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January 31, 2015

Posts by abby


Total # Posts: 714

geometry
A guy wire is attached to the top of a 75 meter tower & meets the ground at a 65 degree angle. How long is the wire?
March 23, 2011

Math
tan(x)=5 sin(x) for interval -π < x < π
March 23, 2011

Physics
A photon of energy E strikes an electron at rest undergoes pair production, producing a positive electron(positron) and an electron, photon+electron produce positron+electron+electron The two electrons and the positron move off with identical momenta in the direction of the ...
March 22, 2011

Physics
The temperature of your skin is approximately 35C degrees. What is the wavelength at which the peak occurs in the radiation emitted from your skin?
March 22, 2011

chemistry
you must prepare 300 mL of .750M NaBr solution using 2M NaBr stock solustion. how many mL of stock solution should you use?
March 17, 2011

apples
Is the saying "an apple a day keeps the doctor away" true?
March 14, 2011

Etymology
Thankyou!
March 13, 2011

Etymology
I am doing a project on Fascinating Etymology Stories and was wondering if you guys know of any good websites with interesting stories of the origin of words, preferrably not words that came from a persons name. Thanks:)
March 13, 2011

etymology
how did wrigley come up the orbit. not the actually product but i need to know the orgin of the product name orbit. thanks:)
March 13, 2011

chem
Determine the volume of 0.240 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is shown below. H2SO4(aq) + 2 KOH(aq)--> K2SO4(aq) + 2 H2O(l) (a) 26 mL of 0.240 M H2SO4 thanks
March 11, 2011

science
determine the molar concentration of Ca^2+ and Cl- in a .075 M CaCl2 solution
March 9, 2011

chemistry
Calculate the molarity of each of the following solutions. 1. 61.9 g of C2H6O in 3.4 L of solution
March 9, 2011

5th grade math
this is soooooooooooooo BORING
February 25, 2011

History
If you could summarize the fighting in the Soviet Union between 1941 and 1944 into one sentence what would you say??
February 21, 2011

child day care management,health,safety,and nutrit
which of the following are the three major types of knowledge identified by piaget
February 16, 2011

physical
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 142-kg laser sensor that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of ...
February 2, 2011

Chemistry
Kinetic energy is calculated from the formula KE = (1/2)mv2. Suppose a mass of 14.2 kg (m = 14.2 kg) is moving with a velocity of 750. ms-1 (v = 750. meters per second). Calculate the kinetic energy of this mass in units of Joules.
January 25, 2011

Physics
This is a conservation of angular momentum problem. Now, the formula for angular momentum is: L = Iw So basically, L before = L after: I1w1 = I2w2 The trick to solving these is to figure out what the change in moment of inertia is, and then apply the concept of conservation of...
January 23, 2011

science
if an astraunout could jump 40 cm on jupiter how high could he ir she jump on earth how about the moon also????? pleese help me im stuck on this question
January 9, 2011

Math
Thanks Ms. Sue
January 9, 2011

Math
$260
January 9, 2011

Math
Lyla deposited $250 in an account earning 4% simple interest. At the end on one year, how much was in the account, assuming no more deposits or withdrawals?
January 9, 2011

Math symbols
thank you!!!! :) :) :)
December 20, 2010

Math symbols
thanks and do you know what "*" means in math?
December 20, 2010

Math symbols
What does * mean in math? thanks for ur help Abby
December 20, 2010

statistics
Scores on the ACT test are normally distributed with a mean of 21.1 and a standard deviation of 4.8. If one ACT score is randomly selected, find the probability that it is greater than 20.
December 14, 2010

physics
how much work is being done if a 100 N box is lifted 3 meters off the ground???
December 10, 2010

7th grade
I am doing a battle chart in history class the I need to know who won the Gonzales battle Also i need the mexican leader and the texas leader and who won on in the battle of the concepcion and where the goliad battle took place and when it took place also i need all the grass ...
December 9, 2010

math
what multiplication fact could you use to find a number that can be divided evenly by 8 and by 9
December 9, 2010

us history
I need help finding information about the Industrial revolution. How it impacted American society economically, socially, politically, and morally. This needs to be a 500 word essay. Thanks for the help! :)
December 6, 2010

