Tuesday

September 30, 2014

September 30, 2014

Total # Posts: 71,385

**physics**

The weightless strut in the figure below is not attached to the wall; it is prevented from falling only by friction. (Let w = 360 N, L = 5.25 m and h = 3.25 m.) (a) Find the magnitude of the force of friction between the wall and the strut. (b) Find the normal force exerted by...
*June 12, 2014*

**physics**

(a) Find the force P that must be applied to a piston of area 10.60 cm2 to produce sufficient fluid pressure to support a car weighing 12,101 N by means of a column of fluid of cross sectional area 285 cm2 as seen in the figure below. F1/A1=F2/A2 F1=F2*A1/A2 12101*10.6/285 =...
*June 12, 2014*

**Science**

What is a stimulus?
*June 12, 2014*

**MATH**

what is the integration of x . e ^(-x) ? Can you please explain it :) Thanks
*June 12, 2014*

**MATH**

integration of e^(lambda.x) = ?
*June 12, 2014*

**Math**

8\7=[8\. +)
*June 12, 2014*

**Physics**

A 7.50 kg bowling ball strikes a stationary 4.50 kg bowling ball. After the collision, the 4.50 kg ball is traveling 8.50 m/s 30.0° east of north; the 7.50 kg ball is traveling 6.50 m/s 20.0° south of east. What was the initial velocity (magnitude and direction) of the...
*June 12, 2014*

**whole number**

At the end of the year, a library reported 32 books lost or stolen, and 24 books were sent out for repair. If the library originally had 1,219 books, how many were left on the shelves or in circulation?
*June 12, 2014*

**Physics**

Three resistors of value 1.0 , 2.0 and 4.0 are connected in a parallel circuit with a 6.0 V battery. a) What is the total equivalent resistance? b) What is the across each resistor? c) The power delivered to the 4.0 resistor?
*June 12, 2014*

**Physics**

3) What is the emf of a battery with an internal resistance of 0.15 if the battery delivers 1.5 A to an externally connected 5.0 resistors?
*June 12, 2014*

**physics**

A 200 – W computer power supply is on 10 hours per day. If the cost of electricity is $0.15/kWh, what is the cost (to the nearest dollar) to run the computer every day for a year (365 days)?
*June 12, 2014*

**physical science(chemistry change)**

095.5
*June 12, 2014*

**science-chemistry**

4.35*10^-2
*June 12, 2014*

**ALgebra**

1500x
*June 12, 2014*

**math**

Jacqueline Strauss, a 25- year- old personal loan officer at Second National Bank, under-stands the importance of starting early when it comes to saving for retirement. She has committed $ 3,000 per year for her retirement fund and assumes that she’ll retire at age 65. a...
*June 12, 2014*

**math**

315
*June 11, 2014*

**math**

A hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. How much cleaning solution is required to clean the hallway
*June 11, 2014*

**English**

I was wondering for ninth grade, how long should an essay on 3 of Katherina (from taming of the shrew )characteristic be. And how long should each paragraph be.. Mine is not as long as my friends so I was wondering
*June 11, 2014*

**algebra**

A pound of tin is worth $2 more than a pound of copper. Three pounds of tin are mixed with 7 pounds of copper to make bronze that sells for $3.85 per pound. How much is a pound of tin worth
*June 11, 2014*

**Math**

How would I find the derivative of (8x^3)/sqrt(3x-2)?
*June 11, 2014*

**trig**

how do you find algebraically the measure of the obtuse angle, to the nearest degree, that satisfies the equation 3 sec theta = 5 is it sec theta = 5/3 and then cos -1 (5/8) = 0.4
*June 11, 2014*

**Science**

What is the difference between conserving energy and energy efficiency? What are 5 benefits of conserving energy?
*June 11, 2014*

**math**

infinity / 8 = ?
*June 11, 2014*

**Distribution and warehousing**

The risk of distribution of goods and materials are: -Sudden scarcity of raw materials. -Rising costs due to increased demand from competitors. -Political events, such as revolutions or transportation worker strikes that may slow delivery of raw materials.
*June 11, 2014*

**Math**

If (a + b / 10) = (a - 0.1b^2 / a - b), what is the value of a? F. 0.001 G. 0.1 H. 1 J. 10 K. 100
*June 11, 2014*

**pueblo**

In ƒ¢ABC, if the lengths of sides a and c are 8 centimeters and 16 centimeters, respectively, and the measure of ÚC is 35‹, what is the measure of ÚA to two decimal places?
*June 11, 2014*

**physics**

A body is to be projected at an angle with a velocity 24m/s just to pass over an obstacle 14m high at adistance of24m.then angle is what.
*June 11, 2014*

