Wednesday

July 1, 2015

July 1, 2015

Total # Posts: 280

**Physics - Equalibrium**

Three Fixed pulleys with a common center have the following radi of Ra=16cm, Rb=24cm and Rc=36cm with the applied forces <- Fc; /Fa (pointing southwest); and Fb (pointing southeast). Find the Resultant Torque given Fa=25N; Fb=75N; and Fc=120N.
*June 24, 2015*

**Physiscs 222**

The inner and outer surfaces of a cell membrane carry a negative and positive charge respectively. Because of these charges, a potential difference of about 70*10-3 V exists across the membrane. The thickness of the membrane is 8.0*10-9 m. Assumption the membrane has a ...
*June 15, 2015*

**Physics - Dynamics**

(ZYX)If the coefficient of friction is 0.85 for a 2500 kg car against asphalt, then what applied horizontal friction force would be necessary to decelerate the car at 6.0 m/s^2? Also, what would be the stopping distance if the vehicles original speed is 25 m/s?
*June 12, 2015*

**Social Studies**

Thank You
*April 22, 2015*

**Social Studies**

New Answers 6B 10A
*April 22, 2015*

**Social Studies**

@Mrs.Sue please help
*April 22, 2015*

**Social Studies**

Sorry can't edit post A to D from top to bottom at Mrs.Sue
*April 22, 2015*

**Social Studies**

@Mrs.Sue
*April 22, 2015*

**Social Studies**

Answers 1C 2C 3C 4B 5C 6A 7A 8D 9A 10C
*April 22, 2015*

**Social Studies**

Answers C C C B C A A D A C
*April 22, 2015*

**Social Studies**

1. Which is a key factor that affects the climate of mountainous Latin America? (2 points) • snow • El Niño • elevation • sea breezes 2. Which statement best describes the economies of Central America? (2 points) • Central America's economy ...
*April 22, 2015*

**Math**

Explain how you could write 35% as the sum of two benchmark prevents or as a multiple of a percent.
*March 17, 2015*

**algebra**

I am confused on how to solve this. 4/(x+4) + 4/5 =5/2
*February 23, 2015*

**Health**

hello? ^^^
*February 19, 2015*

**Health**

Large cigars contain ________ grams of tobacco compared to small cigars that contain about 1 gram of tobacco. A. 10 to 15 B. 5 to 20 C. 1 to 5 D. 15 to 20 I think it's B.
*February 19, 2015*

**Health**

thanks
*February 18, 2015*

**Health**

wrong question this is the right one Mutual-help groups are popular such as, Alcoholics Anonymous because people can attend MHGs as frequently and for as long as they want ________. A. Without insurance B. Without divulging personal information C. Without being locked into a ...
*February 18, 2015*

**Health**

Federal legislation placed new emphasis on solving America’s alcohol problems and created the NIAAA. What does NIAAA stand for? A. National Institute for America’s Alcohol Abuse B. National Institute for Alcoholism and Alcohol Abuse C. National Institute on ...
*February 18, 2015*

**Health**

never mind i got it lol
*February 18, 2015*

**Health**

I think Its .D
*February 18, 2015*

**Health**

Federal legislation placed new emphasis on solving America’s alcohol problems and created the NIAAA. What does NIAAA stand for? A. National Institute for America’s Alcohol Abuse B. National Institute for Alcoholism and Alcohol Abuse C. National Institute on ...
*February 18, 2015*

**physics**

How fast do you need to swing a 180-g ball at the end of a string in a horizontal circle of 0.6-m radius so that the string makes a 33∘ angle relative to the horizontal?
*February 9, 2015*

**Legal Research Studies**

Nisha? Whose that? Anyways I also think it's focus because my text book mentions focus but doesn't not really state it.
*January 13, 2015*

**Legal Research Studies**

Which of the following services is only available on LexisNexis? A. KeyCite B. WestCheck C. LOCATE D. FOCUS I believe the answer D.
*January 13, 2015*

**Physics**

how much work is done to drag a 25kg sled 80m?
*January 4, 2015*

**Physics**

a 4 kg object is taken to a planet that has 3 times the mass of earth and 1/2 the radius of earth. On this planet the mass of the object will be most nearly.. A. 12kg B. 3kg C. 48kg D. 4kg E. 24 kg
*January 4, 2015*

