Monday
December 22, 2014

Posts by nina


Total # Posts: 491

Biology/Zoology
Do bony fishes have a dermal bone?
January 25, 2011

Science
For my Biology class, I need to find and print out an article that talks about renewable resource technology or new technology that is beneficial to the environment. Can anyone help me find any good ones?
January 12, 2011

childcare
what taxes must be paid only by the employer?
January 6, 2011

Chemistry
given the equation Mg +2HCL --> MgCL2+H2, how many moles of hydrochloric acid are needed to react with O.50 mol of magnesium ? (1)0.5 (2)1.0 (3)2.0 (4)4.0 is it 3 ?
January 2, 2011

chemistry
A student wants to determine of an irregularly shaped peice of sodium metal . The student is warned not to use water displacement to find the volume of the peice of sodium . Explain the reason for the warning and pffer a effective solution to the students' problems
December 5, 2010

physics
A 70 kg man jumps 1.00m down onto a concrete walkway. His downward motion stops in .02 seconds. If he forgets to bend his knees, what force is transmitted to his leg bones?
November 21, 2010

algebra
A 384-m wire is cut into three pieces. The second piece is 3 m longer than the first. The third is four-fifths as long as the first. How long is each piece?
November 21, 2010

Math
A 384-m wire is cut into three pieces. The second piece is 3 m longer than the first. The third is four-fifths as long as the first. How long is each piece?
November 21, 2010

physics
a child is sliding on a sled at 1.5m/s to the right. You stop the sled by pushing on it for 0.50 s in a direction opposite to its motion. If the mass of the child and the sled is 35kg. what average force do need to apply to stop the sled. Use the concepts of impulse and motion
November 18, 2010

Statistics
Quick Normal/InvNormal Calculator In a study of human mortality rate, an Actuary estimated that in US and Canada, about 78% (fictional figures) of life insurance claims resulted from accidental deaths. Suppose a study is being planned to estimate the relative frequency of ...
November 17, 2010

Chemistry
Reverse the equation to be H2O (g) --> H2O (l) delta H= -44kJ There are 9.0 grams of H2O (g) Find moles of the gas: 9.0/16= .50 moles 44 times .50 =22 kJ evolved
November 15, 2010

6th grade ANSWER
You have to turn a fraction into a decimal by taking the numerator and divide by the denominator, 5 divided by 8 is 0.625 so that is your answer! :D
November 8, 2010

Pharmacology
Question # 13 answer is neuroleptic malignant syndrome
October 28, 2010

geometry
Given the right triangle JKL, whose arean is 32 sqare units, determine if it is an isoceles right triangle.
October 26, 2010

Physics
The boy on the tower of height h = 10 m throws a ball a distance of x = 68 m, as shown. At what speed, in m/s, is the ball thrown?
October 24, 2010

test
grammar --verbs ) a helping verb is the verb that help the main verb make its statement(true or false)
October 21, 2010

calculus
Find the derivative by the limit process. 6/√(8x)
October 15, 2010

business
Hi all,, so am taking strategic management now and our Dr gave us same case and same questions apparently,, any of you happens to still have or remember the answers? Am totally lost with the "concerned commodity" question
September 26, 2010

world health organisation
find out about world health organisation
September 19, 2010

math
what is the time halfway between 10:30 am and 3:00 pm?
September 16, 2010

Music appreciation
symphonie fantastique, which depicts an artist's execution by guillotine, was written by the nineteenth century composer
September 15, 2010

Math
Each of the three dimensions of a cube with sides of lenth s centimeters is decreased by a whole numer of centimeters. The new volume is cubic centimeters is given by V(s)=s^3-13s^2+54s-72. a) Find V(10) b) If the new width is s-6 centimeters, then what are the new length and ...
September 12, 2010

