Saturday

January 31, 2015

January 31, 2015

Total # Posts: 458

**Physics**

A mass is stretched 4cm from equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force? A. It halved. B. Same C. Increased by 4 D. Decreased by 4
*June 17, 2012*

**Physics**

If you know that the period of a pendulum is 1.87sec. What is the length of that pendulum? (gravity 9.81m/sec squared)
*June 17, 2012*

**Physics**

Two balls undergo inelastic collision. The y-momentum after the collision is 98 kilogram meters/second, and the x-momentum after the collision is 100 kilogram meters/second. What is the magnitude of the resultant momentum after the collision?
*June 15, 2012*

**College Physics**

thank you very much for your help M Bil
*May 31, 2012*

**College Physics**

A golf ball is it with the initial velocity of 50.0 m/s at an angle of 55 degrees above the horizontal. (a) How high will the ball go? (b) What is the total time the ball is in the air? (c) How far will the ball travel horizontally before it hits the ground?
*May 31, 2012*

**Earht Science **

To bobpursley, the half life is 40.(potassium 40)
*May 9, 2012*

**Earth Science**

How long will it take for Potassium to have a 25% of oringinal radioactive product left?
*May 9, 2012*

**english**

In comparison to the 17th century, the 18th century was ______. A. more internally stable; however, lesser rebellions and issues still occurred within Great Britian. B. much more violent; workers' riots and rebellions led to large numbers of deaths. C. filled with ...
*May 8, 2012*

**Adult Development and Life Assessment**

conventional morality
*March 24, 2012*

**Math Finite **

Experiment: roll a fair die and flip a fair coin. What is the probability is that you roll a 3 and flip a head?
*March 19, 2012*

**physics**

a star has a mass of 2.0 10 30kg and a radius of 3.4*106m. what is its average density in kg/m3
*March 15, 2012*

**math**

using two fair dice, what is the probability of rolling a sum that exceeds 4?
*March 12, 2012*

**math**

Write expression for the other five trigonometric ratios for each acute angle: A) cscƒÆ=a/b B) secƒÀ= x+1/x-1, x‚1
*February 24, 2012*

**accounting**

You notice that your accounts receivable days have doubled in the first six months of this year. Do you give the A/R Director a bonus or put him/her on probation? Why? Explain fully what questions you would ask the Director about the A/R and why it has doubled.
*February 22, 2012*

**physics**

850N/(3r)^2= 850/9r^2=94.4 Newtons
*February 22, 2012*

**physics**

Take the weight and divide it by 9.
*February 22, 2012*

**Math**

8. If all 5 beads are red, only 1 bracelet can be formed. If 4 beads are red and 1 is blue, only 1 bracelet can be made. If 3 beads are red and 2 beads are blue, 2 different bracelets are possible: the blue beads together or separated by the red beads. The symmetry in this ...
*January 29, 2012*

**Math**

5. The only sequences that are both arithmetic and geometric are constant sequences, in which all the terms must be the same. For us to have a sum of 20, each term of the sequence must be 5. We can show this algebraically by solving the system of equations a + d = ar and a + ...
*January 29, 2012*

**Math**

25. The sum of a penny, a dime, and a quarter is 36 cents. The number 36 factors into 2²•3². To get an integral value in dollars, we must multiply by 5² so that the product ends in two zeroes. Any multiple of 25 will work, but 25 is the least of those values.
*January 29, 2012*

**pysics**

A river is one mile wide and the water flows at the rate 3 miles/hour. If you can paddle a canoe 5 miles/hour in still water, then how long will it take you to paddle across the river and back? How long would it take you to travel one mile upstream (measured along the bank) ...
*January 26, 2012*

**science**

What effect will the current governmental initiatives that focus on expanding health care coverage to more Americans have on health care costs and health care services in the United States? What would you add or subtract from the recently approved healthcare bill?
*January 24, 2012*

**Math **

What equation do I use to find out what I need to get on my exam to pass my class. I have a 65.9% and the exam is 20% of my grade....if you need any additional information let me know..... also a passing grade is 59.5
*January 17, 2012*

**chemistry**

At a pressure of 1.7 atm a balloon has a volume of 4.98 L . If the pressure is decreased to 1.0 atm (at constant temperature) what is the new volume of the balloon?
*December 14, 2011*

