Number of results: 160,621
Physics- Elena please help!
Find solution in Related Questions
Thursday, October 18, 2012 at 5:01pm by Elena
physics to Elena please reply
thanks Elena I really appreciate your help, but the answer has to be in minute and I got .42 min for 24.7 s, and .41 min for 24.5 s, but its wrong I don;t know why can you please help. Thanks :)
Wednesday, April 25, 2012 at 12:07pm by Romy
Physics- Elena please help!
a= μ(s)•g= 0.351•9.8=3.44 m/s², a1= μ(k)•g= 0.305•9.8 =2.99 m/s²,
Wednesday, October 3, 2012 at 6:33pm by Elena
Physics Need quick help please
Estimate the total binding energy for copper. 550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into its constituent nucleons. E= in Joules Please help me out I got 1st part I need the Energy in joules am confused please help me out...thanks Physics...
Wednesday, May 8, 2013 at 5:18pm by Leila
Physics- Elena please help!
A) Find intensity by using B= 10 X log (I/10^-12) formula B) Take the answer for A multiply it by the number that it gives you for the new amount of cars that pass. Divide that number by your 172.
Wednesday, December 5, 2012 at 6:26pm by Not Elena
Physics Please Help ASAP
Here is the last of the answers by Elena: Physics-PLEASE HELP ASAP - Elena, Thursday, June 7, 2012 at 10:41am For Bremsstrahlung radiation (or "braking X- radiation" ) the low-wavelength cutoff may be determined from Duane–Hunt law : λ =h•c/e•...
Thursday, June 7, 2012 at 11:00am by Damon
Physics(Please, please check)
You can find the solution at your previuos post
Sunday, June 10, 2012 at 2:25pm by Elena
PHYSICS PLEASE HELP !
a, b, d
Friday, May 4, 2012 at 1:32am by Elena
physics help please
a, b, d
Friday, May 4, 2012 at 2:39am by Elena
@ elena - intro to physics
What is the correct answer? I'll try to understand where is the mistake.
Sunday, April 15, 2012 at 2:54pm by Elena
Physics
Thanks, Elena...
Friday, May 10, 2013 at 10:15pm by birju - HELP PLEASE!!!!!!!
PHYSICS - PLEASE HELP
W=m•g•h=m•g•d•sin30
Friday, November 30, 2012 at 11:19am by Elena
PHYSICS - PLEASE HELP
W=m•g•h=m•gvdvsin30
Friday, November 30, 2012 at 11:19am by Elena
Physics- Elena please help!
Thank you!
Saturday, October 27, 2012 at 3:12pm by Anonymous
Physics- PLEASE HELP
F=m2•a
Wednesday, October 17, 2012 at 3:43pm by Elena
Physics- Elena please help!
Thank you!
Tuesday, October 16, 2012 at 11:33am by Anonymous
physics-please help
2.8/(3+x) = 1.2/x, 2.8• x =1.2•3+1.2•x, x=3.6/1.6=2.25 m
Monday, August 27, 2012 at 8:09am by Elena
physics- please help
A : F=ma B : m= F/a
Sunday, April 29, 2012 at 4:55pm by Elena
Physics to Elena
I believe that the correct answer is 1.58•10¹⁴ J.
Wednesday, May 8, 2013 at 12:51pm by Elena
Physics..Elena or anybody please help
0.881
Monday, May 20, 2013 at 3:16am by Help please
Physics- PLEASE HELP
L•sinθ
Tuesday, November 6, 2012 at 6:02pm by Elena
Physics(Please help)
From reference book
Wednesday, June 20, 2012 at 11:42am by Elena
Physics -please help
10 N-3 N = 7 N (to the right)
Thursday, March 29, 2012 at 9:56am by Elena
Physics- Elena please help!
h1=(m+m1) •u²/2 • (m+m1) •g =u²/2 •g= =4²/2•9.8=0.82 m
Tuesday, October 16, 2012 at 11:33am by Elena
physics
Please can you tell the numerical value
Monday, April 29, 2013 at 4:53am by Elena
Physics- Elena please help!
Junior in College
Wednesday, December 5, 2012 at 6:26pm by Mary
Physics HW Help, Please
E= mv²/2
Saturday, December 1, 2012 at 11:52am by Elena
Physics- Elena please help!
Work is in Joules !!!!
Wednesday, October 10, 2012 at 12:47pm by Damon
physics
Please see the Related Questions below
Thursday, April 11, 2013 at 12:04am by Elena
Physics- Elena please help!
Sorrry i was responding to facebook
Wednesday, December 5, 2012 at 6:26pm by Killianna
Physics- Elena please help!
