Sunday

December 21, 2014

December 21, 2014

Total # Posts: 135

**statics/physics**

The uniform 10-kg ladder in the figure rests against the smooth wall at B, and the end A rests on the rough horizontal plane for which the coefficient of static friction is 0.3. determine the angle of inclination of the ladder and the normal reaction at b if the ladder is on ...
*December 8, 2014*

**Rational Functions Word Problem**

A car travels at a constant speed and burns g(x) litres of gas per kilometer, where x is the speed of the car in kilometers per hour and g(x) = 1280 + x^2/320x a) If gas costs $1.29 per litre, find the cost function C(x) that expresses the cost of the fuel for a 200 km trip as...
*October 6, 2014*

**Engineering**

Oh okay, that makes sense. thank you!
*September 6, 2014*

**Engineering**

A box with an open top is to be made from a square piece of cardboard by cutting equal squares from the corners and turning up the sides. If the piece of cardboard measures 12 in on the side, find the size of the squares that must be cut out to yield the maximum volume of the ...
*September 6, 2014*

**French**

it's et
*April 10, 2014*

**French**

Verbes: avoir et être Mets les phrases suivantes au passé composé. 1. Nous avons faim. 2. Il y a un visiteur dans la classe 3. As-tu de la chance?
*April 10, 2014*

**Science**

Use the Particle Theory of matter to explain what viscosity in and why temperature affects viscosity.
*February 2, 2014*

**Science**

The terms diffusion and osmosis seem to have similar meanings. Explain how they are similar. Then give reason why scientists use two separate term.
*January 7, 2014*

**physical science**

A person has a mass of 50.0 kg. what is the pressure they exert on the blades of their ice skates if each skate blade is 15.0 cm long and 5.00 mm wide?
*September 26, 2013*

**science**

An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takes a 1kg "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. What speed does the astronaut ...
*September 26, 2013*

**science**

an astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takesa 1kr "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. what speed does the astronaut ...
*September 25, 2013*

**science**

a man loads 1,000 sacks of flour into a truck in 30.0 minutes. Each sack has a mass of 20.0kg and the man must lift each sack 1.00m from the cart up onto the truck bed. how much power did the man develop.
*September 25, 2013*

**science**

an object who's mass 5.20kg has a gravitational potential energy of 10.3kj. how high above the ground is the object?
*September 25, 2013*

**Physics**

A hot-air balloon is descending at a rate of 1.7 m/s when a passenger drops a camera. If the camera is 44 m above the ground when it is dropped, how long does it take for the camera to reach the ground?
*May 28, 2013*

**Chemistry**

i got d.
*March 14, 2013*

**Chemistry**

Which of the following processes is exothermic? a.rolling a ball up a hill b.boiling water in a beaker to make steam c.allowing meat to thaw after taking it out of the freezer d.reacting hydrogen and oxygen gases to make water e.a popsicle melting on a warm summer day
*March 14, 2013*

**math-calculus**

The following equation shows the approximate relationship between the percentage y of total personal consumption spent on food and the corresponding percentage x spent on education. y = 38/x^0.38 percentage points; (6.5 ≤ x ≤ 17.5). According to the model, spending...
*December 20, 2012*

**Math Calculus**

The number of portable CD players you are prepared to supply to a retail outlet every week is given by the formula: q = 0.1p2 + 2p where p is the price it offers you. The retail outlet is currently offering you $50 per CD player. If the price it offers decreases at a rate of $...
*December 17, 2012*

**Chemistry**

how many grams of hydrogen occupy 40 ml at 300.15 K and 710 torr?
*October 22, 2012*

**Chemistry**

A sample of benzoic acid contaminated with NaCl and sand is to be recrystallized: Benzoid Acid: Solubility in water at 100 degrees Celsius in g/100 mL = 6.8, at 0 degrees Celsius in g/100 mL = 0.2. NaCl: Solubility in water at 100 degrees Celsius in g/100 mL = 39.1, at 0 ...
*October 21, 2012*

**Math**

The probability that Aaron sees Hannah on any given day is 1/2. What is the probability that he sees her 3 out of all 5 days this week?
*July 31, 2012*

