# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 498
1. ## Calculus

If a ball is thrown into the air with a velocity ofc 40ft/s,its height in feet after t seconds is given by y=40t-16t^2. Find the velocity when t =2. Could you please show the steps

asked by Eileen on June 30, 2010
2. ## Organic Chemistry

Please help! Thank you! Alcohols can act either as weak acids or as weak bases, just as water can. Show the reaction of methyl alcohol, CH3OH, with a strong base such as Na+ -NH2

asked by Anonymous on June 29, 2015
3. ## precalc

a circle is formed with a center (-3,5) and a radius.of 4 write the circle as a pair of parametric equations. then show how you can eliminate the parameter to return to the rectangular form

asked by gggggg on April 26, 2013
4. ## math

if I buy 3 large sandwich wraps to serve at a picnic and 9 people will be at the picnic, show 3 different ways to cut the sandwiches so that each person gets an equal share

asked by amy on October 5, 2010
5. ## Chemistry

If the wavelength if determined to be 0.018 nm, at what velocity is the electron traveling? (The mass of an electron is 9.11x10^-31kg) I know the answer is 4.0x10^7 m/s, but i cannot figure how they got this. Could someone please explain it to me and show

asked by Chelsea on November 11, 2013
6. ## Debating

PLEASE HELP ME! What is a Space Program? Define. I Have a debating topic that needs me to define that. I have googled but I can't find anything. If you don't know then please show me a list of alternate search engines. Thanks Minerva

asked by Minerva Wisdom on February 27, 2009
7. ## profit&loss mathematics

A sells to B at a gain of 20%,B sells to C at a price A paid.what does B lose as a percentage? Plz show step with neat algebras i tried working it out i become angry with the question

asked by pooo on January 4, 2017
8. ## Algebra

If a computer costs an electronics dealer \$300, and she sells them for \$800, what is her rate of profit based on the selling price? I know the answer is 62.5% but could someone show me how to get this answer , thanks

asked by Mark on September 19, 2010
9. ## Pre Calculus

Determine all discontinuities that exist on the graph of y = f(x) shown below. Please show your reasoning by justifying your answer with the conditions of continuity. If there is a discontinuity, identify it as removable or non-removable.

asked by Nanda on April 5, 2012
10. ## Microeconomics

Suppose a second nation has the following data. Plot the PPC, and then determine which nation has the comparative advantage in which activity. Show whether the two nations can gain from specialization and trade.

asked by Tasha on October 17, 2010
11. ## trig

How do I dertermine the measure of theta for the equation 4cos theta - sqrt 12 = 0. My answer was 2pi/3,4pi/3 I'm told it's wrong could you please show me how to do this type of question

asked by jamie on March 17, 2010
12. ## math

The Lappans buy 3 large wraps to serve at a picnic. Nine people in all will be at the picnic. Show three different ways to cut the sandwiches so that each person gets an equal share.

asked by Anonymous on January 3, 2011
13. ## stoichiometry

if 5.00g magnesium is combined with 10.0 g of chlorine, show by calculation which substance is the limiting reactant and calculate the theoretical yield of magnesium chloride for the reaction. Someone PLEASE HELP ME!!!!

asked by Laura on September 11, 2009
14. ## Math

Perform the indicated operation by hand. Show or explain your steps. 17.525 ÷ 25? Am I supposed to move the decimal over one? If I do then the answer is 7.01, if I don't then the answer is 0.701. I am confused.

asked by Anonymous on October 17, 2009
15. ## Physics

Every glass window pane has two surfaces that reflect some light as it passes through; why doesn't interference effects show up routinely in every house window? If you could explain this I'd really appreciate it.

asked by Caleb on April 30, 2012
16. ## Precalculus

Can someone help me with this question (It's a graph) imgur dot com/r16ba One of the answers would be: x= 2 not x=-2 (If you think its an unsafe website, type in google "Imgur," it'll show you that its a site to post images)

asked by Melinda on January 12, 2012
17. ## Genetics

A male with singed bristles (sn) appeared in a culture of Drosophila. How would you determine if this unusual phenotype was due to an X-linked mutation? Can you show the crosses that you would do to determine this?

