Thursday

December 8, 2016
Total # Posts: 282

**Chemistry**

How much heat is required to warm 1.50 kg of sand from 20.0 C to 100.0 C?

*March 20, 2012*

**science**

A proton (mass m = 1.67 multiplied by 10-27 kg) is being accelerated along a straight line at 2.2 multiplied by 1015 m/s2 in a machine. The proton has an initial speed of 2.4 multiplied by 107 m/s and travels 3.8 cm. (a) What is its speed? m/s (b) What is the increase in its ...

*January 20, 2012*

**algebra**

sorry that answer was wrong tis is the right one 3x(43+82/3)*(879/615=y78)

*January 20, 2012*

**algebra**

54x3y

*January 20, 2012*

**geometry**

4 square root 56y8

*January 19, 2012*

**calculus**

Solve the following differential equation: f"(x)=sinx, x(0)=0, x'(0)=1

*December 6, 2011*

**psychology**

In psychology, the study of personality focuses on: change. stability. external factors. learned factors

*November 25, 2011*

**geometry**

a large square has sides of 24 units, midpoints of its sides are connected to create a smaller square. what is the area of the smaller square

*October 30, 2011*

**Math **

1,5,10,10,5,1

*October 27, 2011*

**Math **

1,10,10,1

*October 27, 2011*

**3rd grade math**

venn diagram circle a numbers:838,848,868,878 circle b numbers:403,509,600,702 What number would you write where the circles overlap?

*October 27, 2011*

**Physics**

A projectile is fired from the origin with an initial velocity V₁=100m/s at an angle θ₁=30⁰. Another is fired from a point on the x-axis at a distance x₀=60m from the origin with initial velocity V₂=80m/s at an angle of θ₂. It is ...

*September 22, 2011*

**BUSINESS**

1.Nordstrom creates an open atmosphere, in which every associate’s sales figures are made available to everyone else. Explain the positive impacts.While this is intended to foster creative tension, how might it lead to unhealthy destruction?

*September 15, 2011*

**MIS**

what is WCA?

*September 10, 2011*

**Linear programming**

Yes, thank you so much.

*June 26, 2011*

**Linear programming**

Riverside Oil Company in eastern Kentucky produces regular and supreme gasoline. Each barrel of regular sells for $21 and must have an octane rating of at least 90. Each barrel of supreme sells for $25 and must have an octane rating of at least 97. Each of these types of ...

*June 26, 2011*

**EMT-Basic**

the answer i would say has to be reassuring him that you are going to take good care of his wife.

*June 25, 2011*

**Chemistry**

When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected to 298.15K and 100kPa is calculated to be 0.146L. Find the mass percent of NaNO2 in the sample ...

*May 25, 2011*

**Chemistry**

NaNO2 + HSO3NH2 = NaHSO4 + H2O + N2

*May 25, 2011*

**psychology**

Actually I got it. Its psychoanalytic, humanistic, and behavior. So the question is describe three psychological models of mental illness (psychoanalytic, humanistic, and behavior) include etiological explanation and the principle therapeutic modality that evolved from the model

*May 17, 2011*

**psychology**

The problem is I can't find the name of each models

*May 17, 2011*

**psychology**

None of the links explain three models of mental illness

*May 17, 2011*

**psychology**

I have trouble understanding whats the three psychological models of mental illness include etiological explanation and the principle therapeutic modality that evolved from the model. Can anyone help me? Thanks

*May 17, 2011*

**Physics**

A gatling gun fires at a rate of 2000 rounds per minute. If the bullets travel at a speed of 800m/s, how far apart are the bullets?

*May 1, 2011*

**Math**

4x2squared +9 \3-(8+3)

*February 14, 2011*

**english**

no that's all it gave me and om stumpted because that's the same thing i came up with

*January 3, 2011*

**english**

A transitive verb with a direct object is in the ___ voice. a.active. b.passive. c.subjunctive.

*January 3, 2011*

**english**

they sort of help but there to long for me to read right now

*January 3, 2011*

**english**

The verbs to do , to have , and to be are verbs that can be used 1.as a main verb. 2.as an auxiliary verb. 3.as either a main verb or an 4.auxiliary verb.

*January 3, 2011*

**chemistry**

UGH! I've been working on this problem for about an hour now for my test tomorrow at WMU. No luck. =( My guess? Impossible. =P

*November 15, 2010*

**physics**

A 102.0 N grocery cart is pushed 13.0 m by a shopper who exerts a constant horizontal force of 54.0 N. If all frictional forces are neglected and the cart starts from rest, what is its final speed?