Math
Tropical Pools sells an aboveground model for p dllars each. The monthly revenue for this model is given by the formula R(p)+ -0.08p^2 + 300p. Revenue is the produce of the price p and the demand(quality sold). a0 Factor out the price on the right-hand side of the forula b) ...
September 12, 2010

math
Hoshi walks 10 meters in 3 seconds what is her walking rate
September 5, 2010

gometry
[3.05] In, angle C is (7x - 3) degrees and segment AB = (3x + 12)mm. Part a. What value of x would make equilateral? Part b. What is the perimeter or sum of the lengths of the sides of the equilateral triangle? Be sure to include the unit of measure in your solution
July 1, 2010

algebra
Solve equation L=2.43*.034^.3326
June 26, 2010

general studies
I'm trying to narrow down/refine thesis statementt about women vs. men, being as ruthless and capable of voiulenbt crime. Any ideas?
June 14, 2010

english
One of the most popular artists of the 1700s was Rosalba Carriera. She was born in Venice in 1675, and from her childhood she showed artistic talent. When she was 30, in 1705, the Roman Academy honored her as a painter of miniatures. Fifteen years later, in the spring of 1720...
June 13, 2010

world history
According to Procopius, two sixth century Christian monks undertook an elaborate smuggling operation to provide Byzantium with the knowledge to produce
June 10, 2010

Math
On a scale drawing,the scale is 1/4 inch:1 foot. Find the dimensions of each room in the scale drawing. How would you find the answer? 10 feet by 9 feeet
June 9, 2010

Physics
(a) calculate the energy in joules put out by a 9.0 V calculator battery that moves 3.0 C of charge through a handheld calculator after 1 hr of operation. (b) calculate the energy put out by a 12.0 V car battery that moves 1000 C of charge (as it may when starting the car'...
May 10, 2010

Physics
Calculate how far and apart two indentical charges of 1.0 C must be in order for the Coulomb force between them be less than 500 N
May 10, 2010

Physics
thx
May 10, 2010

Physics
How many electrons must be removed from an object to leave it with a charge of 2.0 x 10 exp-10C? This is a small though not neglible static charge.
May 10, 2010

Physics
for same question above if the charge is increased by a factor of 10 what number am I increasing? and am I increasing it by adding or multiplying?
May 10, 2010

Physics
calculate the force between two identical charges of 1.0 x 10 exp -9 C separated by 1.0 Cm
May 10, 2010

Physics
So if one electron is 1.6 x 10 exp -19 C it would be -1.0 x 10exp-9C divided by 1.6 x 10 exp -19 C correct?
May 10, 2010

Physics
How many excess electrons does an object with a total charge of -1.0 x 10exp-9C have on it? This is approximately the amount of charge involved in commonly encountered static electricity.
May 10, 2010

Us constitution
what the United States may have looked like had the Anti-Federalists "won" their points in the ratification debate and the writing of the Constitution
May 4, 2010

Physics
An ice cube having a mass of 50 g and an initial temperature of -20⁰C is place in 400 g of water 30⁰C water. What is the final temperature of the mixture if the effects of the container can be neglected?
April 19, 2010

apchemistry
If you have CL2 + H2o ---> H+ + Cl- + HOCl and you are given [HOCl] = 0.06 M and you have to find pH.... can you assume that [HOCl] =[H+] = 0.06 M since H+ and HOCl both have a coefficient of 1? Thank you
April 18, 2010

Mathematicas
Sam and Susie are twins. Sam has as many brothers as he has sisters. Suzie has at least 1 sister, and twice as many brothers as sisters. How many kids are in the family altogether?
April 18, 2010

Mathematicas
Sam and Susie are twins. Sam has as many brothers as he has sisters. Suzie has at least 1 sister, and twice as many brothers as sisters. How many kids are in the family altogether?
April 17, 2010

4 Grade
About how many people lying head-to-toe are needed to strech around the earth? Is it closest to : a) 1 million; b) 25 million; c) 100 million? (Hint: The distance around the earth is approximately 25,000 miles).
April 6, 2010

computer programming
Construct a structure chart, as well as a flowchart and pseudocode, for the following problem. Assume that each input record contains a taxpayer’s name, the value of a personal property belonging to the taxpayer, and a code defining the type of of personal ...
March 22, 2010

Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack? Mr. L answered to my question like this: 6/8 + 1/8 + 2/8 + Mom = ?/8 ...
March 9, 2010

