Tuesday
September 30, 2014

Posts by DANNY


Total # Posts: 640

Physics
The "Screaming Swing" is a carnival ride that is-not surprisingly-a giant swing. It's actually two swings moving in opposite directions. At the bottom of its arc, riders are moving at 30 m/s with respect to the ground in a 44 m-diameter circle. At the bottom of ...
September 27, 2010

Physics
The "Screaming Swing" is a carnival ride that is-not surprisingly-a giant swing. It's actually two swings moving in opposite directions. At the bottom of its arc, riders are moving at 30 m/s with respect to the ground in a 44 m-diameter circle. At the bottom of ...
September 27, 2010

physics
A ball is thrown horizontally from a 15m -high building with a speed of 8.0m/s. How far away from the base of the building does the ball hit the gnd. I'm needing help setting this up. I know change of Y is -15m, and the "a" is -9.8m/s^2, but i get lost from there...
September 26, 2010

Physics
find the x- and y- component of vector R which has a length of 13cm at 30.0 degrees
September 23, 2010

Physics
8.2 minutes
September 16, 2010

Physics
Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 70. How many min does she save?
September 16, 2010

physics
Sorry about that, it's MPH!
September 16, 2010

physics
In college softball, the distance from the pitcher's mound to the batter is 43 feet. If the ball leaves the bat at 90 , how much time elapses between the hit and the ball reaching the pitcher?
September 16, 2010

10th grade math
how kan i solve this equation 7a-3a+2a-a=16
September 3, 2010

Philosophy
Habit for example I make my bed every day or I brush my teeth twice daily. Bad habit I smoke daily. Moral behavior I live by a certain standard of good morals. For example I try to be honest in everything I do. Bad moral behavior.Example I dont mess with my neighbors wife.
May 17, 2010

Philosophy
What is the connection between habit and moral character?Is a bad habit indicative of bad moral character or are habits, by definition, more objective in scope?
May 17, 2010

algebra
z(-1)(z+3)=0 x^2 - x - 10=2 please help I really don't get it .
May 17, 2010

psychology
interactionism what influence does culture have on personality did you observe a particular culture derived trait which one of the four positions of the nature of traits do you agree with most and why compare and contrast your position against one of the other four positions ...
May 13, 2010

Chemistry
and same with SO2
May 12, 2010

Chemistry
isnt the numerator supposed to be (2)SO3^2?
May 12, 2010

math
35 divided by [9 plus (9-7) minus 4] plus 10 times 3..can someone please explain how to do this problem math - Evan, Tuesday, May 11, 2010 at 8:37pm think of "Please Excuse My Dear Aunt Sally" P is for paranthesis first E is for exponents M and D are for multiply and...
May 11, 2010

math
35 divided by [9 plus (9-7) minus 4] plus 10 times 3..can someone please explain how to do this problem math - Evan, Tuesday, May 11, 2010 at 8:37pm think of "Please Excuse My Dear Aunt Sally" P is for paranthesis first E is for exponents M and D are for multiply and...
May 11, 2010

math
I know that I just dont know how to break it down or the answer. must be beyond me the teacher gave it to us for homework for extra credit and we never did anything like it before
May 11, 2010

math
35 divided by [9 plus (9-7) minus 4] plus 10 times 3..can someone please explain how to do this problem
May 11, 2010

Chemistry
Magnesium reacts with oxygen to form magnesium oxide according to the following equation: 2Mg(s) + O2(g) ==> 2MGO(s) If 0.81 grams of magnesium oxide are formed, how many grams of oxygen reacted?
May 5, 2010

Chemistry
As a sample of the radioactive isotope 131 I decays, its half-life a)decreases b)increases c)remains the same
May 5, 2010

Chemistry
How many milliliters of a 0.20 M KOH are needed to completely neutralize 90.0 milliliters of 0.10 M HCl?
May 5, 2010

English
How to write a type sketch of "the healthy eater"?
May 4, 2010

Chemistry
a)How much would the freezing point change in a 2.5m solution of phenol in benzene? (freezing point of phenol is 7.40 degrees C, freezing point of benzene is 5.12 degrees C) b)How much would the boiling point change in a 1.0m solution of magnesium chloride in ethanol? (boiling...
May 3, 2010