**Chemistry**

Do I need to first figure out the PH? I believe that a= 3 and b=2.87 therefore it will require more naoh to titrate the acetic acid. I am not sure i figured the ph of acetic acid correctly, or if i am on the correct path here...
*December 9, 2011*

**Chemistry**

Suppose you have two solutions to titrate with NaOH: (a) 10 ml of.1M HCL (b) 10 ml of .1M CH3COOH would you expect either of the solutions to require different volumes of NaOH in order to reach an end point? Explain
*December 9, 2011*

**MEANING**

What is the meaning for vagaries.also give me a sentence for it.
*December 6, 2011*

**meaning**

what does the word vagaries mean.Also put a sentence for it
*December 6, 2011*

**calculus**

An annuity has a differential equation of y'=4500+.035y, and an initial condition of y(0)=1000. Describe what is going on.
*December 1, 2011*

**chemistry**

6.022 x 1023 atoms. Thank you Dr Bob222
*November 30, 2011*

**chemistry**

How many atoms are in 95.96 g of molybdenum (Mo)
*November 30, 2011*

**Physics!**

The following four forces act on 4.00 kg object: F1 = 300 N east F2 = 700 N north F3 = 500 N west F4 = 600 N south What is the acceleration of the object?
*November 1, 2011*

**Physics**

A 1000-kg car is driving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the car comes to a rest in a distance of 140 m. What is the constant force applied to the car to bring it to rest?
*November 1, 2011*

**math**

What Is the ture math relationship using the numbers 1,1,1,10,7,8 ,5 to make it 1 or equal to one in fractions?
*October 27, 2011*

**Pre-Algebra**

suppose the projector is moved to a point 9 ft from the screen. what size will the picture be (width, height, and area) please help
*October 26, 2011*

**Home Insurance**

its D
*October 23, 2011*

**Math/Calculus**

After 5 days, a particular radioactive substance decays to 37% of its original amount. Find the half life of this substance. Is this right? Th= ln 2/ln(1/.37) x 5 days
*October 17, 2011*

**Accounting**

I have added Below my balance sheet and income statement now the statement of owners equity is the beginning capital 28,2800 plus the net income 21,550 which is 49,750 less withdrawals 5,000 equals 44,750 which does not equal my assets. I cannot figure out what I am doing ...
*October 8, 2011*

**Accounting**

Sorry about that I have added Below are my balance sheet and income statement now the statment of owners equity is the beginig capital 28,2800 plus the net income 21,550 which is 49,750 less withdrawls 5,000 equals 44,750 which does not equal my assets. I cannot figure out ...
*October 8, 2011*

**Accounting**

Statement of Owner's Equity I've tried to get it to balnce with the amount of on my balance sheet of $54,500.00 but can not can you help Cash… …… ……… … … … ………$21,500 Accounts Receivable………17,...
*October 8, 2011*

**help please :-)**

Could be both a and B
*September 28, 2011*

**help please :-)**

its the supporting details
*September 28, 2011*

**math**

solve. (3k+4.2)+8.6 and (3s)x8
*September 19, 2011*

**Science economic**

Cesium 138 has a half life equal to 32.2 minutes. how long will it take for 2/4 of this sample to decay
*September 5, 2011*

**vocab**

i need hel because i dont know how to use indignation in a sentence and it make sense!
*August 21, 2011*

**math**

2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3. Simplify. Please show all of your work 9c^3+7c-(3c^3-12+c) 4. Solve 4x- 3(5x-8) =23-9(x+2) . Please show all of your work 5. Solve the following equation for z. Please show all of your work. x...
*August 15, 2011*

**math**

Solve. Please show all of your work. Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.
*August 15, 2011*

**math**

Solve 4x- 3(5x-8)=23-9(x+2) . Please show all of your work
*August 15, 2011*

**math**

Simplify. Please show all of your work 9c^3+7c-(3c^3-12+c)
*August 15, 2011*

**math**

Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3|
*August 15, 2011*

**math**

Simplify. Please show all of your work. 12* 1/4 +2/-2^3
*August 15, 2011*

**math**

Write the slope-intercept equation for the line with the given slope that contains the given point m = 3/4 ; (0, 5)
*August 15, 2011*

