Saturday

December 20, 2014

December 20, 2014

Total # Posts: 1,274

**Science**

How have humans observed heredity over time and how has that perception changed as major paradigm shifts in the discipline took place?
*December 19, 2014*

**Science**

Explain the concept of public trust as the author uses it. Resnik, D. (2011). Scientific Research and the Public Trust. Science & Engineering Ethics, 17(3), 399-409
*December 19, 2014*

**science**

Thank you so much Ms. Sue!
*December 19, 2014*

**science**

Resnik, D. (2011). Scientific Research and the Public Trust. Science & Engineering Ethics, 17(3), 399-409
*December 19, 2014*

**science**

Explain the concept of public trust as the author uses it.
*December 19, 2014*

**science**

How have humans perceived heredity over time and how has that perception changed as major paradigm shifts in the discipline took place.
*December 19, 2014*

**Math**

Raymonds age plus his sister janice's age is 48 years. Janice's age is half Raymonds age plus six years. How old is Raymond? How old is janice
*December 16, 2014*

**social studies**

how do i write this?
*December 10, 2014*

**social studies**

•Alexander's campaigns greatly increased contacts and trade between East and West, and vast areas to the east were significantly exposed to Greek civilization and influence. Successor states remained dominant for the next 300 years during the Hellenistic period. •...
*December 10, 2014*

**social studies**

how did the spreading of greek culture during the reign of alexander the great impact the historical development of the known world?
*December 10, 2014*

**Math**

Sally wants to put lights all around her windows. She has 15 windows all the same. Each one is 3 feet long and 2 feet wide. How many strands of lights will she need to buy if each strand covers 10 feet? How much will it cost her if each strand of lights costs $6.99? Don't ...
*December 9, 2014*

**Algebra **

(-5a^2 / b^3)^-1. For a = -4. B= 2 I know you plug in the numbers for a and b but don't know what to do after this is my first time trying a problem like this .
*December 4, 2014*

**calculus 2**

Find all points of intersection of the given curves. (Assume 0 ≤ θ ≤ 2π. Order your answers from smallest to largest θ. If an intersection occurs at the pole, enter POLE in the first answer blank.) r = 1 − cos θ, r = 1 + sin θ
*December 2, 2014*

**Math**

At the start, a biologist counts, m, microbes in a sample. Every day after that, the number of microbes in the sample is multiplied by N.
*December 1, 2014*

**physics**

A metal wedge can be used to split wood pieces. This one has a base only 2 inches across. The length of the wedge is 12 inches. The largest force you can exert with your hammer is 500lbs. As you pound your wedge into the wood, what is the largest sideways force it can exert on...
*November 29, 2014*

**budget**

How would Jenny best allocate her income for the month What categories and in what amounts should Jenny allocate her funds to reflect a balanced monthly budget? Include the main categories as well as examples of other categories
*November 20, 2014*

**math**

38+7=45 break apart ones to make a ten ?
*November 17, 2014*

**math**

Show how to make one addend the tens number. Problem: 22+49= 71 new problem.
*November 14, 2014*

**Juvenile Justice**

Studies show that early association with deviant peers is especially prevalent among youth who are from dysfunctional families that: A. provide little supervision or monitoring. B. are single-parent households. C. have at least one domineering parent. D. have three or more ...
*November 14, 2014*

**Juvenile Justice**

Why is the military style of juvenile boot camps so popular? A. It projects the image of getting tough with juvenile crime. B. It contributes to the overall evaluation of juvenile boot camps, which is extremely positive. C. It helps boot camps to be effective at reducing ...
*November 14, 2014*

**statistics question**

Thank you in advance for anyone able to help me with this... In a sample of 67 randomly selected students, 27 favored the amount being budgeted for next year's intramural and interscholastic sports. Construct a 98% confidence interval for the proportion of all students who...
*November 12, 2014*

**college algebra **

how to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0
*November 9, 2014*

**college algebra **

hw to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0
*November 9, 2014*

**physics**

If a 648 N body on a carpeted surface has a μs of 0.86 and a μk of 0.68, what amount of force will be required to start dragging the body across the floor? Make sure to report your answer with the correct number of significant figures
*November 5, 2014*

**data analysis w/spreadsh w/lab**

Please explain what the outcome of "" means
*November 4, 2014*

**science**

3. One calorie is the energy required to raise one gram of water one degree Celsius. Since we use the joule as the standard measurement of energy, 1 calorie = 4.184 J. If a pot is placed on the stove with 2.4 liters of water at a temperature of 27°C, how many joules are ...
*October 30, 2014*

**Math**

1/(a-1) + 1/b = c solve for a
*October 1, 2014*

**Math**

Aiden drew a square that has an area greater then Dalton's rectangle. what could the sides of austin's square be?
*October 1, 2014*