asked by Tommy on September 9, 2011
18. ## Physics

A 1 kg mass attached to a 1 m string is rolled around in a horizontal circular path with an angular velocity of 100 RPM what is the tension of the string? Please show how you got your answer.

asked by Joey on November 21, 2016
19. ## Calc

sinx+x^2y=1 use implicit differentiation to find the second derivative. For the first derivative I got (cos(x)+2xy)/x^2. I have a feeling that is wrong, can someone please help and show steps on how to do this problem. (studying for a midterm).

asked by Anonymous on June 8, 2016
20. ## Written Analysis

I still need help with my assignment. Please show me examples of short paragraphs on discrimination(modern day) and outlining how I plan to find resources and evaluate my resources for credibility.

asked by Keri Ann on October 29, 2011
21. ## responsibility terms

can you help me unscramble these? surtidbed,rolnesouc,retsetni Two of these are in this site. Type the scrambled letters and the real words will show. http://www.unscramble.net/

asked by jack on November 17, 2006
22. ## maths need help

using the interval [0,2pi] and f(x) = sinx + cosx, obtain c £ (0,2pi) that satisfies the conclusion of Rolle's theorem where £ mean element of and C means number show step

asked by dud on October 1, 2016
23. ## Social Studies

For Social Studies we have to do this project where we have to create a radio show for our topic, and my topic is baseball in the 1920's. Do you have any good websites I can try(not wikipedia, our teachers don't like us using that)

asked by Emily on February 26, 2008
24. ## chemistry

a copper sample has a mass of 44.65 g and a volume of 5.0cm^3. what is the density of copper, expressed as gram per cubic centimeter? can you please write the formula then show the working? thank you really appreciate it

asked by help3 on August 27, 2012
25. ## chemistry

Why do alcohols that show little tendency to dissolve in water appear to dissolve readily in 85% phosphoric acid? Would you describe the latter behavior as solubility or a chemical reaction? Explain

asked by jen on March 24, 2018
26. ## Math

Ryan brought a red milk snake to show during science class. Then snake is 56 centimeters long. Find its length to the nearest whole inch.

asked by Losa on October 24, 2012
27. ## Organic Chemistry

Predict the products Decane + O2 + heat ----->? Show the complete mechanism for each of the following conversions: a) 1-cyclopentene KOH, CHCl3 -----> /\\/Cl l_l/\Cl b) 1-methylcyclopentane Br2 + Heat ------>

asked by Katelynn on October 7, 2010
28. ## chemistry

statement that is wrong about transition elements is 1) they have fixed oxidation states 2) they show paramagnetic behavior 3) they form interstitial compounds 4) they form complexes

asked by marjani on August 2, 2011
29. ## math 11

An asymmetrical roof has measurements show in the diagram below. if the vertical supports are each two feet apart, calculate the measure of angle G and the slant heights (lengths x and y) of the roof.

asked by Priya on October 20, 2014
30. ## math

Of the last 88 contestants on a game show, 32 won a prize. What is the experimental probability that the next contestant will win a prize? Simplify your answer and write it as a fraction or whole number

asked by Anonymous on March 8, 2016
31. ## chemistry

Methane burns in air to give carbon dioxide and water. Give a chemical equation . Show(State ) how the mixtures of these gases can be separated

asked by clive on May 5, 2015
32. ## Calculus

Show that the maximum profit occurs when the marginal revenue equals the marginal cost. I'm pretty sure this is supposed to be some sort of proof, but I have no idea how to even start it...

asked by Lindsay on December 11, 2013
33. ## Math

You have a 5/16 in. drill bit. Will it drill a hole large enough to fit a 5 mm bolt? Show two different ways to answer this question. Explain your thinking. I couldn't even figure out the first way. Please help!

asked by Whitney on October 6, 2014
34. ## physics

you see lightning and then count 4 seconds till you hear the thunder. From this you conclude that the lightning strike occurred_______ a. 1400m away b. 700m away c. none of the above Can you please show me how to figure out how to get the answer?

