Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 805

**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?

**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!

**Chemistry**

Help!

**Chemistry**

Just to add, salicylic acid reacts with methanol to produce methyl salicylate and water.

**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...!

**Calculus**

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

**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

**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

**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?

**Math**

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

**Math**

what is the slope and y intercept of this equation? x+2=0

**Algebra**

give the domain of the function: f(t)= 3t²+5t+2

**honors chemistry**

SWS fan?

**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 o...

**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.

**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

**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

**math**

after noon would be 4 hours not 7.

**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 = ...

**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?

**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, nam...

**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*Wid...

**Chemisrty**

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

**Chemisrty**

How many L of carbon dioxide gas will be produced from the decomposition of 5.0g of sodium hydrogen cardonate?

**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...

**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)))+(...

**sociology**

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

**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!

**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 th...

**Child Development**

thank you

**Child Development**

So then it is Roles maybe This lesson is kicking my butt

**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...

**math**

m= y2 - y1/ x2-x1 m being slope

**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...

**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)

**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)

**Life orientation**

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

**Algebra 2**

how do you find the slope and y intercept of: x= -3

**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 conve...

**Chemistry**

What are the rules to determine the solubility of salts?

**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

**Chemistry**

Identify which element is being oxidized and which is being reduced Mg (s) + 2H2O (g) = Mg(OH)2 (s) + H2 (g)

**Geometry**

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

**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

**Intermediate Algebra**

12y^4

**Intermediate Algebra**

1.8 * 10^6

**language arts**

Hi. Do you know of any poems about holidays that include word play or puns? Thanks!

**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)

**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

**physics**

directly across from one of the speakers

**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 get...

**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 :)

**computers**

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

**computers**

I meant false

**computers**

a file with the extension of .bmp is an audio file? true or false? I say true

**computers**

:0 is an example of internet slang. I say true

**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 init...

**computers**

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

**computers**

what would be redundant if added to the content of an e-mail? I say purpose of e-mail

**computers**

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

**computers**

desktop e-mail clients e-mail filters online mails webmail

**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

**computers**

what is a link from one thing to another used to enhance usability? I say interface

**computers**

forums and discussion boards are the same thing. I say true

**computers**

I think its cookies

**computers**

does cookies help web pages remember your username and password?

**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

**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

**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.

**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

**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 g...

**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)

**Art**

I also go to SCCA!

**wvuit**

calculate the enthalpy change for the reaction n2h4(l) + 02(g) --> n2(g) + 2h20(l)

**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?

**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 ...

**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 ...

**statistics**

19.7-20.6/1.3 = -.69 = 25% or 25 percent are less than 19.7 pounds

**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 t...

**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 t...

**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.

**Physics**

How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?

**medical office percedures**

Work Place Application 1-Assume that you have been selected to order a new computer system for the physician. Clinic personnel include: three physicians, six administrative personnel, and four clinical assistants, plus you, the office manager. Describe the minimum equipment ne...

**world history**

The Japanese living in America were seen as a threat to national security after the Japanese attack on Pearl Harbor, so they were sent to live in camps in the interior of the country. true or false

**Science**

KE= 1/2mv^2 KE= 35kg x 50m^2/s^2

**cultural diversity**

Native americans are ambivalent about early intervention programs forchildren with disabilities because they:

**Science(help test tomorrow 6 garde)**

What kind of combination is iron filings and saw dust?

**Physics**

Thank you! I redid it with different numbers, and I got the problem correct. :)

**Physics**

A water skier, moving at a speed of 8.36 m/s, is being pulled by a tow rope that makes an angle of 33.4 ° with respect to the velocity of the boat (see the drawing). The tow rope is parallel to the water. The skier is moving in the same direction as the boat. If the tensio...

**quote a reference**

im writting a essay for child care how do i quote a reference from a book can you give an example

**4 grade math**

Remember PEMDAs. It tells the order of operations. M for multiplication comes first. 4+8+7/216 Next is D for division. 4+8+(7/216) Let's pretend it's a fraction for right now. Next is A for Addition 12+(7/216) Your result in mixed number form is 12 7/216. As an imprope...

**economics**

5. A market contains a group of identical price-taking firms. Each firm has a marginal cost curve MC(Q) = 2Q, where Q is the annual output of each firm. A study reveals that each firm will produce if the price exceeds $20 per unit and will shut down if the price is less than $...

**Physics**

A rifle is pointed horizantally 100 meters away from a target. The bullet hits 0.75 millimeters below the target. How long did it take to get there? What was the velocity of the bullet when it was first shot?

**chemistry help please ASAP**

how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe

**chemistry please help ASAP**

how do I find two positive ions and two negative ions that are isoelectronic with a) Ar b) Xe

**sport**

compare and contrast the influences legal factors and regulatory bodies on health safety in sport. case law vs civil law similarities and differeences.

**sport**

what are the legal factors and regulatory bodies that influence health and safety in sport thank you.

**calculus**

find limit as x aproches 0 in the equation (5sin(x))/(x^2-13x)

**chemistry - help**

the density of water is 62.4 lbs/ft^3.what mass of water in kg will a rectangular hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?

**chemistry help ASAP**

i don't understand, i can:t get the correct answer . please help

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