April 20, 2014

Search: its physics.. i just want the formula

Number of results: 143,976

this is just one of the things I just don't get. this time Im plugging in numbers I think are going to help me solve the problem 1330kg(9.8)=13034N I changed it to newtons I just thought thats what I was suppose to do
Wednesday, April 16, 2008 at 2:37pm by Anonymous

School just started a couple of days ago and we just got our first assignment in my physics 11 class we have to find the displacement ... but i have no idea how
Thursday, September 10, 2009 at 8:36pm by Racheal

College Physics
ok, well I would have some thought process if I had any idea how to do any of these! I am not asking for just the answer I am asking for some guidance on where to start just a little hint! physics is by far not one of my strong points.
Monday, January 21, 2008 at 12:22pm by Jen

hey wow thanks!!! I acutally understood just kind of werid because our book hasn't mentioned energy yet but I know about it from just regualr old physics I'm taking ap this year and doing the first chapters in order and it hasn't mentioned anything about energy yet just told ...
Tuesday, August 11, 2009 at 10:35am by physics

just answer it, it takes ppl usually about ten min to do i just dont get ti at all. thisis my first time on this site..pls do a favor just this time thx
Thursday, March 7, 2013 at 4:29pm by red

Hey, that is the same as the one I just did for you, just different numbers.
Sunday, September 9, 2012 at 6:43pm by Damon

AP physics
That just confused me more cause it's just asking for Velocity and we haven't talked anything about w or i
Tuesday, October 18, 2011 at 9:16pm by James

Physics, help with a similar problem I just posted
I just answered the other one, same deal
Wednesday, October 19, 2011 at 4:07pm by Damon

Yeah you just use F=qE, so you just multiply E by e
Wednesday, February 24, 2010 at 2:17pm by Guest58

I was just wondering if you just square v and also what do you put in for x?
Wednesday, March 7, 2012 at 12:33am by Anonymous

The masses usually cancel out of equations, so I'm just guessing that that's what happens here. I just don't know how to start it.
Tuesday, November 1, 2011 at 4:51pm by Ashley

just multiply exponents when raising an expression to a power: (5x^-3)^2 = 5^2 (x^-3)^2 = 25 x^(-3*2) = 25x^-6 recall that (x^-3)^2 is just x^-3 * x^-3 = x^(-3 + -3) = x^-6
Wednesday, September 5, 2012 at 4:06pm by Steve

Just an explanation without numbers would be awesome, i just want to understand the correct steps to take. Thanks!
Wednesday, October 3, 2012 at 1:01am by Drew

uh, no. They're not "dumb". You're just mad that they called you out on cheating,which you like to call "asking for help"(help that you could just get from asking your teacher).
Friday, June 10, 2011 at 1:30am by heyloser

Physics websites
I just want to ask if there's a website in physics that you don't have to do the experiment on your own and you can just do it in the computer and study it and answer the question to that experiment/lab. I'm really having problems with my experiments and I don't have enough ...
Tuesday, June 11, 2013 at 10:19am by Isis

Is there supposed to be a sqrt(-1) or an x after the 4.4? 6.8 + 4.4 is just 13.2. Is this one-dimensional motion? If so, just integrate -F dx for the potential energy.
Tuesday, March 4, 2008 at 12:48pm by drwls

What is its acceleration just before and just after reaching this point? (Ignore air resistance.) a. less than g b. equal to g c. greater than g
Saturday, September 15, 2012 at 1:36pm by Anita

we just did an experiment on spectral fingerprinting and i was just curious, what if the elemental vapors were mixed in one discharge tube, how can i know what the individual elements are?
Tuesday, February 10, 2009 at 8:07am by eya

Is this a physics homework question or are you just curious? It is interesting to see how an honors class in physics is taught.
Friday, February 20, 2009 at 5:49pm by drwls

