# A computer company gives a discount of 10 % on a new piece of software. If it makes a profit of 7%, what percent does the marked price exceed the cost price?

16,107 questions, page 107
1. ## physics

In an automatic clothes dryer, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.36 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Donna on October 11, 2013
2. ## physics

In an automatic clothes dryer, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.31 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Natasha on February 22, 2012
3. ## Chemistry

I had a lab about calorimetry where we would have a temperature probe in a calorimeter cup and then pour hot water into it to form a mixture until our graph (automatically plotted from the data that's recorded by the computer). Now for the report they ask

asked by Robert on May 30, 2012
4. ## Math

a gift store owner used 9 rolls of wrapping paper to wrap his customers' gifts last week. each roll was 58 1/3 inches long. how many gifts did he wrap if a 8 1/3 inch long piece of wrapping paper was used to wrap each gift?

asked by Nicole on October 12, 2015
5. ## Trigonometry application

I need help with this problem. am having trouble solving this. A rocket tracking station has two telescopes A and B placed 1.7 miles apart. The telescopes lock onto a rocket and transmit their angles of elevation to a computer after a rocket launch. What

asked by Loretta on October 28, 2015
6. ## help me, i dont know what im doing

Part of the pride of being an American comes from the fact that most people that want jobs have jobs. However, this is not always the case. Sometimes, as happened in 2008, the economy slows down, and jobs become harder to find or keep. Businesses make less

asked by yeehaw on February 11, 2019
7. ## statistics

A company produces batteries whose lifetimes are normally distributed with a mean of 100 hours. It is known that 90% of the batteries last at least 40 hours. (i). Estimate the standard deviation lifetime. (3 marks) (ii). What percentage of batteries will

asked by Ravi on April 26, 2013
8. ## Math

URGENT Candice and Dino operate computer repair services. For a service call, candice charges 40 and dino charges 50, in addition, they each charge an hourly rate. Candice for 35/hr and Dino for 30/hr . One day their charges of two service calls were the

asked by Danielle on September 20, 2016
9. ## math

The property restoration company puroserv is considering switching to new dehumidifiers. Their market research considering the cost of the new machines and their efficiency tells them that's them switch would give them an 80% chance of making a 20, 000

asked by Kam on March 17, 2011
10. ## part 2

These didn't want to post for some reason, let's try again, these are the questions: 1. When a company modifies its pension benefits the way General Motors did, what name do we give the added cost? How is it accounted for? 2. What does GM mean when it says

asked by Sarah on March 19, 2008
11. ## economics

When Mcdonal's corp reduced the price of its big mac by 75% if consumers also purchase french fries and a soft drink. the company was hoping the novel promotion would receive its U.S. sales growth. It didn't. within two weeks, sales had fallen. Using your

asked by Ray on May 27, 2009
12. ## Applied Calculus

For its beef stew, Betty Moore Company uses aluminum containers that have the form of right circular cylinders. Find the radius and height of a container if it has a capacity of 29 in.3 and is constructed using the least amount of metal. (Round your

asked by Jacob on April 2, 2013
13. ## Finance

A company is thinking of investing some surplus cash in 30 years \$1000 face microsoft 6% coupon bonds. It plans to pay \$925 each for 10,000 of them, now and expects to sell them for \$1025 each at the end of 5 years. Make a determination about the economic

asked by Linda on May 16, 2010
14. ## Finite Math

A company claims that for selling x thousand beanie babies the monthly revenue (in dollars) is given by: R(x)= 290x. The monthly cost function is C(x)=250x + 5,000. Find the break-even point. Put the answer in context of the problem. (This is part of a

asked by TJLawson on January 29, 2014

1. Current assets that a firm must carry even at the trough of sales are _____________, while current that fluctuate with seasonal or cyclical variations in sales are _____________.(b) a. temporary assets; permanent assets b. permanent assets; temporary

asked by sandtara on September 14, 2007
16. ## FIN

1. Current assets that a firm must carry even at the trough of sales are _____________, while current that fluctuate with seasonal or cyclical variations in sales are _____________.(b) a. temporary assets; permanent assets b. permanent assets; temporary

