Search: its physics.. i just want the formula

Number of results: 136,153

MATH
Never mind worrying about the formula h = - g (d/Vxo)^2 + Vyo*(d/Vxo). I was just trying to derive the correct formula using physics, since the formula you provided was wrong.
Sunday, July 13, 2008 at 2:23pm by drwls

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

Check my physics
Would you mind checking one of my problems from my physics study guide? I know the answer and just want to make sure I am using the right formula. :) A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by ...
Thursday, March 7, 2013 at 8:40am by Anna

Physics (Formula)
I just need the formula. A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is
Wednesday, February 13, 2013 at 10:23pm by Eve

math
Are you sure your formula is not just |A+B+C|/sqrt(A^2+B^2) ? It does not make sense to find the (2,-2) point and then go to the trouble of using your formula. I have never seen (or needed) this formula.
Wednesday, October 22, 2008 at 9:08pm by Damon

Physics-Please help with formula
If I have an electric field around a charged object that is 2.95 x 10^6 N/C at a distance of 0.400m, how would I find the charge on the object? If you could just direct me with a formula-then I'll do it and check back with my answer-Thank you for you help
Friday, February 25, 2011 at 4:22pm by Shiela

its physics.. i just want the formula
A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass. Answer in units of...
Thursday, January 17, 2013 at 11:16pm by Rah_rAh

Physics
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

math and physics
i just want to know form where i got on this formula the 4.9t² on this formula s=4.9t²+Vot+h because the book only say that a physics theory shows that when an object is thrown upward with an initial velocity Vo, its approximate height is given by that quadratic ...
Friday, October 24, 2008 at 7:10pm by steve Alexander

physics
just do the math there is a formula
Thursday, December 3, 2009 at 4:05pm by someone

chemistry
why is the molecular formula of oide of arsenic in its gaseous state is not neccessarialy the same as its empirical formula what does this mean and how do i do it Molecules are known to dimerize or trimerize. We actually don't know what the molecular formula is until we ...
Tuesday, January 30, 2007 at 4:14pm by donald

physics
but the answer in the text book is (a) 27.7 moles (b) 2.381x10^7pa i just want the formula so i can attempt the problem myself
Monday, December 31, 2012 at 9:11pm by physics student need help

Physics
A 700# rock sits atop a 150 foot cliff. 1) If it is pushed off how much kinetic energy is in the rock just before it hits the ground? 2) How much potential energy does it have just before it hits the ground? On 2 will I use the mgh formula? If so what height do I use? On 1 , I...
Saturday, September 22, 2012 at 6:48pm by Uris

Physics
I don't wanna write it all out so I'll just give you the general formula. #2: vf=√[2*(m_1gLsinθ-m_2gL-0.5kL^2-μkm_1gcosθL)/(m1+m2)] Just to be clear, all of those values^^^ are under the square root sign. #4: v1f=[(v1)(m_1-m_2)/(m_1...
Thursday, October 25, 2012 at 8:02pm by Mike

physics
i'm just unsure of what formula i should apply!
Tuesday, November 8, 2011 at 8:29am by Lydia

Chemistry re-post URGENT
Your formula of C18H26O3N is correct. The last part is done with the Each molecule contains one atom of nitrogen. What is the molecular formula of capsaicin? The catch is in the statement. If each molecule contains one atoms of N, then the empirical formula must be the same as...
Monday, October 22, 2007 at 7:44pm by DrBob222

Physics
A ball is thrown from ground level up in the air at 61m/s. How fast is the ball going 1s after being thrown. This problem wants you to use the formula v = (-1/2)gt^2 + v_0 g=9.8m/s^2 and v_0 = 61m/s so v = (-1/2)g*(1s)^2 + 61m/s at t = 1. I wrote the formula wrong. It should ...
Thursday, September 14, 2006 at 3:44pm by Jennifer

its physics.. i just want the formula
(M+2.2Kg)(0.57m/s)=(7.7Kg)(2.9m/s)
Thursday, January 17, 2013 at 11:16pm by Anonymous

physics
Do i need to find the g from my data for that? or do i just write that formula?
Thursday, October 20, 2011 at 6:18pm by Anonymous

Math
notice that the formula I gave is just a variation of the Cosine Law formula.
Monday, March 7, 2011 at 1:53pm by Reiny

