Thursday
December 8, 2016

Posts by becky

Total # Posts: 678

11 grade English
In Swimming Strokes by Lee Carroll in paragraph 1, how many errors are there in subject-verb agreement, parallelism, and pronoun-antecedent agreement?
March 21, 2011

Physics
A 57.8 kg pole-vaulter falls from rest from a height of 5.4 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.25 s after landing on the pad. (a) Calculate the athlete's velocity just before reaching the pad. ______ m/s downward (b) Calculate the constant force ...
March 21, 2011

Physics
An 95.0 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 26.3 m behind the ship, at rest relative to the spaceship. The only way to return to ...
March 21, 2011

physics
µk x (m x g) x d x cos 30º 0.40 x (290 x 9.81) x 4.0 x cos 30º hopefully that works
March 21, 2011

High School Chemistry
10mL of 0.10M HCl is given. What is the pH? How many milliliters of 0.10M NaOH would be required to neutralize it? What is the pH of the neutralized solution? What would the pH of the solution be if you added 20mL of NaOH? Here's what I have so far: pH of HCl=-log(0.10M)= ...
March 21, 2011

Newton' law of motion
Force = mass x acceleration 50N=10kg x a
March 9, 2011

Physics
thank you.
March 9, 2011

Physics
A 50.0 kg diver steps off a diving board and drops straight down into the water. The net force when in the water is an upward 1450 N. If the diver comes to rest 5.0 m below the water's surface, what is the total distance between the diving board and the diver's ...
March 9, 2011

physics
A ^9 Be nucleus containing four protons and five neutrons has a mass of 1.50×10−26 kg and is traveling vertically upward at 1.70 km/s. If this particle suddenly enters a horizontal magnetic field of 1.25 T pointing from west to east, find the direction of its ...
March 9, 2011

college prep math
what is the least common denominator of (x-4/5x^2-14x-3)-(2x/10x^2-3x-1)+(7x-2/2x^2-7x+3)
March 3, 2011

physics
Four forces act on a hot-air balloon, F_1 is upward at 4600 N, F_2 is left at 1450 N, F_3 is right at 850 N, and F_4 is downward at 3600 N. ____ N at _____ degrees clockwise from F_2.
February 22, 2011

physics
A 2.32 kg book is dropped from a height of +3.7 m. a.) What is its acceleration? b.) What is its weight in newtons?
February 22, 2011

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

chemistry
80070
September 12, 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

11th grade chemistry
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

4th grade
(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

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