Friday

March 6, 2015

March 6, 2015

Total # Posts: 897

**Physics**

A super-hero is leaping from the roof of one building onto another. The first building is 120 meters high and the second building is 80 meters high. The horizontal velocity of the super-hero is 12.0 m/s. What is the maximum possible distance between buildings that the hero can...
*December 18, 2010*

**Physics**

A launcher fires a projectile with a velocity of 6.31m/s. Determine the horizontal distance of the projectile (in the air) at 5 degrees. Recalculate this distance at 10, 15, 20.... (5 degree increments) up to 90 degrees (at which point the horizontal distance will be zero). ...
*December 18, 2010*

**Physics**

You are the physics expert for a professional stuntman. The stunt you have designed includes a ramp that is angled at 30°. You expect that the stuntman will be traveling at 18.0 m/s when he leaves the ramp. How far must the landing ramp be positioned, and what is the ...
*December 18, 2010*

**Physics**

A launcher fires a projectile with a velocity of 6.31m/s. Determine the horizontal distance of the projectile (in the air) at 5 degrees. Recalculate this distance at 10, 15, 20.... (5 degree increments) up to 90 degrees (at which point the horizontal distance will be zero). ...
*December 18, 2010*

**Physics**

A bomber is flying at a velocity of 200.0 km/hr with an altitude of 1.5 km. How far (horizontally) from its intended target should the plane drop the bomb?
*December 18, 2010*

**Physics**

A super-hero is leaping from the roof of one building onto another. The first building is 120 meters high and the second building is 80 meters high. The horizontal velocity of the super-hero is 12.0 m/s. What is the maximum possible distance between buildings that the hero can...
*December 18, 2010*

**Physics**

A catapult throws a projectile at a 40.0° angle with a velocity of 26.0 m/s. How high will the projectile reach, and how far away will the projectile land?
*December 18, 2010*

**Math**

if you were listening in class you would know!!!!
*December 2, 2010*

**geometry**

i think in order to answer we need to know how these triangles are related. are they congruent?
*November 30, 2010*

**chem**

ok i see thanks
*November 30, 2010*

**math**

and sorry but how does it becom 1/5 i thought it would be 16/5 * 5/1
*November 29, 2010*

**math**

so when you * fractions you * both buttom and top all the time? and thank you
*November 29, 2010*

**math**

16over5 / 5 can you explan to me
*November 29, 2010*

**chemistry**

Rank the relative nucleophilicity of the indicated species in ethanol. CH3COOH CH3OH CH3COO- CH3S- CH3O- THANK YOU!
*November 27, 2010*

**Math Financa**

Stock in Country Road Industries has a beta of 0.8940. The market risk premium is 8.7 percent, and T-bills are currently yielding 4.8 percent. The company's most recent dividend was $1.8 per share, and dividends are expected to grow at a 5 percent annual rate indefinitely...
*November 26, 2010*

**Biology**

What are the conditions that should be kept constant when we are growing seeds? ex. The place of plant and etc?
*November 24, 2010*

**Computer Programing & Logic Design**

Design a flowchart using Visual Logic for the following: 1.A program that accepts a candy name (for example, “ chocolate-covered blueberries”), price per pound, and number of pounds sold in the average month, and displays the item’s data only if it is a best-...
*November 20, 2010*

**chemistry**

what state is sulfur dioxide in at 200 k Pa and -100 Celsius
*November 18, 2010*

**Downsizing and Fixed Costs **

Industry downsizing has been a major part of the corporate world, even government agencies are downsizing. GovernmentExecutive website "covers the business of the federal government and its huge departments and agencies - dozens of which dwarf the largest institutions in ...
*November 18, 2010*

**Direct Labor: Variable or Fixed Cost? **

Throughout the corporate world, businesses are transforming labor into a more flexible (and variable) cost. Among such companies are Hewlett-Packard, General Electric, DuPont, Sun Microsystems, and British Airways. Discuss whether direct labor is a fixed or a variable cost. ...
*November 18, 2010*

**physics**

What is the pressure acting on your body if you dive down to a depth of 3.4 m?
*November 16, 2010*

**physics**

i think the answer is deficate in my mouth
*November 16, 2010*

**Physics**

vertical drop S = ut+(1/2)gt² = 0 + (1/2)(9.8)*(3.1)^2 =47.089s How far from base 1.2m/s * 3.1s = 3.72m
*November 14, 2010*