asked by sandtara on September 14, 2007
17. ## physics

A uranium nucleus 238 U may stay in one piece for billions of years, but sooner or later it decays into an α particle of mass 6.64×10 −27 kg and 234 Th nucleus of mass 3.88 × 10 −25 kg, and the decay process itself is extremely fast (it takes about

asked by Anonymous on January 22, 2011
18. ## Ed tech

Why is it important to protect people's intellectual property online 1. Intellectual property can be used by students to get better grades. 2.the internet can make it easier to steal people's ideas but people own those ides and have the right to keep them

asked by King on January 9, 2017
19. ## Statistics

A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the distribution is approximated by a normal curve fine the probability that the battery will last . Less than 250 hours b. Between 225 and 375

asked by Karen on April 27, 2017
20. ## Math

A company makes batteries with an average life span of 300 hours with a standard deviation of 75 hours. Assuming the distribution is approximated by a normal curve fine the probability that the battery will last . Less than 250 hours b. Between 225 and 375

asked by Rachel on November 23, 2017
21. ## Chemistry

We have to conduct a lab experiment for a photochemical reaction. We will be using a redand violet film and filter paper labeled 40W and 60W. On each piece of paper we will add 1 drop of NaCl and AgNO3 and then let it sit under a lamp to see what happens.

asked by Hannah on November 2, 2011
22. ## MATH

Hi, Please help me find: V, a, and b. Ty An open box is to be made from a flat piece of material 8 inches long and 2 inches wide by cutting equal squares of length x from the corners and folding up the sides. Write the volume V of the box as a function of

23. ## Math

An open box is to be made from a flat piece of material 9 inches long and 6 inches wide by cutting equal squares of length x from the corners and folding up the sides. Write the volume Vof the box as a function of x. Leave it as a product of factors, do

asked by Dan on January 22, 2015
24. ## College Algebra

a box with an open top is constructed from a rectangular piece of cardboard with dimensions 14 inches by 18 inches by cutting out and discarding equal squares of side x at each corner and then folding up the sides as in the figure. The cost to create such

asked by John on March 17, 2013
25. ## music

Click the link --- Leonard Bernstein. Submit in the Dropbox. Read the entire article. Write 1 paragraph (5 to 7 sentences each) summarizing the article. Write 1 paragraph. Research one musical work that Bernstein created. Using your musical knowledge

asked by ocean on April 24, 2019
26. ## Chemistry

Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal was determined to be 1000J, and the equilibrium temperature in the calorimeter was 26C. Remembering that the specific heat of

asked by Lance on June 27, 2011
27. ## Chemistry

Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal was determined to be 1000J, and the equilibrium temperature in the calorimeter was 26C. Remembering that the specific heat of

asked by Lance on June 27, 2011
28. ## chemistry

To determine the approximate mass of a small spherical shot of copper, the following experiment is performed. When 140 pieces of the shot are counted out and added to 8.6ml of water in a graduated cylinder, the total volume becomes 8.8ml . The density of

asked by tomi on September 19, 2008
29. ## Calc.

Find the area of the region bounded by the parabola y=x^2, the tangent line to this parabola at (1,1) and the x-axis. I don't really get what this question is asking. It looks like the area of right triangle to me...try the graph, and shade the area under

asked by Hebe on September 26, 2006
30. ## Geometry

A cow is tethered by a piece of rope 50 meters long to the side of a rectangular barn. The rope is fastened to a hook (on the barn) that is located 20 meters from the corner along the longest side of the barn which measures 70 meters by 20 meters. Over how

asked by Syd on March 4, 2016
31. ## Art

ONLY ANSWER IS U KNOW WHAT THE PICTURES ARE FOR LESSON 1 UNIT 2 IN ART. Choose the most appropriate method of restoration and preservation for the broken pottery vessel. 1. Use duct tape to patch the pot, then display in a case. 2. Use special glue to

