Sunday

April 20, 2014

April 20, 2014

Total # Posts: 1,018

**Chemistry**

If you have 108 grams of Al and 108 grams of O subscript 2 which reactant is the limiting reactant?

**Chemistry**

If you have 4.00 moles Al(aluminum), how many moles of O (oxygen)subscript 2 are needed for a complete reaction?

**Science**

A tiltmeter is a volcanic monitoring tool that measures _____. a)vibrations and tremors in the ground b)smoke plumes c)ground swelling d)water levels do you mind exp it a little bit better thanks

**World Geography **

thanks a lot

**World Geography **

please Write a short essay comparing the ways in which command economies and market economies affect a worker's life? or if you want exp it a little better to me.

**social studies**

how did china and Japan feel about the europeans moving westward

**prealgebra**

3/5y+8 ------ 3/5y-8 simplify

**prealgebra**

3/5y+8 ------ 3/5y-8 simplify

**Science -CLIMATE**

Explain how different temperatures on earth create winds.

**geometry**

what is a quadrilateral shape with adjacent sides not equal; 2 pairs of conguent sides; 4 right angles?

**algebra**

Simplify 5-3(x-1) what are the steps?

**science**

why dont earthquakes form on the san andreas fault?

**Literature**

It was very well written, I hope you got a good grade.

**Math**

The sum of my two digits is 13. I am not divisible by 2. List all possible numbers I could be.

**Trigonometry**

these values right? tan theta=2/3 sec theta=Squareroot(13)/3 sine=2xSquareroot(13)/13 Cos=3xSquareroot(13)/13 Tan=2/3 Cosecant=Square root (13)/2 Secant=Squareroot(3)/3 Cotangent=3/2

**spanish 2**

were learning about affirmative/negative usted/tu commands and on the model it says "Tenemos pelo sucio. (el perfume)" and then the answer is "no lo compren" why compren, why not compre?

**geometry**

the measure of two sides of a triangle are 15 and 18. Between what two numbers must the measure of the third side fall?

**9th grade**

x=6. it's pretty simple haha.

**Analytic Geometry**

x^2-y^2-6x+8y-3=0 Find the center vertices, foci, and asymptotes for the hyperbola.

**algebra**

Yes, I agree. I have used synthetic division to solve for 3+i and 3-i, giving me two answers. But because the highest degree of exponents is x^4 then I can expect to find four answers right?

**chemistry**

If a compound's empirical formula is CH2O and its' formula mass is 120.12 amu, what is its' molecular formula

**Math**

Three neighbors are sharing a rectangular strip of land fir a garden. They divide the land into 24 equal-sized pieces. What fraction of the land does each person get if they share it equally? Write the answer in more than one way

**Math**

The Lappans buy 3 large sandwich wraps to serve at a picnic. 9 people in all will be at the picnic. Show 3 different ways to cut the sandwiches so that each person gets an equal share.

**Math**

cheryl, rita and four of their friends go to a movie and share equally a 48-ounce bag of popcorn and three 48-inch licorice laces. Find the fraction of popcorn each gets and the fraction of licorice each gets.text

**8th grade Algebra I (junior level math)**

How do i solve proportions? step by step answers plz!!!! EXAMPLE! g/5 = 6/10

**7th grade**

Pi times r squared

**9th grade Geography**

d then

**9th grade Geography**

Africa

**9th grade Geography**

Which of the following statements about manufacturing in the region is NOT true? a. About 50 percent of the region’s GDP comes from manufacturing. b. Demand for manufactured goods has increased. c. Workers produce textiles, paper goods, and cement. d. Locally produced go...

**8th grade math**

Hi i need one more example of this algebraic expression please. and explain please. Fig# Value 1 0 2 1 3 8 4 27 Math-Nick

**math**

Hi i need one more example of this algebraic expression please. and explain please. Fig# Value 1 0 2 1 3 8 4 27 Math-Nick

**8th grade**

Hi my class is doing a unit on patterns with algebraic expressions. And i need to find a difficult expression Figure# Term value 1 8 2 27 3 64 4 125 what is the algebraic expression and how did u do it? thank you. Math-Nick

**math**

2 is the only blank prime

**6th grade**

1- At the bottom of the classes were Slaves and Farmers - they represented the greatest percent of the Egyptian population. The workers supported the professionals above them, just as the base of the pyramid supports the rest of the structure 2- Above were skilled Craftsmen 3-...

