Monday

April 21, 2014

April 21, 2014

Number of results: 5,702

**Classical Mechanics Physics - Urgent help please**

Yes
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

yes r=L/2
*Saturday, December 7, 2013 at 5:46pm by bw*

**Classical Mechanics Physics - Urgent help please**

what is f_x?
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

i check it r=L/2
*Saturday, December 7, 2013 at 5:46pm by Greco*

**Classical Mechanics Physics - Urgent help please**

has anyone found F_x?
*Saturday, December 7, 2013 at 5:46pm by bw*

**Classical Mechanics Physics - Urgent help please**

how to calculate alpha ?
*Saturday, December 7, 2013 at 5:46pm by shashanoid *

**Classical Mechanics Physics - Urgent help please**

why is Fx negative?
*Saturday, December 7, 2013 at 5:46pm by da*

**Classical Mechanics Physics - Urgent help please**

tehta alpha=?
*Saturday, December 7, 2013 at 5:46pm by socorro*

**Classical Mechanics Physics - Urgent help please**

bw did u find f_y?
*Saturday, December 7, 2013 at 5:46pm by Phy*

**Classical Mechanics Physics - Urgent help please**

What is "r" in the Fy equation? Would it be (L/2)?
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

@bw: How did you get alpha from omega in a) ??
*Saturday, December 7, 2013 at 5:46pm by so*

**Classical Mechanics Physics - Urgent help please**

v=113.14 a=0.90
*Saturday, December 7, 2013 at 5:46pm by Greco*

**URENT HELP URGENT HELP URGENT HELP URGENT HELP URGENT HELP URGENT HELP URGENT HELP IN MAHT!!!**

Find the number of (m) ways in which 6 people can ride a toboggan if ONE OUT OF THREE people must drive. M=? PLEASE DO NOT SOLVE! Just tell me how to do the problem. You MIGHT use factorial.
*Wednesday, April 9, 2014 at 5:51pm by dddd47906 *

**Classical Mechanics Physics - Urgent help please**

Thankyou very much !! How did you do parts b and c?
*Saturday, December 7, 2013 at 5:46pm by Briggs*

**Classical Mechanics Physics - Urgent help please**

@ fima how do you find the torque at the bottom
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

bw Fy=m*g*cos(theta)-m*w^2*r what's r???
*Saturday, December 7, 2013 at 5:46pm by Greco*

**Classical Mechanics Physics - Urgent help please**

Thanks to everyone that contributed to this, now i can rest :)
*Saturday, December 7, 2013 at 5:46pm by vivipop*

**Classical Mechanics Physics - Urgent help please**

@fima Did your conservation of E method worked for part a ?
*Saturday, December 7, 2013 at 5:46pm by C_P*

**Classical Mechanics Physics - Urgent help please**

hey damon, could you solve the full question?
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

Thank you bw Now I'm tired need to sleep.
*Saturday, December 7, 2013 at 5:46pm by da*

**Classical Mechanics Physics - Urgent help please**

much honor such code wow
*Saturday, December 7, 2013 at 5:46pm by lolol*

**Classical Mechanics Physics - Urgent help please**

for part (c) can theta be found out by equating fx = 0?
*Saturday, December 7, 2013 at 5:46pm by Straton*

**Classical Mechanics Physics - Urgent help please**

i also tried using I=I_CM+(m*l^2)/4,still my answers were not correct.
*Saturday, December 7, 2013 at 5:46pm by vivipop*

**Classical Mechanics Physics - Urgent help please**

I got c) part, the angle is 48.18 for all values
*Saturday, December 7, 2013 at 5:46pm by Phy*

**Classical Mechanics Physics - Urgent help please**

To vivipop: You are missing the sin of angle (theta) in your torque eq. I_CM is (1/3)*M*l*l
*Saturday, December 7, 2013 at 5:46pm by Mum*

**Classical Mechanics Physics - Urgent help please**

hai #Greco i really appreciate for this rocket question ! i mean it ! thx !
*Saturday, December 7, 2013 at 5:46pm by kumar*

