Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 70,621

**Chemistry**

what is the mass of nh4cl that must dissolve in 100. grams of h2o to produce a saturated solution at 70 degrees celsius

**chemistry**

if an excess of nitrogen is reacted with 3.41 g of hydrogen, how many grams of ammonia can be produced?

**physics**

A motorist is driving at a constant velocity of 28 m/s when he decides to pass a car that is in front of him. He accelerates at a rate of 2.5 m/s2 for 3.0 seconds while passing the car. What is his velocity at the end of the 3.0 seconds?

**physics**

A student drops an object from a fourth floor window. The velocity of the object is measured at 29.28 m/s 3.0 seconds later. What is the acceleration of the object?

**Reading**

What does it mean when .... Bill clinton lifted the ban on gay in the military. Does he support gay or not? Am I a poor reader, since I cannot understand this? Please be honest..

**STAT**

n a planned study, there is a known population with a normal disrubution, \mu= 0, and \sigma=10. What is the predicted effect size (d) if the researchers predict that those given an experimental treatment have a mean of (a) -8, (b) -5, (c) -2, (d) 0, and (e) 10 ? For each part...

**history**

what is a POST RACIAL SOCIETY Do we live in one? What would one look like if we do not currently exist in one? Will we (should we) as Americans ever live in a POST RACIAL SOCIETY?

**Physics**

I thnk d Tension wil b T=ma+mg..m=max of load.ah may b wrong 2)force of aircraft,F=ma...

**Physics**

A 75.0-kg cross-country skier is climbing a 3.0o slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert backward on the snow to ...

**Physics**

Thank You

**Physics**

(a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m above its starting point,...

**Physics**

A spring with a force constant 0f 2.50 kN/M is set upright, and a wood platform of negligible weight is fastened to its upper end. A 2.50 kg mass is gently placed on the platform and released. How far does the spring compress? What is the final equilibrium position?

**physics**

(a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m above its starting point,...

**Math**

Who is your math teacher? I have Mr.Ryan:)

**Math**

I am guessing you Go to Connections academy. if so, please respond. Here is how you do it. X|1 hr|2 hr|3 hr|4 hr| --------------------- 300 c|?c | ?c | ?c | function is easy multiply each hour by the number of possible calories to be burned. C=X*300 Hope this helped

**maths**

140 / 2 = ? ? - 20 = ? Answers 140 / 2 = 70 70 - 20 = 50 Girls=50 Boys= 90

**Languege arts book responce Walk Two Moons**

Do you agree or disagree with Gramps' decision to let Sal drive by herself to Lewiston? How might the consequences of that choice be different if Gramps had made another decision? Take a position and use examples from the novel to support your choice.

**Languege arts book responce Walk Two Moons**

Thank you Gaylee, but can you tell me which chapter to look in?

**Languege arts book responce Walk Two Moons**

this is a question for those who have read the book Walk two Moons.If you read the book, then you might be able to help. For those, answering, please answer in 5 or more scentances

**Languege arts book responce Walk Two Moons**

Do you agree or disagree with Gramps' decision to let Sal drive by herself to Lewiston? How might the consequences of that choice be different if Gramps had made another decision? Take a position and use examples from the novel to support your choice. Do you agree or disag...

**world history**

D is the answer

**math**

0.84M

**physics!**

a 4.0 kg object has a velocity of 4.0 m/s headed east. an explosion causes it to break up into two smaller 2.0 kg objects. if one of the objects has a velocity of 3.0 m/s at an angle of 30 degrees east of north, what is the velocity of the other object after the explosion

**physics**

An object of mass 5.0 kg is attached to a string of length 2.0 m and rotating in a horizontal circle with an angular velocity of 3.0 rad/s. What is the angular momentum of the object?

**Civics**

In The Wealth of Nations, Adam Smith mentions that very good grapes could be grown in Scotland. However, growing high quality grapdes in Scotland would be about 30 times as expensive as purchasing grapes from foreign countries. Some nations are better than other at producing t...

