Monday
October 24, 2016

# Posts by becky

Total # Posts: 666

physics
a 2 kg rabbit starts from rest and is moving at 6 m/s after 3 seconds. What force must the rabbit cause to makes this change in speed?
February 22, 2011

math
If i paid 1.25 in sales tax for an item i purchased. the sales tax rate was 5%. What was the price of the item before tax
February 15, 2011

physics
How many joules of energy are required to run a 100 W light bulb for one day? Burning coal yields about 30x10 to the 8J of energy per kilogram of coal burned. Assuming that the coal power plant is 30% efficient, how much coal has to be burned to light the bulb for one day?
February 2, 2011

geometry
what is approximate area of triangle if each side is 36 inches long
January 31, 2011

marketing
ABC Technologies manufactures computer accessories, such as modems and network cards. Even though the company has several purchasing managers, the company president has final authority on all purchases over \$500, including the selection of the supplier. In the typical buying ...
January 30, 2011

Physics
Thanks it worked :)
January 2, 2011

Physics
Im using the F=Gm1m2/r^2. So to figure out the y i plugged in the values for massA and B and used a radius of .5 to get 2.96E-7. For the x i used the same formula but did it twice once for particle CB and the other for BD. then i added them together and got -1.74E-7.
January 2, 2011

Physics
Four uniform spheres, with masses mA = 37 kg, mB = 30 kg, mC = 220 kg, and mD = 55 kg, have (x, y) coordinates of (0, 50 cm), (0, 0), (-77 cm, 0), and (44 cm, 0), respectively. Find the net force on sphere B due to the other spheres. What are the (a)x and (b)y components of ...
January 2, 2011

Physics-Gravitation
when i plugged in the values i got 4.62E10 is that number suppose to be negative or positive?
January 2, 2011

physics
A coin is placed on a vinyl stereo record that is making 78 revolutions per minute on a turntable. Find the magnitude of the acceleration when the coin is placed 5.0, 10, and 17 cm from the center of the record. The radius of Earth is about 6.38x10^3 km. A 7.40x10^3 N ...
December 13, 2010

Math
Give vertex, axis, x-intercepts and y-intercepts to parabola y= -3x^2-6x+4
November 24, 2010

Chemistry
I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!
November 16, 2010

Chemistry
I'm having a hard time with a question predicting the reaction (if any) of 1,2-dichloroethane and sodium iodide, sodium iodate, and sulfuric acid. Any suggestions? Thanks!
November 16, 2010

Physics
Work = Force x distance Both traveled the same distance (flight of stairs) & both were composed of the same force (weight). Therefore, they both exerted the same amount of force. However, the first person who climbed the stairs at 30 s exerted more energy at less time than the...
November 15, 2010

Mathematics
Find the periodic payment that will amount to the given sum under the given conditions: S=\$150,000; interest is 6% compounded semiannually; payments are made at the end of each semiannual period for 11 years
November 7, 2010

chemistry
Can someone please explain why there are so many gas laws. I've been doing my homework with the appropriate formulas, but I'm confused why everyone keeps say that PV=nRT is so wonderful? You can't get the same solution by using this ONE formula, so what is so ...
November 7, 2010

Chemistry
What is the molarity of 350 mL of solution that contains 27 g of CaCl2?
November 5, 2010

Chemistry
What is the mass of 1.665 x 10 to the 22nd formula units of calcium acetate,Ca(C2H3O2)2?
November 5, 2010

Chemistry
What is the molar mass of calcium acetate, Ca(C2H3O2)2?
November 5, 2010

Chemistry
What is the molarity of 350 mL of solution that contains 27 grams of CaCl2?
November 5, 2010

American Government
If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?
November 2, 2010

physics
When we measure displacement, you measure the distance between the Initial Position (260) & the Final Position (175). Displacement = Difference between initial position & final position. Initial - Final = Displacement 260 - 175 = 85 m.
October 22, 2010

physics
A planet is 400 times more massive than the earth, and its radius is 10 times that of the earth. The weight of an object on the surface of the planet is?
October 21, 2010

statistics
Starting with the data values 70 and 100, add three data values to the sample so that the mean is 96, the median is 97, and the mode is 97
October 15, 2010

physics
A crate of mass 97 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.26. What is the smallest radius of curvature (in m) that the truck can take, if the speed with which it is going around a circle is 44 m/...
October 4, 2010