**Probability**

A coin is tossed 7 times. What is the probability of getting four heads. My teacher said that there is a formula involved but i don't know which one. How do i set it up?

**social studies**

what colonies did the French found as a result of searching fo rthe Northwest Passage?

**School**

Sorry, I meant how can you prove that the equation of any circle with radius (r) and the center at the origin is x^2+y^2=r^2?

**School**

How can you prove that the equation of any circle with radius (r) and the center at the origin is x^2+y^2=36? Please help!?!

**Grammar**

In the following sentence I think ambition is a noun that is an idea. Is that right? The strong supporter of the League of Nations had great ambitions.

**world history**

what are the 5 most important events in the story of columbus

**Math**

This has to do with area. Determining the perimiter would only tell you how many tiles you would need for surrounding the bathroom with tiles. Area would cover the whole bathroom.

**psychology**

d,a

**math**

There is a solution. The solution is an imaginary number.

**4 grade mat**

37

**4 grade math**

false

**Psychology**

1 is right. 2 is wrong

**French**

I would put "Ceux qui ne fument pas sont genes (put accent aigus on both "e"") par les autres qui fument . Not necessary to say les autres gens (we assume already it is people) Do not use bouleverses (it is more emotional)

**5th Grade Math**

right

**History**

How did geography affect arab life

**7th grade math**

even

**7th grade math**

this is a cross word frist question is 2 is the only _____________ prime

**5th grade - Social Studies **

what colonies did the French found as a result of searching for the Northwest Passage?

**Physics**

a bottle is given a push along a frictionless tabletop and slides off the edge of the table (a) what forced are exerted on the bottle while (i) it is being pushed (ii) on the table free of push(iii)falling from the table to the floor. (b) what is the reaction force to each for...

**BIOLOGY**

BARRIER

**Physics**

you a resident physician are reading the medical chart o a normal adult female patient carelessly one of the nurses has entered this nurse's suggestion is physically reasonable: (a) the number is 150 and units are kilograms. (b) the number is 4.25 and the units are slugs. ...

**math**

5/9 (98.6 F - 32)=

**physics**

In the figure below, a box of Cheerios (mass mC = 1.0 kg) and a box of Wheaties (mass mW = 3.5 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is 2.0 N, and the magnitu...

**physics**

In the figure below, a slide loving pig slides down a certain 18° slide in twice the time it would take to slide down a frictionless 18° slide. What is the coefficient of kinetic friction between the pig and the slide? Explanation would be helpful.

**4th grade**

what happens to the sun's radiation?

**physics**

After flying for 15 min in a wind blowing 42 km/h at an angle of 20° south of east, an airplane pilot is over a town that is 42 km due north of the starting point. What is the speed of the airplane relative to the air?

**physics**

i need more help

**physics**

After flying for 15 min in a wind blowing 42 km/h at an angle of 20° south of east, an airplane pilot is over a town that is 42 km due north of the starting point. What is the speed of the airplane relative to the air?

**physics**

After flying for 15 min in a wind blowing 42 km/h at an angle of 20° south of east, an airplane pilot is over a town that is 42 km due north of the starting point. What is the speed of the airplane relative to the air?

**physics**

Snow is falling vertically at a constant speed of 6.6 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight, level road with a speed of 66 km/h?

**4th grade**

subtractiom\n

**physics**

In the figure below, a stone is projected at a cliff of height h with an initial speed of 45.0 m/s directed 60.0° above the horizontal. The stone strikes at A, 5.20 s after launching. Find the speed of the stone just before impact at A. Find the maximum height H reached ab...

**physics**

What is the magnitude of the acceleration of a sprinter running at 9.0 m/s when rounding a turn of a radius 26 m?

**government**

does the senate pass laws?

**physics(cross products of vectors)**

How do I perform the right hand rule? I'm confused.

**physics**

Two diamonds begin a free fall from rest from the same height 0.9 s apart. How long after the first object begins to fall will the two objects be 11 m apart?

**physics**

.02 hr

**physics**

Two diamonds begin a free fall from rest from the same height 0.9 s apart. How long after the first object begins to fall will the two objects be 11 m apart?

**Science**

A ball thrown from the edge of a 35m high cliff takes 3.5s to reach the ground below. What was the ball's initial velocity?

