Thursday
October 2, 2014

Posts by Maria


Total # Posts: 1,507

Science math
Can no one help me? I posted a question earlier I don't need answer I need to understand what I did wrong my thinking is that if I have a 2:1 ratio And my total is 99 that if I divide by 3 then I can get the amounts 33x2 is 66, then 33x1 is 33 so it would be 66:33. I used ...
October 18, 2012

Science-math
The equation for the decomposition of silver oxide is 2(Ag2)o yields 4Ag +o2. Set up ratio to calculate the number of oxygen molecules released when 1 gram of silver oxide is broken down. There are 2.6 x 10 to 21 power molecules in 1 gram of silver oxide. I know that it is a 2...
October 18, 2012

History
Compare the Iroquois form of government to that of the United State?
October 17, 2012

health
Resistance exercises improve muscular strength in person with such condition as A-Multiple sclerosis B- Cerebal palsy and spinal cord injuries C-Cognitive disability D-All above
October 17, 2012

chemistry ............chemistry
if you had to design a firework show for a Christmas celebration , what elements would you include in the fireworks ? why ? I knew u post answer for me , but i can't find it . May you answer for me? Thank you so much !!
October 15, 2012

chemistry ......chemistry
what does Planck mean when he states that energy in quantized? Ans: plank's theory proposes that the energies absorbed or emitted by atoms are quantized ,which means that their values are restricted to certain quantities. is this O.K?
October 15, 2012

chemistry ........................chemistry
thank you
October 15, 2012

chemistry ........................chemistry
Sodium Na+ Intense yellow Barium Ba++ Green Calcium Ca++ Brick red Copper Cu+ or Cu++ Blue-green Strontium Sr++ ? Lithium Li+ ? Sodium and potassium mixture Na+&K :yellow light Observations using the cobalt glass filter Sodium & potassium mixture Na+&K+:reddish color Potassium...
October 15, 2012

social studies
when many native americans died from a disease called smallpox?
October 14, 2012

chemistry ................chemistry
yes , i did . but i don't sure . thank you
October 14, 2012

chemistry ................chemistry
what is the color a mixture of sodium and potassium compounds?? What is the color a mixture of sodium and potassium compounds (use the cobalt glass)??
October 14, 2012

physical sicence
If a force gives a 2-kg object an acceleration of 1.6 m/s2, what acceleration does this same force give to an 8-kg object?
October 12, 2012

chemistry .............chemistry
what color emission would you see if you heated each solution to an extremely high temperature? why
October 12, 2012

chemistry.......chemistry
what color did your glass-stirring rod emit ? what does this indicate about your glass-stirring rod?
October 12, 2012

physics
If a force gives a 2-kg object an acceleration of 1.6 m/s2, what acceleration does this same force give to an 8-kg object?
October 12, 2012

chemistry .....chemistry
what element include in the fireworks power ? why
October 11, 2012

chemistry -------------chemistry
If a flame on the candle burns red , how does energy of that flame compare to that of the Bunsen burner flame ? and why ? ans:The Bunsen burner flame has higher temperature than candle’s flame . Because flame of candle emit red ,and red has the least energy in visible light.
October 11, 2012

chemistry ---------chemistry
What color did your glass -stirring rod emid ? what does this indicate about glass- strirring rod ? Ans: galss stirring rod emids orange . but i dont know the ans 2 .
October 11, 2012

chemistry ------------ chemistry -------
when you were heating milk on the stoven you accidentally spilled some milk on the burner . what color would you see ? why would you see that color? My answer : Intense yellow . because milk has sodium , sodium is intense yellow . is this right ?
October 11, 2012

chemistry ------ flame test-------------
thanks for your help
October 11, 2012

chemistry ------ flame test-------------
Did the nitrate ion effect the color emission of the solution ? how did you decide ? my answer: No , because The nitrate ion is the oxidizing agent in the compound without it you could not burn the chemicals and you could not produce a spectrum so there would be no emission ...
October 11, 2012

Maria
All of them
October 9, 2012

Science
Biphenyl, C12H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 15.2 g of biphenyl in 29.5 g of benzene?
October 9, 2012

Computer studies
Draw a flowchart for a program that will accepts 30 intergers and print the number of positive and negatives numbers and the sum of the positive number
October 7, 2012

physics
A spring has a length of 60cm when it unstretched. A load of 10N increases its length to 64 cm and a load of 20N increases its length to 68cm a)what extension is produced by the 20N load? b) What length would the spring have if a load of 15N were added to it? c) Determine the ...
October 5, 2012

history
One of today's hot political topics is some states' measures to restrict voting. What historical precedents do we have for such efforts, in the South and elsewhere? Why were/are some people concerned about this?
October 4, 2012

physical science
A Weather balloon carries instruments that measure temperature, pressure, and humidity as it rises through the atmosphere. Suppose such a balloon has a volume of 1.2 m3 at sea level where the pressure is 1 atm and the temperature is 20oC. When the balloon is at an altitude of ...
October 4, 2012