asked by Anonymous on January 26, 2017
32. ## chemistry

Hii i was wondering if u cud help me solve this problem..im not sure how to start it. Calculate the delta H for the reaction of solid potassium with liquid water. If a 5.00 g piece of potassium is added to 1.00 kg of water at 24 degrees celsius what is the

asked by Anmol on November 5, 2009

Please how do i calculate this problem and enter it in a journal entry: If a company issues 10-year, 8%, \$100,000 bonds paying interest on an annual basis, at a \$5,200 premium, the annual interest expense on the bonds will be:

asked by Peaches on January 8, 2010
34. ## Managerial Economics

A company has developed the production function of Q=80L.5 K0.6 where L represents labor and K represents Capital. a. If L is increased by 2% with K unchanged, what is the resulting percentage change in output? b. Describe the nature of returns to scale

asked by Patty on August 1, 2014

How do i calculate this problem and enter it in a journal entry: If a company issues 10-year, 8%, \$100,000 bonds paying interest on an annual basis, at a \$5,200 premium, the annual interest expense on the bonds will be:

asked by Peaches on January 1, 2010
36. ## Math

A television production company charges a basic fee of \$4000 and then \$2000 per hour when filming a commercial. Write an equation in slope-intercept form relating the basic fee and per-hour charge.

asked by Angie on March 14, 2009

The term 'human resources' refers to: (A)persons available for productive and professional services (B)raw materials used in the manufacture of goods (C)materials and goods made by human beings (D)capital invested by shareholders in company

asked by Sasha on April 3, 2011
38. ## Economics

Hey! I'm doing an assignment in which I need to research a company (Qantas)and its performance on the ASX (Australian Securities Exchange). I know that some sources of information will be the Qantas website and the ASX website but are there any other

asked by Gina on April 25, 2011
39. ## Accounting

BJK Company purchased 1000 shares of its own outstanding \$10 par value common stock for \$14 per share and then sold 400 shares six months later for \$17 a share. Prepare the journal entries for the purchase of the stock and for the sale.

asked by Simone on December 7, 2008
40. ## Finance

You recently paid \$31.50 for a share of Breaking Benjamin stock. Your required rate of return is 13% and you expect the company to increase dividends at a constant rate or 2.5% for the forseeable future. What was the most recent dividend of Breaking

asked by Sara on February 28, 2012
41. ## sample company compensable factor

i need jc penny hay plan by hay associates and compensable factors but i cant find any on the net whole day,,my eyes r really red now and tired so if you can help me find a site that have their company's compensable factor matrix~i would be really happy

asked by hellokitty on January 19, 2012
42. ## Physics Help

On the Acme W&W company production line, parts have to be transported 100 m by conveyor belt to a machine area. The parts move at a constant speed of 2.5 m/s. How much time does it take to move a part 100 m? Show steps please! Thank you!

asked by Tim on September 11, 2014
43. ## vocabulary help

growth-oriented: i asked my dad for help in my english assignment and he gave me this word but can someone put this in simple english please. growth oreinted meaning working in company that shows progess, i guess but a better word. ambitious??? =)

asked by dave on April 30, 2007
44. ## Managerial Economics

# of Fisherman Daily Tuna Catch 0 0 1 50 0.02 2 110 0.02 3 300 0.01 4 450 0.01 5 590 0.01 6 665 0.01 7 700 0.01 8 725 0.01 9 710 0.01 Suppose market price of tuna is \$3.50/lb. How many fisherman should the company use if the daily rate is \$100?

asked by Janet on August 30, 2010
45. ## Trianle Fire

What was the significance of the fire which occurred on March 25, 1911 at the Triangle Shirtwaist Company in New York City? Why were public officials motivated to act in response to the fire? How did the fire and the response to the fire impact the world

asked by Anna on February 26, 2011
46. ## algebra

A DVD player's laser reader helps to "read" the information on the DVD. A particular laser reader measures 0.56 micron thick. does this fall with the required standards if a company uses |t - 0.03 |