**Physics**

A toy gun uses a spring with a force constant of 300. N/m to propel a 10.0-g steel ball. If the spring is compressed 7.00 cm and friction is negligible: (a) How much force is needed to compress the spring? (b) To what maximum height can the ball be shot? (c) At what angles abo...

**Physics**

A 75.0-kg cross-country skier is climbing a 3.0o slope at a constant speed of 2.00 m/s and encounters air resistance of 25.0 N. Find his power output for work done against the gravitational force and air resistance. (b) What average force does he exert backward on the snow to ...

**Physics**

. (a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m above its starting poin...

**Physics**

A spring with a force constant 0f 2.50 kN/M is set upright, and a wood platform of negligible weight is fastened to its upper end. A 2.50 kg mass is gently placed on the platform and released. How far does the spring compress? What is the final equilibrium position?

**Civics**

When the U.S. enbassy in Iran was invaded and more than 50 Americans were taken hostage, how did the United States respond? -The Senate declared war on Iran and President Carter ordered troops to invade the country. -The United States chose to isolate itself and not get involv...

**maths**

how do you decide how many boxes to draw when you split an amount of money using ratio?

**math**

About how tall is a tower i f the angle of depression from its top to a point 75 metres from the base is 62 degrees?

**Civics**

I apologize for the error in my question. It's "socialist direct democracy" which would directly influence the economy. Thoughts Ms. Sue??

**Civics**

Would it be possible to have a social direct democracy? -No, in a socialist society only a few high-ranking member of the communist party have political power. -No, a direct democracy requires a free market economy which is not socialist. -Yes, if everyone voted on economic de...

**calculus**

A parabola ,f, intersect the x axis at A and B and the y axis at C. The axis of symmetry of the parabola has the equation x=-3.The line through A and C has the equation g(x)=x+7. Determine the coordinates of A,B and C

**physics**

A skateboarder, with an initial speed of 4.2m/s , rolls virtually friction free down a straight incline of length 16m in 3.3 s.

**check answer**

From a hot air balloon, Sean looks through an angle of depression of 35 degrees to see LeAnn on the on the ground. If Sean and LeAnn are 500 ft. apart by the line of sight distance, to the nearest foot, how far is Sean off the ground? I used 500(cos55)

**Precalculus**

Records from the buzz sawmill show that workers have 0.03 probability of losing a leg and a 0.04 probability of losing an arm in any one year. Armand leg casualty insurance company plans to offer insurance policies for the workers. The company will pay $300 fir the loss of an ...

**social studies help**

Japanese American internment during World War II

**social studies help**

List 4 instances where the United States have paid reparations and note what positive impacts (if any) these payments have made regarding American racial politics.

**history**

Explain Japanese internment and what (if any) role that period plays in the racial politics and interaction of modern Americans.

**trigonometry**

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. To the nearest degree what is the angle of elevation of the airplane’s path?

**Business **

***i have to answer interviewing questions for my homework. Im stuck on how to answer them. Its just practice and can be general. What is the most difficult part of the job? What types of challenges would I face in this position/department?

**Physics**

. A weightlifter lifts a 76.0 kg barbell 2.60 m 20 times in 1.50 minutes. What is his power output (a) in watts and (b) in hp?

**math. **

Solve the double inequality 0<(x+3)/2<5

**math helpppp !**

Solve the equation and check soultion 2(13t-15)+3(t-19)=0

**physics**

A child drops a ball from a height of 10 m. Assume its acceleration increases uniformly at the rate of 10m/s2. find the velocity with which the ball strikes the ground. Find the time taken to the ball reach the ground.

**equation**

10 triples every two months

**physics**

A child drops a ball from a height of 10 m. Assume its acceleration increases uniformly at the rate of 10m/s2. find the velocity with which the ball strikes the ground. Find the time taken to the ball reach the ground.