**physics**

A lead ball is dropped into a lake from a diving board 5.24 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.86 s after it is dropped. (Assume the positive direction is upward.) ...

**physics**

A lead ball is dropped into a lake from a diving board 5.24 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.86 s after it is dropped. (Assume the positive direction is upward.) ...

**physics**

thanks damon

**physics**

(a) If the maximum acceleration that is tolerable for passengers in a subway train is 1.52 m/s2 and subway stations are located 1030 m apart, what is the maximum speed a subway train can attain between stations? b)what is the travel time between stations? c)If a subway train s...

**Physics**

(a) If the maximum acceleration that is tolerable for passengers in a subway train is 1.52 m/s2 and subway stations are located 1030 m apart, what is the maximum speed a subway train can attain between stations? b)what is the travel time between stations? c)If a subway train s...

**math**

i am working on a math project and i need 10 different representations of the number 256..its due tomorrow

**physics**

The head of a rattlesnake can accelerate 50 m/s2 in striking a victim. If a car could do as well, how long would it take to reach a speed of 78 km/h from rest?

**Physics**

Thank you.

**Physics**

An electric vehicle starts from rest and accelerates at a rate of 3.0 m/s2 in a straight line until it reaches a speed of 26 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. a)How much time elapses from start to stop? b)How far does the vehicle travel...

**math**

Do you mean a bar or a line?

**Physics**

thanks

**Physics**

A car traveling 56 km/h is 21.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.17 s later. a)What was the car's constant deceleration before impact? b)How fast was the car traveling at impact?

**ALGEBRA 2**

a=6,b=8

**math**

I am trying to figure out a lettern pattern and what comes next A,Y,C,W,__ __ ___ I need to explain the rule for this pattern but I am having a hard time

**science**

two tuning forks are struck at the same time. one tuning forkhas a frequency of 20hz while the second tuning fork has a frequency of 226 hz. How many beats will result?

**science**

two tuning forks are struck at the same time. one tuning forkhas a frequency of 20hz while the second tuning fork has a frequency of 226 hz. How many beats will result?

**Mircoeconomics**

A significant difference between monopoly and perfect competition is that: A. free entry and exit is possible in a monopolized industry but impossible in a competitive industry. B. competitive firms control market supply but monopolies do not. C. the monopolist's demand cu...

**Math**

What is the probability that a random sample of 25 swimmers results in a sample mean of 49 seconds or less?

**Mathematics**

Two readings are taken from an aircraft's flight record Time - 08:55 Distance travelled - 957 Time - 09:07 Distance travelled -1083 For the period of time between the two readings, how do i calculate a)the distance travelled in kilometres and b)the average speed of the air...

**chemistry**

Using your knowledge of atoms describe reasons the paper's physical properties are different from the water's physical properties...Please Help

**Chemistry**

"18 M sulfuric acid is need to prepare 250 ml of a 6.0 M solution" - this is an M1V1 = M2V2 type problem. For help have a look at cal.culate.it/dilution. Meanwhile, using chemCal on the iPhone (cal.culate.it/c) the answer is: 83.3 ml

**Chemistry**

"5.61 moles of KCl and 2.11 kg of water?" Well, water has a density of 1g/ml. So, 2.11 kg, is 2.11 liters. Therefore you have 5.61 moles in 2.11 liters. Molar is moles per liter, therefore, 5.61 / 2.11 = 2.66 M. For help on moles and molar have a look at cal.culate.i...

**math**

the formula said 23%

**math**

Multiple Choice: For each of the given family incomes, find the maximum amount the family should be able to spend on a house. Family income: $61,575 a)$163,936.50 b)$153,836.50 c)$153,937.50 Family income: $54,800 a)$138,500 b)$137,000 c)$138,000

**Math**

I can't figure any of these problems out any help would be nice peace. Show all steps used to solve the problem. 1.5n + 6 = -4 3.b/-3+5=7 4.17-x/4=-10 5.If 3a - 9 = 6, what is the value of 4a - 1? 6.

**Bible**

please, can anyone help us?

**Bible**

Here are some descriptions and I need to know the correct character: 1.I complained and became a leper 2.I was able to interpret dreams because God revealed them to me 3. I was Jacob's deceptive uncle 4.I was the father of Israel's second King 5.I stole some gold from ...

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