Physics HELP!
how is this equation right? when i multiplied all those numbers to get T1 i got a huge number...to plug it back in for T2 i would get a negative number...
December 5, 2010

physical science with earth science
Write a balanced chemical equation for the reaction for propane C3H8 burning in oxygen to for carbon dioxide and water vapor
December 2, 2010

math
880
December 1, 2010

science
A place or object used for comparion to determine whether something is in motion is called what?
December 1, 2010

math
60
December 1, 2010

8th grade
I don't understand constant rate of change can you give me some examples. The graph I have shows the depth of the water in a vase over 8 days
December 1, 2010

social studies
information about landform
November 30, 2010

math
61 devided by 6039
November 29, 2010

Science
if it takes 20 newtons to accelerate an object weighing 15 kg 0.1 meters per second squared to the west what is the force of kinetic friction?
November 25, 2010

math
A circular racetrack has a diameter of 200 meters. What is the approximate distance a car travels in meters for three full revolutions around the track? use 3.14 for pie.
November 21, 2010

trig
sin(pi/3)
November 16, 2010

world issues- amazon deforestation
I just need like facts on ways to stop deforestation. -_-
November 16, 2010

world issues- amazon deforestation
Are you asking me this?
November 16, 2010

world issues- amazon deforestation
Hi. I was assigned an essay that I have to get done by 2morrow. It is about Amazon rainforest deforestation. I have to sum everything up into 3 paragraphs. 1st paragraph- tell what's happening here; I already did this. 2nd & 3rd paragraphs- describe how you would stop ...
November 16, 2010

Math
Nope
November 15, 2010

Math
Rae runds a mile 20 times. Her average time is 5.2 mins. She wants to drop her slowest time 5.8 mins and find the ew average. Write and equation to find are her new average running time
November 15, 2010

8th grade
Maybe you should just make it as math instead of 8th grade. I suggest you post it agin.
November 15, 2010

math
Originally priced at $35 now on sale for 25% what proportion could you do to find d the discount of the price
November 15, 2010

Mathh
Originally priced ar 35 dollars now on sale for 25% find an proportion to find d. d/35 = 25/100
November 15, 2010

10th grade geo
An Important Fact About YOU! Worksheet.
November 15, 2010

math
jared spent 76 dollars in june. In july he spent 1/5 more money than he did in june which procedure can be used to determine the money he spent in july add 1/5 abd 75 multiply 1/5 abd 75 then add 75 multiply 1/5 and 75 divide 1/5 by 75 then subtact the result fron 75
November 15, 2010

Pre-algebra
Thank you for your help!
November 15, 2010

Pre-algebra
So 7t = -98. What is t?
November 15, 2010

english
If direct exposition means direct characterization, then true. Characterization is how the author helps you find out the personality traits of a character. Let's say if the story read; Yang was a very nice child from China. This would be DIRECT characterization. If the ...
November 15, 2010

english
Are you trying to ask if this is a correct sentence? If that is your question, than yes, it is a correct sentence. Only you need capitalization.
November 14, 2010

8th grade math
J=31-q or 31-q=J
November 14, 2010

Social Studies
WOW! That is ALOT of information!
November 10, 2010

algebra
Thank you I just didn't know if it was supposed to be a negative number or not. My math that I have is really confusing.
November 10, 2010

algebra
12 - 3b = what? for b = 4.3
November 10, 2010

algebra
a lot lot lot lot lot lot lot lot lot lot lot LOT!!! That is probably too big of a number to say.
November 9, 2010

french
check ending of tu form. Monica is intelligent. What is feminine adjective ending?
November 9, 2010

physics
Need equation: Mass of 4.24 kg acted on by external force that reduces velocity from 8.5 m/sec to 4.1 m/sec in 3.0 sec. Find magnitude of the retarding force?
November 9, 2010

physics
Mouse steals piece of cheese by rolling across the floor with a force of 5.0 N. With what acceleration does the cheese move? At what speed is the cheese rolling after 10 seconds?
November 9, 2010

Spanish 1
34. What's the opposite of alli. 36. Is lapiz masculine or feminine? Notice you are working with UN boligrafo.
November 9, 2010

6th grade
All you have to do to turn a fraction into a decimal is divide the numerator by the denominator. 5 divided by 8 = 0.625.
November 8, 2010

math
a bicycle rider left town at noon at traveled at a uniform rate of 15 miles an hour. at 2 pm the same day, a motorcycle rider left for the same place at a uniform rate 30 miles an hour higher. at what time did the motorcycle rider overtake the bicycle rider?
November 7, 2010

science
Mexico is actually the leading producer of silver followed by U.S., Canada, Australia, Spain, Peru, and lastly, Russia. Hope this helps Abby
November 7, 2010

enviroment
i have this quetion and answer thing and i am having troubles with the meanings can anyone help me?
November 3, 2010

algebra
Awesome! Thanks
November 3, 2010

algebra
If there was a problem like this: 2yx for y=8 and x=5, you would write it like this: 2(8)(5). Which do you multiply first? 8x5 then x2 or 2x8 then x5?
November 3, 2010

science
Yes. It will help us because it is an renewble energy souce. that is what I think.
November 3, 2010

