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October 25, 2014

Posts by abby


Total # Posts: 648

Fractions
solve 9/10(3+8x)+3¡Ý15 How do you multiply the fraction?
September 23, 2011

Geometry
Two supplementary angles are in the ratio 7:11. Find the measure of the smaller angle.
September 22, 2011

Science
Why whales live in oceans?
September 21, 2011

Science
Ibook batteries last for 5 hours What is the independent and dependent variable? What is the control group?
September 12, 2011

Physics
Simpson drives his car with an average velocity of 45.1 km/h to the east. How long will it take him to drive 153 km on a straight highway? Answer in units of h
September 8, 2011

math
Help
September 1, 2011

Language
Thank you so much! May i ask what you do for a living?
August 29, 2011

Language
I think its , danced across the sky
August 29, 2011

Language
What is the predicate in the following sentences? The glowing stars danced across the sky. Camping is a lot of fun when you have a friend with you.
August 29, 2011

math
what is 8+10+2/12+4/9 in lowest term if possible
July 30, 2011

Chemistry!
A Galvanic cell runs on the following reaction: Co (s) + Cu2+ (aq) → Co2+ (aq) + Cu (s) Draw a diagram for this Galvanic cell, labeling the electron flow, the anode and cathode, and the positive and negative sides of the Galvanic cell.
June 30, 2011

ANOTHER SCIENCE
Consider the following reaction that has reached equilibrium: NH3 (aq) + C2H4O2 (aq) ! NH4+ (aq) + C2H3O2- (aq) ∆H = -102.1 kJ a. What will happen to the concentration of NH4+ (aq) if the temperature is raised? b. What will happen to the concentration of NH4+ (aq) if the...
June 30, 2011

Science
The following reaction: 2SO3 (g) ! 2SO2 (g) + O2 (g) has an equilibrium constant equal to 0.23 M. If the following concentrations are present: [SO2] =0.480 M, [O2] = 0.561 M, [SO3] = 0.220 M, is the reaction at equilibrium? If not, which way must it shift to reach equilibrium?
June 30, 2011

Chemistry
Write a balanced net ionic equation for the oxidation of metallic copper to Cu(II) ion by hot concentrated H2SO4, in which the sulfur is reduced to SO2
June 29, 2011

Chemistry
moles would be 118g divided by 342.3?
June 29, 2011

chemistry
0.5 M1V1=M2V2
June 27, 2011

chemistry
how many milliliters of hydrogen at 0 degree C and 1400 mmhg are produced if 15g of magnesium reacts with sulfuric acid?
June 16, 2011

math
0.00186 L of SO2
May 25, 2011

Math
M=1.05
May 6, 2011

Math
1.05
May 6, 2011

Algebra
Members of the Lake Shawnee club pay $40 per summer season plus $7.50 each time they rent a boat. Nonmembers pay $12.50 each time they rent a boat. How many times would both a member and a nonmember have to rent a boat in order to pay the same amount?
May 6, 2011

creative writing
Is there a personification example in the song: Did You Ever Know That You're My Hero
May 5, 2011

Math
Perform the following multiplication. Be sure answers are reduced to lowest terms. (Enter as an improper fraction.) 2 1/2 x 1 3/8 =
May 3, 2011

physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 s...
April 8, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing...
April 7, 2011

Physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 s...
April 7, 2011

Physics
it is π (pi)
April 7, 2011

Physics
Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2 J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to prevail for 5.0 ...
April 7, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 5, 2011

Physics
An air rifle is used to shoot 1.0 g particles at 100 m/s through a hole of diameter 2.0 mm. How far from the rifle must an observer be to see the beam spread by 1.0 cm because of the uncertainty principle? Compare this answer with the diameter of the universe (  1026 m).
April 5, 2011

Physics
To what voltages must we accelerate electrons (as in an electron microscope, for example) if we wish to resolve; a) a virus of diameter 12 nm , b) an atom of 0.12 nm, c) a proton of diameter 1.2 fm?
April 4, 2011

Physics
Electrons in a beam incident on a crystal at an angle of 300 have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5A0, and the reflected electrons are passed through a slit .Find the velocities of the electrons passing through ...
April 3, 2011

Physics
Two converging lenses with focal lengths 5 cm and 30 cm are placed 35 cm apart. Rays from a very distant object are impinged on the lens system parallel to the principal axis. What is the refractive power of the combination of these two lenses?
March 26, 2011

Pre Calc
Thanks so much guys!!!!
March 23, 2011

Pre Calc
tan(x)=5 sin(x) for interval -π < x < π A) 0, 1.571 B) -1.571, 0, 1.571 C) -1.369, 0, 1.369 D) 0, 1.369
March 23, 2011

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

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

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