Math
Of people who died in the US in recent years, 86% were white, 12% were black, and 2% were Asian. (This ignores a small number of deaths among other races.) Diabetes cause 2.8% of deaths among whites, 4.4% among blacks, and 3.5% among Asians. The probability that a randomly ...
October 3, 2010

College Anatomy
Where do bones increase in length? Where do bones increase in diameter?
September 29, 2010

physics
If the green ball bounces upward from the ground with a speed of 20 m/s (immediately after it hit the ground), calculate the momentum of the ball as it goes upward immediately after hitting the ground
September 28, 2010

geometry
If ef=2x+4,fg=4x-10,and eg=12 find the values of x,ef and fg?
September 20, 2010

College Anatomy
Chromosome
September 11, 2010

College Anatomy
What are linear structures formed from chromatin?
September 11, 2010

College Anatomy
What organelle produces spindle fibers during mitosis?
September 11, 2010

College Anatomy
Inclusions
September 11, 2010

College Anatomy
neuron and prokaryotic
September 11, 2010

College Anatomy
Which of the organelles in a cell is most directly related to organic evolution? Why?
September 11, 2010

College Chemistry
If you leave a glass of tap water out long enough, the water will evaporate and leave behind a white solid. Is this a chemical or physical change?
September 10, 2010

College Chemistry
A plant grows. Is that a chemical or physical change?
September 10, 2010

College Chemistry
Is this a physical or chemical change?
September 10, 2010

College Chemistry
If you leave a glass of tap water out long enough, the water will evaporate and leave behind a white solid.
September 10, 2010

College Chemistry
When you bake cake batter it solidifies. Is this a physical or chemical change?
September 10, 2010

College Chemistry
When two solutions are mixed, small bubbles are formed. Is that a chemical or physical change?
September 10, 2010

College Chemistry
Also something i forgot to add while posting this question. The 0 and 28 are in degrees Celsius and the ice cube tray which the water is held in has 925 grams of water
September 8, 2010

College Chemistry
If the water initially has a temperature of 28, how many kilojoules of heat must be removed to cool and freeze the water at 0?
September 8, 2010

math
evaluate. 8 1⁄4 - 6 15⁄32 i got 2 7/32 is this correct. if not what am i doing wrong.
June 16, 2010

math
Marco is making a scale drawing of a building. The scale for the drawing is 1 inch = 7 feet. The height of the building in the drawing is 1 foot. Determine the height of the actual building. Someone please help me.
June 16, 2010

Math
(7.66 • 10^2)(6.29 • 10^-4) answer then convert to scientific notation. the answer I keep getting is 0.481814 the scientific notation I get from this is 4.81814*10^5 but i keep getting it wrong. Can someone please help me.
June 16, 2010

Math
Multiply or divide and write scientific notation for the result. (7.66 • 10^2)(6.29 • 10^-4) can someone please help me with this.
June 13, 2010

PreAlgebra
Convert to decimal notation. 3.73 • 10^-4= -37300 Im not good with intergers. I just needed to know if this was correct. If not can someone explain it to me.
June 13, 2010

PreAlgebra
Convert to decimal notation. 5.585 • 10^6= 55,850,000 I need to know if this is correct? If not how do you do this? Thanks
June 13, 2010

PreAlgebra
Write an equivalent expression using negative exponents. 1/3^9 will i write this as 3^-9. please explain this to me.
June 13, 2010

Math
I have no clue what this means. Can someone explain this to me. Evaluate t^1
June 12, 2010

Math
Someone please help me. I have no clue where to start. 1. My family and I went to Applebee's for dinner. The price for the meal for all of us was \$73.49. How much will a 15% tip be? What will be the total amount paid including tip? 2. My insurance commission rate is 12%. A...
June 8, 2010

Algebra
find a function f is given by f(-4) = 4x^2-3+7
June 3, 2010

algebra
this is how I would do this one 8=2x -3 8-8= 2x -3 -8 0 =-11 + 2x -2x = 11 + 2x -2x 2x = -11 2x/2 = 11/2 x=11/2
June 3, 2010

Math
My family is having a reunion today, I have to make enough banana pudding for 65 people. How many bananas at .59 a pound do I need. (I have no idea where to start or what to do. Can someone explain this to me?)
May 31, 2010