Chemistry
If you needed 2.50g of CuSO4 for a reaction but only had CuSO4 * 5H2O available, how many g would you need to use to get the same number of moles of CuSO4?
May 3, 2010

math
Find the circumference of the wheel.
May 3, 2010

9th grade Algebra
8/12 3/12 1/12 12/12=1
April 25, 2010

Chemistry
Identify the solvent and the solute in vinegar, a dilute aqueous solution of acetic acid.
April 13, 2010

Chemistry
Identify the solvent and the solute in vinegar, a dilute aqueous solution of acetic acid.
April 13, 2010

Chemistry
5F2(g) + 2NH3(g) ==> N2F4(g) + 6HF(g) a)If you have 66.6 g NH3, how many grams of F2 are required for complete reaction? b)How many grams of NH3 are required to produce 4.65g HF? c)How many grams of N2F4 can be produced from 225g F2?
April 5, 2010

Chemistry
The equation for the complete combustion of ethene (C2H4) is C2H4(g) + 3 O2(g) ==> 2CO2(g) + 2H2O(g) If 2.70 mol C2H4 is reacted with 6.30 mole O2, identify the limiting reagent. show all work.
March 27, 2010

math
A. Sheryl 85%*200=170 90%*180=162 B. Sherly 200-170=30 180-162=18
March 26, 2010

math
Dealer B has the lowest price $15,360. The working: Dealer A's Price: After rebate price = List Price - $1,200 = 18,000 - 1,200 = $ 16,800. 8% discount * after rebate price = 8%*$16,800 = $1,344 Net price = $16,800 - $1,344 = $15,456 Dealer B's Price: (100% List price...
March 26, 2010

Chemistry
What is the pH of a 0.200M solution for HBrO? Ka = 2.8 x 10^-9
March 25, 2010

Chemistry
How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
March 25, 2010

Chemistry
What is the pH of a 0.200M solution for HBrO? Ka = 2.8 x 10^-9
March 25, 2010

Chemistry
How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?
March 25, 2010

math percentage diff
I could not figure this out with the regular % differece. Is this an algebric problem.
March 24, 2010

math percentage diff
Is there other methods to solve for this problem?
March 24, 2010

math percentage diff
a value of 2.40 increased to 4.48 in 5 years. what is the change in percentage each year? this one was difficult to figure out..
March 24, 2010

Chemistry
Write a balanced chemical equation for each single replacement reaction. A) Au(s) + KNO3(aq) ==> ??? B) Al(s) + H2SO4(aq) ==> ???
March 22, 2010

chemistry
The combustion reaction of acetylene gas is represented by this equation: 2C2H2(g) + 5 O2(g) ==> 4CO2(g) + 2H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?
March 22, 2010

Calculus
A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 8 km and climbs at an angle of 20 degrees. At what rate, in km/min, is the distance from the plane to the radar station increasing 2 minutes later?
March 1, 2010

Algebra
-9f + 7f - 17
March 1, 2010

global
Why would so many women miners prefer to work in the mines without clothing? Why did the women need the heavy belts around their waists and chains between their legs?
February 24, 2010

question
what does population density mean? i searched it up on the dictionary. com , but i still do not understand
February 13, 2010

science
how quickly -years- can new plants and animals inhabit an area that undergoes a temperature or precipitation change?
February 9, 2010

adv. math
Find the value of x so that the mean of {5x, 3/2x, x+9, -x} is -1. a. 2 b. 1/2 c. -1/2 d. -2 My answer is d. Is it correct.
January 30, 2010

math
2+m<2
January 21, 2010

Spanish
what is the preterite tense from the present of tu puedes ir = ?
January 14, 2010

4th grade
what is the trade first method,i know the counting up method but dont what they mean by the trade first method
January 6, 2010

Physics
A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 5.00 cm . On the left side of the tube, the depth of the oil is 2.30cm . The density of the water is 1x10^3 kg/m^3...
December 3, 2009

Physics
Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this person's body...
December 3, 2009

AP Physics
Please anyone?
December 3, 2009

AP Physics
Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this person's body...
December 3, 2009

chemistry
How many calories are required to heat 25.0 g of platinum from 24.5 °C to 75°C (specific heat of platinum = 0.139 J/gK)? 1. 47 cal 2. 42 cal 3. 48 cal 4. 20 cal 5. 80 cal Thank you.
November 22, 2009

