Saturday

April 18, 2015

April 18, 2015

Total # Posts: 233

**mathematics **

what is the domain and range of the function F(x)= 1/1-2cosx
*September 22, 2012*

**mathematics **

what is the domain of the function f(x)= 1/root([x]^2-[x]-6)
*September 22, 2012*

**mathematics**

What is the domain of the functions f(x)= 1/root(x+|x|) f(x)= x|x|
*September 22, 2012*

**math**

Kate is saving to take an SAT Prep course that costs $350 and saved $180 and she adds $17 to her savings each week. How many more weeks must she save to be able to afford the course? Need the answer right now!
*September 21, 2012*

**physics**

what is the graph of potential energy and kinetic energy against distance?
*September 21, 2012*

**mathematics**

what is the square and square root of zero
*September 21, 2012*

**physics**

what is time paradox and time dillation?
*September 20, 2012*

**physics**

list the contact and non contact forces in mathematics. What is the cold welding?
*September 20, 2012*

**mathematics**

how many liters of water will have to be added to 1125 liters of 45% solution of acid so that the resulting mixture will contain more than 25% but less than 30% acid content.
*September 20, 2012*

**mathematics**

in triangle abc if acosA= bcosB then how to prove the triangle is isosceles or right angled
*September 20, 2012*

**mathematics**

what is the domain of the function f(x)=1/root[2x-3]
*September 20, 2012*

**mathematics**

the complex numbers 1,-1,iorta root3 form which type of triangle in graphical form
*September 20, 2012*

**mathematics**

write the number of points of intersection of 2y=1 and y= sinx. -2pi<_x<_2pi
*September 20, 2012*

**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*