Sunday
November 23, 2014

Posts by Edward


Total # Posts: 219

mathematics
what is the maximum value of sinthetacostheta?
September 20, 2012

chemistry
what is the bond order of n2 positive, n2neagative, n2 2neagative?
September 20, 2012

Math
how do you find m in the equation: (two fifths) m equals 6 2/5 m = 6
September 17, 2012

fluid power
assume that the input piston has an area of 4.25 inches squared with a force of 3150 pounds what is the pressure in the system
September 13, 2012

statistics
4. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead, you need to use the Z distribution table in ...
September 3, 2012

sciences
from where does salt come in the sea.
August 11, 2012

home chemistry
if we grind some sugar and in this ground sugar, we add some salt in it then it will become a mixture of sugar and salt. so how can we separate sugar and salt.
August 11, 2012

physics
A 20 g bullet moving horizontally with a speed v hits a 2-kg block of wood resting on a table. After hitting the block the bullet is embedded in the block of wood and the block and the bullet moves a distance of 40 cm before it stops. If the coefficient of friction between the...
July 23, 2012

physics
i have given an assignment by school to prapare a working model of physics. Please give me some tips.
July 20, 2012

sciences
i want to become amember of young scientist association in my school. But for this i must give an idea of any science project . Please help me
July 18, 2012

physics
how many RPM are required to attain 1g with a radius of 840 feet
July 11, 2012

maths
if a bowling green is 1350meters square and the chemical is 0.4 litres a hectare how much do you put on
June 29, 2012

physics
a stone is dropped from arising balloon at a height of 76m above the ground and reaches the ground in 6 seconds. Caculate the velocity of ballon when the stone was dropped?
June 26, 2012

physics
a gun is fired from a distance of 1:2 km from a hill. The echo of sound is heard after 7:1seconds at same place. Calculate the velocity of bullet fired.
June 26, 2012

physics
find the area of parallelogram whose adjacent sides are +3+3 and -3-2+.
June 26, 2012

drawing
please give me some important tips about decoration of a science chart based on 'tiger in trouble.'
June 21, 2012

chemistry
please explain clearly. I just didn't understand the question.
June 21, 2012

drawing
i have to put a topic 'tiger in trouble'. Please help earliar
June 20, 2012

drawing
please give me some important tips about decoration of a science chart.
June 20, 2012

earth
thank you very much.
June 20, 2012

earth
please give me some important tips about a topic 'tiger in trouble'. I have to prepare a chart on this.
June 20, 2012

chinese
translate these sentences-: 1 i am not free. 2 good bye i'll see you later. 3 hello how are you? 4 don't disturb me, let me study. 5 may you please give me this book.
June 17, 2012

spanish
please translate these sentences into spanish-: 1.how are you? 2don't disturb me? 3.i want to drink something. 4.oh, i got it. 5. I want to do my work. 6.please be quite.
June 17, 2012

french
i want to learn this language. Please write some french sentences and also translate them into english. Please earlier, its very urgent.
June 17, 2012

physics
a gun is fired from a distance of 1.2 km from a hill.the echo of the sound is heard after 7.1 seconds at the same place. Calculate the velocity of sound.
June 17, 2012

non-medical
a drop of oil of radius 0-20mm spreads on a circular film of diameter 20mm on the water surface. Estimate the size of molecule.
June 11, 2012

non-medical
a particle with velocity u is moving with uniform accelration a. Distance moved by particle in the nth second is given by s= ut+a)2t-1. What are the dimensions of s?
June 11, 2012

non-medical
a gun is fired from a distance of 1.2 km from a hill. The echo of sound is heard at same place after 7.1 seconds what is velocity of sound?
June 11, 2012

Physics
it wouldn't slow the car down at all its redundet there just isn't enough pressure behind the fly to stop the car or to slow it down it would kill the fly and make a speck of guts on the windshield
June 6, 2012

Geometry
solve A Flag Pole Has A Height Of 16 Yards. It Will Be Supported By Three Cables, Each Of Which Is Attached To The Flagpole At A Point 4 Yards Below The Top Of The Pole And Attached To The Ground At A Pole. Find the total number of feet of cable that will be required
March 5, 2012