**Physics **

A ball is thrown vertically upward with an initial speed of 11 m/s . Then, 0.67 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 25 m/s . How far above the release point will the ball and stone pass each other? The ...
*September 30, 2014*

**redan. english**

I am thinking of a word that is in the ip family and means a baby bird
*September 18, 2014*

**physics**

The resistivity of silver is 1.59 × 10-8 Ω·m. What is the resistance of a section of 12 gauge wire (diameter 0.2057 cm) that is 8.60 m long?
*September 14, 2014*

**physics**

To what temperature must you raise a copper wire, originally at 20.0°C, to double its resistance, neglecting any changes in dimensions? (Does this happen in household wiring under ordinary circumstances?)
*September 14, 2014*

**college chemistry**

Express the concentration of a 0.0620M aqueous solution of fluoride, F-, in mass percentage and in parts per million. assume the density of the solution is 1.00g/mL.
*September 11, 2014*

**statistics**

It is time to go shopping for new clothes for school! You have found a catalog for new clothes. You decide that you will buy ve dierent shirts, four dierent pants, two dierent jackets, and three dierent shorts. The catalog has twelve dierent types of ...
*September 8, 2014*

**Computer Programming**

Need Python pseudocode and program that asks the user to enter the number of packages purchased. The program should then display the amount of the discount (if any)and the total amount of the purchase after the discount. Software co. sells a pkg that retails for $99. Quantity ...
*September 6, 2014*

**college algebra**

1.build the fraction x+5/x+3 to an equivalent fraction whoes denominator is x^2-x-12 2. add and simplify: x/x+2 +4x-3/x^2-4
*September 2, 2014*

**Math**

Mike can complete a project in 60 minutes͵ and if Mike and Walter both work on the project͵ they can complete it in 40 minutes. How long will it take Walter to complete the project by himself?
*July 30, 2014*

**physics**

A string with linear mass density μ = 0.0279 kg/m under a tension of T = 183 N is oriented in the x-direction. Two transverse waves of equal amplitude and with a phase angle of zero (at t = 0) but with different frequencies (ω = 3420 rad/s and ω/3 = 1140 rad/s) ...
*July 13, 2014*

**Penn foster 986825rr**

According to the analyses of the stories you were asked to read a pair of silk stocking best represents literary c. Symbolism is wrong.
*July 11, 2014*

**pol201**

The heart of Martin v. Hunter’s Lessee was
*June 26, 2014*

**english**

Thank you Ms. Sue!
*June 19, 2014*

**english**

And no matter how(5)______(benign)my manner, she seemed to view me as some sort of threat. At one point, she became irate and yelled, "That's(6)_____(redundant)I don't have time to answer the same question twice." When I asked her about serious issues, her ...
*June 19, 2014*

**engkish**

benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(blase) about it. Instead, I...
*June 19, 2014*

**english**

benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. When a famous actress arrived in town to work on a movie, an editor asked me to interview her. Because this was my first interview assignment, I felt far from_______(glib) about it. Instead, I ...
*June 19, 2014*

**english**

choose from: benign,blase,comprise,condescend,facade,glib,haughty,libel,pseudonym and redundant. Believing he was better than everyone else at the supermarket, Dan was so________(Haughty) that he would rarely ___(benign) to speak to other cashiers. One author was accused of ...
*June 18, 2014*

**SCI 207**

All three of my questions go together. Sorry I did not put it in order. The two processes are evaporation and condensation using a jar and petri dish experiment.
*June 1, 2014*

**SCI 207**

2. Which processes are not represented? How the model could be altered to include these process.
*June 1, 2014*

**SCI 207**

1. Which water cycle processes are represented in this model and by what components?
*June 1, 2014*

**SCI 207**

3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature?
*June 1, 2014*

**physics**

An electron has an initial speed of 2.95 × 105 m/s.If it undergoes an acceleration of 2.7 × 1014 m/s^2, how long will it take to reach a speed of 5.94 × 105 m/s?
*May 20, 2014*

**math**

The2010 census shows that the population of New Jersey increased by 4.5%. If the 2010 population was 8,791,894, what was the population in 2000?'
*May 5, 2014*

**Statistics**

σ = sqrt[ P * ( 1 - P ) / n ] = sqrt [(0.8 * 0.2) / 100] = sqrt(0.0016) = 0.04 z = (p - P) / σ = (.73 - .80)/0.04 = -1.75. What type of formula is this problem?
*May 4, 2014*

**Statistics**

I am a big shot research scientist at Washington University where I am using 2ebrafish to study neuronal migration. My graduate students measured 40 fish and found that the mean length of the fish sampled was 3.7 cm with a standard deviation of 0.5 cm. Construct a 95% ...
*May 4, 2014*