I'm still confused on part c.
Tuesday, October 16, 2012 at 11:33am by Anonymous
physics
Please see the Related Questions below.
Thursday, October 11, 2012 at 8:11pm by Elena
Physics
Please see the Related Questions below.
Wednesday, September 12, 2012 at 11:49pm by Elena
physics
Please see the Related Questions below.
Friday, October 12, 2012 at 1:39pm by Elena
Physics- Elena please help!
For Tension I am getting 117.4
Wednesday, October 10, 2012 at 12:47pm by Anonymous
Physics- Elena please help!
I am not getting the right answer!
Sunday, October 7, 2012 at 2:13pm by Anonymous
physics
Thanks Elena, but I tried the answer and its wrong I don't know why. Could you please help me. Thanks.
Friday, May 25, 2012 at 4:25pm by Adam
physics help please
F=15 N s =(23•13/0.6) m W =F•s =7475 J
Monday, May 21, 2012 at 7:44pm by Elena
Physics to Elena
thnx Elena :)
Tuesday, May 14, 2013 at 4:38am by Rohan
Physics- Elena please help!
(a) ma=F(fr) = μ(s) •N= μ(s) •m•g, a= μ(s)•g, (b) ma1=F1(fr) = μ(k) •N= μ(k) •m•g, a1= μ(k)•g,
Wednesday, October 3, 2012 at 6:33pm by Elena
Physics- Elena please help!
T(max) = 2m(g+a)= 2mg +2ma. a={T(max)-2mg}/2m = {87.8-2•3.38•9.8}/2•3.38 =3.2 m/s²
Wednesday, October 3, 2012 at 10:44pm by Elena
Physics Need quick help please
Thanks Elena :) I really appreciate your help!
Wednesday, May 8, 2013 at 5:18pm by Leila
PLEASE COULD SOMEONE HELP ME OUT Physics
Thank you Elena your a life saver :)
Monday, February 25, 2013 at 10:28pm by John
Physics URGENT!!!
Please see the Related Questions below
Friday, October 19, 2012 at 4:21pm by Elena
Physics- Elena please help!
(b)What was the speed of the bullet at impact with the block?
Thursday, October 18, 2012 at 5:01pm by Megan
Physics- Elena please help!
Great, that's what I had! Can you solve another problem for me?
Wednesday, October 3, 2012 at 6:33pm by Anonymous
Physics- Elena please help!
Great, that's what I had! Can you solve another problem for me?
Wednesday, October 3, 2012 at 6:33pm by Anonymous
Physics- Elena please help!
Can you solve so I can compare my answers to yours?
Wednesday, October 3, 2012 at 6:33pm by Anonymous
Physics-please help quick!!
For converging lens ---- between F and 2F
Sunday, June 10, 2012 at 6:49pm by Elena
physics- please respond
Look at the answer in your previuos post
Thursday, May 24, 2012 at 10:18pm by Elena
Physics need work checked
If you know the answer, show it. please
Wednesday, May 2, 2012 at 2:00am by Elena
Algebra Word Problem
I NEED HELP PLEASE!!!!!!!!!! Elena bicycles 7 km/h faster than Dennis. In the same time it takes Dennis to bicycle 60km, Elena can bicycle 81km. How fast does each bicyclist travel. Dennis travel_____ km/h Elena travel ______ km/h
Thursday, January 8, 2009 at 8:22pm by pj
Physics. Please please help!
Elena, Im a little stuck on the first equation you have given. In the denominator, we are supposed to multiply r1 by r2. How did you get 20 x 10? Shouldn't it be 0.1m x 0.02m?
Wednesday, November 14, 2012 at 11:34pm by Meagan
Physics
Two skaters, Elena and Tara, face each other on the ice. Elena has a mass of 57.4 kg, and Tara has a mass of 48.3 kg. Both are motionless until they push away with a force of 33 N. Then Elena has a velocity of 1.4 m/s. What is Tara’s velocity?
Tuesday, November 6, 2012 at 9:35am by Anonymous
Physics to Elena
Thatz what I got too but itz still wrong :/ I don't know why please help me...thanks
Wednesday, May 8, 2013 at 12:51pm by Leila
Physics- Elena please help!
What is the label for the work? I tried Newtons and that is wrong.
Wednesday, October 10, 2012 at 12:47pm by Anonymous
Physics- Elena please help!
v=at a=v/t =24/24=1 m/s² ma=F-F(res) F= ma+F(res) =2300•1+510=2810 N P=W/t=F•s/t=F•v inst P =F•v=2810•24=67440Watt aveP=F• (v+v₀)/2=2810•24/2=33720 Watt
Monday, October 8, 2012 at 3:25pm by Elena
Physics- Elena please help!