Chemistry
I assume you know how to find the empirical formula since you obtained the right answer for C5H10O. The molecular formula is 86.13/empirical formula mass = x where is is the multiplier to be used on the empirical formula. Just suppose the empirical formula mass is 42. Then 86....
Friday, January 20, 2012 at 10:14pm by DrBob222

accounting
How do I set this problem up to do it? I do not want the answer just the formula. The question is for Present Value, Future Value, and Annuity Due: . Your uncle offers you a choice of $30,000 in 50 years or $95 today. If money is discounted at 12 percent, which should you ...
Monday, July 20, 2009 at 5:45pm by Momof8

its physics.. i just want the formula
Not sure, but I believe it is (M+M)V=MV. Solve for your unknown.
Thursday, January 17, 2013 at 11:16pm by Anonymous

Physics
I am still lost! I understand the formula I just don't know what numbers to put where.
Sunday, February 12, 2012 at 6:38pm by Pat

PHYSICS!!
can you tell me exactly what you did instead of just giving me the formula? please and thank you
Wednesday, July 13, 2011 at 4:42pm by Allison

Physics
Thanks alot. I had the right formula, i just didn't have I. Thanks again
Saturday, March 29, 2008 at 5:25pm by Amanda

Read this first! I found the formula for circumference.
The circumference formula is: c = pi times diameter OR c = 2piradius Sorry, I don't know how to make a pi symbol on the keyboard. :) I couldn't find the area formula... but just place 9.3 in where I said radius. Hope I helped! :)
Monday, February 23, 2009 at 6:56pm by Willow

mth 209
who says there is a formula? It's probably just a collection of data. There may be a formula that approximates it, but it will not be exact.
Wednesday, January 4, 2012 at 11:46am by Steve

Physics (Formula)
A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!
Wednesday, February 13, 2013 at 10:24pm by Eve

physics
So the first formula period=2pi*sqrt(r/g) is incorrect? I am just confused I am sorry
Friday, December 9, 2011 at 5:13pm by me

physics
You can get the answer of time by having this formula : x = 1/2 (v0-v)a.t just transpose it. . . . . a= 9.806 m/s^2
Thursday, November 16, 2006 at 2:39pm by Quinee

Math
For each geometric series, calculate t6 and S6. a) 6 + 30 + 150 ... So I'm not exactly looking for an answer to this question but I was wondering why they want you to find t6 too? Would finding out t6 (via general formula) help in any way when finding S6? I'm not ...
Saturday, January 12, 2013 at 6:04pm by Crystal

physics
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

Chemistry
the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula
Sunday, November 28, 2010 at 10:24pm by tia

Chem/Physics
Can you not at least look in your textbook? There just HAS to be a formula for kinetic energy: K = 1/2 m v^2 You have m and v. What's the problem?
Friday, October 14, 2011 at 2:15pm by Steve

physics
I need some help getting a formula. I remember in class u get this really wierd looking equation like Vicosg-((vsin(pheta))/2g) I think this is what the equatin is when I'm asked to "Derive a formula for the Range of a projectile based on Vi and the Launch angle, ...
Monday, December 8, 2008 at 10:42pm by Physics

Physics
I need some help getting a formula. I remember in class u get this really wierd looking equation like Vicosg-((vsin(pheta))/2g) I think this is what the equatin is when I'm asked to "Derive a formula for the Range of a projectile based on Vi and the Launch angle, ...
Monday, December 8, 2008 at 8:10pm by Physics

Chemistry
I would go with a also. b appears to be just the trimer of a and unless we know the compound is a trimer (and thus the molecular formula instead of the empirical formula) I think the empirical formula is the way to go. You know we write NaCl even though it really is NaxClx.
Sunday, May 13, 2012 at 11:53pm by DrBob222

Physics
Here, I am dealing with a Science formula for momentum. The formula is: M= mv So, I have: m= 10 grams (.01 Kilograms) v= 5,000 centimeters a second (50 m/s) It says to Find M and also solve the formula for M. Please help!
Tuesday, June 8, 2010 at 5:45pm by Amal

Physics please help cant figure this out
im just not sure what formula exactly to use to solve each part a,b, and c
Friday, November 5, 2010 at 9:45am by joseph

physics
it looks right to me. just plug in 12.5N and 4kg into the formula and solve for acceleration.
Sunday, September 19, 2010 at 5:14pm by TutorCat

chemistry
He gave you the wrong formula. I know that this is over a year after you posted, but you should actually just use the formula d=PM(molar mass)/RT.
Sunday, October 24, 2010 at 8:39pm by weirdo

chem
i tried the answer in my online hw and it said it was wrong. i am looking in my text book and CnH2n-2. the answer you guys are saying is the formula for alkynes. but i need to find the formula for dialkene. the formula for just alkene is CnH2n. but i dont know how to make that...
Sunday, October 24, 2010 at 4:48pm by rebekah

