Thursday

November 26, 2015
Total # Posts: 924

**physics**

A motor boat heads east across a river at 5.1 m/s. The river flows south at 2.1 m/s. Calculate the resultant speed.
*September 3, 2012*

**physics**

A plane flies south at 220 km/h and is blown west by a 90. km/h wind. Calculate the resultant speed.
*September 3, 2012*

**physics**

A boat heads directly west across a river at 8.0 m/s while the river flows directly north at 2.0 m/s. Find VR.
*September 3, 2012*

**physics**

A 26 N force and a 42 N force act concurrently at point P. The larger force is directed north and the other acts toward the east. Calculate the resultant force acting on point P.
*September 3, 2012*

**physics**

A plane is moving east at 100. km/h while the air around it moves at 30. km/h east. Find VR and draw a vector sketch.
*September 3, 2012*

**physics**

A westward force of 12 N acting simultaneously with another westward force of 4.0 N. Find FR and show a vector sketch
*September 3, 2012*

**math**

with each array write the factor pair. Rember that the # of row in the array are one factor and that the # of columns in the array is the other factor. Continue to build every possible array until you have all the possible factors of the number. 14 is the number, list the factors
*August 29, 2012*

**math**

Is the product of 9 and twice m translated 9(2m) or 9(m+m)?
*August 23, 2012*

**Math**

Its basically just fractions times each other 1/2 x 1/2 x 1/2 = 1/8 Its 1 eighth probability So 0.125 Or 12.5% Or 1/8
*August 7, 2012*

**Literature**

#11 is not correct the answer would be- realism
*August 4, 2012*

**Calculus **

Use newtons method and the function f(x)=x^2-a to derive the mechanics rule. Mechanics Rule for approaching sqrt(a), a>0, is Xn+1=1/2(Xn+a/Xn), n=1,2,3,...
*July 20, 2012*

**Calculus**

Thanks!
*July 18, 2012*

**Calculus**

Find the point on the graph of function that is closest to the point. f(x)=x^2 (2,1/2)
*July 18, 2012*

**Epidemiology**

Can anyone answer this question? The prevalence of undetected diabetes in a population to be screen ed is approximately 1.5% and it is assumed that 10,000 persons will be screened. The screening test will measure blood serum glucose content. A value of 180mg% or higher is ...
*July 12, 2012*

**Calculus**

Find the critical numbers of y=x(4-x)^1/2. The answer is x=8/3 but I got x=7/2.
*July 11, 2012*

**economics**

people are more likely to vote....when?
*July 8, 2012*

**sports**

hi the questions are based on the National Governing bodies of sports development we were give a list to chose from and i picked NGB they were some of the questions
*June 21, 2012*

**sports**

hi i am having problems with a essay on national governing bodies. can you help me with-- 1. who awards it 2. how do you achieve it. 3. what are strenghts in terms of improving quality of sports development opportunities for participants 4. and weeknessess as in question 3. I ...
*June 21, 2012*

**sports**

hello can you help??? swim 21 --- how will it be measured to see if it is -- was it -- will it be a success. thanks
*June 18, 2012*

**Physics**

v = Sqrt(v1^2 + v2^2) v = sqrt(98^2 + 100^2) V = 140.01 V = 1.4 * 10^2
*June 15, 2012*

**Tangent Line Approximation**

Given that f(−0.5) = 2 fŒ(−0.5) = 4 , using a tangent line approximation you would estimate f(0) to be?
*June 5, 2012*

**Science/Physics**

Explain why a rapidly spinning gyroscope, mounted in a frame that allows it to rotate in any direction independently of the frame’s rotation, tends to maintain its axis pointed in the same direction in space. I just am not getting this!
*June 3, 2012*

**Chemistry**

Help!
*June 2, 2012*

**Chemistry**

Just to add, salicylic acid reacts with methanol to produce methyl salicylate and water.
*June 2, 2012*

**Chemistry**

In the presence of an acid catalyst, salicylic acid reacts with methanol to produce oil of wintergreen and water. If water is added to the solution, a precipitate is formed. Identify the precipitate and explain why it is formed. Don't understand...!
*June 2, 2012*

**Calculus**

What is the limit of the following equation? Limit as x approaches infinity of ((e^x) - ln(x)) / (x^3)
*May 31, 2012*