Chemistry-Stoichiometry
A 1.146g mixture of the solid salts NaS)4 and PB(NO3)2 forms an aqueous solution with the precipitation of PbSO4. How would I write the molecular form of the equation for the reaction?
March 1, 2012

math
18mm 9mm whats the base its a trapazoid
February 28, 2012

math
9 1/4 miles walked
February 24, 2012

science
In 91% (by volume) isopropyl alcohol (a large [compared to water], flammable molecule) solution, there are only two substances: the alcohol, and water. So when I poured 50 mL of 91% isopropyl alcohol into a graduated cylinder, how many milliliters were alcohol? How many were ...
February 6, 2012

statistics
Decide whether the experiment is a binomial, Poisson, or neither based on the information given. Each week a man plays a game in which he has a 21% chance of winning. The random variable is the number of times he wins in 64 weeks.
February 4, 2012

algebra
There is a process to this and it's why I am asking for help.
December 20, 2011

algebra
List all possible rational zeros for the polynomial below. Find all real zeros and factor completely. Please show all your work. f(x) = 2x^4 + 19x^3 + 37x^2 - 55x - 75
December 20, 2011

probability
Find the probability that an insurance company will receive more than one warranty claim per day for at least eight of the next 10 days.
November 7, 2011

statistics
Anne, Joe and Lynn, in this order, will take turns to draw two cards from a standard deck of 52 cards. Note that each draw of 2 cards is w/o replacement but draws of different turns are with replacement (the preceding two cards will be put back and the deck will be reshuffled...
November 7, 2011

finance
IBM issued $1,000 30 year bonds. The bonds sold for $936 and pay interest semi-annually. The required rate of return is 7%. wha tis the semiannual interest payment on the bonds?
October 30, 2011

Finance
Can you show how to solve 1.8667 = (1+r)^5
October 27, 2011

physics
A mass M can slide with negligible friction inside a tube bent in a circle of radius R = 1.45 m. The tube rotates about its diameter; the mass is in equilibrium at ¦È = 47.3¡ã. Calculate the number of revolutions the hoop makes in 115 s.
October 7, 2011

6th gr,ade math
there are 5 boys in a class of 20 students, what percent are boys?
August 22, 2011

Government
Yeah it is B because the president can deploy the armed forces for sixity days and following that congress must approve the deployment of the troops.
July 19, 2011

physics
A race car is able to accelerate at a rate of 14m/s2. After exiting a turn at a speed of 15m/s, the car enters a straightaway and accelerates to a speed of 96m/s just as it reaches the end of the straightaway and enters the next turn. A)how long did it take the car to ...
July 18, 2011

physics
a bus is driving through traffic as it makes a number of express stops. the bus drives at a speed of 10 m/s2 for 90 seconds then drives at a speed of 15m/s for 120 seconds before stopping for 30 seconds, then drives at a speed of 5m/s for 60 seconds before stopping for 15 ...
July 18, 2011

Physics
A 10 kg block is pushed across a rough surface by a 25N force the block moves at a constant velocity when this force is applied. A) determine the magnitude of the friction force acting on the block B) What is the coefficient of friction between the surface and the block
July 18, 2011

Physics
A spring scale has a spring coefficient of 400 n/m. Determine the mass of an object if it causes the scale's platform to sink .08m.
July 18, 2011

Physics
A 1200 kg car accelerates to the right at 7m/s2 along a special frictionless track. Determine the magnitude and direction of the force the engine exerts to accelerate the car? A wind blows heavy winds into the car's path.As a result the car's acceleration slows to 4.5m...
July 18, 2011

Physics
15kg block rests on a rough surface (u=.35) a 100N force to the left is applied to the block. what is the magnitude and direction of the net force acting on the block? How quickly will the block accelerate over the rough surface?
July 18, 2011

