Friday
July 31, 2015

Posts by Beth


Total # Posts: 689

Grammar
Which of the following sentences displays an INCORRECT use of interjections? A.No, I have not told Laura about the surprise! B.Great! I will make a reservation for the restaurant right away. C.Well, now that I think about it, maybe we should choose another date for the dinner...
September 19, 2012

Math
What is 0.000698 rounded to 2 significant figures?
September 14, 2012

ENGLISH
B D A B B Just took the test. got 3/5
September 11, 2012

Math
Pages in a book are numbered in typical fashion, starting with 1. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur? Please Help!!! I have no idea where to begin
September 4, 2012

Math
Pages in a book are numbered in typical fashion, starting with 1. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur? Please Help!!! I have no idea where to begin
September 4, 2012

medical coding
What is..in the ICD-10-CM may be synonyms or provide a list of various conditions included within a code classification
September 3, 2012

Math
If you have 3 quarters, 5 dimes, and 6 nickles, how many distinct ways can you give someone $0.50 (Assuming that all denominations of coins are distinguishable from on another)? I found 4 ways. Is that correct?
August 22, 2012

math
An art projector takes a 5 x 5" picture and enlarges it 14 times. What is the largest size, height and width, it can make? Have tried a formula of 5" x 14= 70, so 5 x 5" = 70 x 70 = 4900, 4900 divided by the side, 70, = finished size of 70 x 70" ?
August 13, 2012

Physics
A neutron causes the element 88X232 to change according to the reaction 0n1 + 88X232 ---->ZYA + . Identify the (a) atomic number and (b) atomic mass number of the daughter nucleus. (c) This product subsequently undergoes - decay, and its daughter does too. Identify the ...
August 5, 2012

Chemistry
One kilogram of dry air at STP conditions is exposed to 1.00 R of X-rays. One roentgen is defined by Equation 32.1 in Section 32.1. An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy per kilogram of dry air. ...
August 5, 2012

physics
A neutron causes the element 88X232 to change according to the reaction 0n1 + 88X232 ---->ZYA + . Identify the (a) atomic number and (b) atomic mass number of the daughter nucleus. (c) This product subsequently undergoes - decay, and its daughter does too. Identify the ...
August 4, 2012

Physics
An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy per kilogram of dry air. Using the two definitions and assuming that all ions produced are singly charged, determine the average energy (in eV) needed to produce...
August 4, 2012

Physics
A neutron causes the element 88X232 to change according to the reaction 0n1 + 88X232 ---->ZYA + . Identify the (a) atomic number and (b) atomic mass number of the daughter nucleus. (c) This product subsequently undergoes - decay, and its daughter does too. Identify the ...
August 3, 2012

Physics
One kilogram of dry air at STP conditions is exposed to 1.00 R of X-rays. One roentgen is defined by Equation 32.1 in Section 32.1. An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy per kilogram of dry air. ...
August 3, 2012

Physics
Suppose a nucleus of 93X236 fissions into two fragments whose mass ratio is 0.37:0.63. With the aid of the drawing, estimate the energy (in MeV) released during this fission. The drawing Shows A large. The A1 smaller the A2, A2 is nearly double the size of A1
August 3, 2012

Physics
Consider the induced nuclear reaction 1H2 + 7N14 ---->6C12 + 2He4. The atomic masses are 1H2 (2.014102 u), 7N14 (14.003074 u), 6C12 (12.000000 u), 2He4 (4.0026030 u). Determine the energy (in MeV) released when the 6C12 and 2He4 nuclei are formed in this manner.
August 1, 2012

Physics
Suppose a nucleus of 93X236 fissions into two fragments whose mass ratio is 0.37:0.63. With the aid of the drawing, estimate the energy (in MeV) released during this fission. Ive treied to do this problem but i keep getting the wrong answer. I keep getting 164.253 MeV
August 1, 2012

math
Please simplify (-3)2(-3)2 + 22 * (5)(-1)
July 30, 2012

Chemisty
For an electron in a hydrogen atom, the z component of the angular momentum has a maximum value of Lz = 4.22 x 10-34 J·s. Find the smallest possible value (algebraically) for the total energy (in electron volts) that this atom could have
July 29, 2012

Physics
Determine the activity of 1.11 g of 88Ra226 (a) in disintegrations per second (Bq) (b) and in Curies (Ci). The half-life is 1600 yr (1 yr = 3.156 x 10^7 s). 1 Ci is equal to 3.7 x 10^10 Bq. I keep getting the wrong answer and use the equation H=kNo
July 29, 2012