**Health**

The 2010 Dietary Guidelines for Americans recommends that in managing one’s weight, a person should balance calories with…? A. Healthy eating B. Physical activity C. Educating oneself about health and wellness D. Community involvement c
*May 24, 2012*

**Health**

The 2010 Dietary Guidelines for Americans recommends that in managing one’s weight, a person should balance calories with…? A. Healthy eating B. Physical activity C. Educating oneself about health and wellness D. Community involvement c
*May 22, 2012*

**physics**

A tennis ball is thrown horizontally at a speed of 10 m/s from the top of a building 78.4 meters high. How long does it take the ball to hit the street?
*May 22, 2012*

**Math**

f(x) = 4 ; x = -3, -2, -1, 0, 1, 2, 3 how do i solve this?
*May 20, 2012*

**Math**

what is the slope and y intercept of this equation? x+2=0
*May 20, 2012*

**Algebra**

give the domain of the function: f(t)= 3t²+5t+2
*May 17, 2012*

**honors chemistry**

SWS fan?
*May 17, 2012*

**honors chemistry**

The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1. The halogens exist, at room temperature, in all three states ...
*May 17, 2012*

**honors chemistry**

Their oxidation number of 0 prevents the noble gases from forming compounds readily. All noble gases have the maximum number of electrons possible in their outer shell (2 for Helium, 8 for all others), making them stable.
*May 17, 2012*

**math**

Give the slope and y-intercept of the given line. 1.2x-3y=6 2. y=-2x 3. y=3 4. x+2=0 Find the slope of the line that is a) parallel and b) perpendicular to the given line. 1. x=-8 2. y=10
*May 10, 2012*

**Homework Help**

A ruling of the FTC requires that every used car must display a(n) ________ spelling out the warranty terms under which the vehicle is offered for sale. A. vehicle identification chart B. agreement C. option chart D. buyer's guide
*May 9, 2012*

**math**

after noon would be 4 hours not 7.
*May 7, 2012*

**chemistry**

They are actually found in aqueous solutions, though they are not always written down because they form naturally. In reactions in acidic and basic equations, they are written down. The presence of hydrogen ions are actually measured by pH. They are found with hydronium ion = ...
*May 7, 2012*

**chemistry**

HCN(aq) + SO4-2(aq) HSO4-(aq) + CN -(aq) a. What is the Bronsted - Lowry acid in this equation? b. What is the Bronsted - Lowry base in this equation? c. What is the conjugate acid in this equation? d. What is the conjugate base in this equation?
*May 7, 2012*

**Honors Chemistry**

I need someone to check these questions. I know its a lot of questions. 2NH3 + Ag+ Ag(NH3)2+ a. What is the Lewis acid in this equation? [Ag+] b. What is the Lewis base in this equation? [NH3] Given H2SO4 is sulfuric acid, HNO3 is nitric acid, and H3PO4 is phosphoric acid, ...
*May 7, 2012*

**math**

A rectangular prism has 2 ends and 4 sides. Opposite sides have the same area. The surface area is the sum of the areas of all six sides. Find the area of two sides (Length*Height)*2 sides Find the area of adjacent sides (Width*Height)*2 sides Find the area of ends (Length*...
*May 7, 2012*

**Chemisrty**

How many grams of lithium metal would be produced if 0.500g of magnesium was added to a solution of lithium chloride?
*May 5, 2012*

**Chemisrty**

How many L of carbon dioxide gas will be produced from the decomposition of 5.0g of sodium hydrogen cardonate?
*May 5, 2012*

**Calculus**

Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 5 seconds. The maximum rate of air flow into the lungs is about 0.5 L/s. This explains, in part, why the function f(t)=(1/2)sin((2pi*t)/5) has often been used...
*April 27, 2012*

**calculus**

In a certain city the temperature (in degrees Fahrenheit) t hours after 9 a.m. was approximated by the function T(t) = 50 + 14sin((pi*t)/12). Find the average temperature (in degrees Fahrenheit) during the period from 9 a.m. to 9 p.m. I got (1/12)((12/pi)(50(12)-14cos((pi)))+(...
*April 27, 2012*

**sociology**

Explain the concept of socialization and highlight one agent of socialization that can be impactful on your life, stating how and why.
*April 26, 2012*

**Chemistry**

Using the solution: NaOH + HCl yields NaCl + H20 What mass of H20 would be produced by combining 10.0 mL of each reagent? Thanks for any help; it's greatly appreciated!
*April 25, 2012*