asked by Josh on May 1, 2011
35. ## math

Two trucks are traveling in the same direction, one going twice as fast as the other. At the end of 6 hours they are 204 miles apart. How fast is each travelling? Can you guys show me the answer i got 68 and 146 but its wrong

asked by allie on January 5, 2017
36. ## English

which of the following should you not do in the close of a job interview? A. give a final explanation for a weakness that you have. B. show enthusiasm for the job. C. summarize your accomplishments and strengths. D. smile and relax

asked by Donna on October 10, 2011

Show that the maximum profit occurs when the marginal revenue equals the marginal cost. I'm pretty sure this is supposed to be some sort of proof, but I have no idea how to even start it...

asked by Lindsay on December 12, 2013
38. ## math

Jimmy is traveling at a speed of 135 miles per hour (mph). What is his speed in feet per second? Include units in the calculation to show the unit conversion.

asked by Sam on September 3, 2010
39. ## Statistics

a new restaurant with 149 seats is being planned. Studies show that 61% of the customers demand a smoke-free area. How many seats should be in the non-smoking are in order to be very sure of having enough seating there?

asked by Nicoleta on May 30, 2015
40. ## chemistry

61.8g of A combines with 80g of B.30.9g of A combines with 106.5g of C, B and C combine to form compound CB2.atomic weight of C and B are respectively 35.5 and 66.6.show that the law of reciprocal proportion is obeyed.

asked by Animesh swain on May 6, 2018
41. ## Calculus I

Suppose that f and g are two functions both continuous on the interval [a, b], and such that f(a) = g(b) = p and f(b) = g(a) = q where p does not equal to q. Sketch typical graphs of two such functions . Then apply the intermediate value theorem to the

asked by Kaiden on September 18, 2011
42. ## Physics

A 0.35 m2 coil with 50 turns produces a maximum emf of 45 volts in a magnetic field of 0.4 Tesla. What is the speed of rotation of the coil? Can you show the steps too so I can understand? Thanks

asked by Anonymous on January 28, 2013
43. ## Physics

A motorcycle with an initial velocity of 7.99x10^0 m/s accelerates for a total of 3.3x10^0 seconds at a rate of 1.51x10^0 m/s2. What is it's velocity, to two significant figures? can anyone show the calculations for this

asked by dylan on October 13, 2010
44. ## math

if I buy 3 large sandwich wraps to serve at a picnic and 9 people will be at the picnic, show 3 different ways to cut the sandwiches so that each person gets an equal share

asked by amy on October 5, 2010
45. ## Calculus

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x), y=5, and 2y+3x=6 I tried this many times and i am getting it wrong. Please show me how you got to the answer.

asked by John on January 25, 2011
46. ## Trig help?

The question is: State the vertical shift and the equation of the midline for y = 4cosθ-1? I have NO idea what to do here. Can someone possibly show me step by step? I am more of a visual learner, if I see something done I can usually understand it.

asked by Kay on February 3, 2009
47. ## maths

in the binomial expansion of (1+x/k)^n, where k is a constant and n is a positive integer, the coefficients of x and x^2 are equal. (a) show that 2k=n-1 (b) deduce the value of k. Hence find the 1st 3 terms in the expansion in ascending powers of x.

asked by mutinta on October 3, 2013
48. ## Don't even know what subject

1) Identify and explain two features that show how the Hyracotherium Is related to the Equus (the modern day horse). So.. My teacher wants me to do this... but gave me no resources, and we haven't touched this topic and never will the entire school year...

asked by omfg on December 2, 2015
49. ## math

f(X)= (x^2)/(x^2 - 1) .find the symmetry , intercepts, asymptotes, interval of increase and decrease, local extreme values, concavity, point of deflection and draw the graph of the function.kindly show the working.

asked by kanza on November 5, 2015
50. ## math

On a graph paper draw a rough sketch of the straight lines whose equation are x-y=2 and x+y=1.Estimate the point at which they meet .check your result by solving the two equations simultaneously.(show the drawing and checking)

asked by macpherson emily on September 7, 2015
51. ## science

What mass of protons would be required to just neutralize the charge of 1.7 g of electrons? I thought it was simple because 1 proton maxes out 1 electron but my teacher started talking abou this complicated way of doing it and i didn't get it :( can

asked by Lily on September 21, 2010
52. ## psychology

Cross-cultural data find that when racial gaps exist in other cultures, it is the _____________________ groups that typically show lower scores. a) economically disadvantaged b) minority c) majority d) linguistically different

asked by allee on November 16, 2012
53. ## math

what is the maximum amount of money you can win on the game show jeopardy in any one night? Note that the dollar amounts in each category are bigger than they used to be and don't forget the daily double and the bonus round.