Physics
When any radioactive dating method is used, experimental error in the measurement of the sample's activity leads to error in the estimated age. In an application of the radiocarbon dating technique to certain fossils, an activity of 0.15 Bq per gram of carbon is measured ...
July 27, 2012

chemistry
Determine the activity of 1.11 g of 88Ra226 (a) in disintegrations per second (Bq) (b) and in Curies (Ci). The half-life is 1600 yr (1 yr = 3.156 x 10^7 s). 1 Ci is equal to 3.7 x 10^10 Bq.
July 27, 2012

Physics
How many half-lives are required for the number of radioactive nuclei to decrease to 1/10^4 of the initial number?
July 27, 2012

Physics
When uranium 92U235 decays, it emits a ray. If the emitted ray has a wavelength of 1.30 x 10-11 m, determine the energy (in MeV) of the ray
July 27, 2012

physics
Thanks It deffinatly helped some. I also realised I was downsizing the number to much.
July 21, 2012

physics
Find the wavelength (in nm) of a photon whose energy is 5.90 x 10-19 J. I understand that I have to use this equation to figure out the problem E=nhf, I just keep getting the wrong answer. Which is 33.68 nm
July 21, 2012

Physics
As Section 27.5 discusses, sound waves diffract or bend around the edges of a doorway. Larger wavelengths diffract more than smaller wavelengths. (a) The speed of sound is 343 m/s. With what speed would a 57.0 kg person have to move through a doorway to diffract to the same ...
July 21, 2012

Physics
Interesting. Im glad I wasn't to far off on the answer. Makes me feel a little better about everything. Thank you so much!!!
July 21, 2012

Physics
Two spaceships A and B are exploring a new planet. Relative to this planet, spaceship A has a speed of 0.54c, and spaceship B has a speed of 0.74c. What is the ratio DA/DB of the values for the planet's diameter that each spaceship measures in a direction that is parallel ...
July 21, 2012

Physics
A woman is 1.6 m tall and has a mass of 53 kg. She moves past an observer with the direction of the motion parallel to her height. The observer measures her relativistic momentum to have a magnitude of 2.6 x 1011 kg·m/s. What does the observer measure for her height?
July 21, 2012

Physics
Thank you. i sort of had to back track to get the answer you got but eventually got it. Thank you!!
July 20, 2012

Physics
A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.74c and the exploration vehicle approaching at a speed of 0.98c. What is the speed of the exploration vehicle relative to ...
July 20, 2012

Physics
Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy (1/2mv2) when a particle has a speed of (a) 2.12 x 10-3c. and (b) 0.959c.
July 20, 2012

Physics
suppose that the angle of incidence is 1 = 37.1°, the thickness of the pane is 4.17 mm, and the refractive index of the pane is n2 = 1.50. Find the amount (in mm) by which the emergent ray is displaced relative to the incident ray.
July 14, 2012

Physics
Light waves with two different wavelengths, 632 nm and 474 nm, pass simultaneously through a single slit whose width is 4.47 x 10-5 m and strike a screen 1.70 m from the slit. Two diffraction patterns are formed on the screen. What is the distance (in cm) between the common ...
July 14, 2012

Physics
A compound microscope has a barrel whose length is 17.4 cm and an eyepiece whose focal length is 1.7 cm. The viewer has a near point located 25 cm from his eyes. What focal length must the objective have so the angular magnification of the microscope is -330?
July 14, 2012

Physics
So 34.2/14.6?
July 14, 2012

Physics
A converging lens (f = 14.6 cm) is located 39.0 cm to the left of a diverging lens (f = -4.57 cm). A postage stamp is placed 34.2 cm to the left of the converging lens. (a) Locate the final image of the stamp relative to the diverging lens. (b) Find the overall magnification.
July 14, 2012

Physics
An office copier uses a lens to place an image of a document onto a rotating drum. The copy is made from this image. (a) What kind of lens is used? Should it be 1 - converging, or 2 - diverging? Suppose the lens has a focal length of magnitude 13.0 cm. If the document and its ...
July 14, 2012

math 091
s+(-s)+1/9(9)
June 25, 2012

Physics
Identical +3.92 ìC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total potential at the remaining empty corner is 0 V?
June 16, 2012

Physics
Two wires have the same length and the same resistance but are made up of different materials. The resistivities of these materials are 3.97 Ù and 1.97 Ù. Obtain the ratio of the smaller cross-sectional area to the greater cross-sectional area.
June 13, 2012

Physics
Consider three conducting spheres each 10 cm in diameter. “A” has a net charge of 5 C, “B” has a net charge of 10 C, and “C” has a net charge of zero, but is placed in an electric field of 1000 V/m. Rank the electric field strength inside the ...
June 13, 2012