NOt rude at all. Just wants to see some effort from the poster. Although, if it's their first time posting they may not know that. The person who posted should just repost saying, "I tried this," or "I'm not sure what this means, but does it have to do with x?" etc. Still, I ...
Wednesday, February 17, 2010 at 6:14pm by James

I think it would just be Fg x m, so 70kg times 9.81 m/s^2, and then multiply all of that by 2.9m, and the negative is just saying what direction the man is falling, meaning downwards
Friday, January 10, 2014 at 12:05am by K

Now, when I'm solving for time, do I not yet know what v/2 is? Like, it would just be "t = v/2 x -9.8?" I'm so sorry...this is just not making any sense to me yet.
Sunday, October 7, 2007 at 5:55pm by Lindsay

The figure shows a 0.3 kg baseball just before and just after it collides with a bat. Just before, the ball has velocity of magnitude 11.4 m/s and angle = 31.4 degrees. Just after, it is traveling directly upward with velocity of magnitude 9.00 m/s. The duration of the ...
Monday, March 25, 2013 at 6:54pm by Alex

Right. I plug in "1/2 x 3.05 x (2.58^2") and come out with 10.15 m. But that's obviously not correct. I know I'm doing something wrong, but I'm just not sure what. I'm sorry...this just isn't making much sense yet.
Monday, October 8, 2007 at 3:35pm by Lindsay

momentum is P=MV P is impulse, which in this case is -9.7kg*m/s V is the change is velocity so (-24.7-5.2) so you just plug all this in the formula -9.7=(-24.7-5.2)m then just solve for "m" !
Tuesday, March 29, 2011 at 7:12pm by Lisa M

so does 10.908 sound right? Also, ( just so I know for future problem) what is x-hat and y-hat (we just started 2d collisions so I am sorry if this is very obvious)
Thursday, December 13, 2007 at 5:54pm by Ty

ok, thanks...i just want few other people to reply to this post...just to be sure i agree with you but int the one "which of the following statements about electromagenetic..." i'm not sure between B and D thanks again
Saturday, March 14, 2009 at 10:57am by physics

Hey just wanna to check this out that I'm pretty studying on Physics and Biology. Process Information is mos definitely I'm succeeding aight and it ain't that hard n'mean? I still all the stuff I gotta need to study. Send me a few ?'s on Process Information and most on Biology...
Wednesday, August 31, 2005 at 2:31pm by Henry C.

just wondering if anybody have any suggestions for a physics project (anything that deals with physics)??? thanks Research the Klien-Fogleman wing and its advantages over conventional wing shapes.
Monday, November 27, 2006 at 8:46pm by mitch

F = GmM/r^2 just like anything else Now, normally we just absorb most of that into weight = g*m where g = MG/r^2 and r is the radius of the earth. If your astronaut is at R = 2r, then his weight is 1/4 normal. At 3r, it's 1/9, etc.
Thursday, January 19, 2012 at 12:18pm by Steve

yes @anonymous u just convert it into sec onds and solve the equation which mac has given . u'll get the right answer ..just dont forget the r^3 and t^2..yes it will give u very large numbers :( even i was obsessed . keep trying
Thursday, October 17, 2013 at 5:51pm by dude

you kind of just droped 1/di there. where did it go? I just dont get how you got to: 1/di - 1/2di and then you went from 1/di - 1/2di = 1/ just droped 1/di. That doesnt make any since.
Saturday, March 17, 2012 at 11:37pm by scott

There is no ramp involved... its just a cart on a flat table, and then a puly, and a load. Would gravity be pulling the load down, which would make the cart move? I still don't get how I would calculate the 'drag' (friction and air resistance) force. Here's my attempt at ...
Saturday, October 6, 2007 at 8:03am by Jenny

Physics: Angular Width. Why is my answer wrong?
Well, that was a step my teacher did so I just followed it. However, .00082 degrees is not the correct answer either (or the variant of 8.2e-4). So I am just totally lost on this one. :/
Friday, November 12, 2010 at 10:36am by Sar

college physics
This site is just a front for liveperson Most college physics questions are not answered for months if ever. Out of "200 experts" you must have somebody who knows physics right? Guess not.
Wednesday, September 30, 2009 at 4:27pm by john