Math
It will be 13/8 = 1 5/8. Is that right?
March 9, 2010

Math
Julio ordered towo pizzas for dinner Friday. Dad ate 3/4 of one pizza, Jenny ate 1/8 of a pizza, Danny ate 1/4 of a pizza, and Mom ate 1/2 of a pizza. What fraction of a pizza was left for a midnight snack?
March 9, 2010

math
how do I graph this? y = -1/3 |x-2| like, I can do the simple ones (ex: y = -|x+3|), where you put random number for x and get the y value and graph it.. but the fraction confused me.. thanks in advance
March 9, 2010

Math
In the United States, every 57 minutes an underage drinker is involved in a traffic fatality. A recent report urges a crackdown on teen-age drinking and driving. Estimate the number of underage drinkers involved in traffic fatalities each day.
March 3, 2010

Physics
what am I converting?
February 8, 2010

Physics
When the brakes of a certain car are applied, a deceleration of 6.0 sec squared is produced. a) How much time will it take to bring the car to a halt from an initial speed of 110km/hr? b) How far will it travel in that time?
February 8, 2010

History
How did the economical compostion during coperate greed in the 1980s and how it affected the political climate during this time. Is this asking for me to put in how Reagan gave to the rich and not the poor?
February 2, 2010

physics(universal law of gravitation)
a satellite has a mass of 100 kg and is located at 2 x 10^6 m above the surface if the Earth. wHAT is the potential energy associated with the satellite at this location? What is the magnitude of the gravitational force on the satellite?
January 14, 2010

Math
log6(x+7)−log6x=2 Solve for x
January 10, 2010

Logs
log6(x+7)−log6x=2 Solve for x
January 10, 2010

Juvenile Justice
I need to write a profile on risk indicators for youths that could be invloved in gangs. How can I write this without looking like an actual paper, but more or less like a handout that is going to be given?
December 15, 2009

Math Help
Prove that the cancellation law of multiplication is equivalent in a commutative ring to the assertion that the product of non-zero factors is not zero
December 11, 2009

U.S. History
Defend McCarthyism as appropriate for the time in which it occurred.
December 3, 2009

social studies
what political party did saddam hussein lead in iraq
November 30, 2009

Pre-Algebra
I am having trouble understanding how to answer this type of question: Find each procuct or quotient: Express using positive exponents: (b to the power of negative 10)(b to the power of 5)
November 23, 2009

science
My grandson is in 4th grade. His teacher assigned the class to make a container that will keep an ice cube frozen for several hours while inside. Do you have any ideas?
November 17, 2009

physics
One projectile is launched horizontally while another is dropped from rest at the same time. Which will hit the floor first?
November 16, 2009

social studies
Rude...^ I I I I
October 12, 2009

Math Analysis (similar to my previous question)
A + B = < 30,000 A > = B B = < 12,000 B return > A return In order to maximize money we have to invest it. The rate of retern is highest with the B bond so, A + 12,000 = 30,000 B = 12,000 A = 18,000
October 6, 2009

Math Analysis
1700 > = C (calories) > = 900 0.30(1200) = 360 max calories from fat 372 > 360 too much fat
October 5, 2009

Grade 7 Math
1 + 99 2 + 98 3 + 97 ............... ............... 49 51 + 50 49(100) + 50
October 5, 2009

math
max say max is innocent james says max and james is innocent brett says max and james is innocent if max and james are innocent both james and brett would be telling the truth which means two people would be innocent -> max is telling the truth that he is innocent -> ...
October 5, 2009

Math
bedmas brackets then equations then division then multiplication then addition then subtration
October 5, 2009

Math
Bedmas brackets equations division multiplication addition subtraction 2 + 1/8 = (16 + 1)/8 = 17/8
October 5, 2009

Chemistry
how can i know if a solution is aqueous or solid? i have a test tomorrow and dont know how to do this PLEASE HELP!!! i have this question on my homework...Will precipitation occur when the following solutions are mixed? 1. Na2Co3 and AgNO3 2. NaNO3 and NiSO4 3. FeSO4 and Pb(NO3)2
October 4, 2009

