Wednesday
August 27, 2014

Posts by R


Total # Posts: 109

6th Grade Math
Aiden has 7/10 cup cereal, 2 2/3 cups pretzels, 1/6 cup raisins and 2/5 cup chocolate chips to make a party mix. How much party mix will he have in all if he uses all the ingredients he has?
April 13, 2014

Science
1) b. fossils 2) d. the discovery of abrupt change in DNA in a species after many generations of no change. Yes, these are correct, I've done them myself.
November 15, 2013

Calc
Let F(x, y, z) = z tan−1(y^2)i + z^3 ln(x^2 + 10)j + zk. Find the flux of F across S, the part of the paraboloid x^2 + y^2 + z = 19 that lies above the plane z = 3 and is oriented upward. Thanks! STudying for a quiz... *tan−1 is tan^(-1)
November 10, 2013

math
Let V be the volume of the solid that lies under the graph of f(x,y)= (52 − x^2 − y^2)^1/2 and above the rectangle given by 4 ≤ x ≤ 6, 0 ≤ y ≤ 4. We use the lines x = 5 and y = 2 to divide R into subrectangles. Let L and U be the Riemann ...
September 14, 2013

ECON
For your twenty-first birthday, your grandfather offers you a gift of $1000 today. However you have the choice of waiting 3 years and receiving $1500 or waiting 5 years and receiving $3000. If your money grows at a rate of 8 percent compounded annually, which alternative ...
September 7, 2013

STATISTICS
0.05
August 6, 2013

math
how do i find the measure of central angle rounded to the nearest degree then showing using graphs and degrees
May 10, 2013

Physics
Consider the stability of a ladder of mass m and length L leaning against a wall. A painter wants to be sure the ladder will not slip across the floor. He knows that the frictional force exerted by the floor on the bottom end of the ladder is needed to keep the ladder in ...
May 8, 2013

Physics
^^ That is incorrect
May 8, 2013

Physics
The sled is stuck in the snow. A child pulls on the rope and finds that the sled just barely begins to move when he pulls with a force of 24 N, with the rope at an angle of θ = 33° with respect to the horizontal. The mass of the sled is 14 kg. If the child continues ...
May 8, 2013

Physics
The roller coaster starts with a velocity of 16 m/s. One of the riders is a small girl of mass 26 kg. Find her apparent weight when the roller coaster is at locations B and C. At these two locations, the track is circular, with the radii of curvature given. rB = 10 m, rC = 20 ...
May 8, 2013

Probability
20
April 8, 2013

PHYSICS
A truck has a momentum of 5.8x10^4 Ns [S]. An average force of 2.2x10^3 N [S] increases the truck's momentum for the next 8.8s. What is the impulse and final speed of the truck?
April 5, 2013

PHYSICS
Max is throwing a 57g tennis ball upward and hitting it (with a racket) when it reaches the top of its flight. If the racket exerts an average force of 440N on the ball, find the speed of the ball after the collision (if they are in contact for 4.5ms)
April 5, 2013

PHYSICS
A baseball of mass 148g is travelling at 35.0m/s [E] collides with a baseball bat. the collision lasts for 1.10ms. After the collision, the baseball travels at 52m/s [W]. What is the force of the bat on the baseball
April 5, 2013

physics
An apple (m = 125g) is attached to a vertical spring (from a ceiling) that has a k value of 55 N/m. The apple is held up so the spring is un-stretched. When the apple is released, a) how far will the spring stretch? b) How fast will it be going when it has fallen 4.0cm?
March 28, 2013

physics
A horizontal spring with k = 45 N/m is attaches a 1.0kg block to a spring hung from the ceiling. A block is pulled down to a spot that is 30.0cm from the spring's rest position. What is it's new acceleration?
March 28, 2013

physics
A compact car can achieve a maximum acceleration of 3.2 m/s^2. If dice were hanging from the rearview mirror, what angle would they swing on?
March 24, 2013

physics
A small marble is suspended from a 45 cm string and creates a conical pendulum (like in the picture beside question #57). The marble revolves at constant speed in a horizontal circle with a 6.5 cm radius. Calculate the marble's velocity along the circle.
March 23, 2013

physics
A ball of mass 0.750 kg is attached to the end of a 1.20m long cord that can withstand a maximum tension of 50.0 N. If swung in a vertical circle, what is the maximum velocity the ball can achieve before the string breaks?
March 23, 2013