Review the definition of momentum. Then apply it. The change in momentum they are talking about is just before until just after the ball is hit. The initial momentum is zero.
Wednesday, January 16, 2013 at 10:47pm by drwls

Presumably by the time you get to physics you can convert a % to a decimal or a fraction. Just do it. That's the answer!
Wednesday, October 19, 2011 at 10:59am by Steve

I'm guessing it is (D) although I have no background in physics I just like to answer these questions.
Tuesday, February 21, 2012 at 6:50pm by Anonymous

Science, Astrenomey
Just one more thing. Being a creationist does not mean you have to reject scientific theories. Even if God did create the universe, he had to use physical laws to do it. Maybe God is in control of those laws, and maybe not. If he is, he's done a pretty good job of making ...
Thursday, August 23, 2012 at 9:45am by Steve

The first thing you should learn about physics is that you have to provide the dimensions along with the numbers when computing physical quantities. Physics is not just arithmetic. You have not even asked a question! Why are you taking this course?
Thursday, February 2, 2012 at 7:48pm by drwls

the answer is "1" for both questions. i just did it on mastering physics.
Sunday, December 2, 2012 at 3:55pm by Anonymous

It is a smooth wall. I just do not know what equations to use. My mind doesn't think physics. Its too complicated for me. Thank you. I still do not know what to do however.
Saturday, October 23, 2010 at 6:49pm by heather

Physics-just one more time, please
oh, so, the original radius is 1 and you're dividing that by 3? but if you're 'halving' it, would it be 1 divided by 1/2? correct me if I'm wrong, but for problems where I'm just told the distance is tripled, halved, etc, I take one. divide it by 3, 1/2, etc, and the square it?
Tuesday, October 21, 2008 at 9:56pm by Ziyi

m nt good at physics .....i don't understand physics so well .....i try to do the problems but they don't make sense at all i ask it here ...and wen someone helps me ...i understand them and then only write them ......m not cheating .....i just need help to understand ...
Tuesday, May 15, 2012 at 7:37pm by myra

No I havent thought of that. I know physics isnt just getting the answer my problem is figuring out WHAT to analyze on some of these problems.
Wednesday, April 16, 2008 at 2:37pm by Anonymous

A charge of 1nC is added to a spherical soap bubble with a radius of 3.0cm. What is the electric field strength just outside of the bubble? What is the electric field strength just inside of the bubble? The field experienced by each charge in the skin of the bubble is the ...
Friday, October 11, 2013 at 11:48pm by Winter

Flu > ev give you the answer d (just integrate what he wrote) now you have d) you have just to do answer c) = b) + d)
Tuesday, April 9, 2013 at 2:24pm by Supraconductor

Quantum Physics
I discourage cheating, I haven't even given the final exam, I'm just auditing the course. (just to learn) I'm just proving that your ideology and methodology is wrong. You could really mess up the EdX system if you decided to do it your way. You can't see what visitors were ...
Saturday, October 12, 2013 at 10:36pm by Rhunt

I am just confused on the way some of these are written out like in the period equation you just gave, is pi multiplied by v and then divided by g or is the whole quantity given by v/g multiplied by pi?
Friday, December 9, 2011 at 5:13pm by me

for (a) just conserve momentum: (66.5+0.14)*2.09 = 66.5v + 0.14*22.5 v = 2.047 do (b) the same way. just consider the snowball and the skater before and after the collision.
Sunday, November 3, 2013 at 11:17pm by Steve

so far no one is answering our questions. you should try conservation of momentum: m1v1 + m2v2=(m1+m2)vf then just solve for vf, your final velocity...just a suggestion in case you haven't tried it yet.
Monday, December 10, 2012 at 12:31am by cris