**trig**

let sin theta = -7/25 with theta in QIV find sec (2theta)
*November 11, 2010*

**adult education**

Briefly describe the cookie production process. 2. What are two ways that the company has increased productivity? Why did increasing the length of the ovens result in a faster output? 3. Do you think that the company is making the right decision by not automating the packing ...
*November 8, 2010*

**chemistry **

Oh I see you answered that, So , it is incorrect to add 2H to balance H2 in a basic solution... ? Although all the first steps are the same as used in acidic solution?
*November 4, 2010*

**chemistry **

my question is about whether I have to add water or just H to firstly balance the second half reaction either 2e+2H2O--->H2+2OH OR 2e+2H-->H2 which one is correct for a basic solution reaction ? thanks a lot
*November 4, 2010*

**chemistry **

In the REDOX reaction in basic solution Zn-->Zn(OH)4+H2 I know that the first half reaction is 4H20+Zn-->Zn(OH)4 +4H+e but the second one is either 2e+2H2O--->H2+2OH (WHICH IS THE ANSWER GIVEN ON THE WORKSHEET) OR 2e+2H-->H2 I think both leads to the same answer= ...
*November 4, 2010*

**algebra**

28=2h-18
*November 2, 2010*

**math**

*-2 +1
*November 2, 2010*

**algebra**

Can someone please help-I need to do this today. All I need is the method and answer.
*November 2, 2010*

**algebra**

Ans also I got this far for the first part's method 4x^2-7x+3= 4x^2-3x-4x+3= x(4x-3)-1(4x+3) but there is nothing similar-how did you get (4x-3) for both of them.
*November 2, 2010*

**algebra**

Thanks,can you tell me the answer to the second one.
*November 2, 2010*

**algebra**

Factorise 4x^2-7x+3= and 6x^2+10x-5= Thanks Method would be good-as I am stuck.
*November 2, 2010*

**Physics**

What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east?
*November 2, 2010*

**Maths**

Differentiate: y = In ( (x+3) / (x^2) )
*October 31, 2010*

**Science HELP!**

If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?
*October 27, 2010*

**french**

The le/la has to come after the conjugated verb and before the verb in the infinitive eg. 1) Je veux le voir If there is one verb then it goes between the pronoun and the verb (which u have done)
*October 27, 2010*

**Physics**

If a balloon is filled with helium gas of molar mass 4x10^-3, at a pressure of 1*10^5, What is the number of moles of gas in the balloon?
*October 27, 2010*

**precal**

find all values of x such that sin(sin(x))=1
*October 26, 2010*

**12th grade**

thats wrong bob it doesn't work.
*October 20, 2010*

**physics 11**

A 80KG hockey player has a coefficient of friction u=0.08 between her skates and ice. What is the force of friction on the player? 0.08(80 x 9.8) =62.7N If the hockey player is coasting, what is the net force?
*October 19, 2010*

**calculus**

find dq/dp.q=(5p^2+2p)-3/2 use impliict differentiation to find dq/dp
*October 17, 2010*

**Science**

WhT'S THE ANSWER?
*October 12, 2010*

**Chemistry**

Rank the following Bronsted acids from strongest to weakest: H-SH H-CH3 H-NH2 H-F H-I
*October 10, 2010*

**Physics**

the answer is shake your money maker
*October 5, 2010*

**Physics**

A long jumper leaves the ground at an angle of 20 degrees and travels a horizontal distanceof 7.0m before landing. What is the takeoff speed of the jumper? To be honest I really don't know how to solve it. A step-by-step explantion would be helpful.
*October 5, 2010*

**Calculus**

I don't understand this question. Q. In the theory of relativity, the mass of a particle with velocity "v" is m = mo/√(1-v2/c2) where mo is the mass of the particle at rest and "c" is the speed of light. What happends as v-->c-? Thank You!
*October 5, 2010*

**physics**

___ _ _ _ ____ | | |\/| |___ ... | | | | |___ ,' '. ___ ____ ; ; | | | | | | |__| | | _ _ _ ____ ____ _ _ | _, ,_ | | | | | | |__/ |_/ '´ | | `' |_|_| |__| | \ | \_ | | _ _ | | .|_|_,' | ,--. | | | | : | | | `|`'`-._...
*October 1, 2010*

