Search: Physics I'm so Lost!!

Number of results: 98,414

Physics
Figure the energy lost in the spring: energy lost to friction: 1/2k(.05^2-.023^2) Now the block moved 7.3cm, or .073m. energy lost to fricion= mu*mg*.073 solve for mu.
Wednesday, November 18, 2009 at 11:20am by bobpursley

Chemistry
Your plight reminds me of this old proverb: "For Want of a Nail For want of a nail the shoe was lost. For want of a shoe the horse was lost. For want of a horse the rider was lost. For want of a rider the message was lost. For want of a message the battle was lost. For ...
Saturday, April 7, 2012 at 6:01pm by Ms. Sue

Physics
Pe lost = m g h Ke gained = (1/2) m v^2 Pe lost - Ke gained = energy lost to friction
Thursday, December 8, 2011 at 4:05pm by Damon

Lost in Physics
The strength of an electric field at 5.0 cm from a point charge is 100.0 N/C. What is the magnitude of the source charge? Show work so I understand how to do it. E=kQ/r^2 solve for Q, you have r, E What do I do NOW? I am lost
Saturday, May 19, 2012 at 3:10pm by Pat

Physics
that is simple. energy is never lost so energy lost by microwave=energy gain by ice cube 32200=105t t=306.6667secs
Tuesday, March 16, 2010 at 12:09pm by Aanu

Chemistry
Is heat lost in heating water and ice? No. Entropy is lost, but heat energy is not lost.
Sunday, December 3, 2006 at 4:28pm by Lisa

math
On each of four consecutive plays in a football game, a team lost 11 yd. If lost yardage is interpreted as a negative integer, write the information as a product of integers and determine the total number of yards lost.
Tuesday, March 16, 2010 at 2:28am by kirk

Physics
1. Because it had lost its horizontal velocity it will crash into the Earth. 2. It requires the momentum lost by the other half so possesses a greater velocity, which will cause it to move into a higher orbit.
Wednesday, October 20, 2010 at 9:34am by Felecia

Physics
Im lost is there anyway you can solve this question for me? I know I should try by myself but I get ridiculous answers that defently do not make sense. I know how to solve for Wf which is .5235 and Wi .314159 but then Im lost
Monday, December 21, 2009 at 7:50pm by Victor

English
Would it be : The characters in the sun also rises are experiencing the negative after effects of war thus leaving them to be the lost generation....wait are they considered the lost generation or an example of the lost generation? im not sure
Thursday, November 19, 2009 at 12:45pm by Jake

Physics
To clarify, KE of the marble is lost through heat for eg. due to this collision being inelastic. If KE of the marble is lost, then how does u(marble) = v(marble)?
Saturday, November 27, 2010 at 5:11am by Cheesecake

Math
In 2000 17 million workdays were lost due to strikes and labor disputes. In 2001 there were only 1 1/5 million days lost. How many more workdays were lost in 2000? 15 4/5?
Tuesday, October 30, 2012 at 6:44pm by Jerald

English
How would you paraphrase this aphorism? A little neglect may breed mischief,for want of a nail the shoe was lost,for want of a shoe the horse was losted,for want of a horse the rider was lost, for want of the rider the battle was lost.
Sunday, September 23, 2007 at 10:38pm by jen

pre-algebra
A football team gained 4 yd, lost 2 yd, gained 11yd, lost 8 yd, and then lost 9 yd. Find the net gain or loss.
Sunday, September 16, 2012 at 4:23pm by emily

physics
heat lost by ice=MLf =22*3.34*10^5 J =7348000 J since heat gained =heat lost 7348000 joules of heat energy is absorbed by the ice box.
Saturday, November 20, 2010 at 10:06am by sanjeet

statistics
Lost Luggage in Airlines Transportation officials reported that 8.25 out of every 1000 airline passengers lost luggage during their travels last year. If we randomly select 400 airline passengers, what is the probability that 5 lost some luggage?
Saturday, March 31, 2012 at 4:42am by lela

physics
not quite any energy lost to friction or air resistance would prevent it from having enough energy to make it back to the same height (unless it started with a big push) If not moving at start, total energy = potential energy = m g h if any energy is lost during the trip, it ...
Sunday, January 29, 2012 at 7:15pm by Damon

physics
Use the spring compression to compute the kinetic energy when it hits the spring. (1/2)MC^2 = (1/2) kX^2 Use that energy to figure out how much energy is lost while traveling from B to C. Potential energy loss = kinetic energy gain + frictional work I suspect you will need ...
Sunday, March 1, 2009 at 10:26pm by drwls