**math**

Write a slope-intercept equation of the line whose graph is described Parallel to the graph of 3x + 2y = 5; y-intercept (0, −1)
*August 15, 2011*

**math**

Four-year -college tuition. The average tuition at a public four-year college was $3983 in 2001 and $5948 in 2005. Find the rate at which tuition was increasing.
*August 15, 2011*

**math**

Determine if(3/8-1 is a solution to 8x-7y=10. Please show all of your work
*August 15, 2011*

**math**

4. Translate to an equation: p $25 potted plants and s $20 shrubs total $300 Graph the equation and use the graph to determine three different combinations of potted plants and shrubs that total $300. Submit your graph through the dropbox.
*August 14, 2011*

**Math**

Find the x- and y-intercepts and graph the equation plotting the intercepts. Please show all of your work. Submit your graph to the Dropbox 2x-3y=9
*August 14, 2011*

**math**

(8/3-1) is a solution to 8x-7y=10 . Please show all of your work
*August 14, 2011*

**algebra**

Can you sketch the y=x+9 equation?
*August 12, 2011*

**maths**

Starting from one oasis, a camel walks 25km in a direction 30 degrees south of west and then walks 30km toward the north to a second oasis. What distance separates the two oases?
*June 6, 2011*

**english**

What correction should be made to this sentence? Today's hikers prefer a shoe that is six inches high, is made of leather, and thick sturdy composition soles.
*June 4, 2011*

**algebra 1**

determine whether the graphs will be parallel,perpendicular, or neither...... y=2/3x-6 2x-4=3y
*May 28, 2011*

**Science**

What are the theoretical molar ratio values for Ag:Cu and Ag:AgNO3? Compare these values to the values you got in your experiment and compute a percent error for your work.
*May 27, 2011*

**Math**

If two number cubes are rolled, what is the probability of getting at least one even number?
*May 18, 2011*

**MATH**

In the equation 4*ABCDE= EDCBA each letter represents a different nonzero digit. Determines the sum A+B+C+D+E i don't know how to do this
*May 6, 2011*

**Math**

Given a+b+c+d=45 and a+2=b-2=2c=d/2 compute a+b+c-d
*May 6, 2011*

**healthcare**

What effect will the current governmental initiatives that focus on expanding health care coverage to more Americans have on health care costs and health care services in the United States? What would you add or subtract from the recently approved healthcare bill?
*April 30, 2011*

**government**

Younger Citizens
*April 27, 2011*

**precalc**

dont know how to find the derivitive
*April 1, 2011*

**precalc**

find an equation of the tangent line to the parabola at the given point..show work y=(-2)x^2 (-1,-2)
*April 1, 2011*

**physics**

Why does a gas become hotter when compressed by a piston in a cylinder?
*March 31, 2011*

**calculus**

can you please help me solve this problem if dy/dx=ycosx and y=3 when x=0, then y=
*March 20, 2011*

**calculus**

if dy/dt=-3y and if y=1 when t=0, what is the value of t for which y=1/3?
*March 20, 2011*

**calculus**

is the answer to find an equation of the curve that passes through the point (1,1) and whose slope at (x,y) is y^2/x^3 is y=2x^2-1
*March 20, 2011*

**physics**

1.) A small sphere of charge 2.4 μC experience a force of 0.36 N when a second sphere of unknown charge is placed 5.5 cm from it. What is the charge of the second sphere? 2.) Two identically charged sphere placed 12 cm apart have an electric force of0.28 N between them. ...
*March 20, 2011*

**precalc**

Find the vector v with the given magnitude and the same direction as u. ||v||=7, u=3i+4j
*March 13, 2011*

**reading**

In 1984 by George Orwell, what do the 3 slogans (war is peace, ignorance is strength, freedom is slavery) mean? I would like to know what EACH suggests about the society. And how is the society able to get people to accept them as logical. I was thinking that they chose ...
*February 28, 2011*

**PHYSICS**

A 70 kg student traveling in a car with a constant velocity has a kinetic energy of 1.4 104 J. What is the speedometer reading of the car in km/h?
*February 20, 2011*