I don't understand how to do it, you dont need to be mean about it. I am asking for someone else's help.
Wednesday, December 5, 2012 at 6:26pm by Mary
Physics- Elena please help!
Figure it out. look it up on google. Smarts
Wednesday, December 5, 2012 at 6:26pm by Killianna
Physics- Elena please help!
work done against friction = ENERGY lost That is JOULES !
Wednesday, October 10, 2012 at 12:47pm by Damon
physics HELP PLEASE I REALLY NEED A ANSWER FOR THI
look at your previuos post
Monday, June 4, 2012 at 10:03pm by Elena
Physics(Please respond)
r = 34.3 m, m•g=1320•9.8 =12936 N v^2 =(3.32)^2 =11.02
Tuesday, May 29, 2012 at 7:28pm by Elena
@ elena - intro to physics
I‘ve found the mistake h(o) = v(o)•t - g•t^2/2, 2 h(o) = 2 v(o)•t - g•t^2 v(o) = h(o) /t +gt/2 = 2.2/0.17 + 9.8•0.17/2 = 13.77 m/s. Then try to calculate yourself…
Sunday, April 15, 2012 at 2:54pm by Elena
physics
I agree with Elena on the brakding cuttoff. My answer ignores the continuous spectrum. So for the answer, consider this: What have you covered in your physics class: transitions from energy levels, or the "continuous" spectrum? Good work, Elena.
Saturday, June 2, 2012 at 8:10am by bobpursley
Physics- Elena please help!
okay I would just skip it I'm in 7th grade and that looks hard
Monday, October 29, 2012 at 6:13pm by desha
Physics
Thank you very much Elena for that and also for promptly answering my question on a timely manner!!!
Thursday, October 25, 2012 at 12:51pm by Help Please
Physics- Elena please help!
Can you tell me the values you are getting so I can make sure I did the algebra right?
Wednesday, October 10, 2012 at 12:47pm by Anonymous
Physics(Please check)
ÑOrrect: F=ma E=max V=sqrt(2*fx/m) False: X=(1/2)at^3 E=(1/2)mv
Monday, May 21, 2012 at 2:07pm by Elena
Physics- Elena please help!
PE(spring) =PE + W(fr) k•x²/2 =m•g•(2R) +μ•m•g•s. x= sqrt{2(m•g• 2R +μ•m•g•s)/k} = = sqrt{2m•g• (2R +μ•s)/k}= =sqrt{2•0.5•9.8(3.2 + 0.3•2.2)/84.8}= =0.668 m
Monday, October 29, 2012 at 4:23pm by Elena
Physics- Elena please help!
Forcefromspring=mass*a=kx k= massobject*a/x=.0242kg*3.5m/s^2 *1/.00370 figure k.
Sunday, October 7, 2012 at 2:13pm by bobpursley
physics to Elena please reply
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...
Wednesday, April 25, 2012 at 6:37pm by Romy
Physics- Elena please help!
t=74 min33 sec =4473 sá ω1=v/R1 =1.22/0.021 = 58.1 rad/s ω2=v/R2 =1.22/0.061 = 20 rad/s ε= (ω2- ω1)/t =(20-58.1)/ 4473=-0.0085 rad/s²
Monday, October 29, 2012 at 5:45pm by Elena
Physics- Elena please help!
How about the other way around? You post the values and I check. I already took the course (in 1955).
Wednesday, October 10, 2012 at 12:47pm by Damon
Physics Please Help ASAP
Thankyouuuu So Much Elena you are by far the greatest person who ever lived <3 and u too drwls !
Friday, June 8, 2012 at 12:54am by Ashley
Physics- Elena please help!
ma=F(grav) mv²/R =GmM/R² G •ρ•4πR³/3• m/R² =m(v²/R) R=sqrt{3v²/4πρG}=... M = ρ•4πR³/3= …. T=2π/ω=2πR/v=....
Monday, October 29, 2012 at 6:32pm by Elena
Physics(Please help)
v = sqrt(2•μ• g•s)= sqrt(2•0.0458•9.8•11.9) = 3.27 m/s
Sunday, June 3, 2012 at 11:52am by Elena
Physics(please check)
This is arcsin(1.15/9.8)= =arcsin 0.117=6.74 degr
Wednesday, June 20, 2012 at 10:31am by Elena
Physics(Please respond)
ΔPE = mgΔh = 12•9.8•(7– 2 ) = 588 J
Thursday, May 31, 2012 at 4:49pm by Elena
physics please HELP !
a,non-zero centripetal acceleration, b,aceleration and deceleration d, deceleration
Wednesday, April 18, 2012 at 4:53am by Elena
Physics- Elena please help!