Physics
A loaded truck can accelerate at 4 m/s 2. It loses its load so that it is only 0.1 as massive. By what factor must the acceleration change for the same driving force?
October 1, 2012

Algebra 2
x=4? y=100? Is That Right?
October 1, 2012

Algebra 2
Explain what the notation f(4)=100 means? We could also say that when x=___, y=___?
October 1, 2012

Physics
A loaded truck can accelerate at 4 m/s 2. It loses its load so that it is only 0.1 as massive. By what factor must the acceleration change for the same driving force?
October 1, 2012

Physics
A loaded truck can accelerate at 4 m/s 2. It loses its load so that it is only 0.1 as massive. By what factor must the acceleration change for the same driving force?
October 1, 2012

chemistry ----------- chemistry
on the atomic level , how are physical changes and chemical changes different ?
October 1, 2012

Art
Idk because i feel like modern art in the 20th century, is realistic, with the nude statues, and paintings, and things looking like a photograph nowadays. U know what im saying?
September 30, 2012

Art
ok so for the first question on how art will change in the future, i said it will be more.. realistic. Do u think thats a good answer?
September 30, 2012

Art
can you help, what is this question answering? It says, based on the examples you have seen from the various time periods in history, try to uncover any trends and deduce the direction art style is heading.
September 30, 2012

Art
Where are art styles going to lead in the near future
September 30, 2012

childcare
Discuss the responsibilities that a teacher has to volunteer parents when these parents are invited to particpate in learning activities. Include five responsibilties and an examplae of each
September 29, 2012

physics
If a person who weighs 125lb, rides a roller coaster with a 100m diameter loop at 30m/s. What force did the person exert?
September 27, 2012

physics
A glacier moves with a speed of 45 nm/s. How many years would it take for the glacier to move 0.87 km? Assume there are 365 days in a year. Answer in units of y
September 27, 2012

Art
Yeah i keep reading and i see that when he went to Rome to study the ruins, that's what inspired his own unique style.
September 27, 2012

Art
It just says to name what style he used. Its not very discriptive. And im not sure if i have to put one set style.. or multiple.. Because i think he used Gothic and classical styles in his works.. but I know he also assisted in the creation of the Renaissance style.
September 27, 2012

Art
Im seeing different things, i also read Roman or Classical style
September 27, 2012

Art
geometric style?
September 27, 2012

Art
What was Filippo Brunelleschi's style that he used? Is it.. Italian Renaissance? Thank you.
September 27, 2012

Geo
what has been the most significant event that happen in the world?
September 26, 2012

chemitry--- physical & chemical change---
describe a physical change that appears to change chemically???
September 25, 2012

Pre-Ap Physics
To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9 ◦ from the horizontal. The ...
September 24, 2012

Pre-Ap Physics
To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9◦ from the horizontal. The ...
September 24, 2012

Pre-Ap Physics
A rock is projected from the edge of the top of a building with an initial velocity of 16.3 m/s at an angle of 39 ◦ above the horizontal. The rock strikes the ground a horizontal distance of 90 m from the base of the building. The acceleration of gravity is 9.8 m/s 2. ...
September 24, 2012

Pre-Ap Physics
During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 2.65 km/s at an initial inclination of 41.9◦ to the horizontal. The acceleration of gravity is 9.8 m/s 2 . How far away did the shell hit? Answer ...
September 24, 2012

Pre-Ap Physics
To win the game, a place kicker must kick a football from a point 17 m (18.5912 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 15 m/s at an angle of 58.9 ◦ from the horizontal. The ...
September 24, 2012

Pre-Ap Physics
During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 2.65 km/s at an initial inclination of 41.9◦ to the horizontal. The acceleration of gravity is 9.8 m/s 2 . How far away did the shell hit? Answer ...
September 24, 2012

history
how is plymouth settlers are different from the settlers at the Jamestown?
September 22, 2012

History
why does the pilgrims settlement of plymouth succeed?
September 22, 2012

history
what were some of the ways in which social darwinism or the idea of survival of the fittest shaped american thought in the past?
September 22, 2012

Art
What style did Filippo Brunelleschi use?
September 21, 2012

physical science
A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can the woman change the ...
September 21, 2012

Pre-Ap Physics
A rock is thrown upward at 51.1◦ with respect to the horizontal. As it rises, its vertical component of velocity 1. remains unchanged. 2. decreases. 3. increases. 4. Unable to determine.
September 21, 2012