**Maths - Calculus **

Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try and understand? f(t) =3-t^4 and g(t)=sin(4t) Then using the Quotient Rule differentiate the function k(t) 3-t^4/ sin(4t) (0<t< pie)
*February 13, 2011*

**Maths - Calculus **

Can anyone help with this...I need to find the derivative of the functions below. If possible please show working so I can try and understand? f(t) =3-t^4 and g(t)=sin(4t) Then using the Quotient Rule differentiate the function k(t) 3-t^4/ sin(4t) (0<t< pie)
*February 13, 2011*

**Physics**

Hey, I thought about it a little more and I have your answer here. B = mu(naught) * I / (2pi * r) You can solve for I in that equation. I hope it looks familiar. mu(naught) = vacuum permeability I = current r = radius of wire
*February 10, 2011*

**Physics**

I won't be able to answer exactly, but we know that the net force on the wire would be zero. So it means that Force(gravity) = Force(magnetic)
*February 10, 2011*

**English**

What is a characteristic to describe a person who always follows a schedule? What is a characteristic to describe someone who always follows the law?
*February 6, 2011*

**English**

What is a characteristic to describe a person who always follows a schedule?What is a characteristic to describe someone who always follows the law?
*February 6, 2011*

**geometry**

I have a perimeter of 15. I am not a square . Each of my sides is 3 units long. What shape am i?
*February 3, 2011*

**chemistry**

how long will it take to decompose 38% of A at 25 degrees celsius?
*January 30, 2011*

**Physics**

The gravitational potential difference between the surface of a planet and a point P, 10 m above the surface, is 8.0 J kg-1. Assuming a uniform field, what is the value of the gravitational field strength in the region between the planet’s surface and P?
*January 19, 2011*

**Physics**

Two objects of equal mass m are separated by a distance r. Which expression gives the gravitational potential at the point P mid way between the two objects? The answer shows as -4Gm/r, but I can't see where this comes from.
*January 11, 2011*

**Physics**

A block weighing 6.8 N requires a force of 2.5 N to push it along at constant velocity. What is the coeﬃcient of friction for the surface? A weight W is now placed on the block and 4.6 N is needed to push them both at constant velocity. What is the weight W of
*January 8, 2011*

**chem**

When an electric discharge is passed through boron trichloride a new compound is formed. what is its simplest formula if on analysis it is shown to contain .0878 g of chlorine and .0131 g of boron?
*December 15, 2010*

**chem**

a 6.54 g sample consisting of a mixture of silver nitrate and sodium nitrate is dissolved in water. this mixture then reacts with barium chloride to for 3.50 g of silver chloride. calculate the percent by mass of silver nitrate in the first mixture
*December 14, 2010*

**physics**

9 m/s2
*November 26, 2010*

**chemistry**

What would happen if 50 grams of carbon fully reacted to oxygen?
*November 16, 2010*

**Chemistry**

how do you do this problem?!
*November 14, 2010*

**Stats**

A car insurance company has determined that 7% of all drivers were involved in a car accident last year. The company randomly selects 200 drivers. Compute the mean and standard devistion of the random variable, x, the number of drivers involved in accidents last year.
*November 5, 2010*

**physics**

S=u^2/2µs(g) S=(20.1168m/s)^2/2*.602*9.8 S=34.298m
*November 1, 2010*

**physics**

45 mi/h = 20.1168 m/s ma= .100n a = .100(g) solving for time v=vo + at 20.1168m/s=0+.98(t) t=20.527s solving for distance d=do+vot+at^2/2 d= 0+0+.98(20.527s)^2/2 d= 206.469m
*November 1, 2010*

**chemistry**

Cu + 2AgNO3-->Cu(NO3)2+ 2Ag 3.50/2 <--3.50
*October 30, 2010*

**English---meaning??**

"Submit a myth, or story, whose origins stem from your specific culture." what does specific culture mean??? For that requirement, what do I have to do???
*October 30, 2010*

**Math 8th grade algerbra**

How is the ratio of the volumes related to the ratio of corresponding dimensions?
*October 27, 2010*

**trig**

Find the values of the trigonmeric functions of t from the given information cos t = -4/5 terminal point of t is in quadrant III
*October 26, 2010*

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