**Classical Mechanics Physics - Urgent help please**

I want to do it by myself (and don't even understand the above) , can someone point me at the right chapter/lecture?
*Saturday, December 7, 2013 at 5:46pm by an0nym801*

**Classical Mechanics Physics - Urgent help please**

can i have the formula atleast? I just need one more percent to earn the certificate , thank you
*Saturday, December 7, 2013 at 5:46pm by KS*

**Classical Mechanics Physics - Urgent help please**

Didn't get the solution for b) and c) of 1st problem, please help me
*Saturday, December 7, 2013 at 5:46pm by Phy*

**Classical Mechanics Physics - Urgent help please**

Can someone please tell me the solution for b) part?
*Saturday, December 7, 2013 at 5:46pm by Phy*

**Classical Mechanics Physics - Urgent help please**

@Damon, could you please explain how you found your linear KE?
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**Classical Mechanics Physics - Urgent help please**

I wrote for mass=200gr L=15cm, and I'm sure about those values, because I got Fx, but I'm having problems with Fy
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

BW please tell me solution for the 1st problem, my beta is 0.8 and mass is 3kg
*Saturday, December 7, 2013 at 5:46pm by Phy*

**Classical Mechanics Physics - Urgent help please**

Hi Damon how did you find x=distance out from cg=0.05sinT? I have different numbers in my problem and I did not understand how to find x. Thanks
*Saturday, December 7, 2013 at 5:46pm by ROMA*

**Classical Mechanics Physics - Urgent help please**

Please tell f_x and f_y for m=150g and l=20 and theta=30 please help !!
*Saturday, December 7, 2013 at 5:46pm by shashanoid *

**Classical Mechanics Physics - Urgent help please**

hai anonymous hw @fima got alpha =50 i used his value and got 40 hint plz!
*Saturday, December 7, 2013 at 5:46pm by kumar*

**Mechanics....Urgent!!**

Find the magnitude and direction of the equilibrant of two forces, one being horizontal pull of 18 N and the other a pull of 23 N at 50 degrees to the 12 N force.
*Wednesday, January 16, 2013 at 8:44pm by joe*

**Classical Mechanics Physics - Urgent help please**

the equation is Ok, and the w value got green checked. So YES, I'm sure about A. But anyone knows how to do B and C. And please, try to post the procedure, because we all have different data.
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

@KEITANAKO, following your suggestions, I replaced in the torq. eq and got Fy=0.76, though if snyone can confirm that value for MASS=200gr and L=15cm, because I don't waste my last chance
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

ERROR I used: ay= -L/2*cos T w^2 - L/2 cos T alpha, though I'm thinking there might be an error with the signs
*Saturday, December 7, 2013 at 5:46pm by fima*

**science**

Classical mechanics Relativity Thermodynamics Electromagnetism/Optics Quantum mechanics
*Wednesday, August 29, 2007 at 8:17pm by ~christina~*

**mechanics/motion**

Can someone help me with mechanics. I need to check my answers
*Friday, January 31, 2014 at 12:20pm by Anonymous*

**urgent urgent urgent**

nor do I understand the question. Chemical makeup: proteins, containing C, H, O, N, a few S, and some P.
*Friday, February 8, 2013 at 9:26pm by bobpursley*

**Urgent Art questions**

That's why I put urgent, but I can take Urgent out of my next ones tomorrow ^.^
*Tuesday, September 10, 2013 at 6:28pm by Gabby*

**Classical Mechanics Physics - Urgent help please**

@fima hw u got alpha i use your value and i got alpha=40 ! how u got 50??
*Saturday, December 7, 2013 at 5:46pm by kumar*

**Classical Mechanics Physics - Urgent help please**

I do not see any parts b and c. You only typed part a. I do not have your text or problem sheet or whatever :) for linear Ke we need (1/2) m v^2 but v = vx i + vy j so magnitude of v is sqrt (vx^2+vy^2)
*Saturday, December 7, 2013 at 5:46pm by Damon*