**Statistics 220**

suppose 59 cars start at a car race, how many ways can the top car finish the race?
*April 30, 2014*

**chemistry**

Suppose 95.0 mL of HCl gas at 25 ºC and 707 torr is bubbled into 298 mL of pure water. What will be the pH of the resulting solution, assuming all the HCl dissolves in the water?
*April 24, 2014*

**biology**

The two main structures that make up a kidney are the A. hilus and cortex B. cortex and medulla c. renal pelvis and medulla
*April 22, 2014*

**Algebra 2**

Ordered pair is from an inverse variation: (3,1/3) how do I find the constant of variation?
*April 22, 2014*

**Physics**

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 6.0 m long, 2.2 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from the surface. When ...
*April 19, 2014*

**Algebra 2**

How do I solve these inequalities: e^3x>e^x-1 -6log (subscript of 4) x > -24 & how do I solve these: 8^x+1=3 e^x+2=50 8logx=16 I really don't understand how to solve these so can someone please explain them to me?
*April 17, 2014*

**Chemistry URGENT**

I need help understanding oxidation I have a problem that states: The proper assignment of oxidation numbers to the elements in the compound LiAsO3 would be: I think the answer is +1 for Li, +3 for As and -2 for O. I think I am confusing oxidation with ionic charge. PLEASE HELP
*April 6, 2014*

**Chemistry URGENT/DR BOB**

Dalton's Law of Partial Pressure consider the following container of helium at 45C. intially the valve is closed. After the valve is opened what is the pressure of the helium gas. your start points are 2.00 atm and 9.00L. after opening the valve you have 3.00 atm and 3.00L...
*April 1, 2014*

**Chemistry URGENT**

consider the following container of helium at 45C. intially the valve is closed. After the valve is opened what is the pressure of the helium gas. your start points are 2.00 atm and 9.00L. after opening you have 3.oo atm and 3.00L. The answer is 2.25 atm what formula did you ...
*April 1, 2014*

**Chemistry URGENT**

Could someone let me know if I have balanced these equations correctly. balanced equation of the reaction of iron and oxygen to produce iron(ii)oxide. 2Fe + O2 = 2FeO Also if the balanced equation of the reaction of iron and oxygen to produce iron(iii)oxide. 4Fe+302 = 2Fe2O3 ...
*March 27, 2014*

**Chemistry URGENT**

I need help balancing a equation for the combustion of cellulose in oxygen to produce carbon dioxide and water vapor. C6H10O5 = 6CO +5H2O I know this is not correct but I don't know what else to do to get this to balance. Thanking you in advance.
*March 27, 2014*

**chemistry**

I do not understand how to right a balanced equation for the combustion of cellulose in oxygen to produce carbon dioxide and water vapor. I know that cellulose is C6H10O5 but I don't understand how to balance. Thanking you in advance for your help.
*March 27, 2014*

**Chemistry**

I am having a hard time figuring out how to write a balanced equation for the reaction of iron and oxygen to produce iron(II) oxide. I also need a balanced equation for the reaction of iron and oxygen to produce iron (III) oxide. I would appreciate any and all help. Thanking ...
*March 27, 2014*

**Chemistry**

220 J to kilojoules 350 kj to calories 97.0 kcal to joules 35.0 cal to kilocalories How do I convert them?
*March 18, 2014*

**algebra**

kaylas cell phone plan as a fixed fee of $45
*March 17, 2014*

**basic college math**

need the answer to track A offers a flat fee of $25 and $.40 per mile. truck b offers a flat fee of $30 and $.25 per mile
*March 16, 2014*

**Chemistry**

How much water can be produced from the complete reaction of 3.64 L of oxygen gas, at STP, with hydrogen gas? Answer in units of g
*March 14, 2014*

**Statistics**

What is 0.095 on the z-score table or where
*March 9, 2014*

**Chemistry**

The pressure on a gas at -58 degrees Celcius is doubled, but its volume is held constant. What will the final temperature be in degrees Celsius?
*March 9, 2014*

**Chemistry**

Before a trip from New York to Boston, the pressure in the automobile tire is 2.1 atm at 280 K. At the end of the trip, the pressure gauge reads 1.88 atm. What is the new Celsius temperature of the air inside the tire?(Assume tires with constant volume). This is how I did it: ...
*March 9, 2014*

**College Chemistry**

Please help me. I have worked on this for 2 days. I don't understand the ratio of this equation.4Na+O2 to 2Na2O. for question: How many grams of Na2O are produced when 81.ograms of Na reacts?
*March 7, 2014*

**English**

What reasons relating to 1984 means the the reality tv show World's stricktest Parents should be banned.
*March 6, 2014*