Physics Pre-Ap
014 (part 1 of 2) You drop a stone from a position of rest. How far will it fall vertically in the first 2 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 015 (part 2 of 2) If you instead toss it horizontally at 2.7 m/s, how far will it fall vertically...
September 21, 2012

physical scienece
Does every moving body possess kinetic energy? Does every stationary body possess potential energy?
September 21, 2012

physical sciencei
ke=1/2 (mass)(velocity) ke=1/2mv^2 ke= 1/2m(10^2-0^2) ke=1/2m(20^2-10^2) ke=1/2m(100) ke=1/2m(400-100) ratio is 300/100 or 3/1
September 19, 2012

chemistry -- radioactive decay
suppose you have a 150 gram sample of radioactive decay god-191 which has a half- life of 3.4 hours. how many grams of gold will ramain after 10hrs ? after 24 hrs? answer : 10 hrs :10/3.4= 2.94 times 150*(1/2)^2.94 = 18.75 grams 24 hrs: 24/3.4 = 7.06 150*(1/2)^7.06= 1.12 right...
September 18, 2012

Chemistry - radioactive decay .
list 2 reason why this isotope of gold- 191 would not be a good substitute for making jewelry?
September 18, 2012

Pre-Ap Algebra 2
if the graph of the equation 3x+by=2 is perpendicular to the graph of 2x-3y=-4 determine the value of b
September 18, 2012

History
I don't have a history book!
September 17, 2012

History
How did Pilgrims live? Who were the Purtains?
September 17, 2012

History
What type of settlement did the Pilgrims build?
September 17, 2012

History
What did the Mayflower passengers create when they wrote "civil body politick"?
September 17, 2012

History
How did the Mayflower Compact create representative government?
September 17, 2012

physics
A passenger on a moving train tosses a coin with an initial velocity of (-2.25 m/s) + 4.68 m/s) (from the point of view of the passenger). The train's velocity relative to the ground is (11.5 m/s). (a) What is the minimum speed of the coin relative to the ground during its...
September 16, 2012

math
1,000,200; 1,000,300 each time add 100
September 16, 2012

US history
Thank you so much!!!!
September 15, 2012

US history
What were the essential elements of the settlement of Jamestown that allowed it to survive?
September 15, 2012

Physical science
If you put a 9th grade student in a bathtub and he foisted with most of his head and upper chest above water, how much water would spill out? Additional Information: Bathtub was full of the brim Student is male, and has a normal male IQ (85) Student weights 80kg Student has a ...
September 15, 2012

Physical science
And yes, would you please explain Thanks
September 15, 2012

Physical science
Will a ship loaded with beach balls weight more, less, or the same, as the ship empty?
September 15, 2012

physical sicence
how fast must a ball be thrown upward to reach a height of 12 m?
September 14, 2012

physical science
The 200.g head of a golf club moves at 40 m/s in a circular ARC of 1.2 m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? Ignore the mass of the club's shaft.
September 14, 2012

Math
What is the rule for: Domain: 1, 3, 5, 7 Range: 1, 2, 3, 4 Thanks!
September 13, 2012

Chemistry --- chemistry ---
what is the difference between an atom and an ion ???
September 13, 2012

history
Which of the following is true of President G. W. Bush? A. He vowed to punish all countries sponsoring terrorism. B. He rejected unilateralism. C. He accepted the United States' role in the International Criminal Court. D. He reluctantly endorsed the Kyoto Protocol.
September 13, 2012

hate school
I don't even care
September 12, 2012

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
September 12, 2012

statistics
What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
September 12, 2012

chemistry ( chemistry lab)
-'Gasoline engine' what are the waste products form this engine ? what element must gasoline be composed of ? -'fuel cell'what are the waste products from this cell ? what is the fuel used in the fuel cell? MY ANSWERs : - C02 , h20 and heat energy are waste ...
September 10, 2012

chemistry ---chenistry ---
If it is assumed that a candle reacts with O2 ,in the air and the only products are energy , CO2 ,H20 ,what 2 elements must be present int he composition of the candle wax???
September 10, 2012

History
Who were the first sea explorers? Why did they explore the oceans? What resulted from their exploration? What did their exploration teach us about the world? What were the result of columbian Exchange?
September 10, 2012

History Christopher Columbus
Thank you Can please answer my other history question!
September 10, 2012

History Christopher Columbus
How did people first come to the Americas?
September 10, 2012

Math
29 I think... based on the order of operations.
September 10, 2012

physics
A popular entertainment at some carnivals is the blanket toss. (a) If a person is thrown to a maximum height of 26.0 ft above the blanket, how long does she spend in the air? (b) Is the amount of time the person is below a height of 13.0 ft more than, less than, or equal to ...
September 10, 2012

chemistry (lab)
how or where does the hat energy produced by the candle come from ?? help me!
September 10, 2012

History
Ok, thank you for answering my other history question :)
September 9, 2012

History
What are the new understanding of the population of the Americas before Eropian contact?
September 9, 2012

History
Thank you Can you please answer my other history question Please.....!!!!!
September 9, 2012

History
What are three ways in which the Americas might have been populated?
September 9, 2012

History
Thank you so much
September 9, 2012

History
How did geography of North America help or hinder our nation's development?
September 9, 2012

Algebra
If m angle BGC =16x-4 and m angle CGD = 2x+13,Find the value of x so that angle BGD is a right angle.
September 9, 2012

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