Math
Put two in opposite corners, then two on each side. The corners ones touch two sides....resulting in three marbles on each side.
February 18, 2013

Science
Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An ...
February 6, 2013

Science
Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An ...
February 6, 2013

french
how to make "nous allons en classe pendant le week-end" negative
December 4, 2012

Physics
An electrical generating plant operates at a boiler temperature of 220 deg C and exhausts the unused heat into a nearby river at 18 deg C. what is the maximum theoretical efficiency of the plant?
November 19, 2012

Physics
Would the answer be B because the temperatures are denoted in deg C? 556K - 273 = 283 deg C.
November 19, 2012

Physics
A pond with a flat bottom has a surface area of 820 m^2 and a depth of 2.0m. on a warm day, the surface water is a temperature of 25 deg C, while the bottom of the pond is at 12 deg C. Find the rate at which energy is transferred by conduction from the surface to the bottom of...
November 18, 2012

Physics
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. One object is a 200 g cube of copper that is initially at 85°C, and the other is a chunk of aluminum that is initially at 5°C. To the surprise of the student, the ...
November 18, 2012

Physics
How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?
November 17, 2012

Physics
How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?
November 16, 2012

Chinese
This character is ma (neutral), correct? Thank you. 吗
August 29, 2012

Algebra 1
You're welcome! Sorry I couldn't explain it to you better earlier.
August 29, 2012

Algebra 1
*put
August 29, 2012

Algebra 1
Okay. For this type of problem, you'll need to make sure your two numbers can compare. This means you're going to have to change your decimal (.3) to a fraction. .3 is said, "three tenths," So you take your 3 and but it over the 10 (3/10). Now you have 3/14 ...
August 29, 2012

Algebra 1
Please tell me what you don't understand, Dani.
August 29, 2012

Algebra 1
I made a mistake on my answer. A larger denominator would be the smaller number if the numerators are the same.
August 29, 2012

Algebra 1
Damon, I think you misunderstood me. I realize that .3 is equivalent to 3/10. I was answering the question, not responding to YOUR answer.
August 29, 2012

Algebra 1
You have 3/14 and you're comparing that to 0.3. This means you will have to convert .3 to a fraction. Find the common denominator. You will clearly see the answer. Remember, whenever your numerators are the same, the number with the larger denominator is larger. The ...
August 29, 2012

science
"The cytoplasm gives the cell its shape"
August 27, 2012

acct
Assume that equipment with a balance in the equipment account of $7,200 is discarded. The balance in the Accumulated Depreciation account is $4,900. Cash is received for the equipment totaling $2,600. Please give the journal entry to record the write-off of equipment discarded.
June 24, 2012

college mathematics\
greater than 3: 3/6=1/2 less than 5: 4/6=2/3
June 11, 2012

biology
In rabbits, there are four different versions of gene for coat color. What pattern of inheritance is this?
May 24, 2012

physics
Two small, identical metal spheres contain excess charges of -10.0 x 10^-6 C and 6.0 x 10^-6 C, respectively. The spheres are mounted on insulated stands and placed 0.40 m apart. Determine the magnitude and direction of the force between the spheres.
May 16, 2012

pre-calculas
An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same time. Force X passes through the point (-3, -4), forve Y passes through the point (5,-12), and force Z passes throught the point (15,8). Forces X,Y, ...
May 10, 2012

physics
A speeder traveling at 47 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.59 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?
February 20, 2012

physics
A car accelerates at a constant rate from zero to 28.7 m/s in 10 seconds and then slows to 17.5 m/s in 5 seconds. What is its average acceleration to the nearest tenth of a m/s2 during the 15 seconds?
February 20, 2012

4th grade math
M says that every number in the nineties is composite.J says that one number in the nineties is prime. who is correct?
January 11, 2012

English
his test in particular is outrageous. I too am in Connections and have attended every live lesson none of which prepared me for this exam. It is very, very objective with the questions being non specific of which I can argue more thanone possible answe and depending on my ...
January 9, 2012

physics
A man throws a ball straight up in the air with an initial speed of 24 meter per second. How long does it take for the ball to return to him? What is the maximum height of the ball above the point where it was thrown?
December 6, 2011

