Thursday

July 24, 2014

July 24, 2014

Total # Posts: 639

**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 t...

**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...

**Physics**

find the x- and y- component of vector R which has a length of 13cm at 30.0 degrees

**Physics**

8.2 minutes

**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?

**physics**

Sorry about that, it's MPH!

**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?

**10th grade math**

how kan i solve this equation 7a-3a+2a-a=16

**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.

**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?

**algebra**

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

**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 o...

**Chemistry**

and same with SO2

**Chemistry**

isnt the numerator supposed to be (2)SO3^2?

**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...

**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...

**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

**math**

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

**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?

**Chemistry**

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

**Chemistry**

How many milliliters of a 0.20 M KOH are needed to completely neutralize 90.0 milliliters of 0.10 M HCl?

**English**

How to write a type sketch of "the healthy eater"?

**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...

**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?

**math**

Find the circumference of the wheel.

**9th grade Algebra**

8/12 3/12 1/12 12/12=1

**Chemistry**

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

**Chemistry**

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

**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?

**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.

**math**

A. Sheryl 85%*200=170 90%*180=162 B. Sherly 200-170=30 180-162=18

**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 ...

**Chemistry**

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

**Chemistry**

How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

**Chemistry**

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

**Chemistry**

How many mL of 0.225M HCl would be required to titrate 6.00 grams of KOH?

**math percentage diff**

I could not figure this out with the regular % differece. Is this an algebric problem.

**math percentage diff**

Is there other methods to solve for this problem?

**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..

**Chemistry**

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

**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?

**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?

**Algebra**

-9f + 7f - 17

**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?

**question**

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

**science**

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

**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.

**math**

2+m<2

**Spanish**

what is the preterite tense from the present of tu puedes ir = ?

**4th grade**

what is the trade first method,i know the counting up method but dont what they mean by the trade first method

**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...

**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?...

**AP Physics**

Please anyone?

**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?...

**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.

**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 divisi...

**algebra**

base area 56in2, height 6i find volume

**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?

**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. ...

**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...

**Cost Accounting**

What is the variable production cost per unit?

**Cost Accounting**

Please give the formula to calculate Actual mahcine hours MH budgeted Actual VOH

**Math**

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

**8th grade**

WHAT IS A CHEMICAL SOLUTION AND GIVE AN EXAMPLE?

**Science**

WHAT IS A CHEMICAL SOLUTION AND GIVE AN EXAMPLE?

**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 ...

**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 rat...

**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 ...

**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.

**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 th...

**math**

200

**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 questio...

**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

**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?

**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?

**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 compl...

**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 t...

**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...

**Cost accounting**

Cost terminology and cost behaviors and exercises solution

**Humanities**

What pitfalls or potential problems do you imagine are possible? How might we work together to avoid them?

**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?

**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.

**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?

**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?

**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?

**statistics**

Can you show to me sample of Sales and seven year moving average. please give the step. Thank you

**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

**statistics**

Thank you, MathMate

**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

**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 eno...

**business statistics**

Thank you, MathMate

**business statistics**

Hi, MathMate, thank you for your help. God bless you

**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 re...

**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 ca...

**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

**Maths**

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

**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 vari...

**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 + 5sqr...

**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

**Pre Cal.**

Find the area between each curve and the x-axis for the given interval. a. y=x^4+5 from x=0 to x=5 650 b. y=3x^2+5x-1 from x=1 to x=4 97.5 c. y=4x-x^3 from x=0 to x=2 4

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