*November 12, 2010*

**physics**

a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured to be 1.0 cm. What is the spring constant of the spring (remember the MKS units)? A mass of 2 kg is attached to a spring with constant 18 N/m. ...

*November 10, 2010*

**physics**

1. An object of mass m and initial speed v0 sliding on a horizontal frictionless surface encounters a frictionless ramp. To what vertical height will the object rise before coming to rest?

*November 3, 2010*

**physics**

An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?

*November 3, 2010*

**physics**

Will the work done by friction on an object that moves through a positive displacement be positive of negative??? negative

*November 3, 2010*

**physics**

An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?

*November 3, 2010*

**Physics**

0.17 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass moves along the ...

*November 3, 2010*

**AP Chem**

Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...

*November 1, 2010*

**11th grade AP Chemistry**

can someone please help me! my test is on tuesday on this stuff and this is the one question that I am confused about!

*October 30, 2010*

**11th grade AP Chemistry**

Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...

*October 30, 2010*

**physics**

What was the initial kinetic energy of the small mass before the collision? What is the kinetic energy of the two-mass combination after the collision?

*October 26, 2010*

**physics**

A 1600 kg car travels at a speed of 10.5 m/s. What is its kinetic energy? Assume that air resistance is negligible.

*October 24, 2010*

**physics**

can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...

*October 20, 2010*

**physics**

can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...

*October 20, 2010*

**physics**

1.If a mass is 15 cm from the axis of rotation and makes 25 revolutions in 10 seconds, what is its speed in m/s? 2.If m = 0.1 kg and the values above still hold, what is the numerical values of the centripetal force?

*October 18, 2010*

**American Corrections**

THE OPENING OF EASTERN STATE PENITENTIARY IN 1829 MARKED FULL DEVELOPMENT OF WHAT

*October 18, 2010*

**Mat 126**

A community college has 3,000 students and 90 instructors. The college plans that enrollment will be 3,500 next year. How many new instructors should be hired if the college wants to keep the same student to instructor ratio? 13 instructors 15 instructors 105 instructors 77 ...

*October 10, 2010*

**science**

Is a wart an example of a papule or a nodule?

*September 2, 2010*

**science**

Which of the following groups of tissue types is found in blood vessels? A. Connective, muscle, and nervous tissues B. Muscle and nervous tissues C. Connective, epithelial, and nervous tissues D. Epithelial and muscle tissues I think it's C because I don't remember ...

*September 2, 2010*

**Health**

Normal urine is ____, as indicated by its pH value. A) slightly alkaline, B) neutral, C) slightly acidic, D) extremely alkaline Normally I would post what my answer is along with the question but on this one I have NO CLUE! I can't find the answer anywhere.

*September 1, 2010*

**algebra**

Draw And Shade a figure that represents 150%.

*August 25, 2010*

**chemistry**

How many grams of ammonia are formed when 1.34 grams of nitrogen react with an excess of hydrogen(3 H2 + N2 reacts to form 2 NH3)(Answer to tenths ex. 2.5)?

*July 6, 2010*

**Calculus**

Actually he forgot to convert the kpa(1000 * N/m^2) into 1000 * N/cm^2

*June 19, 2010*

**writing skills 1**

what is the name of the common error in the sentences

*May 25, 2010*

**religion**

what role does religion play in society in North Korea?

*May 16, 2010*

**math-please help!**

4/3x+2/3x

*April 25, 2010*

**Physical Science**

a player uses a hockey stick to increase the speed of a 0.200 kg hockey puck by 6 m/s in 2 seconds is the acceleration 3 m/s2?

*April 14, 2010*

**math**

7[3m-(m+6)] G.T. -6(M-1)

*March 21, 2010*

**Math**

Find an equation of a plane through the point (1, 5, 1) which is orthogonal to the line x=3+5t y=5-1t z=-1+4t in which the coefficient of x is 5.

*February 1, 2010*

**maths**

iam a common multiple of 3 & 7 my digits have a total of 9

*January 24, 2010*

**Calc**

0 and 1

*December 2, 2009*

**10th grade social studies**

Commonly sorry.

*November 17, 2009*

**10th grade social studies**

How does trade and offering cominly diverse choices INCREASE diversity? Thanks Ms.Sue for answering my last question! ^^

*November 17, 2009*

**10th grade social studies**

I don't get what "What message do these 2 sources present about the impact of globalization on identity?" means..

*November 17, 2009*

**English**

I want to know all the Rhetorical and Figurative Devices and Examples in the Essay Hidden Lesson by David Suzuki

*October 26, 2009*

**math..word problem**

50 feet long and 30 feet wide with 9 feet tall, what is the volume of the interior of the second floor

*August 21, 2009*

**12th grade Social Science**

Can anyone help me with these questions? How was the culture of the Baby Boom so different from that of previous generations? Why are members of Generation X frustrated with Baby Boomers? What are some of the important impacts of Generation Y on the economy? What are the main ...

