Sunday
December 21, 2014

Posts by Erik


Total # Posts: 78

Physics
A ball starts 1.175 meters off the ground and shot at an angle of 40 degrees with a velocity of 3.2 m/s. Where does it land?
November 11, 2014

Math
You complete 3centimeters of a necklace in an hour. Each hour after the first, you triple the length of the necklace. Write an expression using exponents for the length of the necklace after three hours. Then find the length.
September 19, 2014

ecenomics
how would you describe the impact of factory goods
September 3, 2014

Math
Find and express the results in polar form for the following: z = 2(e^(-jω) - e^(j7ω)), where ω = omega j is the math equivalent of i = sqrt(-1)
August 29, 2014

grammar
Thank you for answering my question. What made me confused is that in my study guide, "land of liberty" is listed as a compound noun. I am still confused why "land of liberty" is a compound noun but "game of football" is not. Thank you for your help!
June 30, 2014

grammar
In the sentence - "Tom could see the anger in Mr. Adams' face." is "Mr. Adams' face" a compound noun? I know Mr. Adams' is a possessive noun and face is a common noun but I am supposed to list compound nouns. Same with the sentence "The ...
June 30, 2014

Calculus Help and Check
58,000
April 29, 2014

math
a piece of silver density 10.5g displaces 4.5ml {cubed} of water in a test tube what is its mass?
February 4, 2014

English
no it is not
February 4, 2014

math
Jill bought a can of pop for .75 and jane bought a 6 pack.for 3.60 who got the best buy and why is it the best buy
March 31, 2013

science
10 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.1 M C2H3O2-. What is the pH of the resulting solution?
March 15, 2013

science
What is the gravitational potential energy of a 2kg ball on planet earth raised 15 meters in the air?
January 22, 2013

Math
On a Christmas package, Audrey needs to use only 40-cent stamps and 16-cent stamps. If she uses twice as many 40-cent stamps as 16-cent stamps, how many of each type of stamp must she use to mail a package costing $5.76 in postage?
January 18, 2013

statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16 of M. californianus. ...
November 14, 2012

statistics
Settlement of two species of mussel larvae was studied. In a wave exposed location, a collector pad yielded 108 larvae of Mytilus trossulus and 72 of M. californianus. In a wave sheltered location, a collector pad yielded 54 larvae of M. trossulus and 16 of M. californianus. ...
November 14, 2012

Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31 samples from a location...
November 7, 2012

Statistics
Lead (Pb) concentrations were measured in waterfowl eggshell samples from two locations. In n1 = 41 samples from a location downstream from a paper mill, the mean Pb concentration was 1 x = 0.13 ppm with a standard deviation of s1 = 0.04 ppm. In n2 = 31 samples from a location...
November 7, 2012

Science
5.00 ml of 1.90M HCl is diluted to 0.400l. calculate the pH of the HCl?
September 25, 2012

nervous system
The pulmonary circuit and the ________ circuit make up the blood vessels of the body. A. Flexible B. Systemic C. Blood D. Capillary c?
August 26, 2012

body systems
i know its A i googled it
August 26, 2012

body systems
D?
August 26, 2012

body systems
Veins carry blood ________ the heart. A. Away from B. Towards C. Closer to D. All of the above c?
August 26, 2012

health
ummm A?
August 26, 2012

health
me too hahaha
August 11, 2012

asdf
18.87
July 22, 2012

statistics
Suppose that a given population of trees have an average height of 10.2 ft and a standard deviation of 1.3 ft. Find the proportion of the population with heights above 11.8 ft.
May 3, 2012

Math
In the number 22! determine the largest prime factor.
January 30, 2012

chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq...
January 29, 2012

chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)<=>Cl^1-(aq)+HS^1-(aq) This is what I ...
January 29, 2012

Math
A sequence of four integers is both arithmetic and geometric. if the sum of the four numbers is 20, find the first integer in the sequence.
January 29, 2012

algebra
if four individuals share $270 in the ratio of 1:1:2:5, how much is the lagest share?
January 24, 2012

Physics: Three Identical Masses
Three identical masses of 640 each are placed on the x axis. One mass is at = -100 , one is at the origin, and one is at = 400 . What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? Take the gravitational constant to be = ...
October 3, 2011

Physics
A car goes around a curve on a road that is banked at an angle of 32.5 . Even though the road is slick, the car will stay on the road without any friction between its tires and the road when its speed is 19.0 . What is the radius of the curve?
October 3, 2011

Trigonometry
Nevermind, figured it out myself....
July 2, 2011

Trigonometry
Verify Identity: cos5x-cos3x=-8sin^2x(2cos^3x-cosx)
July 2, 2011

English
Maya Angelou - I Know Why the Caged Bird Sings What Maya Angelou means by the title of her autobiography.? Please Help if you can
June 17, 2011

Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?
May 6, 2011

Chemistry
Mg + 2HCl --> MgCl2 + H2 #mol=molarity x volume (3.00) x (.0132 L) = .0396 mol HCl half this in accordance with you balanced chemical equation to get #mol H2 = .0198. relate #mol of gas to volume --> (.0198) x (22.4) = 0.444...closest answer, (D.
May 5, 2011

