Monday

February 8, 2016
Total # Posts: 641

**physics 213**

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 44.7 km/s and 56.2 km/s. The slower planet's orbital period is 8.61 years. (a) What is the mass of the star? (b) What ...
*February 19, 2012*

**math 12**

The world's population is 1970 was about 3.6 billion. If the population has increased at 2% each year since then, what will the world's population be in 2010?
*February 14, 2012*

**physics 213**

A duck has a mass of 2.80 kg. As the duck paddles, a force of 0.120 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.190 N in a direction of 48.0 ° south of east. When these forces begin to act, the velocity of the duck is 0....
*February 3, 2012*

**physics **

During a circus performance, a 74.8-kg human cannonball is shot out of a 18.0-m-long cannon. If the human cannonball spends 0.844 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.
*February 1, 2012*

**Pre-Algebra**

Help! I am not really good with story problems! Forest rangers measure a depth of 82" of snow on a mountain peak at 8am. Snow is expected to fall at a steady rate of 3/4" per hour throughout the day. A) write an equation that approximates the depth of 'y' of ...
*January 30, 2012*

**physics **

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 35.0 m/s at an angle of 33.7 ° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is ...
*January 26, 2012*

**Physics **

Relative to the ground, a car has a velocity of 14.8 m/s, directed due north. Relative to this car, a truck has a velocity of 24.0 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
*January 26, 2012*

**Math**

What is the range of y= -(x-2)^2+2 ?
*December 31, 2011*

**english**

What do you know about the fact? I have to write a research paper about Genocide. It must have a body and conclusion
*December 19, 2011*

**math**

16b to the 8th power + 40b to the 7th power + 25b to the 6th power
*December 14, 2011*

**science**

Why are proteins necessary in your body? What are polymers that build up to make proteins?
*December 9, 2011*

**Algebra 2**

How would you graphy this question and also solve for the intercepts: y=2(x-3)^2-1
*December 2, 2011*

**science-biology**

it is a recessive gene
*December 2, 2011*

**Physics 12**

An alpha particle is accelerated by a voltage of 1.53*10^3 V and is then deflected by a magnetic field of strength 0.020 T into a circular path of radius 0.40 m. If the alpha particles have a charge of 3.2*10^-19 C, what is their mass?
*December 1, 2011*

**chemistry**

how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?
*November 29, 2011*

**biotech**

how would you prepare 300 ml of a 10% CaCl2 solution (w/w)?
*November 29, 2011*

**Calculus**

That is wrong^ av=11-2/3= 9/3=3
*November 13, 2011*

**college math**

use long division 1.2x3+3x2-17x+1 /x-2 2.y3+3y2+1 /y-2 3.n5-n2 /n2-n
*November 11, 2011*

**7th Math**

add 12 16 and 18. then find the LCD of 3/4 and 1/2. the LCD would be 4. hope this helps!
*October 27, 2011*

**Math :(**

jerome and tyler meet in the local pizza parlor after their saturday afternoon soccer game. Eash boy bought a separete pizza with an agreement to share with each other, both at the restraunt and in what they would each take home. jerome ate 1/4 of a pizza and Tyler at 2/3 of a...
*October 27, 2011*

**English **

Lord of the Flies Question Describe how the boys have fun as explorers. (p. 25-26) Who becomes the chief and how is this determined?
*October 25, 2011*

**English **

Lord of the Flies Questions 3.)What does Piggy believe has happened back home in England? 4.What does Piggy want to do now that they're on the island? 7.What happened when the conch was blown? (p. 17)
*October 25, 2011*

**Spanish**

The problem is: Que talla usar/usara/usaro Pedro? Does usar get affected by the subject or any ol noun?
*October 23, 2011*

**Physics**

Physics Help... Applying Newtons Laws Grade 11? On the surface of the earth a geological hammer has a mass of 1500g. Determine its mass and weight on Mars where g=3.6 m/s^2.
*October 22, 2011*

**Physics**

A 10 m long frictionless ramp is inclined at an angle of 30 degress to the horizontal. A boy of mass 57 kg coasts down the incline on a skateboard of mass 3.0 kg. The acceleration due to gravity may be taken as 9.8 m/s^2 and the effects of air resistance can be ignored. a) ...
*October 22, 2011*