Physics
If the resultant is zero the force has to be equal and opposite. This one really has no formula. It is just the thought process.
Tuesday, March 5, 2013 at 10:59am by Dr. Jane

physics
Just plug and chug with the good old formula: s = Vo*t - 1/2 at^2 s = 17t - 1.3t^2 = 17*3.3 - 1.3*3.3^2 = 41.9m
Wednesday, October 5, 2011 at 3:09pm by Steve

PHYSICS - Waves
Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. If 3 sound waves pass a microphone in 4.0 s while traveling 5.0 m/s, what is the wavelength of the waves? (6.67 m)
Tuesday, April 9, 2013 at 6:06pm by Diana

algebta 2
To find the nth term of an arithmetic sequence the formula given is a(sub n) = a (sub 1) + (n-1)d. Why is (n-1) a part of the formula? Why isn't just n?
Tuesday, April 27, 2010 at 3:04pm by Kevin

Chemistry
If the formula you wrote is correct, yes. How do I know. Because there is only 1 O atom. For the molecular formula and empirical formula to be different, the molecular formula must be a multiple of the empirical formula. And for that to happen, the molecular formula must be ...
Tuesday, March 9, 2010 at 3:11pm by DrBob222

Physics
I have to find the eccentricity of an elliptical orbit with one focus, earth's center, E. I know the formula to find eccentricity is sqrt(1-)(b^2/a^2), but I don't know where to use the radius or if I need it. Do I just need to use the eccentricity formula to find it? ...
Tuesday, April 22, 2008 at 3:39pm by Thomas

Chemistry
No I wasn't, but can I just use the pressure formula of P() = nRT/V and then just add all of them together?
Saturday, May 28, 2011 at 8:48pm by K

Calc-Sequence
Find a formula for 1/2, -1/4, 1/6, -1/8, 1/10... So I know that the sequence is just adding 2 to the bottom but i dont know how to write it with a formula including n's..im stuck
Monday, April 21, 2008 at 12:30am by Paul

physics
i'm not very good at physics for the first one do i use the formula F=-Kx to make the answer -4500 ? and for the second i really have no idea what formula to use
Wednesday, October 15, 2008 at 9:14pm by sammi

Chemistry
Yes, I said the empirical formula of CF is correct. My error for empirical mass; it is 12 + 19 = 31 as you noted. Here is how you do the molar mass. PV = nRT P = 1.10 atm V = 10.0 mL = 0.0100 L n = solve for this R = 0.08206 L*atm/mol*K T = 288.5 K. Solve for n = about 5E-4 ...
Friday, November 23, 2012 at 9:04pm by DrBob222

Physics
What is the wavelength of a radar signal that has a frequency of 30 GHz? The speed of light is 3 × 10^8 m/s. Answer in units of m Giving me the formula is just fine
Sunday, April 1, 2012 at 8:58pm by angel

physics
Just apply the tried-and-true F=ma formula. F = 1.3 * 4.2 = 5.46N 5.46 = 7.5a, so a = 5.46/7.5 = 0.728 m/s^2
Thursday, September 22, 2011 at 11:32pm by Steve

algebra
first you must have the formula a^2+b^2=c^2 now you just have to plugg in the numbers into the formula a^2+24^2=25^2 solve for a do it and then post your answer I will check if it is right
Tuesday, December 4, 2007 at 8:07pm by Claudia

Physics
Well you know the force and mass. So use this formula: F=ma. F=250N m=20kg Just rearrange it and you will be able to get the maximum acceleration the sack can withstand before breaking.
Wednesday, October 24, 2012 at 7:32pm by Ravin

Physics
Rearrange the formula to calculate Q, using algebra. You get Q = r^2*E/k k = 8.99*10^9 N*m^2/C^2 (a constant of nature) E = 100 N/C r = 0.05 m Just crank out the number. It will be in Coulombs.
Saturday, May 19, 2012 at 2:10pm by drwls

Physics
pi = 3.1416 They provide the formula to use. Just do the calculations and compare the results to the sound speed. Show your work if you need further assistance.
Thursday, November 18, 2010 at 8:45am by drwls

AP Physics
Hello I was trying to find the proof of the formula x = x0 + v0t +.5at^2 were the zeros are subscripts My text book dosen't explain it that well. ok well it involves the formula for average velocity aver velocity = 2^-1(v0 + v) were the zero is a subscript and this is just...
Saturday, June 13, 2009 at 7:48pm by AP Physics

chem-repost
but. i can tell its wrong because of what i stated: "i tried the answer in my online hw and it said it was wrong. i am looking in my text book and CnH2n-2. the answer you guys are saying is the formula for alkynes. but i need to find the formula for dialkene. the formula ...
Sunday, October 24, 2010 at 5:57pm by rebekah

