Saturday

January 31, 2015

January 31, 2015

Total # Posts: 76,978

**Physics**

In one of your rigorous workout sessions, you lost 140 g of water through evaporation. Assume that the amount of work done by your body was 3.8 105 J and that the heat required to evaporate the water came from your body. (a) Find the loss in internal energy of your body (due ...
*December 8, 2014*

**Physics**

Suppose 0.015 kg of steam (at 100.00 °C) is added to 0.20 kg of water (initially at 14.0°C). The water is inside an aluminum cup of mass 40 g. The cup is inside a perfectly insulated calorimetry container that prevents heat exchange with the outside environment. Find ...
*December 8, 2014*

**O Chem**

Write out the mechanism for the hydration of C6H12
*December 8, 2014*

**Organic Chemistry **

Write out two step-by-step mechanisms for the addition of HI to C7H12. Make sure to include all necessary curved arrows to depict electron pair movement.
*December 8, 2014*

**Trig (math)**

1.) Find all solutions of the equation. Leave answers in trigonometric form. x^2 + 1 - sqrt3i = 0 2.) Give the rectangular coordinates for the point. (9, 2pi/3) 3.) The rectangular coordinates of a point are given. Express the point in polar coordinates with r L 0 and 0° K...
*December 8, 2014*

**Trig (math)**

1.) Write the complex number in trigonometric form r(cos theta + i sin theta) with theta in the interval [0°, 360°). 9 sqrt 3 + 9i 2.) Find the product. Write the product in rectangular form, using exact values. [4 cis 30°] [5 cis 120°] 3.) [4(cos 135° + i ...
*December 7, 2014*

**chemistry**

63.0 mL of a 1.30 M solution is diluted to a total volume of 248 mL. A 124-mL portion of that solution is diluted by adding 173 mL of water. What is the final concentration? Assume the volumes are additive.
*December 7, 2014*

**Algebra**

The table below shows the opening value of a stock on the first day of trading in various years. Write a 4th degree model for the data and use the model to estimate the value on the first day of trading in 2010. (1994,2814) (1996,3603) (1998,5429) (2000,3962) (2001,4117) (2004...
*December 7, 2014*

**accounting**

Amazon Appliance Company has three installers. Larry earns $355 per week, Curly earns $460 per week, and Moe earns $585 per week. The company's SUTA rate is 5.4%, and the FUTA rate is 6.2% minus the SUTA. As usual, these taxes are paid on the first $7,000 of each employee...
*December 7, 2014*

**Math**

For a savings account paying 2.4% in which interest is compounded MONTHLY. FIND THE Time needed to double the initial investment of 10000 dollars. The answer is 28.9 years but WHY
*December 7, 2014*

**language arts**

Ok. Do you think it's C? That sounds right to me
*December 7, 2014*

**language arts**

does anybody know?
*December 7, 2014*

**Pre Calc**

Log(x-6) +Log(x+3)=1 Solve for x I think it has no solution but why?
*December 7, 2014*

**Pre-Cal**

Log(x-6) +Log(x+3)=1 Solve for x thank u
*December 7, 2014*

**Pre Cal**

Solve for x Log(x-6) +Log(x+3)=1
*December 7, 2014*

**Pre-Calc**

Log(x-6) +Log(x+3)=1
*December 7, 2014*

**Stats**

In a sample of 400 voters, 360 indicated they favor the incumbent governor. The 95% confidence interval? I can't figure out what to do without a standard deviation!!!!!!!!
*December 7, 2014*

**Algebra**

The table below shows the opening value of a stock on the first day of trading in various years. Write a 4th degree model for the data and use the model to estimate the value on the first day of trading in 2010. (1994,2814) (1996,3603) (1998,5429) (2000,3962) (2001,4117) (2004...
*December 7, 2014*