**Classical Mechanics Physics - Urgent help please**

@Kumar Trying to "massage" alpha equation, I've got: 3*g*sin(theta)/(2*l) Wich that for fima values, got alpha = 50, as she said. Try to evaluate it again.
*Saturday, December 7, 2013 at 5:46pm by Anoninho*

**Classical Mechanics Physics - Urgent help please**

@fima: how do you get alpha? if i take your values i do not get alpha=50 Probably 0.76 is wrong.. I have a different equation for Fy but I'm not yet sure if it is correct, but it worked for my values..
*Saturday, December 7, 2013 at 5:46pm by bw*

**URGENT LANGUAGE ARTS**

PLEASE THIS IS URGENT VERY URGENT BUT I NEED HELP
*Monday, December 17, 2012 at 9:00pm by Gabby*

**urgent urgent urgent**

what is the chemical make up of actin and myocin
*Friday, February 8, 2013 at 9:26pm by zachary*

**Classical Mechanics Physics - Urgent help please**

to solve the geometrical equations, I need alpha, can I calculate alpha like this: torque at bottom: mgl/2*sin(theta)=Ic*alpha, Ic=1/3*3*l^2, though should I add a "-"???
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

apply conservation of energy: U=m*g*hcm EK= 1/2*I*w^2, I=1/3*m*L^2 Eini= mg(L/2) + 0 Efin= mg(L/2)cos30 + 1/2*I*w^2 solve for Eini=Efin -> w= any one knows how to answer the other questions?
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

apply conservation of energy: U=m*g*hcm EK= 1/2*I*w^2, I=1/3*m*L^2 Eini= mg(L/2) + 0 Efin= mg(L/2)cos30 + 1/2*I*w^2 solve for Eini=Efin -> w= any one knows how to answer the other questions?
*Saturday, December 7, 2013 at 5:46pm by fima*

**Classical Mechanics Physics - Urgent help please**

hey Mum, i did as u said but i got only the angular velocity,others are wrong. this is how i got my alpha: Torque=m*g*(l/2)=I_CM*alpha. ie taking torque from origin. am i correct? if yes then what might be the problem.
*Saturday, December 7, 2013 at 5:46pm by vivipop*

**mechanics**

I disagree that it has anything to do with mechanics.
*Monday, December 9, 2013 at 4:26am by Steve*

**Physics**

If the electron in a hydrogen atom obeyed classical mechanics instead of quantum mechanics, would it emit a continuous spectrum or a line spectrum?
*Thursday, April 10, 2008 at 8:59pm by Kara*

**math**

At the Whistlestop Cafe, 15 of the 19 patrons are mechanics. If a sample of 8 is taken, what is the probability that exactly 5 patrons are mechanics? Round your answer to 4 decimal places.
*Thursday, June 3, 2010 at 4:51pm by Anya*

**math**

At the Whistlestop Cafe, 15 of the 19 patrons are mechanics. If a sample of 8 is taken, what is the probability that exactly 5 patrons are mechanics? Round your answer to 4 decimal places.
*Thursday, June 3, 2010 at 5:45pm by Anya*

**Classical Mechanics Physics - Urgent help please**

After finding f_x, use that value in the equation Torque=I_cm *alpha equation (containing F_y and F_x), i think you don't need to find a_y. May I ask how to apply to the equation, please?
*Saturday, December 7, 2013 at 5:46pm by keitanako*

**math urgent urgent urgent**

perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is
*Friday, November 30, 2012 at 11:56pm by zach w*

**Classical Mechanics Physics - Urgent help please**

You used moment of inertia about center of the ruler. But in your calcs you assume that it is rotating about its end. Shouldn't you use instead moment of inertia bout the end, when calculating KE of rotation?
*Saturday, December 7, 2013 at 5:46pm by Damon*

**Classical Mechanics Physics - Urgent help please**

@Damon You used moment of inertia about center of the ruler. But in your calcs you assume that it is rotating about its end. Shouldn't you use instead moment of inertia bout the end, when calculating KE of rotation?
*Saturday, December 7, 2013 at 5:46pm by C_P*