Math
Solve the problem. Round to the nearest unit. 584 is 12.2% of what? I got 47.868852459016 (on the calculator) Just wanted to know if I rounded to the nearest unit correctly. When I rounded I got 4787?
May 29, 2010

Math
Find the simple interest. Round your answer to the nearest cent. Principal = \$900 Rate = 4% Time in years = 3 Is this correct: 900*0.04=36 36*3=108.00 Then my next question is when you round to the nearest unit is it the same as regular rounding. 335.42 rounded to the nearest ...
May 29, 2010

Math
Solve the problem. Round to the nearest unit. 161 is 48% of what? A. 33,500 B. 3350 C. 335 D. 3
May 29, 2010

what is the concentration in parts per million of a water sample that contains 4g of Hg in 200g of water?
April 13, 2010

math
The terminal side of theta is in Quadrant III and lies on the line y = 2x. What are the 6 trig functions?
April 12, 2010

Math
Line m is perpendicular to plane A. how many planes can contain line m and alo be perpendicular to plane A? I think it my be infinite?
April 1, 2010

University Physics II
A 13.9 nC charge is located at position (x,y) = (1cm,2cm). A. At what (x,y) position is the electrical field -225,000i_hat N/C? B. At what (x,y) position is the electrical field (-161,000i_hat + 80,500j_hat) N/C? C. At what (x,y) position is the electrical field (-21,600i_hat...
March 23, 2010

English
I think it's perfect!
February 24, 2010

biology
Smooth edged leaves (S) dominant over rough edged leaves (s). Two plants heterozygous for smooth edged leaves are crossed. What proportion of the offspring are expected to be smooth edged leaves? a. 1/4 b. 1/2 c. 3/4 d. 1
February 23, 2010

biology
What is the source of energy driving the hydrolic cycle? a. evaporation of the ocean water b. heat conducted from the earth's core to the surface c. radiant heat from the sun d. air currents returning to the earth's surface
February 23, 2010

pre cal
how do you determine the domain of the variable in the expression x-6 over 5-x?
February 8, 2010

chemistry
By means of what single reagent could you distinguish between the following? (Tell what happens to each substance.) Solutions: AgNO3 and Zn(NO3)2 H2SO4 and HNO3 Ag(NH3)2Cl and AgNO3 Solids: AgCl and ZnCl2 AgCl and Hg2Cl2 PbCrO4 and K2CrO4
February 4, 2010

algebra
Jack usually mows his law in 5 hours. Marilyn can mow the same law in 6 hours. How much time would it take for them to mow the lawn together?
February 1, 2010

I.T
what would you need to do in order to legally use the pictures from a websight?
January 20, 2010

Physics
To find the velocity and acceleration vectors for uniform circular motion and to recognize that this acceleration is the centripetal acceleration. Suppose that a particle's position is given by the following expression: r(t) = Rcos(omega*t)i + Rsin(omega*t)j Velocity ...
November 13, 2009

math
What about the ceiling, Should you add another 15x19 area then divide by 78.2 to get the amount of gallons needed?
November 11, 2009

HCR220
HCR 220 week 6 Applying Level II HCPCS Modifiers can anyone help with this
November 2, 2009

Physics
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.2 m/s at ground level. Its engines then fire and it accelerates upward at 4.20 m/s2 until it reaches an altitude of 960 m. At that point its engines fail, and the rocket goes into ...
October 11, 2009

Physics
A motorist drives along a straight road at a constant speed of 16.5 m/s. Just as she passes a parked motorcycle police officer, the officer starts to accelerate at 3.50 m/s2 to overtake her. Assume that the officer maintains this acceleration. (a) Determine the time it takes ...
October 11, 2009

physics
As soon as a traffic light turns green, a car speeds up from rest to 50.0 mi/h with a constant acceleration of 9.90 mi/h·s. In the adjoining bike lane, a cyclist speeds up from rest to 20.0 mi/h with a constant acceleration of 13.5 mi/h·s. Each vehicle maintains ...
October 11, 2009

physics
To solve for the first part, I got time = 2.89 seconds, but then it shows that I got the wrong answer?
October 11, 2009

physics
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 15.0 m/s, and the distance from the limb to the level of the saddle is 3.50 m. (a) What must be the horizontal distance between the ...
October 11, 2009

english
Can someone write a harvard outline for me. I have no clue what to do. Discuss how color, music and setting was used effectively and thematically in the M.T.V version of Romeo and Julie. How did the actors make this real for you.
October 4, 2009

english
I don't know what to write for a harvard outline of romeo and juliet mtv version. Discuss how color, music and setting was used effectively and thematically in Romeo and Juliet. How did the actors make this movie real for you.
October 4, 2009