asked by nik on August 21, 2008

In end of term tests Zanna got the following marks mathematics 54/75 history 27/40 geography 39/50 english 48/60 french 25/40 art 15/20 what was her best subject her 2nd best her 3rd her 4th her 5th her 6th please show workings

asked by montana on June 26, 2009
55. ## space

Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? Show proof of

asked by Anonymous on June 13, 2013
56. ## science

Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? Show proof of

asked by Lisa on April 18, 2019
57. ## BIO

heres the question, I totally don't understand it: a few sex linked ttraits in humans are located on the Y chromosome and are dominant. What pattern of inheritence would uou expect to see in these traits? show your exmaplantion.

asked by Lena on October 22, 2008
58. ## Art History

Which of the following did the development of linear perspective allow artists to do? A show human anatomy B print three-dimensional images on a flat surface C create more exact technical drawings D build domes with precise

asked by Ya Boi on March 22, 2019
59. ## us hist

Between the election of 1860 and his inauguration, Abraham Lincoln A) contacted Jefferson Davis several times. B) worked very closely with President Buchanan. C) made serious attempts to reassure the South. D) did not show much leadership I think it's C?

asked by joe on November 28, 2013

Hi, I'm suppose to be doing an essay on To Kill A mockingBird. On my intro paragraph, my last sentence has to be 'explicitly stated plan' , is this right? "I will provide evidence from the novel which show that the three characters mentioned above, fulfill

asked by May on April 27, 2008
61. ## Chemistry

@DrBob222 I got the last question that I posted wrong and I solved it the same way. Could you show me the answer and how you got it? My test is Friday and this is a practice problem. Suppose that 30 mL of 0.5 M CsOH and 55 mL of 0.1 M NaHS are mixed. What

asked by Sarah on March 29, 2016
62. ## Social Studies.

Look at the map. Which ecosystems show where early civilizations developed because the area allowed people to grow crops even during times with little rainfall? Select all that apply. -Desert -RainForest -Savanna -sahel

63. ## Math

Perform the indicated operations and reduce all results to lowest terms. Assume the variables are restricted to values that prevent division by 0. (x^2-y^2)/(x^2-2xy+y^2) divided by (3x+3y)/(7x-21) Could someone please show me how to do this so I can do

64. ## math

i am in the 6th and learning but stuck on this big one. NANCY IS GOING ON A TRIP THAT COST 4800.00 PLUS 216. FOR TAX SHE IS DEPOSITING 1200. SHE WILL PAY IT OFF IN 24MONTHS WHAT ARE HER PAYMENTS? i KNOW THE ANSWER BUT DO NOT KNOW HOW TO WRITE IT AS AN

asked by polly on November 19, 2008
65. ## time periods

can someone help me connect thesetogether. Napoleon/Romanticism Industrial Revoluiton Nationalism Imperliasm WWI Russian Revolution/Communist Russsia WWII The Cold war I need to show some connections between the events

asked by kelly on January 20, 2008
66. ## Physics

Consider a situation where immediately after birth, twins are separated. One continues to live on earth, while the other is whisked away in a space ship at 90% of the speed of light. After 65 years they are reunited. Will they look the same? Show proof of

asked by Brian on May 10, 2015
67. ## math

lily left house at 11.43 am and travelled to town, a distance of 31km. She arrived there at 12.09pm. What was the average speed in km/h and m/s.[ans:71.54 km/h & 19.87 m/s] my answer is ~31/1.1=28.18 km/h ~31000/3960=7.83 m/s can some1 show me the

asked by susan on July 22, 2011
68. ## Math

Could somebody please help me with a few Math questions? 1. Provide an appropriate response. True or False? 100.567 is between 10 and 100. 2. Use an annual percentage rate table to solve the problem. A family purchased a new ski boat for \$20,000. The loan

asked by Felicity on March 26, 2014

Choose the words or phrases that most accurately complete the sentences below. One of the most effective measures that a government can undertake to reduce cardiovascular disease is to ………………..Individuals can also decrease their own risk of

asked by john!!!!!!!!!!!!!!!!!!!!!!!!!!!! on November 9, 2013
70. ## Science need help