**Child Development**

When both parents believe that men are capable of nurturing infants a. mothers devote time to caregiving b. fathers devote less time to caregiving c. fathers devote more time to caregiving d. the marital relationship tends to suffer, particulary when me spend little time in ...
*April 23, 2012*

**Child Development**

thank you
*April 23, 2012*

**Child Development**

So then it is Roles maybe This lesson is kicking my butt
*April 23, 2012*

**Child Development**

Dean associates certain activies, roles, and traits as being typical for either males or females. His associations conform to cultural stereotypes and encompass many gender-linked responses. This is an example of gender A.Atypicality B.roles C.typing D.identity I think it is A...
*April 23, 2012*

**math**

m= y2 - y1/ x2-x1 m being slope
*April 23, 2012*

**Chemistry**

Solubility Rules: 1. Salts of group 1 and ammonia are soluble. 2. Acetates and nitrates are soluble. 3. Binary compounds of group 17, except F, are soluble with metals, except Ag, Hg+, and Pb. 4. All sulfates are soluble, except those of Ba, Sr, Pb, Ca, Ag, and Hg+ . 5. Except...
*April 23, 2012*

**Algebra2**

If f (x) = x² + 3 and g (x) = 3x - 1 then find the following: 1. (f/g)(x) 2. (f o g)(x) 3. (f o g)(1) 4. (g o f)(x)
*April 23, 2012*

**Algebra2**

If f (x) = x² + 3 and g (x) = 3x - 1 then find the following: 1a. (f+g)(x) 1b. (f+g)(3) 1c. (f-g)(x) 1d. (fg)(x) 1e. (fg)(-1)
*April 23, 2012*

**Life orientation**

Critically discuss 8 1ays in which the environment problem impact on the within your community or any other community whitin south Africa
*April 17, 2012*

**Algebra 2**

how do you find the slope and y intercept of: x= -3
*April 12, 2012*

**Spanish**

i need help translating these sentences. only using the verb "estar" 1. My grandfather took my brother to the university. 2. My best friend is my work colleague. 3. It's my boyfriends necktie. 4. My female cat is in the garden. 5. My male cousin and I had a ...
*April 9, 2012*

**Chemistry**

What are the rules to determine the solubility of salts?
*April 6, 2012*

**Chemistry**

1. How many molecules does 36.0 grams of water represent? Change the following masses to number of particles by: A) dividing by the molar mass to get the number of moles, and then B) multiplying number of moles by Avogadros number
*April 5, 2012*

**Chemistry**

Identify which element is being oxidized and which is being reduced Mg (s) + 2H2O (g) = Mg(OH)2 (s) + H2 (g)
*April 4, 2012*

**Geometry**

A spherical water tank has a diameter of 10 feet. How much water does it hold when half full ? ( use 3.14 )
*March 28, 2012*

**Chemistry**

Predict the characteristic of the solutions of the following salts. 1.CrBr3 2.NH4ClO4 3.NaCl 4.NiSO4 5.GaI3 6.MgC4H4O5 7.K2CO3
*March 27, 2012*

**Intermediate Algebra**

12y^4
*March 27, 2012*

**Intermediate Algebra**

1.8 * 10^6
*March 27, 2012*

**language arts**

Hi. Do you know of any poems about holidays that include word play or puns? Thanks!
*March 26, 2012*

**Algebra 2**

If f(x)= x^2 + 3 and g(x) = 3x - 1 then find the following: 1a. (f+g)(x) 1b. (f+g)(3) 1c. (f-g)(x) 1d. (fg)(x) 1e. (fg)(-1) 1f. (f/g)(x) 1g. (f o g)(x) 1h. (f o g)(1) 1i. (g o f)(x)
*March 26, 2012*

**physics**

A 3.00x10^-3 kg lead bullet enters a target with a speed of 2.00x10^2 m/s and comes to rest within the target. Calculate the rise in temperature of the bullet assuming that 80.0% of the heat produced is absorbed by the bullet. The Specific heat of lead is 1.30x10^2 J/kg K
*March 25, 2012*

**physics**

directly across from one of the speakers
*March 18, 2012*

**physics**

A student sets up two speakers spaced 2.5 meters apart, each playing the same tone of a single frequency. She stands at point P, at an equal distance from each speaker and hears the tone playing loudly. She walks towards point Q, directly opposite one speaker, and when she ...
*March 18, 2012*