Physics please help
find the resultant velocity with the conservation of momentum m1*vo=(m1+m2)V solve for V determine finalKE, and initial KE, and the fracation. the difference between final and initial KE is lost ke, the fraction would be that amount lost divided by initial
Friday, April 8, 2011 at 10:33pm by bobpursley

math
Reiny I'm still lost i only got so far. f(2)=2(2)^2-4(2) =2(2) from their on i'm lost please help
Monday, July 20, 2009 at 11:56pm by connie

Physics-Totally lost
I'm totally lost on this one- the earth is surrounded by an electric field with a strenth of 100 N/C at the surface. Its electric properties are the same as a point charge located at its center. How would the gravatational force and electrical force compare foor an ...
Thursday, April 7, 2011 at 11:03am by Rafaela

Help me! Physics
Heat gained by aluminum equals heat lost by copper. Let T be the final equilibrium temperature of both. The heat gain of each metal is Q = M*C*(T2 - T1). It heat is lost, that number is negative 2.6*0.22*(T-13) = 10.2*0.093*(93-T) Solve for T. 0.572T - 7.436 = 88.22 - 0.9486 T...
Thursday, January 17, 2013 at 7:10pm by drwls

English
lost of trust = loss of trust lost of productivity = loss of productivity employee that he/she is causing (singular) lost of tim = loss of time I don't understand this statement: "Liabilities that fall on the employee doing the snitching are trust. " (liabilities...
Tuesday, November 9, 2010 at 10:19pm by SraJMcGin

AP CHEM
You have the mass of the water to be frozen, figure the heat lost to convert it to ice at -5C. You will have to watch units, on the heat of fusion, convert that to J/g. Then, the heat lost has to equal the heat gained, or Massfreon*Heatvap= heat lost
Wednesday, January 2, 2008 at 9:12pm by bobpursley

English/grammar
Semicolon. 2a. The Bears lost the Super Bowl to Indianapolis; worse yet, I lost a bet with my brother about the outcome of the game. 2b. The Bears lost the Superbowl to Indianapolia; worse yet; I lost a bet with my brother about the outcome of the game. Which is correct for ...
Sunday, November 30, 2008 at 9:00pm by Dorothy

Chem - Im lost
Too easy to be lost. (P1V1/T1) = (P2V2/T2) Remember T must be in kelvin.
Thursday, July 5, 2012 at 5:33pm by DrBob222

Written Communication
What kinds of unwanted reactions might you get from readers of your messages? What steps would you take to ensure that the purpose of your message (whether informative, negative, or persuasive) is conveyed to your readers? It's extremely important to express yourself ...
Saturday, April 21, 2007 at 8:41pm by Frankie

equation
n represent the number of games lost, write an equation for: a) A team won three times as many games as it lost. It played a total of 52 years. b) A team won 20 games more than it lost. It played a total of 84 games. c) A team won 15 games less than twice the number lost. It ...
Friday, January 18, 2008 at 9:04am by jen

algebra
-2/5 x=6/35 could the answer be - 15/14????? solve using the multiplication principle, so lost to even figure it out
Sunday, January 30, 2011 at 8:41pm by so lost

Math
1. There are 32 hours between noon on Monday and 8 pm on Tuesday. 2. Since the clock lost 128 seconds in these 32 hours, you can divide 128 by 32 to find out how how many seconds it lost in one hour. 128 divided by 32 is 4. 3. If the clock lost 4 seconds in an hour, then it ...
Thursday, March 22, 2012 at 12:50am by 420RIP

Physics
You need to throw the dang formulas away and learn physics. I suggest go thru the exercise problems in your text. You are, in fact, lost.
Monday, May 11, 2009 at 7:59pm by bobpursley

physics
With no air friction, it should rise to an altitude H such that M g H = (1/2) M Vo^2 H = Vo^2/(2g) = 42.9 m If it rises to only 7.70 m, 82.05% of the initial kinetic energy is lost due to air friction. That is a lot. The average friction force is energy lost (in Joules) ...
Wednesday, April 6, 2011 at 12:46pm by drwls

Physics
A basketball of mass 0.70 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.64 m. How much mechanical energy was lost during the collision with the floor? A basketball player dribbles the ball from a height of 1.22 m by exerting a constant downward ...
Tuesday, November 27, 2012 at 10:04pm by Physics

physics
power = voltage * current P = V * i 1.3*10^6 = 1.100 *10^3 i i = (1.3/1.1) * 10^3 = 1.182 * 10^3 amps (heavens!) R = 14 km * 5*10^-2 ohms R = 7 * 10^-1 ohms Power lost = V i = (i R) i = i^2 R = 9.777 *10^5 watts (most of our power lost in transmission :( ) b. Mr Westinghouse ...
Wednesday, February 20, 2008 at 9:06pm by Damon