**biology**

A bacterial strain divides once every 30 minutes. After 90 minutes, a single bacterium can form a total of ___ bacteria

**Math**

Find two quadratic functions whose graph have the given x-intercepts. Find one function whose graph opens upward and another whose graph open downdward. (-5/2,0),(-2,0)

**Math helpppp!**

Write the quadratic function in standard form and sketech its graph. Identify the vertex. h(x)=(x-6)^2+3

**algebra**

the revenues per share of stock y (in dollars) for california pizza kitchen for the years 2000 through 2009 are given by the ordered pairs. (2000, 7.86) (2001, 9.02) (2002, 10.92) (2003, 12.66)(2004,14.64) (2005,16.26)(2006,19.16)(2007,22.32)(2008,28.37)(2009,27.47)

**MATH**

The perimeter of a rectangle is 540ft. Let x represent the width of the rectangle. Write a quadratic function for the area of rectangle in terms of its width. Find the vertex of the graph of the quadratic function and interpret its meaning in the context of the problem.

**statistics**

123

**MATH**

Find two quadratic functions whose graph have given x-intercepts. Find one function whose graph opens upward and another whose graph opens downward. (-4,0) (0,0)

**physics**

acceleration = 2,84 m.s Tension = 5,18 N

**English**

Even though the programmers are ------- about their new software, they are wary of publicly ------- its capabilities until further testing. (A) anxious . . commending (B) apprehensive . . substantiating (C) confident . . disclosing (D) positive . . decrying (E) cynical . . cel...

**Physics**

Futurists project large space stations which would rotate so as to use centripetal acceleration to simulate gravity. The outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts ...

**Physics**

Astrology, that unlikely and vague pseudoscience, makes much of the position of the planets at the moment of one’s birth. The only known force a planet exerts on objects on Earth is gravitational. (a) Calculate the gravitational force exerted on a 4.20 kg baby by the Eart...

**physics**

A geosynchronous Earth satellite is one that has an orbital period equal to the rotational period of the Earth. Such orbits are useful for communication and weather observation because the satellite remains above the same point on Earth, provided it orbits in the equatorial pl...

**Math**

Thank you so much, Ms. Sue.

**Math**

15 - 6 = 9

**Math**

If 7x + 4y = 18 and 3x + y = -3, what is the value of x + y? F. 9 G. 11 H. 12 J. 14 K. 15

**Math**

Thank you very much PsyDAG.

**Math**

4( -15) = -60

**Math**

If you multiply a number by 3 and then add 40, the result is the same as if you first add 17 and then multiply by 2. What is the result if you subtract 9 from the number and then multiply by 4? A. -60 B. -72 C. -84 D. -108 E. -124

**physics**

prove that for finite length current element ?H = I/2πr(sinα2 - sinα1)aφ

**statisticsbob**

Perform a one-way ANOVA analysis, testing at the 0.05 level. Also, calculate the mean number of sick days for each group. Describe your results. But equally important, also explain what you would do if you owned your own company. Would you pay for your employers to receive Flu...

**READING**

words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,rigor,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she soon learned that her ...

**reading**

words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,rigor,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she soon learned that her ...

**reading**

words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she soon learned that her casual...

**reading**

words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,rigor,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she soon learned that her ...

**reading**

because i need help with ntrying to get the correct one. correction: succumb,digress,intermittent,squander,indispensable --please check yo see are these correct....

**reading**

words to use: curtail, devastate, digress,incentive, incorporate, indispensable,intermittent,rigor,squander and succumb.... Linda never had to work hard to make good grades in high school. But in college, where the rigors of course work were greater, she soon learned that her ...

**Math**

Hello. I need help with this question. A coin is tossed and a number cube is rolled. What is P(heads, a number less than 5 A 1/3 B 5/12 C 2/3 D 5/6 Based on the Info given, i can not figure out the answer to this question.