Cost Accounting
28) LO.4 (EVA) Mountain Mist Inc.’s cost of capital is 11 percent. In 2008, one of the firm’s division generated and EVA of $1,130,000. The fair market value of the capital investment in that division was $26,500. How much after-tax income was generated by the ...
November 15, 2009

algebra
base area 56in2, height 6i find volume
November 9, 2009

chemistry
i can narrow it down to 3 and 4 because it would have to form an adduct with the SO2. but how can i solve between 3 and 4?
November 8, 2009

chemistry
Stelco has been recently legislated to reduce total SO2 emissions from iron smelting operations. Select the most effective chemical reagent to desulfurize Stelco’s gas emissions as a strategy to minimize the environmental impact of acid rain in eastern Canada: 1. NaCl 2. ...
November 8, 2009

Physic
A 2.2 m-long string is fixed at both ends and tightened until the wave speed is 50 m/s. What is the frequency of the standing wave shown in the figure? Answer in Hz. I've been working on it for a while but cant figure out...
November 7, 2009

Cost Accounting
What is the variable production cost per unit?
November 2, 2009

Cost Accounting
Please give the formula to calculate Actual mahcine hours MH budgeted Actual VOH
October 30, 2009

Math
Please help, how do I solve this: 7 gal/wk = ___ qts/hour
October 28, 2009

8th grade
WHAT IS A CHEMICAL SOLUTION AND GIVE AN EXAMPLE?
October 26, 2009

Science
WHAT IS A CHEMICAL SOLUTION AND GIVE AN EXAMPLE?
October 26, 2009

Cost Accounting
(allocating joint cost) In one joint process, Hardahl Chemical produces three joint products and one by-product. The following information is available for September 2008 Sales Value at Cost after Final SellingProduct Gallons Split-Off per gallon Split-Off Price Jp-4539 4,000...
October 26, 2009

Cost accounting
If a company has that following information available for October when per unit@4.50 per pound, labor 5.0 hours per unit@10.25 per hour, Actual: material purchased 12,300 pounds @$4.25, material used 11,750 pounds 17,300 direct labor hours@10.20 per hour, what is the labor ...
October 25, 2009

Cost accounting
Hardahl Chemical produces thc. Approximated net realizable values at split-off.ree joint products and one by-product. The following information is available for September 2008:Sales Value at Cost after Final Selling Product Gallons Split-Off per gallon Split-Off Price Jp-4539 ...
October 21, 2009

Pychology
dose any one have any ideas on how to create a demonstraion that will explain a law of sensory perception. i not only have to do a demostration i have to make an illustration of it as well. Im stuk and have no idea what to do it on.
October 20, 2009

Cost accounting
CleanSweep produces outdoor brooms. On April 30, 2008, the firm had 7,200 units in process that were 60 percent complete as to material, 40 percent complete as to direct labor, and 20 percent complete as to overhead. During May, 374,000 brooms were started. Records indicate ...
October 14, 2009

math
200
October 13, 2009

critical thinking
3 false or questionable assumptions that individuals often make (about anything) What makes these assumptions false or questionable? Which false or questionable conclusions might one very easily draw from each of these assumptions? What makes these conclusions false or ...
October 10, 2009

Social Studies
I guess Geography what are 3 levels at which a geographermight study the world? Local and Regional (my answer) BUT i need 1 more
October 8, 2009

physics
s man travel on train and throw a ball straight up relative to the train with speed of 4.90m/s the train has a velocity of 20.0m/sdue east so what is the diplacement of the ball during its rise?
October 8, 2009

physics
s man travel on train and throw a ball straight up relative to the train with speed of 4.90m/s the train has a velocity of 20.0m/sdue east so what is the ball's total time of flight?
October 8, 2009

Cost accounting
(Comprehensive) Jackson Construction Company uses a job order costing system. In May 2008, Jackson made a $1,650,000 bid to build a pedestrian overpass over the beach highway in Gulfport, Mississippi. Jackson Construction won the bid and assigned #515 to the project. Its ...
October 7, 2009

Cost accounting
Delaware Inc. uses a standard cost system. The company experienced the following results related to direct labor in December 2008: Actual hours worked 49,500 Standard hours for production 46,200 Actual direct labor rate $9.25 Standard direct labor rate $9.75 a. Calculate the ...
October 7, 2009

Cost accounting
Cost behavior and classification: Factory supervision, Aluminum tubing, Rims,Emblem, Gearbox, Straight-line depreciation on paint machine,Fenders, Inventory clerk’s salary, Inspector’s salary, Handlebars, Metal worker’s wages, Roller chain, Spokes (assuming cost...
September 20, 2009