Physics
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal. Charge A is 0.24 m from the spot, while charge B is 0.37 m from it. Find the ratio qB/qA of the charges.
June 13, 2012

Sceince
The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find the electrical flux ...
June 10, 2012

Physics 1
Three charges are fixed to an xy coordinate system. A charge of +16C is on the y axis at y = +3.1 m. A charge of -16C is at the origin. Lastly, a charge of +55C is on the x axis at x = +3.1 m. Determine (a) the magnitude and (b) direction of the net electrostatic force on the ...
June 9, 2012

Physics
The drawing shows an edge-on view of two planar surfaces thatintersect and are mutually perpendicular. Surface 1 has an area of 1.7 m^2, while surface 2 san area of 3.2 m^2. The electric field in the drawing is uniform andhas a magnitude of 250 N/C. Find the electrical flux ...
June 9, 2012

algebra
if a stock price starts at $61 goes up $3, goes up $2, goes down $1, down $4, goes down $5 what is the stock worth
June 1, 2012

Science-Physics
One of the things that helped our understanding of radioactivity was the discovery of the electron in 1897. The 100th anniversary of this important discovery was celebrated widely in 1997. Explain why more people were aware of the 100th anniversary than of the original discovery.
May 28, 2012

Geography
how many states are surrounded by water?
May 15, 2012

Physics 121
The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
May 6, 2012

Statistics
When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally distributed with standard ...
April 30, 2012

Chemistry
Thank you so much for your help! I was able to follow your steps very well! Much appreciated DrBob222!
April 29, 2012

Chemistry
For the strong acids find the [H3O]and [OH] in a solution that is .785% HNO3 by mass (assume a density of 1.01 g/ml). If someone could offer step by step instructions, that would be terrific!
April 29, 2012

Chemistry
A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and found to have a mass of 258 mg. What mass of baium was in the original solution? (Assume that all of...
April 12, 2012

Chemistry
Describe how you would prepare 2.00 L of an aqueous solution having a pH=3.60, if you had a supply of 0.100 M HCl available.
April 12, 2012

Math
A Sears Relvolving charge card has a monthly rate of 1.75%, the interest is a minimum of $.50 if the average daily balance is $28.50 less. Explain how this poilicy is beneficial to Sears.
April 4, 2012

Physics
Two disks are rotating about the same axis. Disk A has a moment of inertia of 4.53 kg·m2 and an angular velocity of +4.55 rad/s. Disk B is rotating with an angular velocity of -6.86 rad/s. The two disks are then linked together without the aid of any external torques, ...
April 1, 2012

Physics
The drawing shows two identical systems of objects; each consists of the same three small balls connected by massless rods. In both systems the axis is perpendicular to the page, but it is located at a different place, as shown. The same force of magnitude F is applied to the ...
April 1, 2012

English
Is this a correct sentence Be careful whom you tell.
March 27, 2012

accounting
Part 5 Cash Budgeting Landis Company has the following sales forecasts for the selected three-month period in the current year: Month Sales April $12,000 May 7,000 June 8,000 Seventy percent of sales are collected in the month of the sale, and the remaining balance is ...
March 25, 2012

Science/Chemistry
Molarity = mol/ L = 0.0025 / 0.00368 L = .679 M
March 21, 2012

algebra
The period of a pendulum is the time it takes to swing from left to right and back again. The period T seconds, of a pendulum is directly proportional to the square root of its length, Lcm. When L=25, T=1 Find a formula for T in terms of L.
March 20, 2012

Math
Evaluate the expression below log 243 9
March 19, 2012

english 11
it said the answers are D D B A D B
March 14, 2012

English 11
Yeahp rosco
March 12, 2012

algebra
Which is the eighth term in the sequence an=-1/125(5^n-1)
March 10, 2012

math
Which is the eighth term in the sequence an=-1/125(5^n-1)
March 10, 2012

Literature
The best in this kind are but shadows" is A. Titania talking about men. B. Theseus talking about plays. C. Demetrius talking about the women he has loved in the past. D. Bottom talking about his fellow craftsmen.
March 8, 2012

Chem 2
The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4? N2O4(g) 2 NO2(g)
March 5, 2012

Math
Can you help simplify this expression. (x+x/3) divided by (x-x/6)
February 28, 2012

math
Can you help simplify this expression. (x+x/3) divided by (x-x/6)
February 28, 2012