Choose the words or phrases that most accurately complete the sentences below. One of the most effective measures that a government can undertake to reduce cardiovascular disease is to ………………..Individuals can also decrease their own risk of

asked by john!!!!!!!!!!!!!!!!!!!!!!!!!!!! on November 15, 2013
71. ## Maths

Jason’s credit card’s beginning unpaid balance for August is \$2,000. During the August billing cycle he made a payment of \$200 and used card to purchase \$50 worth of grocery. Credit card charges 24% annual percentage rate and uses the unpaid balance

asked by Prince on September 20, 2011
72. ## English expression

Playing the dice game, write down suitable responses and have a conversation. (They work in pairs playing the dice game. However, they use just one die.) You work in pairs. One student should throw the die. If it has one, he should move forward one step.

asked by John on March 11, 2008
73. ## English

I forgot to include the following sentences. Thank you very much. 1)Ding believes that global warming comes from different parts of the world,including poorer countries. He claims that the only way to improve the situation is for rich and poor countries to

asked by Henry2 on November 27, 2011
74. ## Biology

Compare the functions of a normal cell and that of a cancer cell with regards to cell division. Discuss the cell cycle control system and checkpoints and how these might be altered in a cancer cell.

asked by Mai on November 5, 2007
75. ## HCA 240

Write a 150- to 200-word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the risk factors for: arthritis, osteoporosis, injuries from falls. Incorporate prevention strategies such as: proper nutrition (calcium,

asked by Tasha on August 14, 2008
76. ## information and technology

c) Describe each of the computer specifications listed below i. Intel Core 2 Duo T6670 (2.2GHz,2MB L2 cache) ii. 15.6 HD Anti-Glare (1366x768) iii. 2 GB DDR3 1066 MHz 1DIMM iv. 320 GB 7200RPM v. DVD+/- RW vi. Loaded Operating system Windows 7 vii. Wireless

asked by George on September 6, 2016
77. ## microeconomics

1. Suppose that an increase in the price of carrots from \$1.20 to \$1.40 per pound raises the amount of carrots that carrot farmers produce from 1.2 million pounds to 1.6 million pounds. Using the midpoint method, what would be the elasticity of supply? a.

asked by sarah on February 13, 2013
78. ## physics

Two forces are applied to a tree stump to pull it out of the ground. Force A has a magnitude of 2880 newtons (N) and points 42.0 ° south of east, while force B has a magnitude of 4360 N and points due south. Using the component method, find the (a)

asked by Shant on September 5, 2014
79. ## Pre Calc

A plumber charges \$40 per hour for labor with a minimum labor charge of \$30. For example, if she does her repairs in only 0.2 hours, then \$40*0.2=\$8, which is less than the minimum, so she would charge \$30 for labor. We will assume she can repair any

Today, many organizations and managers face new challenges every day. One critical aspect of the challenges that managers lack is within the planning stage. You have been asked by your manager to conduct a preliminary search of recommending the two most

asked by Anonymous on April 5, 2010
81. ## College Math

A temperature of 38 degrees Fahrenheit (F) is equivalent to 276.483 degrees Kelvin (K), while a temperature of 75 degrees F is equivalent to 297.039 degrees K. (a) Using the algebra methods from this class, find the equation converting Kelvin temperature

asked by Richard D on October 19, 2012
82. ## phy

Find the center of mass of the three mass system that m1 = 1.90 kg and m2 = 1.30 kg. Specify relative to the center of the left hand (1.00 kg) mass.