asked by kelly on February 22, 2012
47. ## Math to Ms.Sue

1.   The Hamilton Brush Company issued 2,500 shares of common stock worth \$100,000.00 total. What is the par value of each share?      A. \$25.00 B. \$400.00 C. \$250.00 D. \$40.00 My choice is either A C or D? I divided 100,000.00 by 2,500 and got

asked by Sarah on January 16, 2015
48. ## Molly

The CoolWheels Toy Company is designing a new track where a car (mass 60 g) is launched by a spring-loaded starter (k=11 N/m) and goes through a vertical loop (radius 9 cm). If the spring is depressed ∆x=19 cm from equilibrium, what is the speed of the

asked by Physics: energy on October 27, 2010
49. ## Physics

In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.3 kg sphere. Students determine the frequencies of standing waves on the horizontal segment of the

asked by Gabe on March 12, 2010
50. ## statistics

A recent report stated "Based on a sample of 250 truck drivers, there is evidence to indicate that, on average, independent truck drivers earn more than company-hired truck drivers." This statement is an example of __________.

asked by lucky on November 13, 2010
51. ## Mathematics of finance 1

A company has sales of 160000 which represents a 6.5% increase over the previous year. what were the sales over previous year? please elaborate the method and formula

asked by TARAN on February 12, 2017
52. ## COM 135

Discontinuation of major equipment components for a computer network upgrade will cause a major setback in the installation of the network for a project you are managing. You must provide information about the delay to your project team members, to upper

asked by Dawn on February 11, 2008
53. ## COM 135

Discontinuation of major equipment components for a computer network upgrade will cause a major setback in the installation of the network for a project you are managing. You must provide information about the delay to your project team members, to upper

asked by Lavender on February 19, 2008
54. ## Statistics

Records show that 29% of all payments to a mail-order company are submitted aftr the due date. Suppose 50 payments are submitted this week. Let r be a random variable that represents the number of payments that are late. Use the normal approximanition to

asked by Regina Turner on December 5, 2012
55. ## accounting class

Prepare a post-closing trial balance at April 30, 2008 for Goode Company.You can place summation formulas to compute totals at the end of debit and credit columns. Otherwise, you can compute totals using a calculator, then enter totals directly.

asked by j cox on February 14, 2010
56. ## Information systems security

What do I put in my enterprise security plan proposal? I need to cover the ten domains of Information Security Common Body of Knowledge propose the IT Security controls for the organization that you have chosen to write this for. I just need help on what

asked by Jessica on June 5, 2014
57. ## Macroeconomics

Please, please help me! Make a graph in Excel and explain the following: Holding all other things constant, what would happen to the price of pineapples if the firm increase the available supply. 2. Conversely, what would happen if supply is reduce. Aside

asked by Patsy on October 16, 2009

February 3,2016 Kim Morran Ballabari Dear Mr.Kenneth Jei Javier Se, This is my explanation regarding with my absents from your classes because I came late in our subject. My friends were invited me to go out and play computer games that my parents didn't

asked by jessie on February 4, 2016
59. ## Physics

Okay, I'm really confused in general. My question says: "A solid piece of clear transparent material has an index of refraction of 1.61. If you place it into a clear transparent solution and it seems to disappear, approximately what is the index of the

asked by Jo on March 27, 2017
60. ## algebra

Volume of a Box (Refer to the preceding exercise.) A box is constructed from a square piece of metal that is 20 inches on a side. (a) If the square corners of length x are cut out, write a polynomial that gives the volume of the box. (b) Evaluate the

asked by mich on August 13, 2011
61. ## Math PLZ HALP

Your class is conducting an experiment to study geometric sequence. The class forms a line. The first person takes a whole pizza, divided it in half, keeps half, and hands the other half to the next person. The next person in line do the same thing with

asked by Darkdream on January 30, 2018
62. ## Math

A student cuts 1/3 of a coil of wire. He then cuts out another piece that was 8 meters long (I assume from the remaining coil). The two pieces of cut off wire are only half the total length of the wire. How long was the coil before the student cut it? I am

asked by Lulu on April 14, 2016
63. ## Physics

Problem 2- 1. As a ship is approaching the dock at 45 cm/s, an important piece of landing equipment needs to be thrown to it before it can dock. This equipment is thrown at 15.0 m/s at 60∘ above the horizontal from the top of a tower at the edge of the

asked by Maryam on October 26, 2013
64. ## Physics

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Will on April 3, 2008
65. ## Physics