**Science**

In drosophila , short wings , and black colour are reccessive traits.long wings and grey colour are dominant. show the cross results between a short winged , heterozygous grey fly and a heterzygous long winged grey fly
*October 17, 2011*

**Math( help please ! )**

determine the maximum or the minimum of a)2x^2+12x
*October 17, 2011*

**Math( help please ! )**

The profit p(x) of a cosmetics company , in thousands of dollars . is given by p(x) =-5t^2=400x-2550, where x is the amount spent on advertising in thousands of dollars a) determine the maximum profit the company can make b) dtermine the amount spent on advertising that will ...
*October 17, 2011*

**Math( help please ! )**

The height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2=20t=50, where h(t) is the ball's height above the gorund,in meters, at time t seconds after the throw a) determine the maximum height of the ball b) how long does it take for the ball to...
*October 17, 2011*

**geometry**

Suppose the parallelogram shown has angles defined by the following expressions: angle A = 6x + 19; angle B = 3x - 21; angle C = 6x + 19; and angle D = 3x - 21? What is the measure of the largest angle?
*October 16, 2011*

**Art Appreciation**

ok thank you
*October 16, 2011*

**Art Appreciation**

I do not understand it.
*October 16, 2011*

**Art Appreciation**

Visit the following Web sites and explore the collections of Ancient Art there: The Metropolitan Museum of Art The Louvre Museum The Smithsonian Institution Freer Gallery and Sackler Gallery See the Course Materials List for access to these sites. From the gallery Web sites ...
*October 16, 2011*

**geometry**

Suppose the parallelogram shown has angles defined by the following expressions: angle A = 6x + 19; angle B = 3x - 21; angle C = 6x + 19; and angle D = 3x - 21? What is the measure of the largest angle?
*October 16, 2011*

**chemistry**

A student found that there are 115 drops of glacial acetic acid in 2.00 mL. Calculate the number of drops of glacial acetic acid, HC2H3O2 required to make 225 mL of 0.1 M acetic acid solution
*October 16, 2011*

**Math( please help)**

determine the maximum or the minimum value for each a)y=2x^2+12 b)y=-3x^2-12x+15 c)3x(x-2)+5
*October 16, 2011*

**Biology( HELP PLEASE)**

give the two possible alleles in the eggs produced by a women whose genotype is JjKkLl
*October 14, 2011*

**Math ( any help would be great!)**

Thankss !!
*October 13, 2011*

**Math ( any help would be great!)**

a ball is kicked in the air from the top of a cliff , the path that the ball travels is given by the equation h(t)=-5t^2+17t+22, where h(t) is the height given in meters and t is the time seconds. a) how high is the cliff ? b)what is the maximum height the ball reaches ? c)...
*October 13, 2011*

**Physics**

two students are attempting to lift a sign to the top of a tall building, each is pulling equally with 100 newtons of force, on the two ropes. The ropes are attached to opposit corners of the sign, and the angle between them is 60. compute the resultant force.
*October 13, 2011*

**ALGEBRA 1 HONORS**

im suppose to find the slope and y-intercept.
*October 11, 2011*

**ALGEBRA 1 HONORS**

whats the answer to x+4=4y
*October 11, 2011*

**Physics**

A passenger walks from one side of a ferry to the other as it approaches a dock. If the passenger's velocity is 1.50 m/s due north relative to the ferry, and 4.50 m/s at an angle of 30.0* west of north relative to the water, what are the direction and magnitude of the ...
*October 2, 2011*

**physics**

There are two blocks connected by a string and tied to a wall on an incline. The mass of the lower block is 1.0kg; the mass of the upper block is 2.0kg. Given that the angle of the incline is 31*, find the tension in (a) the string connecting the two blocks and (b) the string ...
*October 2, 2011*

**physics**

As you hurry to catch your flight at the airport, you encounter a moving walkway that is 85m long and has a speed of 2.2 m/s relative to the ground. If it takes you 68s to cover 85m when walking on the ground, how long will it take you to cover the same distance on the walkway...
*October 2, 2011*

**Physics**

You shoot an arrow into the air. 2.oo seconds later the arrow has gone straight upward to a height of 30 meters above its launch point. (a) What was the arrow's initial speed? (b) How long did it take for the arrow to first reach a height of 15 meters above it's launch...
*October 1, 2011*