**Classical Mechanics Physics - Urgent help please**

i tought that if there is no friction the F_y component would be zero, but it's wrong. Also for the angle I just set the a_x equation equals to zero and find the arctg between two parameters already found on the exercise. I get 61.81° and its also wrong.
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**math urgent urgent urgent**

(12,0) and (0,6) center at (-2,2) radius 3 domain all reals, range all reals >= -9 (-2,-25)
*Saturday, December 1, 2012 at 12:37am by Steve*

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through
*Wednesday, February 6, 2013 at 9:11pm by zachary*

**Classical Mechanics Physics - Urgent help please**

hello Damon, i really appreciate that you are sharing your knowledge with us here. please can you solve for part b and c. I followed your procedure. I got my alpha by taking torque at the Origin both using I=I_CM and I=I_CM+I_P. They were all wrong. please do solve for F_x and...
*Saturday, December 7, 2013 at 5:46pm by vivipop*

**English**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Thursday, May 7, 2009 at 1:00pm by john browm*

**critical thinking**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Friday, January 16, 2009 at 11:01am by Anonymous*

**CRT205 Quiz**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Friday, February 27, 2009 at 1:45pm by randy*

**Critical Thinking**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Saturday, June 6, 2009 at 12:15pm by mary*

**Critical Thinking**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Friday, July 31, 2009 at 2:20am by bere*

**Physics**

Did Einstein support quantum mechanics as being fundamental physics, or did he think quantum mechanics was inconclusive?
*Thursday, April 10, 2008 at 11:58pm by Tammy*

**math urgent urgent urgent**

1)let f(x) be a polynomial function explian how to use the factor theorem to check if (x-c) is a factor of F(x) 2) use synthetic division to factor X^2-2x^2-9x+18 completly
*Friday, November 30, 2012 at 9:30pm by zach w*

**Mechanics....Urgent!!**

Let the 18N force be at direction 000, and the 23N force be at direction 050. Hmm. Where is the 12 N force. Something here is wrong. Anyway, add the two forces. Then take the negative of them. My preference is to break the forces into components 90 deg apart, then add using ...
*Wednesday, January 16, 2013 at 8:44pm by bobpursley*

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred in ...
*Thursday, February 7, 2013 at 11:42am by zachary*

**Calculus **

Use newtons method and the function f(x)=x^2-a to derive the mechanics rule. Mechanics Rule for approaching sqrt(a), a>0, is Xn+1=1/2(Xn+a/Xn), n=1,2,3,...
*Friday, July 20, 2012 at 10:56pm by Elizabeth*

**Classical Mechanics Physics - Urgent help please**

PLZ WHERE IS PARATHESE I DONT'SEE THIS CLEAR alpha=3*mg/2*sin(theta)/L ax = -L/2*sin(theta) w^2 + L/2*cos(theta) alpha Fx=m*ax Fy=m*g*cos(theta)-m*w^2*r
*Saturday, December 7, 2013 at 5:46pm by kumar*

**oops--urgent urgent urgent**

know, not now
*Friday, February 8, 2013 at 9:26pm by DrBob222*

**english: crit. thinking**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Wednesday, March 19, 2008 at 10:37pm by rose*

**Classical Mechanics Physics - Urgent help please**

@da: take absolute value b) alpha=3*mg/2*sin(theta)/L ax = -L/2*sin(theta) w^2 + L/2*cos(theta) alpha Fx=m*|ax| Fy=m*g*cos(theta)-m*w^2*L/2
*Saturday, December 7, 2013 at 5:46pm by bw*

**math urgent urgent urgent**

-2x+y=7 can be written as y=2x+7, so we see it has slope=2 so, the perpendicular has slope -1/2 now you have a point and a slope: y+2 = -1/2 (x+4) and you can massage that as you will.
*Friday, November 30, 2012 at 11:56pm by Steve*