Chemistry
Why would the percent recovery obtained over 100% in a an experiment dealing with the cyclic chemical reactions of copper?
October 26, 2011

college math
Random-gain values: 50-20 = 30 ; -20 Probabilities: 1/60 ; 59/60 ----------- E(gain)= 30(1/60)-20(59/60) = 1/2 - (59/3)= (3-59)/6 = -$9.33 ---- A fair price would be 20-9.33 = $10.67
October 23, 2011

Precalculus
Solve 5x^3 – 6x^2 – 4x – 8 = 0
October 18, 2011

physics
A stone falls from rest from the top of a cliff. A second stone is thrown downward from the same height 3.3 s later with an initial speed of 64.68 m/s. They hit the ground at the same time. The acceleration of gravity is 9.8 m/s2 . How long does it take the first stone to hit ...
September 19, 2011

math
Tom has a total of 95 beads. He has 20 more red beads than blue beads. He has twice as many white beads as red beads. How many blue beads does Tom have?"
September 19, 2011

algebra
but i dont know how to get there
September 12, 2011

algebra
write each problem in form ax^p +bx^q p and q are rational numbers [x^2-4x^(1/2)]/2x^(1/3) the answer is 1/2x^(5/3)-2x^(1/6)
September 12, 2011

Math-geometry
Valid
July 12, 2011

socialogy
In what ways is the health problem affected by the family, the economy, and the polity? What innovations could help ameliorate the health problem
July 7, 2011

College Mathematics
Equivalent
July 6, 2011

English
spelling practice book
May 4, 2011

spelling practice
food for large animals
April 5, 2011

Math
TODAY
March 27, 2011

engr 109
Calculate the resistance of a 1 mile length of wire if the conductivity (sigma) is 5.7x10^5 (ohm-cm)^-1 and the diameter of the wire is 1 inch. The formula for resistance is R = length/(sigma*Cross-sectional area) but all of the units must be consistent. The correct answer is ...
February 18, 2011

physics
Stand on a 200 meter high building and, at noon, drop a ball. At what time does it hit the ground
February 17, 2011

math
18/14=90/?
January 3, 2011

Accounting
Partial balance sheets for ABC Company and additional information are provided below. ABC Company, Partial Balance Sheets, As of December 31 2009 2008 Equipment $100,000 $75,000 Accumulated depreciation (25,000) (20,000) Common stock, $5 par 180,000 100,000 Paid in capital 20,...
December 17, 2010

Chemistry 20
a) If the pressure and volume of a gas both increase, will the temperature increase or decrease? b) If the pressure is doubled and the volume is tripled, by what factor must the temperature increase or decrease? c) If the pressure of the gas is decreased by removing some of ...
November 6, 2010

Physics
three vectos are shown in fig. 3-32. their magnitudes are given in arbitrary units. Determine the sum of the three vectors. Give the resultant in terms of (a) components, (b) magnitude and angle with the x axis. (3-32 --the figure has three rays all starting at the origin. Ray...
October 3, 2010

math
The period T (time in seconds for one complete cycle) of a simple pendulum is related to the length L (in feet) of the pendulum by the formula 8T^2=Pi^2L. If a child is on a swing with a 10-foot chain, then how long does it take to complete one cycle of the swing?
July 18, 2010

human service management
What considerations should managers be aware of when administering progressive discipline? What considerations should managers be aware of when administering positive discipline? Explain the effect of the employment-at-will principle on the progressive and positive discipline ...
June 8, 2010

Macroeconomics
rd
June 7, 2010

Physics
A ball of mass oscillates on a spring with spring constant = 200 . The ball's position is described by (0.350 ) 16.0 with measured in seconds. -What is the amplitude of the ball's motion? -What is the frequency of the ball's motion? -What is the value of the mass...
April 28, 2010

math
algebra in 8th your teacher is giving you a test worth 100 points containing 40 questions. There are two-point and four-point questions on teh test. how many of each type of questions are on the test?
February 7, 2010

chemistry
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used.
February 3, 2010

chemistry
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium cyanide is used.
February 3, 2010