It is not accelerating so friction force is equal and opposite to pulling force.
Wednesday, October 10, 2012 at 12:47pm by Damon
Physics(Please respond)
Mass [s meeasured in kg. Force (mg) - in Newtons. m = 79.2 kg
Monday, May 28, 2012 at 4:23pm by Elena
Physics- Elena please help!
We did part C immediately T cos 40 = 63.2 = pull force = friction force
Wednesday, October 10, 2012 at 12:47pm by Damon
Physics- Elena please help!
Oh ya, I understand part a and b now, but I am still confused on part c. How would I solve this?
Wednesday, October 10, 2012 at 12:47pm by Anonymous
HELP PLEASE PHYSICS!!
Energy = 100• 7•24 =1.68•10^4 W•h = = 16.8 kW•h 16.8•0.08 = 1.34$
Monday, April 9, 2012 at 4:12pm by Elena
Physics Help, Please
m•a=F(fr)=μ(s)•m•g a= μ(s)•g
Sunday, November 4, 2012 at 5:16pm by Elena
Physics- Elena please help!
But im sorry. I have no idea how to figure that out. What grade are you in where u have to answer that question??
Wednesday, December 5, 2012 at 6:26pm by Killianna
Physics Please Help ASAP
1) 21 over 10 Ne - Neon 2)144 over 54 Xe - Xenon
Friday, June 8, 2012 at 12:54am by Elena
physics
Elena: Your answers are very good. If you are interested in joining our volunteer teachers, please click on the contact us link at the bottom. Thanks. Bob Pursley
Thursday, April 12, 2012 at 1:56pm by bobpursley
Physics- Elena please help!
Law of conservation of energy KE =PE (m1+m2) •u²/2 =kx²/2 u=sqrt{kx²/(m1+m2)}=..... Law of conservation og linear momentum m1v + 0= (m1+m2)u v=(m1+m2)u/m1 =....
Tuesday, October 16, 2012 at 4:16pm by Elena
Physics sorry for reposting but I really need help
An example of the neutron absorption reaction is . 1 0 n+10 5 B-->7 3 Li+ 4 2 He The rest masses of each particle in atomic mass units (u) are 1 0 n= 1 u 10 5 B=10 u 7 3 Li =7 u 4 2 He= 4 u where 1u=1.66x10^-27 kg. calculate Q Q= in MeV I have the same question please ...
Wednesday, May 8, 2013 at 8:44pm by Amy
Physics- Elena please help!
I'm not getting the right values! I think they are too large, can you tell me what you are getting so I can try and figure out where I am going wrong!
Thursday, October 18, 2012 at 5:01pm by Megan
Physics I need help someone plz help out
An example of the neutron absorption reaction is . 1 0 n+10 5 B-->7 3 Li+ 4 2 He The rest masses of each particle in atomic mass units (u) are 1 0 n= 1 u 10 5 B=10 u 7 3 Li =7 u 4 2 He= 4 u where 1u=1.66x10^-27 kg. calculate Q Q= in MeV I have the same question please ...
Wednesday, May 8, 2013 at 6:51pm by Amy
Physics to Elena
Estimate the total binding energy for copper. 550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into its constituent nucleons. E= in Joules Please help me out I got 1st part I need the Energy in joules am confused please help me out...thanks Physics...
Wednesday, May 8, 2013 at 12:51pm by Leila
PHYSICS - PLEASE HELP
mv=MV M=mv/V=9.6•0.53/0.12=42.4 kg
Monday, November 26, 2012 at 3:28pm by Elena
Physics Need Help PLEASE
According to the definition electric field strength is E =F/q, therefore, E = 2.4•10^-7/6•10^-13 = 4•10^-5 V/m
Monday, April 9, 2012 at 2:36pm by Elena
physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...
Thursday, April 26, 2012 at 6:40pm by Romy
physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...
Thursday, April 26, 2012 at 4:40pm by Romy
Physics(Please respond)
v=ω•R, => ω=v/R, T=2π/ω
Friday, June 8, 2012 at 1:12pm by Elena
Physics Need Help PLEASE
SORRY! E = 2.4•10^-7/6•10^-13 = 4•10^+5 V/m
Monday, April 9, 2012 at 2:36pm by Elena
Physics please someone help me
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...
Thursday, April 26, 2012 at 7:53pm by Romy
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