Economics
goods produced by the govt are called public goods. externalities are things which you can not charge for ie a negative externality would be smog a positive externality would be clean air
October 4, 2009

chemistry
how can i Specify what ions are present in solution upon dissolving each of the following substances in water: ZnCl2, HNO3, (NH4)2SO4,Ca(OH)2
October 4, 2009

Economics
c x 0.20 = 15,000 c x (1/5) = 15,000 c = 15,000 x 5
October 4, 2009

math prime factorization
write the prime factorization of 15 using exponents.
September 28, 2009

MATH
PRIME FACTORIZATION OF 15 USING EXPONENTS
September 28, 2009

actually it is about computers
I tried to do the same thing and could not, I had to use windows movie maker instead, turned out great!
September 25, 2009

stats
3. For a particular sample of 50 scores on a psychology exam, the following results were obtained. Mean = 78 Mode = 84 Median = 80 Standard deviation = 11 1. What score was earned by more students than any other score? Why? 2. What is the variance?
September 17, 2009

Science
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
August 26, 2009

Mathematics
Umm...what?
August 14, 2009

Mathematics
Solve the following equation for x, where 0 </ x 2(pi). tan^2x=1
August 14, 2009

Systems (maths)
Determine the system which is equivalent to the system: 3x+4y=12 x-2y=9 a) 3x+4y=12 3x-6y=27 b) 3x+4y=12 2x-4y=18 c) 10y=-15 5x=30 d) Any of A,B or C
July 25, 2009

antigone
Is the forth question A or b?
July 2, 2009

English
Dona Stein's "Putting Mother By" the poem is on Ploughshares, but i can't post the link. I have to write an essay/commentary/analysis on the poem, and i was wondering if someone could check up on my first paragraph. I know it's all one big metaphor, about...
June 10, 2009

Math
An eagle is hunting a bird in flight. The eagle begins its descent from a height of 74m. The eagle reaches its prey at a height of 3m. This situation can be modelled using the formula: 74=3+6t. t represents the time in seconds, but i'm not sure what 6 represents.
May 10, 2009

Economics
Explain two possible causes of Recession in an Economy using an AD/AS Diagram.
April 29, 2009

social studies
Thank you so much!!!!!!!!
April 13, 2009

social studies
Ms.Sue Sorry i will type you another time i gota go.Thank you so much i know you only answered one question but i have it done.My older brother helped me and,i asked him earlier but he wouldnt help but since he wanted to get on the computer so bad.... laugh out loud!!! but ...
April 13, 2009

social studies
what do you meen?
April 13, 2009

social studies
PLEASE HELP!!!!!!!!
April 13, 2009

social studies
well ms.sue the book does mention calligraphy and landscapes and paintings sorry i may have missed that part
April 13, 2009

social studies
true or false:in this region learning is viewed as dangerous to society.the region is east asia and southeast asia please help!!!!
April 13, 2009

social studies
thank you and it says that craftspoeple in east asia and southeast asia are also skilled at weaving carving and making pottery and thats all i could find for that
April 13, 2009

social studies
please help me (emergency)
April 13, 2009

social studies
the chapter is about east asia and southeast asia
April 13, 2009

social studies
true or false:arts in the region include landscapes paintings calligraphy weaving carving and pottery making. PLEASE HELP ME!!!THIS PAPERS DUE TOMORRW AND I CANT FIND AN ANSWER
April 13, 2009

Biology
Is the plasma membrane permeable to glucose or starch?
March 24, 2009

spanish
diario mientra aunque abrazo adornos anteayer casarse tristeza siguiente sorpresa :)
March 17, 2009

spanish
help unscramble these words please. they are in spanish. ridaoi termain qaenuu ozarab ndoaros reatyane rescaas atirztse eisitngeu aposiser
March 17, 2009

Algebra 2
Are a of a sail. The area in square meters for a triangular sail is given by A(x) = x2 + 5x + 6. a) Find A (5). b) If the height of the sail is x +3 meters, then what is the length of the base of the sail?
February 22, 2009

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