Algebra
Can you help simplify this expression. (x+x/3) divided by (x-x/6)
February 28, 2012

trig
in this right trianlge ABC, m<c=90, m<a=63, and AB=10. if BC is represented by a, then which equation can be used to find a?
February 28, 2012

trig
solve for x log4 64+ log2 2 ________________ =x log3 81
February 28, 2012

stats
Web Results For: the value of the z-score in a hypothesis test is influenced by a vareity of factors. Assuming other variables are held constant, explain how the value of z is influenced by increasing the difference between teh sample mean and the original population mean
February 28, 2012

ACC291
The following stockholders' equity accounts arranged alphabetically are in the ledger of McGrath Corporation at December 31, 2011. Common Stock ($10 stated value) $1,500,000 Paid-in Capital from Treasury Stock 6,000 Paid-in Capital in Excess of Stated Value-Common Stock ...
February 27, 2012

medical front office
How does bookkeeping and banking affect the position of the Medical Assistant?
February 25, 2012

Axia College
Need help with solving the double equation problem. 3x + 2y = 3 9x - 8y = -2
February 23, 2012

statistics
Suppose IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of the scores are above 130?
February 23, 2012

Physics
How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?
February 16, 2012

Math
If A, B, and C stand for different digits, and BA+AC=BCA, what digits do A, B, and C represent? Please Help!
February 13, 2012

Math
If A, B, and C stand for different digits, and BA+AC=BCA, what digits do A, B, and C represent? Please Help!
February 13, 2012

Algebra
Write an equation for the ellipse that satisfies the set of conditions. endpoint of major axis at ( 0, 10) and (0, -10) foci at (0, 8) and (0-8) Please help, I really don't understand how to do this
February 12, 2012

accounting
P4-2A The adjusted trial balance columns of the worksheet for Porter Company are as follows. PORTER COMPANY Worksheet For the Year Ended December 31, 2008 Adjusted Account Trial Balance No. Account Titles Dr. Cr. 101 Cash 18,800 112 Accounts Receivable 16,200 126 Supplies 2,...
February 9, 2012

accounting
Worksheet data for Goode Company are presented in E4-2. Instructions (a) Journalize the closing entries at April 30. (b) Post the closing entries to Income Summary and Retained Earnings. Use T accounts. (c) Prepare a post-closing trial balance at April 30. Cash 13,752 ...
February 9, 2012

Accounting
Worksheet data for Goode Company are presented in E4-2. Instructions (a) Journalize the closing entries at April 30. (b) Post the closing entries to Income Summary and Retained Earnings. Use T accounts. (c) Prepare a post-closing trial balance at April 30. Cash 13,752 Accounts...
February 8, 2012

chemistry
using the conversion of mass if the reactant has 4 atoms of calcium how many atoms of calcium will the product have?
February 5, 2012

physics
A rock dropped from an airplane falls for 13.6 seconds before hitting the ground. How far above the ground was the airplane when the rock was dropped?
February 5, 2012

Social Studies
I need a picture of Charles B. Brooks the inventor of the street sweeper. I can't find one anywhere; could you help me. I'm doing a project and need a picture of him.
February 2, 2012

Physics
An (63Kg) astronaut, floating alone in outer space, catches a 7Kg bowling ball traveling at 20m/s. The velocity of the astronaut and bowling ball after the catch is
February 1, 2012

math
A cricket produces 116 chirps per minute at 72 degrees Fahrenheit and 177 chirps per minute at 80 degrees Fahrenheit. Find a linear equation that models the temperature as a function of the number of chirps per minute .
February 1, 2012

math
mrsdryson is divding her collection of 52 glass bears into equal groups. she has 1 bear left over. how many did mrs.dryson make
January 19, 2012

statistics
what is the value of P(6,4)?
January 17, 2012

algebra
Find the future value of an ordinary annuity. Payments are made and interest is compounded as follows: R=600 7% interest compounded quarterly for 5 years I set this up as follows and still am getting the wrong answer: 500 (1.07)^5-1/0.07 Please help!!
December 15, 2011

Psycholofgy
d. conformity, compliance
December 12, 2011

algebra
find the size of each 5 payments made at the end of each year into a 6% rate sinking fund which produces 76000 at the end of 5 years
December 7, 2011

physics
Rhonda Vous, the 445N human cannonball, is shot from her cannon, leaving it at 18.0 m/s. How much work did the cannon do on her?
December 7, 2011

Calculus
A cylindrical water tank has a radius of 2 feet and a height of 6.0 feet. Compute the work done to pump the water out of a filled tank through the top. [The density of water is 62.4 lbs/ft3.]
December 6, 2011

calculus
Find the volume of the solid formed by revolving the region bounded by y=1-x, y=x-4, x=0 about x=7
December 6, 2011

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. Next>>

Members