**Science**

Thanks!!
*December 7, 2014*

**Science **

A geologist working in a national park finds a minerals. He is carrying a kit that contains a penny, a hand lens, a piece of tile, a geologic hammer, and a jackknife. Describe the geologist can use these items to determine some of the minerals characteristic.
*December 7, 2014*

**statistics**

The HIM department has 200,000 active medical records and the department received 12,081 records requests during the year. The QI indicator of the HIM department is Eighty-five percent of records requests will be located within 15 minutes. Of the 12,081 records in the question...
*December 7, 2014*

**Physics**

0.020
*December 7, 2014*

**Finance**

A family purchased a new ski boat for $20,000. The loan agency required a down payment and financed the balance for 36 months with an APR of Determine the total finance charge and monthly payment for the loan.
*December 7, 2014*

**statistics**

the hospital paper filing system contained 20,890 records. A total of 456 were identified as misfiled. What is the filing accuracy rate for the system? What is the percentage of misfiled records?
*December 7, 2014*

**Factoring**

Factor: 14z2 - 49z + 35 I got 7(z^2-7z+5) but I got it wrong? Please correct me.
*December 7, 2014*

**Physics**

A woman runs up a flight of stairs. The gain in her gravitational potential energy is 6500 J. If she runs up the stairs at half the speed, what is her gain in gravitational potential energy?
*December 7, 2014*

**Physics**

. How much potential energy does the 2.5 kg rock sitting on an 18 –meter high cliff have?
*December 7, 2014*

**Wilton Manor Elm**

Along with the flowers, Samantha bought 4 packages of glass beads and 2 vases. The vases cost $3.59 each and the total sales tax was $1.34. The total amount she paid was $28.50, including sales tax. Explaing a stratehy you would use to find the cost of 1 package of glass beads.
*December 7, 2014*

**Math**

Factor: 22n2 + n - 5
*December 7, 2014*

**Math - Calculus**

If 75100 dollars is deposited in an account for 13 years at 5.35 percent compounded continuously , find the average value of the account during the 13 years period. The average value in the account is ? ** im alittle confused in how to find the average value please help and ...
*December 7, 2014*

**Calculus**

Find the average value of the function f(x) 8x^2-9x+8 on the interval [3,5]. Find the value of the x-coordinate at which the function assumes it's average value The average value is ? the x-coordinate is ? Please help and showing work is much appreciated. Thank you
*December 7, 2014*

**solve**

A long distance trucker traveled 168 miles in one direction during a snow storm. The return trip in rainy weather was accomplished at double the speed and took 3 hours less time. What is the speed going?
*December 7, 2014*

**ashford university**

Theories of personality wk 1 assignment I don't understand it
*December 7, 2014*

**math 104**

A rocket engine, 2.44 cross product 10−5 watts/cm2
*December 7, 2014*

**Language Arts Help!**

It was limited
*December 6, 2014*

**chemistry**

One of the reactions involved in the smelting of copper sulfide ores involves copper(I) oxide and copper (I) sulfide: 2Cu2O(solid) + Cu2S(solid) ---> 6Cu(solid) + SO2(gas) Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide. a) Determine ...
*December 6, 2014*

**general question**

Yes
*December 6, 2014*

**English**

Yes, and it seems like the characters are best suited for their given settings.
*December 6, 2014*

**English**

Yes, I listed them.
*December 6, 2014*

**English**

So, could I say that characters and their settings give the story its unique plot?
*December 6, 2014*

**English**

What can I write for a thesis statement for an essay about how the settings influence a story's characters? I don't know how to take a stand on this type of essay.
*December 6, 2014*

**Math**

Scummydale Senior High School has 8 math teachers and 4 history teachers. Suppose that a committee of 8 of those teachers is formed to attend a local conference.
*December 6, 2014*

**chemistry**

A 5.00 liter vessel contains carbon monoxide, carbon dioxide, hydrogen and water vapor at equilibrium at 980C. The equilibrium partial pressures are 300. torr, 300. torr, 90. torr, and 150 torr respectively. Carbon monoxide is then pumped into the system until the equilibrium ...
*December 6, 2014*