**Physics**

Thanks!
*September 20, 2010*

**Physics**

In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the coefficient of static ...
*September 20, 2010*

**math**

7135
*September 16, 2010*

**calculus**

What analytic method steps are required to find the limit of cos x-1/2x^2 ? Limit greater than 0. Estimating -0.25 but stalled ....
*September 9, 2010*

**calculus**

What analytic method steps are required to find the limit of cos x-1/2x^2 ? Limit greater than 0. Estimating -0.25 but stalled ....
*September 9, 2010*

**algebra**

Solve algebraically and check x^2 + 4y^2 = 4 x = 2y - 2
*September 6, 2010*

**Physics (Circular Motion!!)**

Thank you for trying to help, but that is what i've been getting and my homework website tells me it is wrong. But now its two on one so i'm starting to think that the website is wrong
*September 2, 2010*

**Physics (Circular Motion!!)**

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.10 s. the astronaut is strapped into a seat 7.40 m from the axis. A) What is the astronaut's tangential ...
*September 2, 2010*

**Physics**

Help! I've been trying to understand this question for quite some time now and every attempt i make at it i get the wrong answer. maybe i'm just pluging the numbers into the equations wrong, but i always get the wrong answers. if someone can just breakdown the steps ...
*September 2, 2010*

**math**

I feel i may have stepped on some toes. I am sorry for that. I am not the most intelligent person in the world and I sincerly appoligize.
*September 2, 2010*

**math**

the best way to go about this question is trial and error. if he worked 7 hours and made 39.50, then if he works 3 hours painting the fence, and 4 hours mowing the grass then he makes 39.50. i'm sure you can make equations for it but it's much quicker and easier to go ...
*September 2, 2010*

**Social Studies**

10. The principle of self-government emphasizes majority rule whereas the principle of liberty emphasizes individual rights. These principles a. are universal and are the foundation of all legitimate governments. b. have no real meaning in practice. c. have the same meaning ...
*August 22, 2010*

**Math word problems**

To determine the number of deer in a game preserve, a conservationist catches 428 deer, tags them and lets them loose. Later 644 deer are caught.161 of them are tagged. How many deer are in the preserve?
*August 3, 2010*

**Math**

3/w+1 + 2/3w= ? would the answer be 5/4w+1
*August 3, 2010*

**chemistry**

you are right....I wrote it wrong. Does this mean that the solution will be more toward the redish side?
*July 18, 2010*

**chemistry**

you are right....I wrote it wrong. Does this mean that the solution will be more toward the redish side?
*July 18, 2010*

**chemistry**

in my text book it says that if the calculated value is less than or equal to 0.1 then the color of the conjugate base (In- in this case) predominates. does this mean that the solution will be yellow then?
*July 18, 2010*

**chemistry**

The initial state of a reaction is A2 +B2 –> 2AB. In the initial state of the reaction there are 6 A2’s present and 6 B2’s present. Suppose the reaction is carried out at two temperatures.Which of these situations represents the result at the higher ...
*July 18, 2010*

**chemistry**

in my text book it says that if the calculated value is less than or equal to 0.1 then the color of the conjugate base (In- in this case) predominates. does this mean that the solution will be yellow then?
*July 18, 2010*

**chemistry**

Is it because it is more acidic?
*July 18, 2010*

**chemistry**

would it be orange?
*July 18, 2010*

**chemistry**

The ionization constant Ka of an indicator HIn is 1.0x10^-6. The color of the nonionized form is red and that of the ionized form is yellow. What is the color of this indicator in a solution whose pH is 4.00? Thanks!
*July 18, 2010*

**chemistry**

Thank You!
*July 17, 2010*

**chemistry**

Which of the following has the greatest buffer capacity? There are three separate problems below. 1. 0.40 M CH3COONa / 0.20 M CH3COOH 2. 0.40 M CH3COONa / 0.60 M CH3COOH 3. 0.30 M CH3COONa / 0.60 M CH3COOH Thanks!
*July 17, 2010*

**chemistry (WEBWORK)**

a. vi,v b.iii c.iv d.ii e.i
*July 17, 2010*

**Physics**

This is WRONG. Did not multiply the 2pi by 3. You just did 2pi
*July 17, 2010*

**Economics - Please Help**

1 3
*July 6, 2010*

**marketing**

• The goal of integrated marketing communication (IMC) is to produce a unified promotional message that has the customer as its focus. All promotional activity, such Draft a 200- to 300-word response answering the following questions: o How does an organization establish ...
*June 22, 2010*