Physics
two forces act concurrently on a 5kg block resting on a smooth horizontal surface a 5N force making a 40degree angle with the surface and a 10n making a 20degree angle with the surface. A) Determine the magnitude and direction of the net force acting on a box.
July 18, 2011

physics
A man in manhattan is told that his destination is 26 blocks east at 30 degree angle uptown from where he stood on houston street determine how many blocks east and how many blocks uptown from where he stood.
July 18, 2011

physical science
If the earth had twice its present radius and twice its present mass, what would happen to your weight? Explain. What is the relationship between the radius (R) of orbit of a satellite and its period (T)?
July 14, 2011

physics
Advertisements for A toy balk once stated that it would rebound to a height greater than the hethe height from which it was dropped. Is this possible?
July 14, 2011

english
can you check my * answer *Edit the following sentences to correct misplaced or awkwardly placed modifiers. 2. Most lions at night hunt for med- size prey, such as zebra. (revised) Lions at night hunt for med-size prey, such as zebra. 3. Several recent studies have encouraged ...
June 29, 2011

english
Edit the following sentences to correct misplaced or awkwardly placed modifiers. 1. The flood nearly displaced half of the city’s residents, who packed into several overcrowded shelters. *The city's flood displaced half of the residents, who packed into several ...
June 29, 2011

physics
if a 5microfarad capacitor is charged by a 20volts battery and it is then connected across an uncharged 20microfarad capacitor , find the potential energy
June 28, 2011

6th grade math
on a map an inch represents 200 miles how far is 3 1/4 inches?
June 27, 2011

physics
The planet mars has a mass of 6042e23 kg and a radius of 3038e6 m. how much would a 60 kg person weigh on Mars compared to their weight on Earth? How heavy he would feel he weighed in kg on Mars?
June 23, 2011

Physics
example that show the # part of distance and the # part of displacement can be the same for the same motion
June 21, 2011

Physics
example that show the # part of distance and the # part of displacement can be different for the same motion
June 21, 2011

Chemistry
The Answer is c: Ag(s)
April 17, 2011

physics
A force of 80.0 N is required to pull a 25.0 kg wooden toy boat at a constant velocity across a smooth glass surface on Earth. What force would be required to pull the same wooden toy boat across the same glass surface on the planet Jupiter?
March 23, 2011

science
Why you think scientists probably want to leave what they do open to revision?
March 19, 2011

Dynamic Decision
Discuss chaos in health care systems today. In addition, discuss the role of insurance and billing, HMOs, varying drug costs across borders, availability of doctors and nurses, and hospital management complexities. Be sure to support your analyses with excellent supporting ...
March 18, 2011

math-163
f(x)=1/2^4(x^2-5)(X+1)
March 1, 2011

algebra
9 1/4
February 16, 2011

chemestry
show a correct numerical setup for determining how many litters of a 1.2M solution can be prepared with a .50 mole of c6h12o6
January 19, 2011

english
can somone help me compare and contrast twilight and beowolf? (the characters etc)
January 13, 2011

physics
A circular coil of 30 turns and radius 7 cm is placed with its plane oriented at 90 degrees to a magnetic field of 0.1 T. the fieldis now increased at a steady rate, reaching a value of 0.7 T after 5 seconds. when emf is induced in the coil
November 24, 2010

physics
A 2.0 m wire segment carrying a current of 0.60 A oriented parallel to a uniform magnetic field of 0.50 T experiences a force of what magnitude
November 24, 2010

7th grade social studies.
I need info on life on the early middle ages to write a short story or poem
November 10, 2010

World History
Some of my points are : lives of the ancient people being horrible and treacherous because of the geographical features of their region, regardless they took advantage of these features and settled near rivers, lakes, or mountains.
October 28, 2010

World History
Can you write a thesis and introduction paragraph for this question/statement: Discuss how the lives of the peoples of the ancient world were shaped by the geography of their region. Thanks A lot :)
October 28, 2010

world history
What is the realtionship between Reformation and European dominance in world markets?
September 27, 2010

Chemistry AP-Density
21.38011111
August 26, 2010

Chemistry
How much heat is required to melt 75.5g of ice at -25 degrees Celcius, and convert it to steam at 105 Celcius
July 31, 2010

english
We designed the pages to fit in three, five, and seven-ring binders. is this correct punctuation?
July 28, 2010