**Advanced Algebra**

Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.
*April 30, 2012*

**Math**

If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height and initial velocity ...
*April 8, 2012*

**Applied Calculus**

If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height and initial velocity ...
*April 8, 2012*

**Applied Calculus**

If an object is launched straight up into the air from a starting height of h_{0} feet, then the height of the object after t seconds is approximately h=-16t^2+v_{0}t+h_{0} feet, where v_{0} is the initial velocity of the object. Find the starting height and initial velocity ...
*April 8, 2012*

**Applied Calculus**

Thank you, I got a very similar trying to do it the way our homework assignments were done. But your way seems much simpler. I got 25.8198898 by 30.76923077. C=3x+3x+5y =6x+5y xy=800 y=800/x c(x)=6x+5(800/x) =6x+4000/x c'(x)=6-4000/x^2 Find the critical value 6-4000/x^2=0 ...
*April 8, 2012*

**Applied Calculus**

A hardware store owner chooses to enclose an 800 square foot rectangular area in front of her store so that one of the sides of the store will be used as one of the four sides of the fence. If the two sides that come out from the store front cost $3 per running foot for ...
*April 8, 2012*

**Applied Calculus**

An underground electricity cable is to be laid between two boat docks on opposite banks of a river. One boat dock is 600 feet downstream from the other. The river is 200 feet wide. If the cost of laying the cable is $50 per foot under water and $30 per foot on land, how should...
*April 8, 2012*

**Calculus**

Okay, so im not understanding how you went from V'(x)=(12-2x)²+2x(12-2x)(-2) to V'(x)=12(x²-8)... ive done this problem many times and am stuck on this part. i always end up with V'(x)= 12x²-96x+144 => 12(x²-8x+12) so i end up with x=2 and x=...
*March 8, 2012*

**physics**

A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal distance from the edge of...
*March 1, 2012*

**physics**

A man with a mass of 62 kg skis down a frictionless hill that is h = 3.3 m high. At the bottom of the hill the terrain levels out. As the man reaches the horizontal section, he grabs a 20-kg backpack and skis off a 2.0-m-high ledge. At what horizontal distance from the edge of...
*March 1, 2012*

**math**

In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM
*January 16, 2012*

**Math**

In Triangle ABC, AC = BC and mC = 62°. The longest side of the triangle is: AC BC AB AM
*January 16, 2012*

**calculus**

Find the center of mass of the region bounded by the curve y = x3 - 4x2 +3x ; the x-axis ; x = 0 ; x = 1
*December 1, 2011*

**University of Phoenix**

How do I write a 150- to 200-word paragraph to explain the importance of purpose, audience, tone, and content in academic writing
*November 27, 2011*

**Algebra**

Thank you
*November 14, 2011*

**Algebra**

I have two questions-- 1.What is the population of a town after 6 years if it is increasing annually by 3.5%. The population is at 6,000 people right now. I did6000x(1+0.035)^6 = 7375.53 or 7376 people 2. The value of car is 28,000 dollars. If car depreciate at 20% per year, ...
*November 14, 2011*

**algebra**

also Ms. Sue thanks for your help with that other problem!
*September 29, 2011*

**algebra**

"Tanya's age is ten years greater than half Aarons age. If the sum of their ages is 55, how old is Tanya?" can who ever solves this explain how to do it too???
*September 29, 2011*

**algebra**

can anyone at least explain the question??
*September 29, 2011*

**algebra**

I don't know why i don't understand this stuff. its just so frustrating!
*September 29, 2011*

**algebra**

no thats where i've been getting stuck :(
*September 29, 2011*

**algebra**

Ms. Sue thanks a ton for solveing my last problem. But now I have another one. Can you help??? "Tanya's age is ten years greater than half Aarons age. If the sum of their ages is 55, how old is Tanya? also do you think you could explain how to do this so I can do it to?
*September 29, 2011*

**algebra**

thank you!
*September 29, 2011*

**algebra**

The length of a certain rectangle is 4 m greater than five times it's width. What are the dimensions of the rectangle if its perimeter is 20m??? please help i have no idea how to do this!
*September 29, 2011*