asked by ami on October 7, 2010
83. ## Physics

An explorer in the dense jungles of equatorial Africa leaves his hut. He takes 43 steps at an angle 45north of east, then 80 steps at an angle 60 north of west, then 51 steps due south. Assume his steps all have equal length. Save him from becoming

asked by Allison on April 7, 2011
84. ## Physics

A device consists of eight balls each of mass 0.4 kg attached to the ends of low-mass spokes of length 1.8 m, so the radius of rotation of the balls is 0.9 m. The device is mounted in the vertical plane. The axle is held up by supports that are not shown,

asked by Emily on April 14, 2013
85. ## Physics

Which of the following forces does NOT have a zero work done on the object: a)The normal force on a box that slides across a horizontal level floor. b)The weight on a box that slides across a horizontal level floor. c)The normal force on a box that slides

asked by Nikita on November 10, 2009
86. ## Probability and statistics

There is an equally likely chance that a falling dart will land anywhere on the rug below. The following system is used to find the number of points the player wins. What is the expected value for the number of points won?Black = 40 points Gray = 20 points

asked by Rosmery on September 18, 2012
87. ## Math

Hi, how would we solve a problem like this? The path of the ball for many golf shots can be modelled by a quadratic function. The path of a golf ball hit at an agle of about 10 degrees to the horizontal can be modelled by the function : h= -0.002d^2+0.4d

asked by Mark on May 25, 2007
88. ## Social Studies

HELP MS. SUE!!! 1. Nearly every village in mexico has a church and a market. The city's public square where the market is held is called a a. quatro b. plaza c. casa. d. squatter.** 2. To what country does Mexico export the most goods? a. Germany b. Canada

asked by Amanda on April 3, 2015
89. ## math

A company that makes thing-a-ma-bobs has a start up cost of \$ 1399. It costs the company \$ 1.87 to make each thing-a-ma-bob. The company charges \$ 5.89 for each thing-a-ma-bob. Let x denote the number of thing-a-ma-bobs produced. 1. Write the cost function

asked by Completely lost?! on September 11, 2009
90. ## Calculus

Evaluate the indefinite integral: 8x-x^2. I got this but I the homework system says its wrong:sqrt((-x-8)x)/(2*sqrt(x-8)*sqrt(x))*(((sqrt(x-8)*(x-4)*sqrt(x))-32*log(sqrt(x-8)+sqrt(x))

asked by Shannon on February 13, 2009
91. ## Math

Could someone simplify this? (3a)(3a)^3 The "^" is an exponent, so it means "cubed" or "to the third power" in this case. its means to the third power I know that. -_- I need to simplify that monomial. (3a)(3a)^3 (3a)(3a)^3 = (3a)^4 = (3^4)*(a)^4 = 81a^4

asked by Elton on November 15, 2006
92. ## Science

2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What

asked by Tila strong on September 20, 2016
93. ## Science

2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What

asked by Lily p on September 21, 2016
94. ## Social Studies

How was Chinese influence spread in Korea during the period of the three kingdoms? A. through the travels of Chinese Buddhist monks B. through military conquest C. through the introduction of Chinese art and technology D. through the Chinese writing system

asked by Fusion on October 12, 2018
95. ## math

Which is the idependent variable in the following situation?: A marine biologist wants to track the miles that a particular dolphin travels over the course of a year. The tracking system records the distance each week. A. length of dolphin. B. number of

asked by austin on February 26, 2007
96. ## physics

two blocks are connected by a string. the smooth incline surface makes an angle of 42 degrees with the horizontal, andthe block on the incline has a mass of 6.7 kg. find the mass of the hanging block that will cause the system to be in equilibrium. (the

asked by stephanie on November 3, 2010
97. ## Social Studies

which of the following is the best description of a reason the Soviet Union collapsed ? A) Development of the Strategic Defense Initiative * B) The stars wars defense system was successful C) Gorbachev allowed political parties other than his own D) A

asked by Help Ms Sue on April 29, 2017
98. ## Physics

A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what

asked by Joel on February 2, 2011
99. ## phy

A 0.5kg piece of metal (c = 600/kgK) at 300 degree celcius is dumped into a large pool of water at 20 degrees celcius. Assuming the change in temperature of water to be negligible, calculate the overall change in entropy for the system

asked by christ on January 24, 2013
100. ## Physics

A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what

asked by Joel on February 2, 2011