**physics**

An Astronaut on the Moon drops a rock straight downward from a height of 1.25 meters. If the acceleration of gravity on the Moon is 1.62 meters per second squared, what is the speed of the rock just before it lands?
*October 1, 2011*

**college math**

please help me write the equation and solve for it. 1).in a basketball game, eric made half as many free throws as dan. if the total number of free throws made by both men was 18, how many free theows did eric make?
*September 27, 2011*

**Science 6th grade**

how can granite and slate peices be held together?
*September 22, 2011*

**6th grade social studies **

no im in 6th writeacher u r rong. i just got done w/ that i will help u in a minute
*September 22, 2011*

**physics**

A helicopter is rising at 5 m/s when a bag is dropped. After 2 seconds what is the bag's velocity? what is the bag's position? and how far below the helicopter is the bag?
*September 21, 2011*

**college math**

write the decimal as a fraction or a mixed number. write your answer in simplest form. .3282 so far i got this, 3282/100,000 then simplified to 1641/50,000
*September 9, 2011*

**Physics**

what is the volume of an object whos density is 2.2 g/cm^3 and has a mass of 50 g?
*September 5, 2011*

**physics**

A car moving with a constant acceleration covers the distance between two points 80 m apart in 8.0 s. Its velocity as it passes the second point is 14 m/s. (a) What was the speed at the first point? 1 m/s (b) What is the constant acceleration? 2 m/s2 (c) How far behind the ...
*September 2, 2011*

**Mathematics**

"Write the unit rate as a fraction" "25 feet per second" How do you solve this?
*August 29, 2011*

**anatomy**

Voluntary actions are controlled within the _________ of the frontal lobe
*July 26, 2011*

**Algebra**

Determine the approximate maximum distance y=-0.01x2 +0.7x+6.1
*June 20, 2011*

**math**

Write a linear function that satisfies the given conditions: f(0)=12, F(3)= -2
*May 22, 2011*

**Math**

Write an equation of the line that is perpendicular to the line y=2x-1 and passes throgh the point (0,-3)
*May 22, 2011*

**Algebra**

How do i simplify this? [(3x+1)/(x-2)] + [(2x-1)/(x-2)]
*May 22, 2011*

**Life orientation(Reaseach)**

I have a human rights poster to complete and i need help.
*May 21, 2011*

**geometry**

the area of a trapezoid is 108 square inches and one of its bases has a length of 8 inches. If the height of the trapezoid is 1.5 feet,f ind the length of the other base in inches.
*May 11, 2011*

**physics**

A shiny metallic Christmas ball ornament 5.10 cm in diameter is used as a mirror. What is the mirror's focal length? please answer in cm. thanks.
*May 7, 2011*

**Math**

I really need a math dictionary... I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord ...
*May 3, 2011*

**Math**

But when i search a word I didn't understand what it meant. Can anyone help me find a GOOD math dictionary?
*May 3, 2011*

**Math**

Thanks Ms.Sue!! It has been a LONG time since I posted!!
*May 3, 2011*

**Math**

I need the following definitions Please: point line intersecting lines parallel lines vertical lines horizontal lines acute angle obtuse angle right angle square rectangle trapezoid rhombus pentagon hexagon octagon triangle circle chord radius diameter cube rectangular prism ...
*May 3, 2011*

**science**

What mass of water, in grams, would have to be decomposed to produce 26.3 L of molecular oxygen at STP?
*May 3, 2011*

**physics**

Two children are having a splashing competition using a diving board. The first child is very small and jumps lightly off the end of the diving board. The second child, who is much larger, jumps heavily off the board. A. In what way or ways, if any, are the vibrations of the ...
*April 28, 2011*

**Geology**

The Love of Christ
*April 20, 2011*

**Language Arts**

Well actually, why wouldn't there be a comma after the yes? Why is there one after squeaky?
*April 13, 2011*

**Language Arts**

thanks!
*April 13, 2011*

**Language Arts**

In this sentence: I held it back and managed a squeaky "yes" in response. How would you correctly punctuate the yes part?
*April 13, 2011*