**science**

A 170g mass attached to a horizontal spring oscillates at a frequency of 3.10Hz . At t =0s, the mass is at x= 6.60cm and has vx = − 15.0cm/s. Determine the position at t= 5.00s. The period is 0.32258 s The angular frequency is 19.478 rad/s The amplitude is 6.6448×...
*December 6, 2014*

**Nutrition**

Calculate the average intake per hour for carbohydrate, protein, fat, and sodium. 2hours intake:340 kcal, 42 g carbohydrate, 15 g fat, 15 g protein, 250 mg Na
*December 6, 2014*

**chemistry**

Yes
*December 6, 2014*

**Math help **

To find the height of a tree, Wyatt places a mirror so that he can see the top of the tree in the mirror. The mirror is 3 ft from him and 7.5 ft from the tree. If Wyatt is 5.5 ft tall, how tall is the tree? How would I solve this?
*December 6, 2014*

**Math help**

A painter needs to know the height of a building to estimate the amount of paint needed for the front side. When the building cast an 18 ft shadow, the 6 ft tall painter casts a 3 ft long shadow. How tall is the building? Would it be 36 ft?
*December 6, 2014*

**Math help **

each time old faithful in Yellowstone national park erupts, rangers can estimate the height of the geyser by comparing it to the height of a tree. first the Rangers locate a tree of the same height . the shadow of the tree is 93 feet at the same time that the shadow of a 6ft ...
*December 6, 2014*

**Literature **

I don't understand what complication means in terms of plot structure. I mean..how does an event complicates a conflict? Please give examples. It would be ideal if the example is related to Hamlet..
*December 6, 2014*

**Algebra**

Dan works at a hardware store. The employee discount is determined by the formula d = 0.15 (c − 10 ). Use the inverse of this function to find the cost of the item for which Dan received an $18.00 discount. a. Find the inverse function that models cost as a function of ...
*December 6, 2014*

**chemistry**

How many grams of CO(g) are in 0.944 L of the gas at 2.26 atm and 257. K?
*December 6, 2014*

**chemistry**

All polymers made from polyethylene will have the same density.
*December 6, 2014*

**m**

yes
*December 6, 2014*

**m**

For a preschool plan can you have a science activity for each day?
*December 6, 2014*

**Physics**

Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 400 N, is applied at an angle α = 32° to the forward dashed line. The second force, F2 = 536 N, is applied at an angle β = 10° to the forward dashed line. (a...
*December 6, 2014*

**PHYSICS : I NEED HELP PLEASE**

I need help
*December 6, 2014*

**PHYSICS : I NEED HELP PLEASE**

a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient of friction between grass and lawnmower wheels is 0.10. Calculate normal force, force of friction and acceleration
*December 6, 2014*

**Physics: need detailed answer**

what does it mean when it says pulled by a 100N on flat ground?
*December 6, 2014*

**Physics: need detailed answer**

a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient of friction between grass and lawnmower wheels is 0.10. Calculate normal force, force of friction and acceleration
*December 6, 2014*

**Math**

How do you make a process table out of an equation
*December 6, 2014*

**Math**

y=-2x+100 into standard form
*December 6, 2014*

**Math**

I changed it to slope intercept and got y=-2x+100
*December 6, 2014*

**Math**

Is the slope for 10x+5y=500 -2?
*December 6, 2014*

**Math**

10x+5y=500 What is the slope? Do I have to change it to slope intercept form first? Or is there a way to find slope with keeping that equation
*December 6, 2014*

**Math**

What does the slope mean in a scenario
*December 6, 2014*

**MATH**

Is X always the independent variable
*December 6, 2014*

**MATH**

Thanks
*December 6, 2014*

**MATH**

10x+5y=500 What is the independent variable
*December 6, 2014*

**MATH**

x intercept is 50?
*December 6, 2014*

**MATH**

Solve for x intercept
*December 6, 2014*

**MATH**

10x+5y=500 Solve
*December 6, 2014*

**MATH**

Im not sure how to find x intercept when its in slope intercept form already
*December 6, 2014*