**health**

need help!!!!!
*November 27, 2014*

**health**

A. Moderately suppresses B. Severely suppresses C. Lightly suppresses D. Boosts
*November 27, 2014*

**Math**

The temperature on one day in January for Phoenix, AZ, is 60 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -29 degrees Fahrenheit. What is the difference between these two temperatures?
*November 23, 2014*

**Plane and Spherical Trigonometry**

A man walks 20 meters from point A to point B, Then he turns 80 degrees and walks 35 meters towards point C. How long is the distance AC? Draw the triangle
*October 2, 2014*

**Physics-half way fin.**

Agreed. a) h = 62.5 m = 6.3 x 10^1 m b) PE = mgh =(52)(9.8)(62.5) = 31850 j = 3.2 x 10^4 J
*June 21, 2014*

**Physics**

Any chance you got the answer to this question? I have a professor who gave me a homework question that is IDENTICAL to this minus a few figure changes. I cant seem to figure out the formula for the galaxy rotation.
*June 18, 2014*

**Math**

The batteries from a certain manufacturer have a mean lifetime of 890 hours, with a standard deviation of 90 hours. Assuming that the lifetimes are normally distributed, complete the following statements.
*June 8, 2014*

**help!! Chemistry**

Zn + VO3 ^- --> Zn ^2+ + V^+3 Fe ^2+ + H2O2 + OH- --> Fe (OH) 3 V2O5 + I- + H^+ --> VO2 + I2 + H20 P + H+ + NO3- + H2O -->'NO + H3PO4 RedOX REACTIONS
*June 6, 2014*

**Help Chemistry**

Like redox reactions
*June 6, 2014*

**Help Chemistry**

Zn + VO3 ^- --> Zn ^2+ + V^+3 Fe ^2+ + H2O2 + OH- --> Fe (OH) 3 V2O5 + I- + H^+ --> VO2 + I2 + H20 P + H+ + NO3- + H2O -->'NO + H3PO4
*June 6, 2014*

**Chemistry **

Zn + VO3 ^- --> Zn ^2+ + V^+3 Fe ^2+ + H2O2 + OH- --> Fe (OH) 3 V2O5 + I- + H^+ --> VO2 + I2 + H20 P + H+ + NO3- + H2O -->'NO + H3PO4
*June 6, 2014*

**algebra**

20x^2
*June 6, 2014*

**Science Please Help Me**

Did you get all of them right on the test
*June 3, 2014*

**Chemistry**

At a temperature of 23.0 degrees celcius, and a pressure of 2.25 bar what volume would 23.0 g of a compound in the gaseous state with a molecular mass of 207 g/mol occupy?
*May 27, 2014*

**Chemistry HELP**

Why AgNO3 and Na2SO4
*May 26, 2014*

**Chemistry HELP**

you have 12.56 g of a mixture made up of sodium chloride and barium chloride. explain how you could use a precipitation reaction to determine how much of each compound the mixture contains
*May 26, 2014*

**Algebra**

3.33ft
*March 18, 2014*

**math**

A math problem in a workbook says to write a number sentence you could solve using these doubles. 35+35 The answer is supposed to be ____ + ____ = ____ What is the answer they are looking for???
*February 27, 2014*

**java programming**

P.S. I was able to import the file in the first class, but I'm stuck at step one on the second class
*February 17, 2014*

**java programming**

I have to make two classes, one is to import a file and display the integers in the file. The other class has to take the integers from the first class and use them to calculate things like the average, the highest, the total, and I am completely stumped...please help!!!
*February 17, 2014*

**Algrebra**

with a tailwind, a bird flew at a ground speed of 3 mi/h. Flying the same path against the same wind, the bird travels at a ground speed of 1.5 mi/h. What is the bird's air speed? What is the wind speed?
*January 21, 2014*

**Math**

1.5 hours
*November 20, 2013*

**Calculus**

The top and bottom margins of a poster are 2 cm and the side margins are each 4 cm. If the area of printed material on the poster is fixed at 386 square centimeters, find the dimensions of the poster with the smallest area.
*November 18, 2013*

