

This isn't really homework, but I thought someone could really help me with this. Did time exist before the Big Bang? I believe in God; if time always existed, why did he make it wait? Looking for a really scientific explanation. Thanks!

*May 23, 2015 by Science*