**Mathematics**

A garrison of 1200 men has sufficient ratios for 25 days at the rate of 2400g per man per day. If 300 man join them and the ratios are reduced to 2000g per man per day,how long will the road last all of them? Thank you :)
*March 13, 2012*

**computers**

Which of the following html tags would you use after a table? A. </p> B. </table> C. </html> D. </end> i say b.
*February 29, 2012*

**computers**

I meant false
*February 23, 2012*

**computers**

a file with the extension of .bmp is an audio file? true or false? I say true
*February 23, 2012*

**computers**

:0 is an example of internet slang. I say true
*February 22, 2012*

**Honors Physics **

A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 290 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.1 m/s relative to the shore, and then hops onto an identical floating log that is ...
*February 22, 2012*

**computers**

the other options are date of e-mail, opening statement, or closing. my other guess would be closing
*February 22, 2012*

**computers**

what would be redundant if added to the content of an e-mail? I say purpose of e-mail
*February 22, 2012*

**computers**

what is it called when websites that look like legitimate sites are used to collect private information for malicious purposes? I say phishing
*February 22, 2012*

**computers**

desktop e-mail clients e-mail filters online mails webmail
*February 22, 2012*

**computers**

what term is given to pieces of computer software that allow you to manage your e-mail from your computer? I say e-mail filters
*February 22, 2012*

**computers**

what is a link from one thing to another used to enhance usability? I say interface
*February 22, 2012*

**computers**

forums and discussion boards are the same thing. I say true
*February 22, 2012*

**computers**

I think its cookies
*February 22, 2012*

**computers**

does cookies help web pages remember your username and password?
*February 22, 2012*

**Chemistry**

Consider the reaction below. 3 O2(g) --> 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C
*February 20, 2012*

**Chemistry**

The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm. CCl4(g) C(s) + 2 Cl2(g) Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at 700°C
*February 20, 2012*

**Chemistry**

At a particular temperature, K = 2.0 10-6 mol/L for the following reaction. 2 CO2(g) 2 CO(g) + O2(g) If 1.8 mol CO2 is initially placed into a 5.9-L vessel, calculate the equilibrium concentrations of all species.
*February 20, 2012*

**Chemistry**

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively
*February 20, 2012*

**Chemistry **

For the reaction below at a certain temperature, it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2] = 0.0500 M, [F2] = 0.0100 M, and [HF] = 0.400 M. If 0.340 mol of F2 is added to this equilibrium mixture, calculate the concentrations of all ...
*February 20, 2012*

**Chemistry **

For the following reaction, Kp = 3.5 104 at 1495 K. H2(g) + Br2(g) 2 HBr(g) What is the value of Kp for the following reactions at 1495 K? (a) HBr(g) 1/2 H2(g) + 1/2 Br2(g) (b) 2 HBr(g) H2(g) + Br2(g) (c) 1/2 H2(g) + 1/2 Br2(g) HBr(g)
*February 20, 2012*

**Art**

I also go to SCCA!
*February 20, 2012*

**wvuit**

calculate the enthalpy change for the reaction n2h4(l) + 02(g) --> n2(g) + 2h20(l)
*February 18, 2012*

**Chemistry**

A compressed gas cylinder contains 1.00 103 g of argon gas. The pressure inside the cylinder is 2096 psi (pounds per square inch) at a temperature of 19°C. How much gas remains in the cylinder if the pressure is decreased to 656 psi at a temperature of 27°C?
*February 9, 2012*

**Chemistry**

A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same container but it already ...
*February 9, 2012*

**Chemistry**

A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same container but it already ...
*February 9, 2012*

**statistics**

19.7-20.6/1.3 = -.69 = 25% or 25 percent are less than 19.7 pounds
*February 9, 2012*

**roman republic**

Strength through Compromise The Romans were Indo-Europeans believed to have migrated southward across the Alps to the warmer climate and rich lands of on the Italian peninsula. They settled among the hills that are now a part of Rome In 509 BCE, a group of Roman nobles drove ...
*February 7, 2012*

**Math**

I don't understand this quadratic equation: The ratio of the measures of the length and width of a rectangle is 5:7. the area of the rectangle is 1,715 square feet. Find the dimensions of the rectangle.
*January 31, 2012*