Thank you. I just wanted to confirm that this was the right way to do the question. Just another clarification. In the FBD for this question, would the kinetic friction force be in the positive horizontal direction i.e. in the direction the rider was moving before he braked?
Friday, October 16, 2009 at 8:11pm by Nancy

I guess that makes sense. I don't really understand physics and I have been struggling through this class. Can you please just help me out with the question.
Tuesday, April 15, 2008 at 10:54pm by Shay

Also how did you just substitute mg in for the Normal Force. Cause when I solved for the normal force from the vertical components I got: FNcos A + mu*FNsin A = mg FN = mg / (cos A + mu*sin A) And I basically just substituted that into: FNsin A - mu*FNcos A = m*v^2/R I solved ...
Tuesday, October 5, 2010 at 1:43am by Simon

11th grade physics
I took physics last year, and from what I understood there weren't any "cool" physics topics that existed if u get what I mean ;P just kidding but maybe you could talk about the buoyant forces with like boats and stuff like that maybe even with marine animals also that might ...
Sunday, October 5, 2008 at 6:59pm by Emily

Ugh. I just got this as part of a lab question. It makes no sense what-so-ever in context. NEVER TAKE ONLINE PHYSICS IN HIGHSCHOOL!!! Lol.
Saturday, November 6, 2010 at 10:12pm by Jennifer

Ok, so I did INT from .01 to .03 of mu_0*I/r which ended up being mu_0*I*(ln .03-1n .01). I'm confused why you only used .02 as the area. It doesn't give radius of the wire and area of the wire is .02^2. When taking the derivative then, d/dt of I is just dI/dt? so i should ...
Sunday, April 13, 2008 at 11:09am by Manda

vertical is zero. Oh, you must mean it starts falling, not just sliding along horizontally. Well, velocity(vertical): -9.8t position(vertical): -4.9t^2 position(horizontal): 12t now just plug in your numbers for t
Tuesday, September 24, 2013 at 8:25am by Steve

I would just like to sat thanks to drwls for helping me a bunch with the physics questions...AP physics is pretty hard..thanks again, whoever you are.. I am sure i will be back plenty of times!
Monday, September 10, 2007 at 1:01am by Kristen

Just Curious
Hey. I was just wondering if anybody on here has been to teenink. I can't post the website but if you Google teen ink, it takes you to it. It is a very interesting site for teenage writers. I just wanted to let people who might be writers know about it. You can post writing, ...
Saturday, March 3, 2012 at 8:34pm by running.from.myself

A physics book slides off a horizontal table top with a speed of 1.30 m/s . It strikes the floor after a time of 0.380s . Ignore air resistance. Find the height of the table top above the floor. Find the horizontal distance from the edge of the table to the point where the ...
Sunday, February 16, 2014 at 9:11pm by Sean

Assuming the motorcycle acts like a point mass (we don't want him to make it across with just his front wheel!) just drag out your good old equations for a trajectory: for initial velocity v at angle t, the range is r = (v^2 sin 2t)/g 10 = (v^2 sin 30)/9.8 v^2 = 20 * 9.8 = ...
Tuesday, January 10, 2012 at 10:26pm by Steve

physics college
A billiard ball that is initially at rest is given a sharp blow by a cue stick. The force is horizontal and is applied at a distance h = 2R/3 below the centerline, The speed of the ball just after the blow is v0 and the coefficient of kinetic friction between the ball and the ...
Wednesday, May 16, 2012 at 1:12am by lost

Physics-Just a clarification
I have a question? What does hf = hi+Vivertical stand for? I haven't seen hf or hi or Vivertical yet in class-I just started a few weeks ago. Bob Pursley answered a question but I don't know what the abbreviations mean. Thank you for the direction-
Wednesday, October 6, 2010 at 7:26pm by LynAnne

Physics HELP! QUICK!
So does that mean you can just use friction force without resolving it into its components, and so what you use in you equation would be: M V^2/R = M g sin A - M g cosA*mu (This is what you did in the previous example) So did you basically just ignore the vertical component of...
Wednesday, December 22, 2010 at 3:21am by Simon