Science
Should we use biomass?
November 3, 2010

6th grade
242
November 3, 2010

math Trig
find each ratio to 3 decimal places cot245degrees sec74degrees how do i do this?
November 3, 2010

Spanish
sorry, I meant sentEnce.
October 27, 2010

Spanish
It mens where are you from. Dónde means where, and eres means you are. Put those in a scentance and it asks a question.
October 27, 2010

4th grade science
Wow this is a hard one.
October 25, 2010

3rd grade
the answer would be 50 because if he wants to be rounding to the nearest 10 then that's what it would be
October 25, 2010

Calculus ll - Volumes
No, actually. It is y=1. I sketched out the solid of the equations, and I believe it's a washer.
October 7, 2010

Calculus ll - Volumes
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. y=e^(-x), y=1, x=2; about y=2.
October 7, 2010

math
it is spelled like this eight million, forty-two thousand, one hundred seventy-six.
September 30, 2010

H. Physics
A plane travels 2.5 km at an angle of 35 degrees to the ground and then changes direction and travels 5.2 km at an angle of 22 degrees to the ground. what is the magnitude and direction of the plane's total displacement?
September 29, 2010

H. Physics 11th grade
while flying over the grand canyon, the pilot slows the plane down to one-half the velocity in item 3. If the wind's velocity is still 75 km/h toward the southeast, what will the plane's new resultant velocity be?
September 29, 2010

11th grade
A roller coaster moves horizontally, then travels 45 m at an angle of 30 degrees above the horizontal. What is its displacement from its starting point?
September 29, 2010

6th grade, social studies
is in goverment
September 27, 2010

A&P
___________are usually attached to rough endoplasmic reticulum and produce enzymes and other protein componds.
September 19, 2010

Calculus
let V be volume of the solid obtained by rotating about the y-axis the region bounded by y=sqrtx and y=x^2. find V both by slicing and by cylindrical shells. in both cases, draw a diagram to explain your method. I'm SO stuck!
September 15, 2010

Calculus
find volume of solid obtained by rotating region bounded by curves y=x and y=sq.rt x, about line x=2
September 15, 2010

reading
shoud i add a predicate or a subject to this sentence this baseball team.
September 8, 2010

business information system
Identify the ROI and NPV of the wireless order-taking system. ...
September 2, 2010

Math
So i was given a graph of h(x) and i am supposed to approximate h^-1(3) but i'm not sure about how to do it. could anyone tell me how to find the solution? THANKS!
August 24, 2010

Algebra 2
Make a table with a process column to represent each pattern. Write an expression for the number of tiles in the nth figure. The picture is a column of squares that is 4X6. In each figure its subtracting a square.
August 18, 2010

6th grade science acrostic
Helpppp!!!!!!!!!!I need help on the acrostic. Can you people help? Okay, I need to do an acrostic on photosynthesis, devoured,and extinct.....Thank you if you help.....Rlyyyyyy THANKS
August 16, 2010

Science
Why does the water of lakes and oceans look alike?
August 15, 2010

maths
z = x-y+4 z = y-w-3 z = w-x+5 Based on the system of equations above, what is the value of z? a) 2 b) 3 c) 4 d) 6 e) 12
July 11, 2010

math
What you saying
June 9, 2010

math
Thank you I thought so
June 9, 2010

Math
A survey was made of 200 students to study their use of the public library system. The findings were as follows: 60 used the Reader’s Guide. 28 used both the card catalog and the information booth. 68 used the information booth. 83 did not use the library. 43 used only ...
June 6, 2010

Chemistry
Predict the effect of each of the following on the indicated equilibrium system in terms of which reaction will be favored (forward, reverse, or neither) H2(g)+Cl2(g)<=>2HCl(g) +184 kJ A)addition of Cl2 B)removal of HCl C)increased pressure D)decreased temperature E)...
May 18, 2010

math
Without graphing, identify the slope and the y-intercept. y = -4x + 5
May 16, 2010

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