Cost accounting
Cost terminology and cost behaviors and exercises solution
September 18, 2009

Humanities
What pitfalls or potential problems do you imagine are possible? How might we work together to avoid them?
September 16, 2009

Cost accounting
You are manager of a small restaurant in your hometown. a. whta information would you obtain for making the decision of wheter to add quiche and spicy chicken wings to your menu? b. why would each of the information items in part (a) be significant?
September 14, 2009

statistics
It is false that of Much of the emphasis in TQM is an understanding and reducing variation within the process through which the product is produced, and samples of output are used in reaching inferences about the stability of the process.
August 25, 2009

statistics
Is true that Much of the emphasis in TQM is an understanding and reducing variation within the process through which the product is produced, and samples of output are used in reaching inferences about the stability of the process?
August 25, 2009

statistics
In determining monthly seasonal indexes for gas consumption, the sum of the 12 means for gas consumption as a percentage of the moving average is 1150. To get the seasonal indexes, each of the 12 monthly means is to be multiplied by?
August 25, 2009

statistics
A multiple regression model has the form: As x2 increases by 1 unit, holding constant x1, then the value of ywill increase by: ŷ=5.25 +2.5x©û+4x ©ü?
August 25, 2009

statistics
Can you show to me sample of Sales and seven year moving average. please give the step. Thank you
August 19, 2009

statistics
If the standard error of estimate = 18 and n = 10, then the error sum of squares, SSE, is: A) 2916 B) 2592 C) 1800 D) 3240
August 18, 2009

statistics
Thank you, MathMate
August 18, 2009

statistics
A regression analysis between sales (in $1000) and advertising (in $100) resulted in the following least squares line: = 75 + 6x. This implies that if advertising is $800, then the predicted amount of sales (in dollars) is: A) $4875 B) $123,000 C) $487,500 D) $12,300
August 18, 2009

statistics
In a chi-squared test of a contingency table, the value of the test statistic was =12.678, and the critical value at = 0.025 was 14.4494. Thus, (Points: 2) A) we fail to reject the null hypothesis at = 0.025 B) we reject the null hypothesis at = 0.025 C) we don’t have ...
August 18, 2009

business statistics
Thank you, MathMate
August 18, 2009

business statistics
Hi, MathMate, thank you for your help. God bless you
August 17, 2009

statistics
In a two-way ANOVA experiment, factor A is operating on 3 levels, factor B is operating on 2 levels, and there are 2 replications per cell. If MSA/MSE = 5.35, and MSB/MSE = 5.72, and MSAB/MSE = 6.75 and using the 0.05 level of significance, what conclusions would be reached ...
August 4, 2009

statistics
In a one-way ANOVA, there are three independent samples, with n1 8, n2 = 10, and n3 = 7. The calculated F-statistic is F = 3.95. At the 0.05 level of significance, what conclusion would be reached? Based on the F distribution tables, what is the most accurate statement that ...
August 4, 2009

math
In two independent samples from populations that are normally distributed, x¯1 =35.0, s1 = 5.8, n1 =12 and x¯2 = 42.5, s2 = 9.3, n2 = 14. Using the 0.05 level of significance, test H0: µ1 = µ2 versus H1: µ1 ≠ µ2
August 3, 2009

Maths
Find the maximum value of the function f(x)=-x4-3x2+x+7 and use it to determine the range of f.
July 28, 2009

How do i do this maths question??
A sector of a circle with radius r cm contains an angle of θ radians between teh bounding radii. Given that the perimeter of the sector is 7cm, express θ in terms of r and show that the area is r/2(7-2r)cm square. Hence, find the maximum area of this sector as r ...
June 19, 2009

Pre Cal.
1. Use half-angle identity to find the exact value of cos165. MY ANSWER: (-1/2)sqrt(2+sqrt(3)) 2. Solve 2 sin x + sqrt(3) < 0 for 0<= x<2pi. MY ANSWER: (4pi/3)< x < (5pi/3) 3.Write the equation 2x+ 3y-5=0 in normal form? (-2sqrt(13)/13)x - (3sqrt(13)/13)y + ...
June 16, 2009

Pre Cal
Solve 4sin^2 x + 4sqrt(2) cos x-6 = 0 for all real values of x. My answer: (pi/4)+2(pi)k, (7pi/4) + 2(pi)k Solve 2cos^2 x-5cosx+2=0 for principal values of x. My answer: 60 and 300 degrees
June 15, 2009

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