**Computer Programming**

Implement the classic “Rock, Paper, and Scissors game” using following methods: Headers of the methods are shown public static void printMenu( ) It is a void method –It uses no parameters --It is called to display choices and code (1 for Rock, 2 for Paper, and 3...
*November 14, 2013*

**Calculus**

Consider the function f(x)=4(x-5)^(2/3). For this function, there are two important intervals: (-Inf, A) and (A, Inf) Where A is a critical number. Find A
*November 5, 2013*

**Calculus**

Consider the function f(x)=-2x^3+33x^2-108x+2. For this function, there are three important intervals: (-Inf,A], [A,B], [B,Inf) where A and B are the critical points. Find A and B and for each of the important intervals, tell whether f(x) is increasing or decreasing.
*October 29, 2013*

**math**

So the fish is moving 7 miles but falls back 5 miles each full day. 7-5= 2 25/2= 12.5 It would take the fish 12.5 days to move 25 miles.
*October 29, 2013*

**Calculus**

Find all numbers c that satisfy the conclusion of Rolle's Theorem for the following function. If there are multiple values, separate them with commas; enter N if there are no such values. f(x)= x^2-10x+3, [0,10]
*October 28, 2013*

**Calculus**

Evaluate the limit. as x approaches infinity, lim sqrt(x^2+6x+3)-x
*October 22, 2013*

**Calculus**

If f(x) = 2sin(5x)arcsin(x), find f'(x).
*October 21, 2013*

**Calculus**

Find the derivative of the function. g(x) = (e^x)/(3 + 3x)
*October 14, 2013*

**Calculus**

Let f(x) = 6sin(sin(x^5)). Find f'(x)
*October 9, 2013*

**Calculus**

Gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 18 feet high? (Recall that ...
*October 9, 2013*

**Calculus**

The top of a 24 foot ladder, leaning against a vertical wall, is slipping down the wall at the rate of 4 feet per second. How fast is the bottom of the ladder sliding along the ground when the bottom of the ladder is 7 feet away from the base of the wall?
*October 8, 2013*

**Calculus**

Find the slope of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at point (-3,-1).
*October 8, 2013*

**Calculus**

A baseball diamond is a square with sides of length 90 ft. A batter hits the ball and runs toward first base with a speed of 21 ft/s. At what rate is his distance from second base changing when he is halfway to first base? At what rate is his distance from third base changing ...
*October 8, 2013*

**Calculus**

A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec. How fast is the tip of her shadow moving when she is 50 ft from the base of the pole.
*October 8, 2013*

**Economics**

1. The law of diminishing returns implies that at some output level: a) Marginal cost must fall b) Average total cost must diminish c) profit increases d) Marginal cost must rise e) Total cost must fall 2. The vertical distance between total cost curve and total variable cost ...
*September 30, 2013*

**math 4th grade**

Not sure what to do here? Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
*September 19, 2013*

**algebra**

Thanks!
*September 19, 2013*

**algebra**

Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Naomi have?
*September 19, 2013*

**macroeconomics**

d. consumer surplus increases
*September 6, 2013*

**math**

use the digits 3, 7, 1, 5 to write a number that rounds to each of the following; 2, , 3,500, 6,000, 7,400
*August 19, 2013*

**history**

what factors influenced the renaissance
*August 17, 2013*

**History**

Who are the amerindians
*August 17, 2013*

**History**

Give reasons why history is important
*August 15, 2013*

**math **

Find the difference between the sum of 378 and 401 and the product of 43 and 17
*June 30, 2013*

**mathematics**

Express this ratio in its simplest form $6:72
*June 30, 2013*

**Mathematics**

The nearest star to our solar system, is 4.3 light-years away Express this distance in miles in scientific notation
*June 29, 2013*

**Chemistry**

50.0 mL of 0.116 M NaOH is titrated with 0.0750 M HCl. Calculate the pH after the addition of 5.0 mL volume of acid.
*May 1, 2013*

**Science ASAP**

yeah i would agree with kaylin
*March 17, 2013*

**Math**

3n/(n2 -7n + 10) - 2n/(n2-8n+15) thanks
*March 14, 2013*

**math**

Eric practiced piano and guitar for a total of 8 hours this week he practiced piano for 1/4of that time how many hours did Eric practice the piano
*March 11, 2013*