(math) find a rule. writhe the rule as an equasion. use the equasion to extend the pattern.
October 1, 2009

criminology
I was wonderingif I could get some guidence in finding a site on crime committed based on the social structure theory?
July 28, 2009

Networking
I need help with these questions 1. You are the network administrator for a company that has peer-to-peer network. How would the pieces and components of this network relate to each other? Define all the components of this type of network. 2. You are the administrator of a ...
July 17, 2009

analysis and design
thanks for nothing
June 20, 2009

analysis and design
My project is upgrading a bathroom and this is what I need help with: Project Risk-list 5 factors and their potential impact for the project. Project Constaints-ex: triple constaints variable (cost,time/schedule and scope)are there any possible limitations list all that apply...
June 20, 2009

analysis and design
5.2 Project Risks [Use this section to list at least five risks factors and their potential impacts for the project.] # Risk Area Likelihood Risk Owner Project Impact-Mitigation Plan 1 [Project Risk] [High/Medium/Low] [Replace this text with a description of the Mitigation ...
June 20, 2009

Accounting
Lear, Inc. has \$800,000 in current assets, \$350,000 of which are considered permanent current assets. In addition, the firm has \$600,000 invested in fixed assets. a. Lear wishes to finance all fixed assets and half of its permanent current assets with long-term financing ...
June 16, 2009

Accounting
Can anyone tell me if one of these is correct? Lear, Inc. has \$800,000 in current assets, \$350,000 of which are considered permanent current assets. In addition, the firm has \$600,000 invested in fixed assets. a. Lear wishes to finance all fixed assets and half of its ...
June 16, 2009

Accounting
Healthy Foods, Inc., sells 50-pound bags of grapes to the military for \$10 a bag. What is the degree of combined leverage at both sales levels? Chapter 5 page 144 problem 13 in Foundations of Financial Management. This is what I have so far can you tell me if this is correct? ...
June 11, 2009

Healthy Foods, Inc., sells 50-pound bags of grapes to the military for \$10 a bag. What is the degree of combined leverage at both sales levels? Chapter 5 page 144 problem 13 in Foundations of Financial Management. This is what I have so far can you tell me if this is correct? ...
June 11, 2009

IT
that did not answer my question I need to know how to do this
May 27, 2009

IT
Use Microsoft® Project to develop a Work Breakdown Structure (WBS) for your project defined in Week 2. Include a 100- to 150-word description of how and why you would use a WBS in a project. · Post your completed WBS and my project is on upgrading a bathroom I have ...
May 27, 2009

IT
â—‹ Collaborative discussion clusters will be assigned. â—‹ Each cluster will choose one project from the list below. â—‹ Discuss the elements included in a SDLC with your cluster as they relate to your selected project. â...
May 19, 2009

IT
I need to create a sample plan on remodeling a bathroom this is for class IT 221N Analysis and Design Information Systems
May 19, 2009

Chemistry
SO3 can be produced in the following two-step process: FeS2 + O2 ---> Fe2O3 + SO2 S02 + O2 ----> SO3 Assuming that all the FeS2 reacts, how many grams of SO3 are produced when 20.0 g of the FeS2 reacts with 16.0 g of O2?
April 28, 2009

science
what are the different forms of a trait that a gene may have called?
April 2, 2009

college: western Literature
I have a paper to write on a modest proposal. Here is the actual assignment. in a 3-5 page essay, defend and support the idess Swift proposed in "A Modest Proposal". You must include modern examples and experience to develop your ideas as well as include discussions ...
February 3, 2009

Describe why the incomplete combustion of a hydrocarbon in an enclosed area can be dangerous.
January 4, 2009

physics
The pressure in a constant-volume gas thermometer is 0.700atm at 100 deg. Celsius and 0.512atm at 0 deg. Celsius. a) What is the temperature when the pressure is 0.0550atm? b)What is the pressure at 500 deg. Celsius?
December 2, 2008

math
How did you get 10/24? Are you adding the fractions by useing the lease common denominator?
November 16, 2008

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