Physics
energy gained=mg(75/sin22) energy lost= mg*mu*cos22*75 so, final ke=energygained-energy lost solve for vf. b. mg*mu*distance=finalKE solve fordistance.
Wednesday, February 23, 2011 at 9:00pm by bobpursley

Physics
I am lost on it
Sunday, September 11, 2011 at 5:27pm by Milan

Physics-Please help!
I don't want someone to do this for me-I'm just totally lost and don't even know where to start-I'm totally lost on this one- the earth is surrounded by an electric field with a strenth of 100 N/C at the surface. Its electric properties are the same as a point ...
Thursday, April 7, 2011 at 3:31pm by Rafaela

physics
A)When the energy input to gas fired power station is 1000MJ,the electrical energy output is 300MJ.What is the efficiency of the power station in changing the energy in gas into electrical energy b)what form does the 700MJ of lost energy take c)what is the fate of the lost energy
Wednesday, August 3, 2011 at 4:58am by Luc

Physics
The ring lost 0.62 g in 50 years. That is 0.62/197 = 3.15*10^-3 moles. Multiply by Avogadro's number for the number of atoms lost: 1.90*10^21. Next, divide that by 50 years, in seconds. I get about 3*10^13 atoms/second
Thursday, August 23, 2012 at 7:10am by drwls

physics
The increased (and total) kinetic energy equals the lost potential emergy. If block B has fallen 0.27 m vertically, block A has moved up the incline for an altitude change of 0.27 sin 26 = 0.1184 m Total P.E. lost = 2.7*9.8*0.27 - 1.3*9.8*0.1184 = 7.14 - 1.51 J = 5.63 J That ...
Monday, March 23, 2009 at 5:21am by Reading_Sucks

physics
Your question is lost to me.
Thursday, November 1, 2012 at 9:54pm by bobpursley

MATH
7. Tina lost 3 pounds on the first week of her diet. She gained a pound on the second week, and then lost 2 pounds a week during every week afterwards. She has been dieting for a total of 13 weeks. How many pounds has Tina lost in all? A. 26 pounds B. 24 pounds C. 22 pounds D...
Wednesday, May 15, 2013 at 11:49pm by lola

math
Jose was playing a game with marbles.In the first round ,he lost 1/4 of his marbles.In the Second round,he lost 1/3 of his remaining marbles.In the third round,he lost 1/2 of his remaining marbles.He gave 1 marbles to his friend shavana.He had 1 marble left. How many marbles ...
Saturday, March 3, 2012 at 3:33am by Adi

physics
If they stuck together, it is correct. Perfectly inelastic is without meaning, inelastic would have been enough, however, it should have stated the masses were stuck. KE lost is 33.7J. I would say KE lost is 33.7J, and forget the negative sign.
Wednesday, October 24, 2007 at 4:55pm by bobpursley

physics
Wow thank you. I was really lost.
Thursday, November 29, 2012 at 4:35pm by michelle

Physics
Help!I'm really lost on this one.
Monday, April 6, 2009 at 4:10pm by KC

Math
I am totally lost on this problem. Here is my new answers but I am sure that they are wrong. Part A; a. 1/2 b. 1/2 c. 1/3 d. 1/4 e. 1/3 f. 1/4 g. 1/3 Part B I am really lost on. Thanks for your help.
Friday, July 10, 2009 at 2:22pm by B.B.

English
1. I lost the ring that he gave me. 2. I lost the ring that he had given me. (Which one is correct? Are both OK?)
Thursday, April 12, 2012 at 10:33pm by rfvv

english
I am looking for the correct sentence use of the Semicolon 20a. The Bears lost the Super Bowl to Indianapolis; worse yet, I lost a bet with my brother about the outcome of the game. 20b. The Bears lost the Super Bowl to Indianapolis; worse yet; I lost a bet with my brother ...
Tuesday, October 20, 2009 at 1:10am by Leesa

Physics Please help
a. average force did the target exert on the arrow Work done = force * distance = energy lost Initial kinetic energy = (1/2)mv² work done = F*d Equating energy lost to work done F*d = (1/2)mv² F=d*mv*sup2;/2 b) What do you know about Newton's third law?
Saturday, September 25, 2010 at 11:14pm by MathMate