Statistics
Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?
May 4, 2011

Statistics
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?
May 4, 2011

Chemistry
Im stuck on this question. The unusual aspect of functional group replacement of an alcohols hydroxyl group by chlorine by treatment with thionyl chloride is: A)spontaneous creation of a carboccation and SO2 Cl,the ion pair created by SOCl's mechanism of action. B)That ...
April 28, 2011

Math
I cant figure this question out. I could use some help. Solve for x lnx-lnx^2+ln5 = 0 Simplify the answer
April 27, 2011

physics
what is the torque a bolt with 30 cm wrench with an applied force of 650n?
April 15, 2011

chemistry
Why was the 400.5 multiplied by 100, then divided by the 694.8???
April 8, 2011

trig
1/4tan(2x)
March 15, 2011

7th social studies
from Kuwait go east to
January 5, 2011

Chem
what is the empirical formula of aspirin, C9H8O4? is it the same again ?
January 2, 2011

phi 103
is not the most important factor they consider when comparing two films---- not sure about this, but it seems to be the best answer
December 18, 2010

physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest? What moment of inertia do I use to figure our the torque?
December 12, 2010

physics
A 4.0 kg pulley of radius 0.15 m is pivoted about an axis through its center. What constant torque is required for the pulley to reach an angular speed of 25 rad/s after rotating 6.0 revolutions, starting from rest?
December 11, 2010

12th grade
The kinetic energy of a 50 newton object resting on the edge of a cliff 30 meters high is?
November 18, 2010

English
I'm not really sure what you mean-I just didn't understand this-I'm not pretending to be anyone else- I just needed help with this
September 8, 2010

English
Please help me interpret this-I'm in 8th grade and I don't have any idea: What is the main idea? Read the following quote from Thomas Paine's pamphlet, Common Sense. Summarize the main idea of the passage. "Some writers have so confounded society with ...
September 8, 2010

College math
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the nearest 10-thousandth ...
September 7, 2010

mathematics
A circular water stain on your home ceiling had a diameter of about 4 inches across on Monday at 8 A.M. On Tuesday at the same time it was about 5.3 inches across. The unit for time is days. (1) Calculate the growth rate as a percentage to at least the nearest 10-thousandth ...
September 7, 2010

verbs
thanks again
August 17, 2010

verbs
In heaven there are many mansions. "are" is the verb right
August 17, 2010

verbs
thank you!
August 17, 2010

verbs
thanks you!
August 17, 2010

verbs
A signed warned drivers about falling rocks along the street. in this sentence would the only verb be warned because falling is an adj describing rocks
August 17, 2010

High School Science
A ray of light goes from water (nwater=1.333) into ice (nice=1.309). Which of the following statements is true? 1) The ray gets closer to the normal after crossing the interface. 2) The ray does not change directions after crossing the interface. 3)The ray gets farther away ...
March 20, 2010

8th grade science
What is radiation?
March 18, 2010

biology
Why might it be worse to get an infection from someone in the hospital than from someone on a bus? is it because how bad the infection is, usually people that are in the hospital are in bad condition
February 24, 2010

4th grade math
Thank you Ms. Sue!
February 17, 2010

4th grade math
Judy and Ramey together have 42 stuffed animals. Judy has 12 fewer animals than Ramey. How many stuffed animals does each girl have? I know that the answer is Ramey has 27 and Judy has 12 but I don't know how to write the equation for solving it. I figured out the answer ...
February 17, 2010

Washroom Fix Urgent
what causes water to leak after you've replaced the wax ring on the toilet?
September 23, 2009

Learning
can anyone give me a site from which I can learn educational things, it can be game types of sites, I don't mind that as long as it isn't boring
July 20, 2009

Jokes
I am in need for a funny joke which I need to add in my skit. Please give me your ideas, and with them I will try to make mine, thanks:-)
July 20, 2009

Games
yes that was actually my sister who needed to know if webkinz is safe, as she is younger than me, and yeah we do have an antivirus progam
July 20, 2009

Games
my sister need that answer
July 20, 2009

Games
thanks
July 20, 2009

math
what is the constant variation 3.2x+3y=6 4.3x-1=7y-1 write each lineat equation in slope intercepy form 1.x=-2y-7 solve the equation 1.x-15=27
October 20, 2008

10th grade math
solve each equation for y. do x and y vary directly? if so indentify the constant of variation. 1.4x=5y 2.2x+3y=6
October 20, 2008

5th grade math
how you Magnitude Estimates
October 12, 2008

language
Nephthys
October 10, 2007

biology
under what condtions is a hypothesis supported
August 29, 2007

PLEASE HELP SOLVE RIDDLE
ok your dead and in a room and theirs a door to heaven and a door to hell and you dont know which is which and theres two twins in the room and one always lies and one always tells the truth and you can only ask one question and you dont know which twin is which HELP ME PLZZ
March 23, 2007

thesis statement
need a hook + thesis statement for a paper on psychoanalysis Psychoanalysis is a really broad subject. Narrow the subject considerably, and then worry about thesis. As it is, you could write a very, very large book and not finish the subject.
October 26, 2006

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