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Hawkins on April 2, 2008
66. ## PHYSICS CIRCULAR MOTION

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.364 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Gina on February 15, 2011
67. ## Physics

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Tasha on April 3, 2008
68. ## Physics

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an

asked by Ant on April 3, 2008
69. ## English

When you learn shorthand, you can focus on what you have to write down. So, concentration will be enhanced. Your listening ablility will be increased. You can do work more effectively. When you listen to lectures, you can summarize what the speakers say.

asked by John on May 29, 2008
70. ## Math

Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles

asked by Mark on July 16, 2013
71. ## Math

Brilli the ant has a block of cheese that is in the shape of an equilateral triangle. She is hosting a party, and has invited her two-legged house mates. She insists that all of her guests get a piece of cheese that is in the shape of an isosceles

asked by Mark on July 15, 2013
72. ## Principles of Finance

Warmack Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for \$490,000 is estimated to result in \$200,000 in annual pretax cost savings. The press falls in the MACRS five-year class, and it

asked by frank on October 31, 2015
73. ## Chem

Paper thickness varies. Typically, 100 sheets are about a cm thick. Atoms typically vary from 1 to 3 angstroms in radius. (An angstrom is 10-10 m.) Suppose a piece of paper is 0.0073 cm thick. How many atoms span the thickness if the radius of the atom is

asked by k on September 12, 2012
74. ## chemistry

A chemist wishes to determine the rate of reaction of zinc with hydrochloric acid. The equation for the reaction is: Zn(s) + 2HCl(aq) ---> H2(g) + ZnCl2(aq) A piece of zinc is dropped into 1.00 L of 0.100 M HCl and the following data were obtained:

asked by Juggy on April 17, 2010
75. ## Why can't I post

I don't know why, but i am getting a friend to post this up for me, but i cannot post a question, when i do, the successful window never comes up. it just goes back to the forum and doesnt add. can anyone help me why? or what i might need to do to get it

asked by becky on January 18, 2007
76. ## Writing

Can you proofread my essay? Be Yourself “To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.” In the stories, “Not Poor, Just Broke,” by Dick Gregory, “Salvation,” by Langston Hughes,

asked by Mattea on December 7, 2012
77. ## math

A rectangular piece of posterboard measures 60 centimeters by 80 centimeters. You draw a net of a box on the poster board and cut it out. If the box measures 10 centimeters by 16 centimeters by 27 centimeters, what is the area of the poster board left?

asked by Me!! on April 15, 2012
78. ## physics

When a container of water is placed on a laboratory scale, the scale reads 120 g. Now a 20-g piece of copper (of density 8.9 g/cm3) is suspended from a thread and lowered into the water, not touching the bottom of the container. What will the scale now

asked by Anonymous on November 22, 2014
79. ## math help!

bernardo folds the 2 top corners of a rectanglular piece of paper to form 2 conguent triangles and an isosceles trapezoid. The triangles each have an angle that measures 65. what are the measures of the 2 top angles in the trapezoid? a. 25 and 25 because

asked by DeNawQisha on December 7, 2010
80. ## accounting

frustrated been working on this for over three hours and now my mind has drawn a blank help please. Meriden Company has a unit selling price of \$500, variable costs per unit of \$250, and fixed costs of \$202,750. Compute the break-even point in units using

asked by Anoymous on August 4, 2015
81. ## human resources

As the company bookkeeper reviewing delinquent accounts receivable, you find that a relative of yours has not paid his account amounts of \$550. You know that he has been experiencing financial difficulties, and so you set his account aside and do not

asked by Shawne on January 28, 2010
82. ## Finance

The Garcia company's bond have a face value of 1000, will mature in 10 years and carry a coupon rate of 16 percent. Assume interest payments are made semi annually. Determine the present value of the bonds cash flow if the required rate of return is 16.64