Algebra1
20% (1/5) survived. 80% (4/5) were lost. The number of surviving trees was (1/5)/(4/5) = 1/4 of the number lost. Divide 10,800 by 4 for the answer
Saturday, February 7, 2009 at 8:25am by drwls

physics
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

science
can energy be lost or does it transfer somewhere else? I thought energy can be lost but i'm just checking.
Monday, May 30, 2011 at 4:34pm by Anonymous

ALGEBRA
Thank you once again Sue life saver Amilia not sure if your question was directed towards me but I'm lost on that question right now.
Wednesday, January 19, 2011 at 10:27am by So Lost

Physics-potential energy
I still lost.
Wednesday, November 3, 2010 at 3:25pm by Kristy

Physics
PEintrampoline=PE gravity lost
Friday, November 6, 2009 at 10:19am by bobpursley

physics
a. how do i encorporate the 3000J of lost energy?
Saturday, January 31, 2009 at 10:52am by april

I am soooo lost in physics
I love you drwls!
Monday, September 10, 2007 at 12:04am by Kristen

Reading
i think taht they lost the battle because when it said "while the horse and the hero fell", i knew tehy had lost the battle it that right
Tuesday, March 13, 2012 at 6:23pm by Taylor

Chemistry
Table? Oxidized means lost electrons. Didn't Al start at oxidation state zero, and end at +3? It must have lost electrons.
Wednesday, March 30, 2011 at 9:45am by bobpursley

PHYSICS HELP
A disk has a moment of inertia of 3.0x10^-4 and rotates with an angular speed of 3.5 rad/sec. WHat net torque must be applied to bring it to rest in 3.0s? can some one help me out with this im lost!!!
Tuesday, November 13, 2007 at 11:18pm by PHYSICS HELP

physics
First of all, you need the mass of the object as well as the initial and final velocities. Second, the speed is increasing, so kinetic energy is increasing. Some force such as gravity must have been applied. I'd need to know how much potential energy was lost to determine ...
Wednesday, March 23, 2011 at 7:49am by drwls

Physics
you lost be. k= 12 000 N/m where are you getting 1 or 10
Friday, November 6, 2009 at 2:53pm by Rachel

Physics
could you please explain what to do?? cuz im lost....
Thursday, November 5, 2009 at 8:09pm by Letisha

Physics check
energy, therefore mass (E = m c^2), was lost
Friday, April 25, 2008 at 8:20pm by Damon

Recent History
So much of our world depended upon computers in 2000 that if they had failed, businesses would have lost millions (billions?) of dollars retrieving lost data.
Monday, January 5, 2009 at 7:59pm by Ms. Sue

Algebra
the problem is to graph 3x - y < 2 x + y > 2 my solution is y = 3x - 2, y = -1x + 2 I,m lost at where my lines ar drawn. In y = 3x - 2 (y line is 3) and y = -1x +2 (y line is -1) or am I totaly lost. After continued effort I beleive 1st equation m = 3 and y-...
Sunday, May 27, 2007 at 4:57pm by Sissy

history
How were the various countries of the world affected economically by WWII? Who came out ahead? Which countries suffered monetarily? Who lost their empires? Who lost the most in human capital?
Thursday, November 6, 2008 at 8:08pm by Candy

physics
I am lost on the numbers to plug into this one please help
Saturday, March 24, 2012 at 3:30pm by jim

Physics
I'm so glad I'm not the only one lost in VASTS. What a relief!
Wednesday, December 28, 2011 at 10:59pm by Kayla

physics
i cant get part b!!!!!!! im completely lost >.<
Tuesday, November 2, 2010 at 7:33pm by billy

college physics
Ok but thats where I'm lost at I dont know how to solve for time or where to start
Wednesday, September 22, 2010 at 9:47pm by Amy

physics
what the *beep* is going on with thie question? I'm seriously lost at this point ....
Monday, March 29, 2010 at 8:31pm by hi

Health Physics
When work is done by friction, in what form in energy "lost"?
Friday, January 22, 2010 at 7:37pm by Shannon

Science-Physics
I am still lost...a little more help please!
Tuesday, October 9, 2007 at 7:46pm by Jill

History
Very few men lost their jobs then. The women who lost their jobs, replaced by the returning military personnel, returned home, kept house, and raised families.
Wednesday, July 29, 2009 at 5:04pm by Ms. Sue