*July 6, 2009*

**12th grade- Social Science**

Men who are more socially isolated are more likely to abuse their wives than are men who are socially integrated. Can you not do this topic because I just need an example of another topic in the format above.

*July 3, 2009*

**12th grade- Social Science**

I need help in making a hypothesis statement for a certain topic, I chose at school. Can anyone give me an example of one? Here is the format, my teacher wants: (The - represents the boxes, he put for each) TOPIC: - - OVERVIEW OF TOPIC: A brief description about your topic...

*July 3, 2009*

**12th grade English**

Thank you so much, this really helped me a lot.

*July 2, 2009*

**12th grade English**

How does Saki in "The image of the lost soul" use descriptions of places to reach desired effect in story? Can anyone tell me how? an example form the text would be helpful

*July 2, 2009*

**Math**

find the unit rate for 9.25 for 18 pounds

*February 9, 2009*

**Algebra**

Is there really any difference between vertical asympotes and domains in functions? Are they always the same numbers? Thanks

*January 22, 2009*

**algebra**

How can you tell whether a function is rational or not? And how do you determine holes of a graph? Thanks!

*January 22, 2009*

**probability and statistics**

a set of 10 cards consists of 5 red cards and 5 black cards. the cards are shuffled thoroughly and i choose one at random, observe its color, and replace it in the set. the cards are thouruoghly reshuffled and i again choose a card at random, observe its color and replace it ...

*November 24, 2008*

**Urgent Chemistry!!**

1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get this answer. Can someone...

*November 16, 2008*

**Chemistry**

1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get this answer. Can someone...

*November 16, 2008*

**Chemistry Confusion!**

1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get ...

*November 15, 2008*

**college-Intermediate Microeconomics**

The Lump Sum Principle In the 1980s Margaret Thatcher was the British Prime Minister. She was very popular and eective until she pushed for the idea of a so called lump-sum tax. The lump-sum tax is one in which every citizen pays a single xed payment. Consider the ...

*October 8, 2008*

**physics**

A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone pass each other?

*September 16, 2008*

**math**

solve each of the following equations by the square root method and show your work 4x²-20=0

*September 7, 2008*

**math**

solve each of the folowing equations by factoring and show your work x²+x²=13x²-36

*September 7, 2008*

**math**

(x+1)(4x©ø-4x©÷) 1(x+1)+4x©÷(x+1) (1-4x©÷)(x+1) 1-4x©÷=0 -4x©÷+4 0+4=4 ¡î1=¡î4x©÷ 1=2x

*September 7, 2008*

**math**

solve each of the folowing equations by factoring and show your work x²+x²=13x²-36

*September 7, 2008*

**math**

solve each of the following equations by factoring and show your work 12x² + 15x + 10= -10x -2

*September 7, 2008*

**math**

solve each of the following equations by completing the square and show your work x² + 6x + 24=0

*September 7, 2008*

**math**

solve each of the following equations by completing the square and show ur work x²-4x=32

*September 7, 2008*

**math**

solve each of the following equations by the square root method and show your work (3x + 2)²=8

*September 7, 2008*

**Mason**

solve each of the following equations by the square root method and show your work 4x²-20=0

*September 7, 2008*

**URGENT! Last calculus question!**

Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and algebraic methods to do a...

*July 29, 2008*

**Calculus (final question I promise)**

1. Use calculus and algebraic methods to do a complete analysis (i.e., intercepts, critical points, intervals of increase and decrease, points of inflection, intervals of concavity, local maximum or minimum points) for each of the following functions and then sketch the graph ...

*July 28, 2008*

**Essay**

So, what is your question/problem with this?

*July 25, 2008*

**Urgent CALCULUS**

So, I haven't posted in a while...but now I am stummped! Only question I can't get today! A team of students seeks to make a flag representing their commitment to the earth. They will be using a green triangle inscribed in a yellow semi-circle. Find the maximum area of...

*July 25, 2008*

**Calc.**

What function would have a derivative of ƒ′(x) = 12x2 + 4x − 10? Explain how you arrived at your answer...I believe the answer is this: f(x)=4x^3+2x^2-10x...and I got this using the power rule and multiplying. Thanks.

*July 16, 2008*

**Calc.**

How do I deal with square roots and derivatives? Like: f(x)= Sqrtx....the derivative. find

*July 16, 2008*

**Calc.**

What is the derivative of this: not sure because of the pi.... f(x)=x^pi Thanls.

*July 16, 2008*