Algebra
If you can't recall the formula, just reason it out. As x,y get big, the equation just looks like x^2/4 = y^2/9 9x^2 = 4y^2 3x = 2y y = 3/2 x or -3/2 x
Wednesday, October 12, 2011 at 11:29am by Steve

Physics-Please help with formula
Thanks-I think I'm beginning to get it-we just started this in class yesterday and I was trying to do the work due next week-thanks for your patience and explanations-I really appreciate it
Friday, February 25, 2011 at 4:22pm by Shiela

physics
I know that the density of the water is 1025kg/m^3. And I know that to get the pressure you divide the force by the are. I also have the formula P2=P1+pgh. I just dont know where to go from here. Please help!
Monday, November 30, 2009 at 4:12pm by need help!

PHYSICS - Waves
Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. Sound waves with a wavelength of 2.5 m are traveling 7.5 m/s. How many waves will pass a microphone in 10.0 s? (Answer 30 waves)
Tuesday, April 9, 2013 at 6:01pm by Diana

physics
you are given the formula d=30-q. use it to find a formula for q using d.
Thursday, April 7, 2011 at 4:54pm by Anonymous

Physics
An approximation formula is speed=331.5(1+.6Temp) where temp is in Celcius. check that formula.
Friday, April 13, 2012 at 10:19am by bobpursley

algebra
how would i work out the following problems solve each formula in terms of the given variable 1. 5d-2g=9 ;g The formula A=2h(l+w) gives the lateral area a of a rectangular solids with length l, width,w and height h. 2. solve this formula for h 3. solve this formula for l The ...
Monday, September 22, 2008 at 6:15am by jessica

chemistry
The simplest formula. For example, C2H6 is the molecular formula for ethane but thre empirical formula is CH3. CH2O is the empirical formula but the molecular formula could be C6H12O6.
Monday, September 5, 2011 at 11:50pm by DrBob222

Physics
gggg, for question 1)f) B_0 what is it the formula? Could you give us the value, as the formula from X10 did not work for me. thanks!
Saturday, May 11, 2013 at 11:22am by FLu

Physics
@anon this formula works for my friend but not for me I don't know what is the problem going on perhaps the formula isn't derived correctly...:(
Friday, April 26, 2013 at 1:20pm by X10

math derivative please help
the derivative of 2x^e is zero right or no? do i have to use the log formula 2 x^e is x to the power 2.718.. It is not a constant and therefore the derivative is not zero. Use the formula for the derivative of x to a power that is constant (x^a). The formula for that may ...
Sunday, September 24, 2006 at 10:26pm by Anonymous

College physIcs
"You don't seem to be willing to take step one in answering these problems yourself. " !@#$%^& you. I took that step !@#$%^&, what good is just knowing a formula?
Friday, February 19, 2010 at 5:52pm by bob

physics
What is the general formula for energy?When asked to write formula for energy in general without specifying kinetic or potential or work can we write eienstien's e=mc2 formula?
Saturday, September 22, 2012 at 10:53pm by J.Nandhini

chemistry
g C = 0.468 x (12.01/44.01) = 0.1277 g C. g H = 0.255 x (2/18.015) = 0.0283 g H. g O = 0.213 - 0.1277 - 0.2831 =0.057 g O. Now convert those to moles. 0.1277 g C/atomic mass C = ?? 0.0283 g H/atomic mass H = ?? 0.057/atomic mass O = ?? Now find the ratio of these to each other...
Saturday, April 3, 2010 at 8:15am by DrBob222

Physics
Oh thanks Flu! anyone formula for second RL circuit question and formula for Bz magnetic field loop?
Friday, April 26, 2013 at 1:20pm by Ortum

physics
Not quite sure if this is the correct procedure, but what I would have done is use the formula: a=[delta]v/t since we are given a and t. so 5=34/t and I got t=6.8s. Where did you find this question? Just out of curiosity.
Tuesday, June 14, 2011 at 3:10pm by Havanna

Physics
A hypothetical spherical planet consists entirely of iron (p=7860 kg/m^3). Calclate the period of a satellite that orbits just above its surface. I started out with the density formula P=M/V, but i kept subbing in other formulas, but i get stuck..can someone help me? thanks. I...
Wednesday, March 3, 2010 at 12:49am by ALan

PHYSICS - Waves
Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. It takes 2.30 s for an echo to come back from a sound wave sent to the bottom of a 25 degree C lake. How deep is the lake at this ...
Tuesday, April 9, 2013 at 6:05pm by Diana