Org. Chem.
CH3CH2C(=O)CH2CH3
January 27, 2010

10th grade
An unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0°C. (the gram formula mass=85.0 grams per mole) Determine the minimum mass of NaNO3 that must be added to this unsaturated solution to make a saturated solution at ...
December 25, 2009

elementary math for teachers
25 meters
October 15, 2009

Regent (Math)
I apologize for being impatient
July 28, 2009

Regent (Math)
It will be really appreciated for answering the question.
July 28, 2009

Regent (Math)
I know i am not suppose to ask this kind of question but I thought the teachers here can help me. The question is : Retaking the regent: Good or bad thing? I live under the NYCDOE. I am retaking a regent back. However, the question is that if i take regent back, would only the...
July 28, 2009

psychology
Could you name me a psychologist who studied empathy?
May 8, 2009

medical billing and coding
youre reveiwing reimbursement for a medicare surgical craniotomy case. the case falls into DRG1, which has a relative weight of 3.0970 and a geometrice mean length of stay of 6.3. the hospitals current standard reimbursement rate is $1500. calculate the DRG reimbursement for ...
January 12, 2009

medical billing and coding
you work for a third party payer performning medical records review. your job is to match codes that were submitted on the claim to documentation in the medical record. you notice that a code has been input for a colonoscopy procedure, but you don't see the procedure ...
January 12, 2009

medical billing and coding
yourre an inpatient coder in a hospital. you've just coded a medicare part a record with a diagnosis related group reimbursement of $12000. you notice in the hospitals computer billing system that the patient's charges are $19500. that's $7500 more that the ...
January 12, 2009

medical billing and coding
youre the new director of a hoispital health information management department. The chief financial oficer has hired you for your expertise in health care reimbursement and needs to know how your department can help with reimbursement. list the most important functions of ...
January 11, 2009

medical coding and billing
If HIPAA rules are stricter than state laws, which standard should you follow and why? What if the state law was stricter?
December 11, 2008

Math
dimension you mean length and width. And, Then, when you mulitply them, you should get 54. The whole question is that Contractor need 54 square feet of brick for rectangular walkway. The length of the walkway is 15 feet more than the width. Write an equation that would be used...
November 8, 2008

Math
It is kind of logic question that deals with math. A Contractor needs 54 square feet of bricks to construct a rectangular walkway. What does that mean? Please explain very clearly.
November 8, 2008

sci 275
Ms Sue you are immature for saying what you said" what a good to get an education but answers" as if you are a person that loves to get into peoples business mind your own
November 7, 2008

sci 275
hahaha wow these are some immature people on here
November 7, 2008

Chemistry
However, can I do the following: I pour some water in a test tube and apply a pH paper. Then, I blow in the water. If the color changes, then we can be sure that carbon dioxide can change alkalinity or acidity of water. Let me know what you think. I do not have chance to do ...
October 5, 2008

Chemistry
the expriment was fill half-a testube with water. then, add 5 drops of bromothymol blue. then, blow it until the color change. initial color was green. the color changed to yellow.now, The color change of the bromothymol blue with water is caused by carbon dioxide from your ...
October 5, 2008

Chemistry
The color change of the bromothymol blue with water is caused by carbon dioxide from your breath. How can you test this hypothesis? Need answer immidiately.
October 5, 2008

Soical Studies
Can sombebody explain what C.E. B.C.E A.D. B.C. I know the definition for each term but I just don't get the system. It would be helpful if explanation is much clearer.
September 28, 2008

Biology
i need the word for following definition: 1 incorporation of materials into organism's body 2 taking in food from the nevironment. I need the answer by tonight.
September 24, 2008

High School Math
Sign A Partition
September 16, 2008

AP Chemistry
When a sample of methyl salicylate weighing 5.287 grams is burned in excess oxygen, 12.24 grams of CO2 and 2.522 grams of H2O are formed. What is the empirical formula for oil of wintergreen? I know the answer is C8H8O3, I just need help finding out how to solve the problem. ...
September 16, 2008

math
I need help with these two math problems. i have been trying those for two hours. Can't find the answer. use grouping symbols to make each equation true. 1/2*2^3/2*4/8*4/2=1/2 64-5*1+4/8+5=3 *= multiplication is there any qucik way or any trick to solve these problems ...
September 7, 2008

Science Chemistry
What is molecule, element, and compound? What is the relationships between them?
August 26, 2008

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