**Chemistry**

Oh okay, my bad, and thank you for your help
*March 5, 2014*

**Chemistry**

Okay, I understand that part, but if I use P1V1=P2V2, what happens to the temperature that they gave me? What do I do with it?
*March 5, 2014*

**Chemistry**

Why are n and R the same? Isn't n the mol's and R the ideal gas constant?
*March 5, 2014*

**Chemistry**

A gas occupies a volume of .350 L at a temperature of 18.0 degrees Celsius and a pressure of 980.0 torr. What will be the volume of this gas at standard conditions? Please explain how to do it.
*March 5, 2014*

**Chemistry**

Write the reaction for the synthesis of water vapor from hydrogen gas and oxygen gas and balance it. If you used 0.022 mol hydrogen, how many mol of oxygen would you need in order for it to completely react and have no limiting reactant? Can you please explain in detail how to...
*March 5, 2014*

**AP World History**

1.How did the Atlantic Revolutions influence the development of new states and ideologies? 2. Compare the challenges to the 18th century Muslim world and the causes of the Atlantic Revolutions?
*March 4, 2014*

**World History**

1.How did modern states emerge? 2.What challenges confronted the centralization of Muslim states during the 18th century? 3.How did the different Muslim states respond to these challenges? If you can at least tell me where to find it that would be great.
*March 4, 2014*

**Chemistry**

What would be the volume of 5.0 moles of gas at STP? Can you explain how to do it please?
*March 3, 2014*

**Chemistry **

How do you find the [OH-] of a 1x10^-3 M solution of NH4Cl?
*February 20, 2014*

**Chemistry **

If 0.10 mol of Zn(s) is reacted to 150.0 ml of 1M HCl, what is the concentration of Zn+2 in the solution after the reaction is complete? Assume the solid zinc does not affect the volume.
*February 16, 2014*

**Calculus**

isn't it 2cos(x)
*February 13, 2014*

**Calculus**

it asks for h'(0) not h'(2). I got the answer 5 but the key says the answer is 1
*February 13, 2014*

**Calculus**

Let h(x) = 5g(x) - 3x^2 + 2 sin(x) - 7x, and suppose g'(0) = 2, find h'(0)
*February 13, 2014*

**Algebra **

George built a rectangular pen for his rabbit such that the length is 1 ft more than four times the width. If the perimeter is 292 ft, what are the dimensions of the pen?
*February 10, 2014*

**college chemistry**

kilocalories released when 20.0 g of steam condenses at 100 degrees C. and the liquid cools to 0 degrees C.
*February 7, 2014*

**college chemistry**

sorry, Damon. this is a word problem that is on my homework. I think they want to know the kilocalories on this.
*February 4, 2014*

**college chemistry**

to calulate the calories(kcal) in 1/2 cup of soft ice cream that contains 16g carbs, 17g fat, 5g protein. do I multiply 16g x 4 for carbs 17g x 9 for fat 5g x 4 for proteins? then do I do conversion factors for grams to 1/2cup? am I on the right road?
*February 4, 2014*

**college chemistry**

to calulate the calories(kcal) in 1/2 cup of soft ice cream that contains 16g carbs, 17g fat, 5g protein. do I multiply 16g x 4 for carbs 17g x 9 for fat 5g x 4 for proteins? then do I do conversion factors for grams to 1/2cup? am I on the right road?
*February 4, 2014*

**college chemistry**

Ifwater cools to body temp.37 degrees C., how many kilocalories of heat could be transferred to sore muscles?
*February 4, 2014*

**Chemistry**

If 20mL of a 0.100 M NaOH solution are required to titrate 0.25 grams of an unknown acid, what is the equivalent mass of the acid? If the acid actually contains 3 moles of H+ per mole of acid what is the molecular mass of the acid?
*February 4, 2014*

**Physics**

How would the force of gravity between two masses be affected if the separation distance between them were,assume F2 represents the new force and F1 represents the original force.(a)quadruple the original distance F2/F1= also one-half the original distance F2/F1
*February 1, 2014*

**college chemistry**

How many megajoules are released when 9.0 gal of gasoline burns. how do I start to do this problem, and what are the steps to get there. thank you
*February 1, 2014*

**college chemistry**

DrBob222. when you move ice from zero to final T. Do you add 100 cal.?
*January 30, 2014*

**college chemistry**

a 42 piece of ice at 0.0 C is added to a sample of water at 8.0 C. all of the ice melts and the temperature of the water decreases to 0.0 C. how many grams of water were in the sample.
*January 30, 2014*

**chemistry**

a 42 piece of ice at 0.0 C is added to a sample of water at 8.0 C. all of the ice melts and the temperature of the water decreases to 0.0 C. how many grams of water were in the sample.
*January 30, 2014*

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