**MATH**

Is the x intercept 3/2??
*December 6, 2014*

**MATH**

x intercept of y=30x+20???
*December 6, 2014*

**Reading**

I don't understand the essay "Bodies in Motion and at Rest" by Thomas Lynch. What is the point of the essay? Correct me if I am wrong...is it discussing how our life adds up and that unlike the particulars, we do not have a definite answer to why? Does this make ...
*December 6, 2014*

**Marketing**

my question is How could a coffee manufacturer or retailer integrate fair trade products into its social responsibility efforts?
*December 6, 2014*

**Pre Calculus**

One hose can fill a small swimming pool in minutes. A larger hose can fill the pool in minutes. How long will it take the two hoses to fill the pool working together? Do not do any rounding.
*December 5, 2014*

**Calculus**

Find the interval on which f(x)=xe^-x is increasing. I got (1,infinity)..
*December 5, 2014*

**physics**

how many significant digits are in the following 2,546m
*December 5, 2014*

**History **

True False After emancipation, blacks joined the Confederate Army in droves. I guess this would be true but, much more African Americans joined the Union Army.
*December 5, 2014*

**Calculus**

On what intervals is the function f(x)=e^e^2 increasing? Concave upward?
*December 5, 2014*

**Biology**

Based on cellular respiration, what happens when oxygen supply is cut off to an animal?
*December 5, 2014*

**Calculus**

Differentiate. cos^-1 2x
*December 5, 2014*

**Calculus**

Differentiate. cos^3x My answer: -3cos^2x sin^2x
*December 5, 2014*

**Calculus**

Find the interval on which f(x)=xe^-x is increasing. I got (1,infinity)..
*December 5, 2014*

**Calculus**

If f(x)=the sqrt of 3x,find f'(3). Isn't it 3/2•sqrt of 3?
*December 5, 2014*

**physics**

A 92 kg clock initially at rest on a horizontal floor requires a 656 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 560 N keeps it moving with a constant speed.
*December 5, 2014*

**math**

sarah works in the clubhouse golf course. She receives a case containing 125 golf balls. the number of boxes in the case is equal to the number of packs in each box. and the number of packs in each box is equal to the number of golf balls in each pack. how many golf balls are ...
*December 5, 2014*

**Math**

ask your teacher. Don't waste your time here. You get responses every 10 days.
*December 5, 2014*

**Pre-Calc/Trig...**

okay thank you :)
*December 5, 2014*

**Pre-Calc/Trig...**

Use the rules of logarithms to expand [(x+3)^4(x-5)^7]
*December 5, 2014*

**Physics**

What is the force of attraction between an 8 kg bowling ball and a 13 kg cannon ball that are sitting 2 meters apart?
*December 5, 2014*

**Math**

Suppose their are 2 pieces of cake left over but you dont know how many pieces were in the whole cake
*December 5, 2014*

**physics**

Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. The sound intensity level is 71 dB above the threshold of human hearing. How much sound energy comes through the window in one hour?
*December 5, 2014*

**physics**

A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 28.0 m apart and the total power of the sound coming from each speaker is 0.602 W. Find the total sound intensity the man hears when (...
*December 5, 2014*

**physics**

When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of ...
*December 5, 2014*

**physics**

A jetskier is moving at 8.9 m/s in the direction in which the waves on a lake are moving. Each time he passes over a crest, he feels a bump. The bumping frequency is 1.15 Hz, and the crests are separated by 5.8 m. What is the wave speed?
*December 5, 2014*

**physics**

The speed of a transverse wave on a string is 457 m/s, while the wavelength is 0.228 m. The amplitude of the wave is 2.05 mm. How much time is required for a particle of the string to move through a total distance of 1.34 km?
*December 5, 2014*

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