**reading**

succomb means?

**math**

If money can earn 5.25% compounded monthly, what is the value of an annuity consisting of annual payments of $2500 continuing for 16 years? The first payment will be received today.

**Physics**

An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of for 3.90 s, exhausting a negligible mass of fuel relative to the 95,000-kg mass of the shuttle. (a) What is the impulse of the force for this 3.90 s? (b) What is the shuttle’s change in...

**calculus**

The Audubon Society at Enormous State University (ESU) is planning its annual fund-raising "Eat-a-thon." The society will charge students 90¢ per serving of pasta. The only expenses the society will incur are the cost of the pasta, estimated at 20¢ per serv...

**MATH**

1. The table shows the results of spinning a four-colored spinner 50 times. Find the experimental probability and express it as a decimal. P(not red) = ? red | blue | green | yellow ---------------------------------------- 20 | 10 | 9 | 11 (1 point) a 0.6 b 0.4 c 0.2 <-----...

**Math**

HM... I thought it's 4 x 7 = 28.

**Math**

Ansgar is writing a novel. He writes seven days a week. On each of those days he write for at least 4 hours but never more than 8 hours. Last week, he wrote for exactly 46 hours. What is the maximum number of days on which he could have written for 8 hours? A. 2 days B. 3 days...

**Math**

I need to write the standard equation for the circle that passes through the points: (-5,0) (0,4) (2,4) I have to use the general equation for a circle: x^2+y^2+dx+ey+f=0

**Chemistry**

How many grams of HCl are needed in order to make 0.500 liters of a 0.100 M HCl solution? 1.82 g 18.2 g 0.500 g

**wdwd**

least positive value of csc(4 theta +3) sin( 5 theta - 6) =1

**algebra**

Find the product. -3m (m + 8)

**Math**

5x^2 + 6 - 4x + 9x^2 + 17x 5x^2 + 9x^2 are like terms. -4x + 17x are like terms. Combine those like terms. So: 14x^2 + 13x + 6 Same applies with the second expression.

**Math**

It looks like all you have to do is combine like terms and right them in standard form, from largest variables to smallest, ex. 4x^2 + 3x - 3.

**Math**

14x^2 + 13x + 6 And -4x^2 + 2x + 3

**Math**

A 25-foot ladder stands against a vertical wall at an angle of n degrees with the ground. If sin n = 4 / 5, how far is the base of the ladder from the wall? A. 12 B. 13 C. 14 D. 15 E. 16

**Algebra **

If Tom Bombadil's house is 12 miles east of Hobbiton and 16 miles south, what is the straight line distance (omit units) Where do I start ?

**maths**

Show the jumps of five in counting from one to hundreds.

**Algebra**

Simplify (x+3/x^2 -36/x+3) / (x+3/x)

**Algebra **

How did I approach this problem ? You are offered two different sales jobs. The first company offers a straight commission of 3% of the sales. The second company offers a salary of $ 420 per week plus 2% of the sales. How much would you have to sell in a week in order for the ...

**Algebra**

Thank You.. However I entered this in my online homework and the computer said it was incorrect. It said that I should be entering a LIST of numbers but I am not sure what they mean by that

**Algebra **

How did I approach this problem ? You are offered two different sales jobs. The first company offers a straight commission of 3% of the sales. The second company offers a salary of $ 420 per week plus 2% of the sales. How much would you have to sell in a week in order for the ...

**grammar**

Which is correct? apostrophe "s" or no??? Sam wanting to rule the country sparks great controversy. or Sam's wanting to rule the country sparks great controversy.

**English**

Which sentence uses lie or lay correctly? (1 point) Please lay your pencil on top of your notebook.<---- On Sunday afternoons I often lay down for a nap. Just lie those newspapers on the kitchen counter. Last night I lay in bed for hours before I fell asleep.

**Biology**

What are the similarities between virus and retrovirus?

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