Thursday
January 29, 2015

Posts by Anonymous


Total # Posts: 76,899

chemistry
How many grams of CO(g) are in 0.944 L of the gas at 2.26 atm and 257. K?
December 6, 2014

chemistry
All polymers made from polyethylene will have the same density.
December 6, 2014

m
yes
December 6, 2014

m
For a preschool plan can you have a science activity for each day?
December 6, 2014

Physics
Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 400 N, is applied at an angle α = 32° to the forward dashed line. The second force, F2 = 536 N, is applied at an angle β = 10° to the forward dashed line. (a...
December 6, 2014

PHYSICS : I NEED HELP PLEASE
I need help
December 6, 2014

PHYSICS : I NEED HELP PLEASE
a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient of friction between grass and lawnmower wheels is 0.10. Calculate normal force, force of friction and acceleration
December 6, 2014

Physics: need detailed answer
what does it mean when it says pulled by a 100N on flat ground?
December 6, 2014

Physics: need detailed answer
a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient of friction between grass and lawnmower wheels is 0.10. Calculate normal force, force of friction and acceleration
December 6, 2014

Math
How do you make a process table out of an equation
December 6, 2014

Math
y=-2x+100 into standard form
December 6, 2014

Math
I changed it to slope intercept and got y=-2x+100
December 6, 2014

Math
Is the slope for 10x+5y=500 -2?
December 6, 2014

Math
10x+5y=500 What is the slope? Do I have to change it to slope intercept form first? Or is there a way to find slope with keeping that equation
December 6, 2014

Math
What does the slope mean in a scenario
December 6, 2014

MATH
Is X always the independent variable
December 6, 2014

MATH
Thanks
December 6, 2014

MATH
10x+5y=500 What is the independent variable
December 6, 2014

MATH
x intercept is 50?
December 6, 2014

MATH
Solve for x intercept
December 6, 2014

MATH
10x+5y=500 Solve
December 6, 2014

MATH
Im not sure how to find x intercept when its in slope intercept form already
December 6, 2014

MATH
Is the x intercept 3/2??
December 6, 2014

MATH
x intercept of y=30x+20???
December 6, 2014

Reading
I don't understand the essay "Bodies in Motion and at Rest" by Thomas Lynch. What is the point of the essay? Correct me if I am wrong...is it discussing how our life adds up and that unlike the particulars, we do not have a definite answer to why? Does this make ...
December 6, 2014

Marketing
my question is How could a coffee manufacturer or retailer integrate fair trade products into its social responsibility efforts?
December 6, 2014

Pre Calculus
One hose can fill a small swimming pool in minutes. A larger hose can fill the pool in minutes. How long will it take the two hoses to fill the pool working together? Do not do any rounding.
December 5, 2014

Calculus
Find the interval on which f(x)=xe^-x is increasing. I got (1,infinity)..
December 5, 2014

physics
4.
December 5, 2014

physics
how many significant digits are in the following 2,546m
December 5, 2014

History
True False After emancipation, blacks joined the Confederate Army in droves. I guess this would be true but, much more African Americans joined the Union Army.
December 5, 2014

Calculus
On what intervals is the function f(x)=e^e^2 increasing? Concave upward?
December 5, 2014

Biology
Based on cellular respiration, what happens when oxygen supply is cut off to an animal?
December 5, 2014

Calculus
Differentiate. cos^-1 2x
December 5, 2014

Calculus
Differentiate. cos^3x My answer: -3cos^2x sin^2x
December 5, 2014

Calculus
Find the interval on which f(x)=xe^-x is increasing. I got (1,infinity)..
December 5, 2014

Calculus
If f(x)=the sqrt of 3x,find f'(3). Isn't it 3/2•sqrt of 3?
December 5, 2014

physics
A 92 kg clock initially at rest on a horizontal floor requires a 656 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 560 N keeps it moving with a constant speed.
December 5, 2014

math
sarah works in the clubhouse golf course. She receives a case containing 125 golf balls. the number of boxes in the case is equal to the number of packs in each box. and the number of packs in each box is equal to the number of golf balls in each pack. how many golf balls are ...
December 5, 2014

Math
ask your teacher. Don't waste your time here. You get responses every 10 days.
December 5, 2014

Pre-Calc/Trig...
okay thank you :)
December 5, 2014

Pre-Calc/Trig...
Use the rules of logarithms to expand [(x+3)^4(x-5)^7]
December 5, 2014

Physics
What is the force of attraction between an 8 kg bowling ball and a 13 kg cannon ball that are sitting 2 meters apart?
December 5, 2014