**Math Statistics**

The sorting algorithm known as bogosort can be described in pseudocode as: while not isSorted(input): shuffle(input) If we feed bogosort a shuffled array of length n of unique items the distribution of the number of times bogosort checks if the array is sorted (...
*February 23, 2013*

**Math**

In a computer lab there are two dierent printers. From 1pm-2pm Printer1 receives on average 12 print jobs and Printer2 receives on average 5 print jobs. Assume the number of print jobs requested on Printer1 and on Printer2 are independent of each other. (a) Defi ne random...
*February 23, 2013*

**physics**

Calculate the speed of a proton having a kinetic energy of 1.00 × 10^−19 J and a mass of 1.673 × 10^−27kg. Answer in units of m/s
*February 21, 2013*

**Chemistry**

You weigh out 1.20 g of sodium carbonate monohydrate, dissolve it in water and react it with 15.00 mL of 2.00 M HCl. Write an equation for the reaction and calculate the expected mass of carbon dioxide that will be produced.
*February 14, 2013*

**Chemistry**

How many moles of bromine are there in a 0.35 mL dichloromethane solution of 10% bromine? Density of Bromine = 3.10g/mL Density of dichloromethane = 1.33g/mL
*January 24, 2013*

**algebra**

tortious and hare race traveling at the same speed the tortoise finishes first. The toroise travels in a steady strate line begins at zero goes 32 miles in 50 minutes how would I write this in an equation
*January 7, 2013*

**math**

if I know the kinetic friction and the weight of the chair how do I find the force I need to push the chair ?
*December 27, 2012*

**physics**

A plane cruising at 251 m/s accelerates at25 m/s2 for 9 s.What is its final velocity?Answer in units of m/s
*December 17, 2012*

**algebra**

(0,0)(2,10)(4,20)(6,30)
*December 16, 2012*

**Physics**

Use the equation Area = Volume / (velocity)x(time) Rearrange the equation to solve for velocity. So, (9.2x6.0x4.0) / (Pi)(0.19)^2(1080) So, the answer is 1.8m/s
*November 3, 2012*

**calculus **

g(x)= (((x-1)/x)-1)/((x-1)/x) Simplify and state the domain.
*October 29, 2012*

**math**

Chelsie saves 1/5 of her allowance and spends 2/3 of her allowance at the mall. What fraction of her allowance remains?
*October 22, 2012*

**Math**

There are 4 more girls in Mrs. Chang's class than Mr. Blackwell's class. Five girls moves from Mr. Chang's class to Mr. Blackwell's class. Now there are twice as many girls in Mr. Blackwell's class as there are in Mrs. Chang's. How many girls were in Mr...
*October 8, 2012*

**Maths**

42 divided by 7 = 6 1 unit=6 6*42=
*September 30, 2012*

**physics**

A hot-air balloon has just lifted off and is rising at the constant rate of 1.51 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. A friend picks it up and tosses it straight upward with an initial speed of 13.00 m/s. If the passenger is 2.68...
*September 8, 2012*

**physics**

A hot-air balloon has just lifted off and is rising at the constant rate of 1.51 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. A friend picks it up and tosses it straight upward with an initial speed of 13.00 m/s. If the passenger is 2.68...
*September 8, 2012*

**physics**

In an action movie, the villain is rescued from the ocean by grabbing onto a ladder hanging from a helicopter. He is so intent on gripping the ladder that he lets go of his briefcase full of counterfeit money when he is 126.4 m above the water. If the briefcase hits the water ...
*September 7, 2012*

**Physics**

When the sun is 30.4 degrees above the horizon, you measure the shadow of a tree to be 52.9 meters long. How tall is the tree?
*September 7, 2012*

**Physics**

In the figure below, a spider is resting after starting to spin its web. The gravitational force on the spider is 0.167 N on the junction of the three strands of silk. The junction is supported by different tension forces in the two strands above it so that the resultant force...
*September 5, 2012*

**Chemistry**

Yes you're correct. b) 1 isomer c) 2 isomers (cis and trans) It helps to rotate the 3 dimensional shapes in your head
*May 31, 2012*