Math
I agree with your answer of -4. 12 yards lost and 8 yards gained sure looks like 4 yards lost.
Wednesday, January 27, 2010 at 1:04pm by Ms. Sue

spanish
assignment Escribe las frases en espanol. 1. We forgot the homework. ( literalmente: "The homeowrk was forgotten "on us") _____________________ 2. You lost money. ( the money was lost "on you") ______________________ I AM VERY CONFUSED
Saturday, November 1, 2008 at 10:37pm by sam

physic
In a house the temperature at the surface of a window is 25 ¡ãC. The temperature outside at the window surface is 5.0 ¡ãC. Heat is lost through the window via conduction, and the heat lost per second has a certain value. The temperature outside begins...
Wednesday, March 31, 2010 at 11:28pm by firous

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
I have no clue how to do this. I can draw two triangles but than im lost
Saturday, October 4, 2008 at 11:41am by Christin

physics
Is it possible for a collision to occur in which all of the kinetic energy is lost?
Thursday, November 8, 2007 at 12:43am by Anonymous

physics
A 1 kg mass moving to the right at a speed of 10m/s collides head-on in a perfectly inelastic collision with a stationary 2kg mass. How much KE is lost during the collision? First I found V_f to be 3.3m/s then I found KE_i=1/2m_1v_1i^2 +1/2 m2V_2i^2 =1/2(1)(10)^2 +1/2(2)(0)^2...
Wednesday, October 24, 2007 at 4:55pm by Tammy

physics
A generating station is producing 1.2 x 106 W of power that is to be sent to a small town located 4.2 km away. Each of the two wires that comprise the transmission line has a resistance per length of 5.0 x 10-2/km. (a) Find the power lost in heating the wires if the power is ...
Thursday, October 20, 2011 at 3:58pm by shaknocka lewis

physics
Wo = sqrt(k/m) 2 pi * 1.5 = Wo = 9.42 radians/s so 9.42 = sqrt (k/(1190+4*73.5) ) 88.8 = k/1484 k = 131,780 Newtons/meter newtons lost = 4 * 73.5 * 9.81 = weight (not mass) of people newtons lost = 2884 Newtons elongation = F/k = 2884/131,780 = .022 meters = 2.2 centimeters, ...
Monday, October 4, 2010 at 3:35pm by Damon

math
Customers lose their bags 8% of the time at airports. 20 random people were watched to see if their bags were lost. Whats the probability that at least 18 of them lost their bags?
Tuesday, December 14, 2010 at 11:05pm by Carly

Biomass increase !
Can anyone help please, Can anyone help me to calculate the increase in biomass in each of the three groups, Field mice Ingested 107Kj m-2 y-1 and lost 105 kj m-2 y-1 in respiration & faeces Grasshoppers ingested 444 kj and lost 374.3 kj and small birds ate seeds 60 kj and...
Saturday, December 30, 2006 at 10:38am by Freddo

physics
no i just need help i am completely lost in physics class, and have no clue what he's even talking about. If any one can help explain how to get even one of them that would be great. :)
Thursday, September 27, 2012 at 8:12pm by LYNN

Physics
A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by a 93.0-kg opponent running north with a speed of 3.00 m/s. (a) Why does the tackle constitute a perfectly inelastic collision? (b) Calculate the velocity of the players immediately after the tackle. ...
Tuesday, October 4, 2011 at 12:29pm by Allie

Physics
Damon, I am so lost, could you at least give me a hint so I can show you some work?
Sunday, March 3, 2013 at 2:23pm by Tim

physics
KE lost=GPE gained 1/2 m v^2=mg(110*sin17) solve for v.
Thursday, October 18, 2012 at 6:54pm by bobpursley

Physics- Elena please help!
work done against friction = ENERGY lost That is JOULES !
Wednesday, October 10, 2012 at 12:47pm by Damon

physics
the ans of part (c) is: the fate of the lost energy is that it will make the surroundings warm
Wednesday, August 3, 2011 at 4:58am by khadijah

physics
if the initial velocity is .05 m/s and its final is 1.3 m/s then how much energy is lost to friction
Wednesday, March 23, 2011 at 7:49am by bill

physics
yes i understand A but in B it's increasing the speed at a rate (which means acceleration) of 1.45 m/s^2 and thats where i get lost
Thursday, December 2, 2010 at 11:34pm by Jack

Physics
How much heat is gained or lost when 200 grams of ice melts?
Thursday, October 28, 2010 at 8:54am by John

Physics
initial PE=FinalKE-thermalenergylost mgh=1/2mv^2-thermalenergy lost.
Monday, November 16, 2009 at 5:42pm by bobpursley

Math
A hockey team played 12 games. They won 2 more than they lost. They lost 1 more than they tied. How many games did they win, lose, and tie?
Monday, August 29, 2011 at 8:19pm by Byran

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