**Classical Mechanics Physics - Urgent help please**

greco can you please solve for my rocket question Consider a rocket in space that ejects burned fuel at a speed of vex= 1.5 km/s with respect to the rocket. The rocket burns 9 % of its mass in 310 s (assume the burn rate is constant). (a) What is the speed v of the rocket ...
*Saturday, December 7, 2013 at 5:46pm by KS*

**math urgent urgent urgent**

6x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21
*Friday, November 30, 2012 at 11:56pm by zach w*

**math urgent urgent urgent**

x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21
*Saturday, December 1, 2012 at 12:37am by zach w*

**Classical Mechanics Physics - Urgent help please**

@Fima After finding f_x, use that value in the equation Torque=I_cm *alpha equation (containing F_y and F_x), i think you don't need to find a_y. Also check ur equation for a_y, both are Cos(theta),i think the second one will be sin (theta)
*Saturday, December 7, 2013 at 5:46pm by Anonymous*

**English language**

what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant almost ...
*Tuesday, November 29, 2011 at 2:32pm by Caroline*

**CHEM URGENT**

It's calculable using the Bohr atomic model or quantum mechanics, but you might as well look it up or use the fact that it is 13.6 eV per atom. Multiply that by the number of atoms in a mole (6.02*10^23) and the number of Joules in an eV (1.602*10^-19). You get 1.312*10^6 J/...
*Saturday, January 17, 2009 at 1:26am by drwls*

**Physics Classical Mechanics**

Pr/3 cw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/momentum/momentum-and-impulse/MIT8_01SC_problems16_soln.pdf
*Monday, October 28, 2013 at 6:09am by Elena*

**algebra 1...urgent**

If your question is so urgent, what have you done to try to solve these problems?
*Wednesday, March 5, 2008 at 9:24pm by Ms. Sue*

**Precalculus(URGENT)**

Sorry, I only do the non-URGENT ones
*Thursday, March 11, 2010 at 4:38pm by drwls*

**book report**

im doing a book report in the 5th grade...and it said i have to give a summary, title,ect....and then it says slogan and mechanics..i dont know what slogan and mechanics mean....please help and give me a site to know what it means or tell me...thanks!!
*Monday, September 8, 2008 at 2:58pm by sheila*

**Venn Diagram (URGENT)**

What are 6 similarities between Canada and Haiti? 1. French Influence 2. 3. 4. 5. 6. Please someone help, this is urgent. thank you.
*Thursday, April 30, 2009 at 12:56am by John*

**Math *URGENT**

Wow, classic case of urgent "homework dumping" I will be very happy to check your answers.
*Thursday, December 20, 2012 at 9:37pm by Reiny*

**URGENT LANGUAGE ARTS URGENT~!**

The website also says the hyphen is unnecessary when it follows the modified word.
*Friday, April 12, 2013 at 10:09pm by Ms. Sue*

**ENGLISH**

Over time, non-specialists are usually able to assimilate radically new scientific ideas, even though these ideas may seem strange when they are initially introduced. Such was the case with Newtonian physics; when Newton proposed his ideas regarding motion and gravitation in ...
*Thursday, May 7, 2009 at 4:37pm by john doe*

**Math urgent**

explain how to compute the xy term of the product (3x-4y)^2? if possible with solution please.... its urgent
*Sunday, September 7, 2008 at 5:01pm by Ayushma*

**science-urgent**

What are differences between Continental Drifts and Plate Tectonics? I need at last 4 for each. Please help its urgent!!!!! Thanks a bunch! Ellie
*Monday, November 24, 2008 at 8:58am by Ellie*

**egypt**

urgent!!!!urgent!!!!!! have to go to bruins game at 5:45whats the magical fiqures inbetween the rapping in a mummy?
*Thursday, January 29, 2009 at 5:06pm by lilgeeny245*

**chemistry urgent urgent**

Why are you having trouble with this? What is it you don't understand?
*Monday, December 10, 2012 at 9:00pm by DrBob222*

**Urgent language arts**

It's urgent i got 5 min.
*Monday, December 17, 2012 at 11:48pm by Gabby*

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