**Math**

i know u included the couples sitting side by side but still
*September 29, 2011*

**Math**

uhhhhhhhh are you sure cause that doesn't sound posible. especialy if the couples have to sit side by side
*September 29, 2011*

**Math**

if the couples have to sit side by side then i count 32
*September 29, 2011*

**Math**

I count 64 posibilitys: p=person s=seat p ssssssss p ssssssss p ssssssss p ssssssss p ssssssss p ssssssss p ssssssss p ssssssss
*September 29, 2011*

**4th grade math**

352 958 first add the 2 and 8 and get 10 and put the 10 to the side for later. then add the 50's. you will get 100 add the ten to this and get 110 and put it to the side. then add the 300 to the 900. you will get 1200. add the 110 to this. you will end up with 1310
*September 29, 2011*

**ENGLISH RIDDLE**

im guessing love but it could also be hate
*September 29, 2011*

**ENGLISH RIDDLE**

i have to agree. that post made my eyes hurt
*September 29, 2011*

**Math**

Determine whether or not the function is one-to-one. 1. f(x) = 2x - 7 2. f(x) =(11x − 5)
*August 31, 2011*

**math**

Form the composites of the following two functions. f(x)=x2 +7x--4 and g(x)=3x--12 5. (f g)(x) 6. (g g)(x) thanks!
*August 31, 2011*

**Math**

Perform the indicated operations with the following two functions. f(x)=x2 +7x-4 and g(x)=3x-12 3. f(x) + g(x) 4. f(x), g(x)≠ 0 g(x) thanks for the help!
*August 31, 2011*

**Algebra**

4(r-6)+1>5(r+3)-25 the solution set is ?
*August 1, 2011*

**Financial Accounting**

ane Doe of Creative Marketing was recording transactions into the accounting records to prepare financial statements for the bank in a loan application. Her expenses were higher than anticipated and she was concerned about the effects on net income. As she was recording $3,000...
*July 18, 2011*

**Life orientation**

5 ways in which poverty impacts on the environment
*May 2, 2011*

**Chemistry**

Element X has two natural isotopes:X-6 (6.015amu) and X-7 (7.016amu). calculate the atomic mass of element X given the abundance of X-7 is 92.5%. a)12.5amu b)6.50amu c)6.09amu d)6.52amu e)6.94amu
*March 6, 2011*

**Math**

Write the equation of the line satisfying the given condition. Perpendicular to x = 4 and passing through the point (7, 2)
*February 15, 2011*

**physics**

*is given by E=(3000i-600j) N/C the question doesnt include whether x or y is perpendicular to the places
*January 26, 2011*

**physics**

At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.5 × 105 m/s and vy = 3.0 × 103 m/s. Suppose the electric field between the plates is given by In unit-vector notation, what are (a) the electron's ...
*January 26, 2011*

**algebra**

Given the function G(v)=5v+7, find each of the following, G(2)=, G(-7)=, G(6.5)=
*January 23, 2011*

**MATH**

what is 881/5 as a mixed number
*January 18, 2011*

**math**

I STILL DON'T UNDERSTAND CAN YOU BREAK IT DOWN
*January 18, 2011*

**math**

15 1/2 divided by 3 4/7 =
*January 18, 2011*

**math**

I mean 881/5
*January 18, 2011*

**math**

what is 881/1 as a mixed number
*January 18, 2011*

**Geography**

Can you suggest some legends stories for South Sumatra?
*November 25, 2010*

**Physics**

I understand the basics of the center of mass, but I'm having a hard time with this wire one: "A uniform piece of wire, 20 cm long, is bent in the center to give it an L-shape. How far from the bend is the center of mass?" If you could help that'd be great. ...
*November 22, 2010*

**PHYSICAL SCIENCE**

WHAT IS THE KINETIC ENERGY OF A BALL WITH THE MASS OF 5KG ROLLING AT 10M/S
*November 2, 2010*

**physics**

How long would it take for the Earth to complete a full turn if a person at 49.2° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,385 km for the radius of Earth
*October 27, 2010*

**math**

How long would it take for the Earth to complete a full turn if a person at 43.8° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,390 km for the radius of Earth.
*October 27, 2010*