asked by Anonymous on November 12, 2012
83. ## MGT450

How is strategic planning different from a strategic analysis? 1) requires a lot of research about the external environment 2) requires buy-in and commitment from the participants 3) ends with short-and long-term recommendations 4) is designed to choose

asked by Linda on September 18, 2016
84. ## Finance

The Garcia company's bond have a face value of 1000, will mature in 10 years and carry a coupon rate of 16 percent. Assume interest payments are made semi annually. Determine the present value of the bonds cash flow if the required rate of return is 16.64

asked by Anonymous on November 12, 2012
85. ## Mcc

M. Cotteleer Electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. One of the components has an annual demand of 250 units, and this is constant throughout the year.

asked by Yaw on February 2, 2014
86. ## MATHEMATICS

A piece of notebook paper is about 0.0032 inch thick. If you begin with a stack consisting of a single sheet and double the stack 25 times, how tall will the stack be in inches? How tall will it be in feet? (Hint: Write and solve an exponential equation to

asked by DAN on April 8, 2012
87. ## Math

Clyde has the chance to buy a piece of old Pennsylvania Dutch pottery that he thinks he can resell for \$500. If Clyde needs a 125% markup on cost, what price should he pay? Is the answer 200 or 222.22? 500/225% = 222.22 Is my method correct or I am missing

asked by Heyhi on May 9, 2018
88. ## physics

Two skaters with masses of 66kg and 47kg , respectively, stand 5.5m apart, each holding one end of a piece of rope. Part A If they pull themselves along the rope until they meet, how far does each skater travel? (Neglect friction.) Part B If only the 47kg

asked by bety on March 3, 2014
89. ## MATH FOR TEACHERS

the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the

asked by brittney on March 19, 2012
90. ## Marketing

Select a product or service that you would like to introduce to the marketplace. It may be a product or service from an existing company or a new concept. · Prepare a 1750-2100 word Marketing Plan for your selected product/service. Include the following

asked by Courtney on September 22, 2010
91. ## finance

the joseph company has a stock issue that pays a fixed dividend of 3.00 per share annually. Investors believe the normal rik-free rate is 4 percent and that this stock is 14 percent,and that this stock should have a risk premium of 6 percent

asked by betty on November 14, 2014
92. ## physics

Four identical metallic spheres with charges of +2.2 µC, +8.2 µC, −4.6 µC, and −9.2 µC are placed on a piece of paper. The paper is lifted on all corners so that the spheres come into contact with each other simultaneously. The paper is then

asked by Justin on August 20, 2013
93. ## Justin

Four identical metallic spheres with charges of +2.2 µC, +8.2 µC, −4.6 µC, and −9.2 µC are placed on a piece of paper. The paper is lifted on all corners so that the spheres come into contact with each other simultaneously. The paper is then

asked by physics on August 19, 2013
94. ## Physics/Math

A 25.0 gram piece of charcoal is found in some ruins of an ancient city. The sample shows a 14C activity, R, of 250 decays/min. How long (in years) has the tree this charcoal came from been dead? I think I have the use the equation: R=lamda*No*e^(-lamda*t)

asked by Kristina on February 3, 2015
95. ## Computers

1) What is the purpose of computer simulations? A. to provide virtual hands-on experience when actual hands-on experience is not possible*** B. to provide an online version of a printed text C. to provide clip art about the subject being studied D. to

asked by Janet on February 24, 2015
96. ## Science

The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the

asked by Brittany on October 18, 2008
97. ## Chemistry

The specific heat of copper metal was determined by putting a piece of the metal weighing 39.4 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the

asked by Lance on June 7, 2011
98. ## Chemistry

The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the

asked by Glenna on October 18, 2008
99. ## Chemistry

The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the

asked by Glenna on October 9, 2008
100. ## Computers

You have administrative rights to your computer running windows 7. You cannot find some of the operating system files on your system volume. What to do to make the appear? A. Uncheck hide protected operating system Giles in folder options. B. Uncheck hide

asked by Anthony on January 13, 2014