A Physics book , mass unknown , is dropped from a table . its velocity just before hitting the ground is 9.39 m/s . what is the height of the table ?
Monday, February 6, 2012 at 7:55pm by bob

Well to be perfectly honest, i just started taking physics so im only up to the level where to me d=d and not rate x time....i am totally lost at what u did, but its ok, thanks for your help anyway, i think i understand a bit more now.
Thursday, July 17, 2008 at 10:35pm by anonymous

We have no idea what "the system" is. In physics, a descriptive labeled figure is often an important part of the problem. It isn't just answering word problems or plugging numbers into equations in a book.
Friday, March 5, 2010 at 7:35pm by drwls

My goodness! Twelve physics posts in a row under three different names. I'm so sorry you know nothing about any of these problems! Or are you just dumping your homework on us, hoping someone will help you cheat?
Tuesday, May 15, 2012 at 7:37pm by Ms. Sue

the answer is exact. Going any further would just be to approximate it with a decimal. e^2-7 is just as good as π/4 or √23-ln(3). It's just a number.
Friday, January 4, 2013 at 4:11pm by Steve

umm sry i dont understand, im in just regualr physics and i dont konw what kinematic or any equations are. could you give me the equation or something
Monday, November 14, 2011 at 6:33pm by Lindsey

I am sorry but you are mistaken. This is the first time I have been on this website in about 3 weeks. I have posted the question just above this one as well and another one just a minute ago for you to check my working. I will make an educated guess and repost the question.
Monday, November 5, 2007 at 8:19pm by Mary

A baseball player pops a pitch straight up. The ball (mass 160 g) was traveling horizontally at 32.0 m/s just before contact with the bat, and 24.0 m/s just after contact. Determine the magnitude of the impulse delivered to the ball by the bat.
Sunday, April 10, 2011 at 6:08pm by cloey

I do not like to be mean but it is not my task to just do your home work for you. If you get stuck that is what we are here for. However we do not just plow ahead and do all the problems. It would be great practice for me but I have been doing these since 1954. You are the one...
Friday, March 2, 2012 at 1:03pm by Damon

d1 = (0,3.98) d2 = (2.01/√2,2.01/√2) d3 = (-1.12/2,-1.12√3/2) just add them up and convert back to compass directions. If you get stuck, just say where.
Thursday, September 26, 2013 at 11:26am by Steve

I just Really need help when it comes to physics so i'd REALLY appreciate it if someone helped me
Sunday, June 10, 2012 at 6:40pm by yasmeen

Physics-Just need a formula, please and check
Can someone please just check this problem and let me know if its wrong and the correct formula Thank you
Thursday, October 7, 2010 at 4:37pm by Sam

Determine the velocity just as the ball makes first contact with the floor. Determine the velocity as the ball just just leaves the floor. Calculate the delta velocity. Divide this by the delta t to get (delta v)/((delta t) which is average acceleration. Look for the ...
Thursday, October 4, 2007 at 3:47pm by Quidditch

A uniform plank of length 5.1 m and weight 235 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 458 N walk on the overhanging part of the plank before it just begins to ...
Monday, October 8, 2007 at 7:28pm by Student

A physics book of unknown mass is dropped 5.00 m. What speed does the book have just before it hits the ground? Assume that air resistance is negligible
Monday, December 12, 2011 at 12:37am by Anonymous

Please help with math!!
Reiny's not asking for more info. He just wants you to do some of the work, rather than just providing the answer. Just evaluate the expression and it should be the same as one of the choices.
Tuesday, October 23, 2012 at 10:49am by Steve

is anyone aware of evidence (preferably experimental evidence) in support of time dilation. in other words proof that it actually occurs. that is, experiments other than the one of Hafele and Keating. i just need a starting point for some research.. just a name or the title of...
Sunday, January 10, 2010 at 11:37am by frank