Physics
Thanks Anonymous I have all other just some part from 1, 2 and 2 missing. If Phy or someone figures out please let us have it or the formula. thanks!
Saturday, May 11, 2013 at 11:22am by FLu

physics
At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?
Monday, January 30, 2012 at 7:45pm by Jonathon

Physics
Suppose a straight 1.25 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 multiplied by 10-5 T. What current would the wire ...
Thursday, February 10, 2011 at 6:42pm by Justin

Pre Algebra
We can't see you diagram unfortunately. If it is a triangle you are describing, just state the lengths of the sides. If 3 sides of a triangle are known, then you can use a formula called Heron's Formula, you can find it on Google.
Friday, March 21, 2008 at 5:26pm by Reiny

Chemistry
Can someone just check this one for me? The neutralization reaction between Al(OH)3 and HNO3 produces a salt with the formula Al(NO3)3 + H2O Yes and no. It DOES produce a salt and that salt is Al(NO3)3 with the formula you have. However, the H2O, although a part of the ...
Sunday, February 25, 2007 at 11:05pm by Kellie

math
Since this is a math question, I am surprised they did not tell you the formula to use. This is really a question about physics. They may be expecting you to use a formula with a different value of g. The formula I gave you neglects air resistance, which would lengthen the ...
Wednesday, March 19, 2008 at 2:24pm by drwls

chemistry.
What's the empirical formula? Calculate the empirical molar mass (by adding the atomic masses of the elements). Let's just suppose CxHyOz = 57. So divide 116/57 = 2.03. Round that to a whole number (the relative molar masses are usually done by a procedure that gives ...
Sunday, September 20, 2009 at 2:12pm by DrBob222

MATH
For the first five months algebrically i got: 1: 2400 2: 2040 3: 2448 4: 2080.8 5: 2496.96 i tried using this formula: 2000(1+0.2)^n when i plugged in 1 for n i got 2400. however, when i plugged in 2 for n i got 2880. which isn't right. so i changed the formula to 2040(1...
Monday, September 5, 2011 at 6:22pm by Amy

Math please help!
For the first five months algebrically i got: 1: 2400 2: 2040 3: 2448 4: 2080.8 5: 2496.96 i tried using this formula: 2000(1+0.2)^n when i plugged in 1 for n i got 2400. however, when i plugged in 2 for n i got 2880. which isn't right. so i changed the formula to 2040(1...
Monday, September 5, 2011 at 9:15pm by Amy

Physics
Anonymous, I think that is question 3 and was provided by X10. Just use the below formula, it works I tried. Q:3 for part a: B=E/v for part b: (L^2+h^2)/2L for part c: m=rqB/v
Friday, April 26, 2013 at 1:20pm by FLu

algerba
The formula for the area (A) of a triangle is A = (1/2) b h where b is the base length and h is the height measured from that base. It does not matter which side you call the base. So, just use that formula, and the area will be in square feet.
Saturday, October 25, 2008 at 1:17pm by drwls

physics
#1. 1/Vf-1/Vo=(A/m)tf #2 just solve for a #3 Plug in. A=9m^2 then plug into formula and solve for d
Saturday, October 1, 2011 at 10:57am by William King

Physics
Thiiiis question. Okay, so the only two formulas you need are: 1) dsinθ=mλ 2) y=Ltanθ You already have all of your variables: d=5.35x10^-6m m=3 L=2.51m λ_blue=4.25x10^-7m λ_red=6.40x10^-7m So now, just sub your values into formula 1...
Thursday, November 29, 2012 at 8:35pm by Mike

Physics
The question said find the speed of sound at a certain temperature. What formula would you use? Could someone tell me the formula so I could do the questions that correspond.
Wednesday, February 25, 2009 at 11:26pm by Lena

Physics Derivation URGENT!!
What is the physical situation that this formula is supposed to apply to? What is theta? One can't derive a formula of this type without knowing the problem
Sunday, September 30, 2007 at 10:35pm by drwls

physics
Well tiffany, you use this equasion: F=ma+mg. Manipulate the formula to get mass (which is the unknown here) on one side: f= ma+mg FACTOR m f=m(a+g) DIVIDE BOTH SIDES BY (a+g) f/(a+g)=m This can be used for both parts of the equasion. (remember that g=9.81 m/s^2.) a)Since the ...
Thursday, September 30, 2010 at 10:53pm by Gregorius

Software - Excel
Hi, Im doing my maths coursework andI need to type in a formula and press enter and then I need "FILL DOWN (CTRL D)". How do I do this? I dont want to get the same number from what Ive alreay typed in on the previous cell, I just want that formula to function in the ...
Monday, September 27, 2010 at 12:41pm by Brogan

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