**Calculus**

Calculus Limit Problem: Evaluate the function at the given numbers (correct to six decimal places). Use the results to guess the value of the limit, or explain why it does not exist. f(x)=cosx-1/sinx x=1, .5, .4, .3, .2, .1, .05, .01 What should I do? A table of values??
*June 22, 2010*

**marketing**

Select a product or service you would like to introduce to the marketplace. It may be from an existing company or a new concept. Prepare a 1,750- to 2,100-word marketing plan for your selected product or service. Include the following elements: A brief description of the ...
*June 17, 2010*

**math**

how many 2x2 tiles to fill a room 85 x18?
*June 16, 2010*

**chemistry**

3. What is the ka for a solution of choloracetic acid (C2H5ClO2) which has a pH of 1.52 in a 0.112M solution? Please reply me as soon as possible sir Thank you George.
*June 15, 2010*

**college**

Writing errors, such as those identified in the readings for this week, may influence the way a reader interprets your writing. A résumé that is marred by grammatical errors, for example, may prevent a job candidate from progressing to the interview stage. Do you...
*June 9, 2010*

**CHEMISTRRY**

what is the molarity of an H2SO4 solution if 49.0 ml is completely titrated by 68.4ml of an NaOH solution whose concentration is 0.333 M?
*June 8, 2010*

**Math**

Find the simple interest. Round your answer to the nearest cent. Principal = $900 Rate = 4% Time in years = 3
*May 29, 2010*

**Algebra 1 **

how to slove this question (a-8)(a-9)
*May 11, 2010*

**math**

what is the answer for (h+3)(h+4)
*May 11, 2010*

**language**

but black + ness = blackness sorry i dont get please explan it to me
*May 9, 2010*

**language**

so is it (B)
*May 9, 2010*

**language**

what is a compound? the queston is which word is a compound word? A)blackbrid B)blackness C)blacker
*May 9, 2010*

**language**

thanks
*May 9, 2010*

**language**

what is a homonym? the queston is? what is a homonym for missed? A)must B)mist C)most
*May 9, 2010*

**language**

what is a suffix? and what is prefix? the queston is " which word has a suffix but no prefix A)uncomfortable B)comfortably C)discomfort thanks for your time.
*May 9, 2010*

**lag**

no i mean (A) idiom and c
*May 9, 2010*

**lag**

what is a idiom? the queston is this "which sentence uses an idiom?" A)gustavo said we should go to the party. B)gustavo said we should go for it. C)gustavo said we might go with him.
*May 9, 2010*

**Statistics**

In a survey of 1037 adults, ages 65 and over, 643 were concerned about getting the flu. a) Find the point estimate for the population proportion , p , of those concerned about getting the flu. b) Construct a 90% Confidence Interval for the population proportion. c) How big a ...
*May 5, 2010*

**Statistics**

A medical research team studied the number of head and neck injuries sustained by hockey players. Of the 200 players who wore a full-faced shield, 40 sustained an injury. Of the 250 players who wore a half-faced shield, 60 sustained an injury. At á = 0.05, can you ...
*May 5, 2010*

**Statistics**

A maker of microwave ovens advertises that no more than 10% of its microwaves need repair during the first 5 years of use. In a random sample of 57 microwaves that are 5 years old, 13% needed repairs. At á=0.01, can you reject the maker’s claim that no more than 10...
*May 5, 2010*

**statistics**

An auto maker estimates that the mean gas mileage of its sport utility vehicle is 20 miles per gallon. A random sample of 8 such vehicles had a mean of 18 per gallon and a standard deviation of 5 miles per gallon. At á=0.05, can you reject the auto maker’s claim ...
*May 5, 2010*

**Algebra**

98. -49 = x - 50 add 50 to both sides x = 1 94. no (vertical line is not a function) 92. yes (horizontal line is a function) 89. (6/7)x - 6 = -2 add 6 to both sides = (6/7)x = 4 multiply both sides by (7/6) = x = 28/6 86. a. horizontal the y values are the same, so when they ...
*May 1, 2010*

**math**

81 hours
*April 28, 2010*

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