I tried 8.6*10^-2 & didn't work & now I have exceeded all attempts. Thank you for your help, however. I am not just sure what the question was really looking for. I will attempt to ask my prof if I get the chance. Perhaps it has something to do with the kg's? Or......
Monday, October 1, 2007 at 2:34pm by DD

So... The task is to evaluate the design of three types of car tires, and explain how each type differs to maximize performance. Physics terminology is to be included in our report. -------- I just need a starting point. What types of tires do you recommend I research and what...
Saturday, February 16, 2008 at 8:09pm by Lucy

Good study tips for physics? I am having trouble understanding the theory and how to apply it into the equations. People have told me I should not just punch in numbers, but I do not know what to do besides that; I treat it like math.
Sunday, September 18, 2011 at 6:21pm by Daniel

Review the definitions of KE, power, momentum etc. Then tell us what you think. If you just pass off your multiple choice questions for us to do, you won't learn much physics.
Saturday, July 30, 2011 at 12:29am by drwls

Sorry, I can do part 1 and 2 relatively easily. However, I suck at physics and was honestly hoping to receive an answer like the one you gave me. I just wanted to know how to do it, not necessarily get the answer. Thanks
Friday, January 6, 2012 at 9:30pm by Will

For the pendulum just review L18 video 3. For a) you should use the conservation of mechanical energy (mv(bot)^2)/2 = (mv0^2)/2 + mgh where h is the distance of the ball from the ground calculated as h = L*(1-cos(theta)). For b) put together y component of gravitational force ...
Friday, November 1, 2013 at 8:56am by Troll

we just did an practical on newton's second law and we just have to do a report on it.... basically there are two parts to it, first part is when the overall mass of the system remains constant and the second part is when the force remains constant. there are two parts which i...
Saturday, September 20, 2008 at 8:43am by WT

You have just said what the vector (velocity) of the ball is just after the tip. (4.5 m/s at an angle of 70 degrees above the horizon) What "resultant vector" are you talking about? Before it is tipped, its vector velocity will have changed due to the action of gravity.
Thursday, October 27, 2011 at 10:11pm by drwls

Bob's formula will give you the correct answer in Joules. If you used energy units of electron Volts (eV), as is often done in physics, the answer would be just 30,000
Saturday, January 2, 2010 at 11:16am by drwls

Physics 2414
The problem I'm having (in general with Physics) is knowing which equation to use. I used the air resistance force = mg, and the answer came out wrong. So I just don't know what I'm doing wrong.
Thursday, March 31, 2011 at 1:04pm by Aestas

Physics 2414
The problem I'm having (in general with Physics) is knowing which equation to use. I used the air resistance force = mg, and the answer came out wrong. So I just don't know what I'm doing wrong.
Thursday, March 31, 2011 at 1:04pm by Aestas

when resolving gravity into components Fg (x component) = Fg sin theta when you get the units you get Newton times a degree how come we just ignore the degree for example if it was 9 N you wouldnt say 9 N (degrees) why not? How do the degrees just magically dissapear not to ...
Thursday, August 20, 2009 at 2:41pm by QUESTION

well that was not the teacher just did one problem with us and gave us these review problems...and i searched everywhere in order to figure out how to do these would be great if you can help at least get started on them and then from there i think i ...
Tuesday, October 5, 2010 at 5:51pm by Anonymous

the coefficient of friction between a block of weight 15N and a horizontal board on which it is resting is 3.0find the horizontal force which will just remove the block and the force acting at an angle of 30 with the horizontal which will just move the block.
Friday, March 1, 2013 at 9:37pm by jane

Is C just 9.8 N
Sunday, February 28, 2010 at 4:46pm by Kate

DIdn't I just do this?
Monday, October 11, 2010 at 4:21pm by bobpursley

I just did this.
Wednesday, January 19, 2011 at 8:47pm by bobpursley

I just did
Wednesday, June 15, 2011 at 11:57pm by drwls

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