Math
Suppose their are 2 pieces of cake left over but you dont know how many pieces were in the whole cake
December 5, 2014

physics
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. The sound intensity level is 71 dB above the threshold of human hearing. How much sound energy comes through the window in one hour?
December 5, 2014

physics
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 28.0 m apart and the total power of the sound coming from each speaker is 0.602 W. Find the total sound intensity the man hears when (...
December 5, 2014

physics
When an earthquake occurs, two types of sound waves are generated and travel through the earth. The primary, or P, wave has a speed of about 8.0 km/s and the secondary, or S, wave has a speed of about 4.5 km/s. A seismograph, located some distance away, records the arrival of ...
December 5, 2014

physics
A jetskier is moving at 8.9 m/s in the direction in which the waves on a lake are moving. Each time he passes over a crest, he feels a bump. The bumping frequency is 1.15 Hz, and the crests are separated by 5.8 m. What is the wave speed?
December 5, 2014

physics
The speed of a transverse wave on a string is 457 m/s, while the wavelength is 0.228 m. The amplitude of the wave is 2.05 mm. How much time is required for a particle of the string to move through a total distance of 1.34 km?
December 5, 2014

business finance
Your client is 40 years old, and she wants to begin saving for retirement, with the first payment to come one year from now. She can save RM5,000 per year, and you advise her to invest it in the stock market, which you expect to provide an average return of 9 percent in the ...
December 5, 2014

business finance
You want to buy a small house that costs RM100,000. You have RM10,000 for a down payment and repaid in equal installments at the end of each of the next 3 years. The interest rate is 7 percent compounded annually. a. Calculate how much you need to pay for each year. b. Set up ...
December 5, 2014

chemistry
) Indicate how each of the following errors would affect(increase, decrease, or no change) your calculated value for the molar volume of O2 at STP (assuming that you complete the expiriment otherwise correctly). In each case, explain your answer. A. Your sample was not ...
December 5, 2014

chemistry
How many milliliters of 0.50M NaOH solution are required to titrate 20.0mL of a 0.20M H2SO4 solution to an end point?
December 4, 2014

HISTORY
True False Following the conclusion of the war, Lincoln’s second term in office was much more peaceful. Not sure about this question, because Lincoln talked about peace in his speech but his term was so short because he was shot.
December 4, 2014

HISTORY
True False The Ku Klux Klan had its origins in a college fraternity in South Carolina in the 1830s. I'd say false, didn't they form the KKK in 1860s? Rutherford Hayes won a landslide victory in the election of 1876. I'm not sure about this one because he initially ...
December 4, 2014

HISTORY
The North won the Civil War because A. they had superior numbers of military forces B. the South’s principle of States’ Rights sometimes prevented them for working together successfully C. the North’s naval blockade prevented the South from selling much of its ...
December 4, 2014

Help math
the weight of 2 science fiction books and 1 autobiography is 5/6w pounds. what is the total weight of 4 of these science fiction books and 2 of these autobiographies?
December 4, 2014

art pleaase help
Creating a large scale monument of an individual could indicate to the viewer that a.this was a community center b.geometric and line patterns are symbolically important. c.landscapes are appealing to society. d.certain individuals in society are important.
December 4, 2014

Test
What are good ways to remember facts for a quiz
December 4, 2014

Great Expectations
Yes, I have read it, but I don't seem to remember this one or find it online.
December 4, 2014

Great Expectations
Who lives with the aged parent in Great Expectations?
December 4, 2014

Math
I know now Add them together without squaring.
December 4, 2014

Math
Find the shortcut. Solve these problems. Then find and explain a shortcut method for finding the answer. 52(Squared) - 42 (squared) = 82 (Squared) - 72 (Squared) = 122 (Squared) - 112 (Squared) = 312 (Squared) - 302 (Squared) = 892 (Squared) - 882 )(Squared =
December 4, 2014

math
a floor plan has been prepared for a new building, drawn to a scale of 1/2 inch = 1 foot. A certain area is drawn to a scale of 1 foot long and 7 1/2 wide on the floor plan. the actual dimensions of theis areas in the building are?
December 4, 2014

Physics
A projectile, fired with unknown initial velocity, lands 18.4 s later on the side of a hill, 2740 m away horizontally and 469 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its initial velocity? 115.741 ...
December 4, 2014

Great Expectations
What does Pip do after going to London? Does he join a school? How does he learn good manners? I've read the story, but these exact details aren't clear to me.
December 4, 2014

chemistry
A sample of 0.250 g of nickel complex was titrated with 0.150 M EDTA. If the titration of the nickel sample required 7.5 mL of EDTA to reach the equivalence point, what is the percent nickel in the sample?
December 4, 2014

physics
A projectile is fired into the air from the top of a cliff of height h = 186 m above a valley. Its initial velocity is v0 = 64.8 m/s at an angle θ = 59° above the horizontal. Where does the projectile land? (Ignore any effects due to air resistance.)
December 4, 2014

college algebra
Find a12 when a1 = 5 and r = – 2.
December 4, 2014

math
f(x)=x^6-2x^4-81x^2+162;-3
December 4, 2014

please check my english
c d c b are the correct answers
December 4, 2014

Physics
Question: A force of 25N pushes a curling rock from rest 1.0 m across a frictionless surface. Find the FINAL kinetic energy. attempts: Well i guess it would be changeinEk so i tried Wnet=changeinEk fnet x changeinD = 1/2mvf^2-1/2mvi^2 to fnet x changeinD +1/2mvi^2=1/2mvf^2 ...
December 4, 2014