Statistics
If a completion time for a task is normally distributed with a mean of 15 seconds and a standard deviation of 2.5 seconds, what is the probability of getting a time less than 9.7 seconds?
July 25, 2010

Statistics
132.8460441 Provided your 554 is correct.
July 25, 2010

chemistry
A volume of 35.0 mL of nitrogen gas was collected over water at 24 degrees C and 99.1kPa. The vapor pressure of water at this temperature is 2.99 kPa. What is the pressure of the nitrogen gas alone?
June 14, 2010

Writing
Part III: Revision In this section of the final, revise the sentences provided to correct the grammar errors indicated. (In many cases there will be more than one correct alternative to the sentence provided; credit will be given for all correct answers.) Revise the following ...
May 28, 2010

Physics
A mixture of gasoline vapor and air is placed in an engine cylinder. The piston has an area of 7.4 x 10^-3 m^2 and is displaced inward by 7.2 x 10^-2 m. If 9.5 x 10^5 Pa of pressure is placed on the piston, how much work is done during this process? Is work being done on or by...
March 29, 2010

Physics
In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks are rubbed together to...
March 29, 2010

Math
Solve. a+3 less than -12
March 21, 2010

math
Freddie Fast can make 6 4/5 chairs per hour on a furniture assembly line. Warren Weary makes 4 1/2 chairs per hour. In a 10-hour shift, how many more chairs does freddie make than warren? and if i may i would also like a small explanatation please i just done get it and thank ...
March 12, 2010

phyics
.65496475
February 28, 2010

Science
How can I make a 3-d model of the plant and animal cells(Clearly Labeled). Also I can't use food or clay also clay-dough. Plz help
February 6, 2010

social st.
i wrote this why is it good or not what more does it need
January 31, 2010

social st.
is this a 6 grade work There is and another part of Indian Culture which is Indian Arts The main theme of Indian art seem to begin emerging as early as the Harappan period, about 2500 BC. Although we're still not sure, some Harappan images look like later images of Vishnu...
January 31, 2010

Ela
could you give me an conclusion and introduction for ancient india clothing and art plz!!!!! plzplzplzplz!!!!!!!
January 31, 2010

Science
Engineering Science Project ideas and some thing cool interesting and new not that has been popular as a science project!!!!!!!!!!!!! Plz!!!!!!!!!!!!!!
January 24, 2010

Algebra 1
hey
December 12, 2009

chemistry
The reaction between 0.0272 g of Mg with an excess of water was carried out in an ice calorimeter. The volume of water decreased by 0.19 mL during the reaction. a) Write the equation that occurs. Is it a redox? b) Calculate the enthalpy of reaction? i have no clue how to ...
November 15, 2009

chemistry
please do not post questions that involve quiz questions from mc master univeristy
November 8, 2009

chemistry
The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH-(aq)? Mn(OH)2(s) + MnO4-(aq) = MnO42-(aq). 1. ) 2 2. ) 3 3. ) 4 4. ) 6 5. ) 8 the answer i got was 6...but im no 100% sure :S
November 8, 2009

ALGEBRA
If a car is traveling at 24 meters per second, at how many kilometers per is it traveling?
September 17, 2009

Government.
The levl of the nation's debt is: A. Limited by the constitution. B. Always limited by Congress. C. Is not limited by any goverment branch. D. Is not to exceed 10 billion. I know it's not A because my books says that there are no Constitutional limits. I know it's ...
April 8, 2009

physics
points A {at(2,3)m} and B {at(5,7)m} are in a region where the electric field is uniform and given by vector E=(4i+3j) N/C. What is the potential difference Va-Vb in volts? a. 23 b. 27 c. 30 d. 24 e. 11 i think the formula may be ds=dxi+dyi but even with that im not sure how ...
April 6, 2009

Math Algebra
I’m working on factoring trinomials of the form ax2 + bx + c & perfect square trinomials. This chapter explains that a further method will be needed to conduct a trial and check process, in which the middle term is the sum of the products. Here’s the problem as ...
April 1, 2009

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