**english**

type of potato extract
*October 25, 2010*

**english**

does this make sense? Figure 1. Protein Analysis - Determination of the protein concentration of casein in an unknown sample after the addition of the biuret reagent from the results over test tubes 1 to 5.
*October 25, 2010*

**physics**

How long would it take for the Earth to complete a full turn if a person at 56.4° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,385 km for the radius of Earth.
*October 25, 2010*

**austin**

seth has three times as many stickers as evan. together they have 52 stickers. how many stickers does each person have?
*October 18, 2010*

**English**

What are some frequently misused adjectives?
*October 11, 2010*

**epimediology**

a. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder. b. A case-control study of the relationship between liver cirrhosis and alcohol use. In this study, smoking is associated ...
*July 19, 2010*

**Stress Management Techniques**

100% :D thx so much
*July 3, 2010*

**math**

for the first one, you first find the factors of 7 ...the only possibility is (7)*(1)=7 so you have (7x +/- ?)(x +/- ?) next you would consider the factors of ten (1)(10)=10 (2)(5)=10 note that you also must consider negatives here! so -1,-10,-2,&-5 are also possibilities! now...
*April 18, 2010*

**Math**

3(x+2)=12
*March 17, 2010*

**physics**

What is the kinetic energy of a 62kg cyclist if she is moving on her bicycle at 8.2 m/s?
*March 15, 2010*

**english**

Need help identify logical mistake, in this paragragh. People are overreacting and taking this so seriously, blowing it completely out of proportion. There was no harm done and I don’t see why they are making it a big deal. I seriously doubt any controller would put a kid...
*March 9, 2010*

**science**

why is it the air above us never squash us
*February 26, 2010*

**Statistics**

Considering that a researcher can test at the <p = .05 (95%), p = .01 (99%), or p = .001 (99.9%) level for statistical significance, how do you use these three levels in relationship to evaluate risk to patients in implementing the decisions based on research findings?
*January 27, 2010*

**statistics**

If a researcher were studying the effects of a teaching method on patient learning outcomes, how does the research question need to be worded to use a t-test to test for statistical differences? What type of data needs to be collected and why?
*January 27, 2010*

**algebra**

i have to write out in a one paragraph of how to get square root of 100 into simplest form.
*January 6, 2010*

**Physics**

Oh i get it. You have to use the equation for an accelerating straight-line object. Thanks
*January 3, 2010*

**Physics**

A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 20 m/s. The cliff is h = 53 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? (b) With what speed does it strike the ...
*January 3, 2010*

**physics**

It won't let me paste the map :(. I don't even know where to begin.
*December 21, 2009*

**physics**

The eye of a hurricane passes over Grand Bahama Island. It is moving in a direction θ = 49° north of west with speed v1 = 41.0 km/h. Exactly three hours later, the course of the hurricane shifts due north, and its speed slows to v2 = 19.5 km/h, as shown below. How ...
*December 21, 2009*

**Physics**

OHhh that makes much more since. I thought you could only go 17m one way. Thanks I figured it out.
*December 20, 2009*

**Physics**

A shopper pushes a cart 40 m south down one aisle and then turns 90.0° west and moves 18 m. He then makes another 90.0° turn and moves 17 m What is the largest possible displacement of the shopper? couterclockwise west What is the smallest possible displacement of the...
*December 20, 2009*

**Trig**

Why is the arctan of - square root of 3 equal a negative value (-pi/3) While the Arccos of -1/2 equal a positive value (2 pi/3)? Since it's the same concept, I'm not sure why the one value is negative while the other is positive. Thanks for your explanation!!
*December 16, 2009*

**world history**

one more question.... Did the directory replace the National Convention
*October 19, 2009*

**world history**

How did the french revolutionary army help to create modern nationalism?
*October 19, 2009*

**world history RESPONSE**

Could I put this for my answer: The Committee of Public Safety considered the people who still believed they need a king, or who supported King Louis XVI to be an enemy.
*October 19, 2009*

**world history**

whom did the committee of public safety consider to be enemies of the state?
*October 19, 2009*