Math
A container holds 5 quarts when filled now it contains 3 3/4 quarts of water. How much more water must be added to fill the container
December 4, 2014

Physics
Question: A force of 25N pushes a curling rock from rest 1.0 m across a frictionless surface. Find the FINAL kinetic energy. attempts: Well i guess it would be changeinEk so i tried Wnet=changeinEk fnet x changeinD = 1/2mvf^2-1/2mvi^2 to fnet x changeinD +1/2mvi^2=1/2mvf^2 ...
December 4, 2014

Biology
How is ATP released as heat? Where does the heat go?
December 4, 2014

Math
A savings account with a current balance of $5,000 earns 2.75% annual interest, compounded continuously. To the nearest dollar, what will be the account balance in 10 years?
December 4, 2014

Pre-Calc/Trig...
I have one way, but cant think of another? Show two ways of finding y if y = log4 64. Explain your thinking. 4^x=64 x=3
December 4, 2014

Pre-Calc/Trig...
Alright, thanks. (:
December 4, 2014

Pre-Calc/Trig...
Write the equation y = log x in exponential form.
December 4, 2014

Math
Nevermind, I worked the answer out
December 4, 2014

Math
A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the cliff’s edge. How far...
December 4, 2014

Coll Algebra
A grain barge travels on a river from point a to point b unloading and loading again. The barge travels 5mph relative to water. the river flows downstream at a rate of 1mph. if the trip upstream takes 2hrs longer than the trip downstream how far is it from point a to point b
December 4, 2014

5th grade math
How do you multiply words
December 4, 2014

physics
A projectile is fired into the air from the top of a cliff of height h = 186 m above a valley. Its initial velocity is v0 = 64.8 m/s at an angle θ = 59° above the horizontal. Where does the projectile land? (Ignore any effects due to air resistance.)
December 4, 2014

physics
A stone thrown horizontally from the top of a 18-m tower hits the ground at a point 18 m from the base of the tower. (Ignore any effects due to air resistance.) (a) Find the speed at which the stone was thrown. m/s (b) Find the speed of the stone just before it hits the ground...
December 4, 2014

Science
In order for a child to inherit a recessive genetic disease, like sickle cell anemia, healthy must both have
December 4, 2014

Science
In order for a child to inherit a recessive genetic disease, like sickle cell anemia, healthy parents must both
December 4, 2014

math
Describe a situation in which it is better to round a mixed number up to the next whole number even if the fraction in the mixed number is closer to 1/2 than 1?
December 4, 2014

child dev
The early childhood educator who designed many teaching aids to promote printing in preschoolers through the child’s sense of touch was
December 3, 2014

child dev.
Rosa is a newborn. As she grows, which will she learn to control last?
December 3, 2014

Math
Expand and simplify (p+3)(p-7)
December 3, 2014

Math
why is 19 days , can you explain to me plz ...
December 3, 2014

Math
Whats 9 + 10
December 3, 2014

Pre-Calc/Trig...
okay thanks! :)
December 3, 2014

Pre-Calc/Trig...
If An is defined as a geometric sequence, is the sequence 1/an also a geometric sequence? Explain your reasoning
December 3, 2014

physics
An object of mass 2.0 kg starts from rest at the top of a frictionless curved ramp. At the bottom, it collides with and sticks to another 2.0-kg mass object. Together the objects then cross a small rough section where there is friction before leaving the edge of the table ...
December 3, 2014

Symmetry
⬇️➡️➡️➡️⬆️➡️⬆️⬅️⬆️⬆️ The end
December 3, 2014

science
A jellyfish can propel itself with jets of water pushed out of its bell, a flexible structure on top of its body. The elastic bell and the water it contains function as a mass-spring system, greatly increasing efficiency. Normally, the jellyfish emits one jet right after the ...
December 3, 2014

Pre-Calc/Trig...
Okay, thank you :)
December 3, 2014

Pre-Calc/Trig...
is this the correct formula for me to solve this? A bacteria culture has 2,000 bacteria. The number of bacteria increases by 5% each hour. How many bacteria are there after 12 hours? 2,000*0.05^(12-1)
December 3, 2014

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