**physics**

The weightless strut in the figure below is not attached to the wall; it is prevented from falling only by friction. (Let w = 360 N, L = 5.25 m and h = 3.25 m.) (a) Find the magnitude of the force of friction between the wall and the strut. Correct: Your answer is correct. (b...
*June 11, 2014*

**Chemistry**

what is the mass of nh4cl that must dissolve in 100. grams of h2o to produce a saturated solution at 70 degrees celsius
*June 11, 2014*

**chemistry**

if an excess of nitrogen is reacted with 3.41 g of hydrogen, how many grams of ammonia can be produced?
*June 11, 2014*

**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?
*June 11, 2014*

**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?
*June 11, 2014*

**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..
*June 10, 2014*

**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...
*June 10, 2014*

**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?
*June 10, 2014*

**Physics**

I thnk d Tension wil b T=ma+mg..m=max of load.ah may b wrong 2)force of aircraft,F=ma...
*June 10, 2014*

**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 ...
*June 10, 2014*

**Physics**

Thank You
*June 10, 2014*

**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...
*June 10, 2014*

**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?
*June 10, 2014*

**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...
*June 10, 2014*

**Math**

Who is your math teacher? I have Mr.Ryan:)
*June 10, 2014*

**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
*June 10, 2014*

**maths**

140 / 2 = ? ? - 20 = ? Answers 140 / 2 = 70 70 - 20 = 50 Girls=50 Boys= 90
*June 10, 2014*

**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.
*June 10, 2014*

**Languege arts book responce Walk Two Moons**

Thank you Gaylee, but can you tell me which chapter to look in?
*June 10, 2014*

**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
*June 10, 2014*

**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 ...
*June 10, 2014*

**world history**

D is the answer
*June 10, 2014*

**math**

0.84M
*June 10, 2014*

**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
*June 10, 2014*

**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?
*June 10, 2014*

**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 ...
*June 10, 2014*

**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 ...
*June 10, 2014*

**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 ...
*June 10, 2014*

**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 ...
*June 10, 2014*

**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?
*June 10, 2014*

**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 ...
*June 10, 2014*

**maths**

how do you decide how many boxes to draw when you split an amount of money using ratio?
*June 10, 2014*

**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?
*June 10, 2014*

**Civics**

I apologize for the error in my question. It's "socialist direct democracy" which would directly influence the economy. Thoughts Ms. Sue??
*June 10, 2014*

**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 ...
*June 10, 2014*

**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
*June 10, 2014*

**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.
*June 10, 2014*

**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)
*June 9, 2014*

**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 ...
*June 9, 2014*

**social studies help**

Japanese American internment during World War II
*June 9, 2014*

**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.
*June 9, 2014*

**history**

Explain Japanese internment and what (if any) role that period plays in the racial politics and interaction of modern Americans.
*June 9, 2014*

**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?
*June 9, 2014*

**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?
*June 9, 2014*

**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?
*June 9, 2014*

**math. **

Solve the double inequality 0<(x+3)/2<5
*June 9, 2014*

**math helpppp !**

Solve the equation and check soultion 2(13t-15)+3(t-19)=0
*June 9, 2014*

**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.
*June 9, 2014*

**equation**

10 triples every two months
*June 9, 2014*

**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.
*June 9, 2014*

**biology**

A bacterial strain divides once every 30 minutes. After 90 minutes, a single bacterium can form a total of ___ bacteria
*June 9, 2014*

**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)
*June 8, 2014*

**Math helpppp!**

Write the quadratic function in standard form and sketech its graph. Identify the vertex. h(x)=(x-6)^2+3
*June 8, 2014*

**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)
*June 8, 2014*

**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.
*June 8, 2014*

**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)
*June 8, 2014*

**physics**

acceleration = 2,84 m.s Tension = 5,18 N
*June 8, 2014*

**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 . . ...
*June 8, 2014*

**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 ...
*June 8, 2014*

**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 ...
*June 8, 2014*

**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 ...
*June 8, 2014*

**Math**

Thank you so much, Ms. Sue.
*June 8, 2014*

**Math**

15 - 6 = 9
*June 8, 2014*

**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
*June 8, 2014*

**Math**

Thank you very much PsyDAG.
*June 8, 2014*

**Math**

4( -15) = -60
*June 8, 2014*

**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
*June 8, 2014*

**physics**

prove that for finite length current element ?H = I/2πr(sinα2 - sinα1)aφ
*June 8, 2014*

**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...
*June 7, 2014*

**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 ...
*June 7, 2014*

**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 ...
*June 7, 2014*

**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...
*June 7, 2014*

**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 ...
*June 7, 2014*

Pages: <<Prev | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | **19** | 20 | 21 | 22 | 23 | 24 | 25 | Next>>