**chemistry**

Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10–20, in 0.52 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ⇌ Cu(NH3)42+, K = 5.0 × 1013 What does he mean by the complexation reaction??? So confused, please help!!!
*April 4, 2011*

**Math**

Solving quadratic equations by graphing? 3. x2-4x + 6 = 0 4. x2-4x-1=0 5. 4x2-12x + 3 = 0 6. x2-2x-4=0
*February 27, 2011*

**Reading**

The Great Gatsby Movie Discussion Questions? Compare and contrast Gatsby's social class with that of Tom and Daisy Buchanan. How does geography contribute to the definintion of social class in The Great Gatsby? What part of his past is Gatsby trying to recapture? Is he ...
*February 27, 2011*

**AP World History**

You're right, I can easily rewrite a fairly similar essay. Thank you for your help!
*February 27, 2011*

**AP World History**

Comparing the four Classical Societies, in essay format, of China (Han & Qin), India (Gupta empire) and Rome and Greece. I really need a good essay because I lost mine the day it was due and now it's late.
*February 27, 2011*

**Pre-Algebra**

Thank you so much! It makes sense now!
*February 16, 2011*

**Pre-Algebra**

I need help with scales, please! Q: You are making a scale drawing of a room using a scale of 1-inch:4-feet. a) The room is 14 feet by 18 feet. Find its dimensions in the drawing. b) A sofa in the room has a lenght of 6 feet. Find the length of the sofa in the drawing. Thank ...
*February 16, 2011*

**geometry honors**

if the volume of the pyramid is 64 feet cubed and the height is 16 feet what is the area of the base measured in square inches?
*February 9, 2011*

**World History **

Why was Egypt important to Europeans in the nineteeth century? Great Britain was determined to have complete control of the Suez Canal. Why? How did European lead to the Boer War? How did the French system of colonial rule differ from that of Great Britain? Why were many ...
*February 8, 2011*

**English**

Thank you for your help.
*February 7, 2011*

**English**

it means anger, and hatred. hatred for the cat?
*February 7, 2011*

**English**

Need help with symbolism project. thank you for your help.? I need help with explaining symbolism of the axe from Black Cat. Do you know what symbolism mean is? THANK YOU FOR YOUR HELP am i right? Did the narrator kill his wife's brain with a axe? what is the symbol of the...
*February 7, 2011*

**Maths**

Two polygons have te number of their sides in the ratio 1:3.The sums of their interior angles are in the ratio of 4;1. Find the number of sides of each polygon.
*February 7, 2011*

**English**

Need help with symbolism project. thank you for your help.? I need help with explaining symbolism of the ax from black cat. Do you know what symbolism mean is? THANK YOU FOR YOUR HELP example: etc
*February 6, 2011*

**literature**

The narrator killed his wife in her brain with the axe? am i right?
*February 6, 2011*

**literature**

please answer the question. i need help.
*February 6, 2011*

**literature**

killed Pluto? i dont know the ax symbolizes. You need to explain what ax symbolizes from The Black Cat.
*February 6, 2011*

**literature**

Need help with symbolism project. thank you for your help.? I need help with explaining symbolism of the ax from Black Cat. Do you know what symbolism mean is? THANK YOU FOR YOUR HELP
*February 6, 2011*

**chemistry**

what mass of magnesium is needed to reduce a 500ml sample of oxygen at stp to a 375ml sample? Mg + O2--> MgO + O2
*February 3, 2011*

**science**

what is a name given to all of the functional parts that float in cytoplasm??? ( it has to be 10 letters)
*January 24, 2011*

**Science**

what is an 11 lettered word that means "a cell without a membrane?
*January 24, 2011*

**math**

Hi i forgot what the mode and mean are. Can anyone remind me??
*January 22, 2011*

**Physics**

A 210 g air-track glider is attached to a spring. The glider is pushed in 12.0 cm against the spring, then released. A student with a stopwatch finds that 13 oscillations take 16.0 s. Find the spring constant k.
*January 21, 2011*

**science**

Thank you Ms.Sue!
*January 20, 2011*

**science**

What is the definition of "Organ System"?
*January 20, 2011*

**algebra**

Please help! How do I solve this problem? 4 - 4 __ __ x+2 x _________ = 1 2
*January 18, 2011*

**Math**

well my father made me do that and he was WRONG!!
*January 12, 2011*