Saturday

February 13, 2016
Total # Posts: 91,686

**Quick Physics Check**

2. Which of the following examples does not show projectile motion? A. a tennis ball bounces across the net B. a ball is thrown at a downward angle toward a target on the ground C. a feather drifts to the ground D. a horseshoe is pitched at a stake Is it C? 3. Which of the ...
*November 9, 2015*

**Math**

Is it 60degrees
*November 9, 2015*

**Math**

the measure of an exterior angle of a trangle is 125 the measure of one of its remote interiot angles is 65 what is the measure of the other remote interior angle
*November 9, 2015*

**maths**

I'm not sure if I got this right because the answer I got is €5.00\€6.25 So the question is: Eugene spent half his money in one shop and half of what was left in another shop. He then had €1.25. How much had he in the beginning
*November 9, 2015*

**Social Studies ( Check my answer)**

1. What group of people made up the largest percentage of workers in American industry during the late nineteenth century? Native Americans Immigrants *** Plantation Owners
*November 9, 2015*

**math**

insert the decimal point so that the 8 has a value of eight thousandths: 3768
*November 9, 2015*

**math**

kilogram of rice is $3.oo. how much is 400 gms
*November 9, 2015*

**History**

B is 3 i got a hundred with that answer
*November 9, 2015*

**Comm Tech**

what were the answers to this?
*November 9, 2015*

**earth/space**

with her hands
*November 9, 2015*

**social studies**

It is B federal
*November 9, 2015*

**social studies**

its B
*November 9, 2015*

**Chemistry**

Oh Never mind.
*November 9, 2015*

**Chemistry**

How do you get the 52.2? 1.19 x 36.1 = 43.0?
*November 9, 2015*

**Chemistry**

The thermal decomposition of carbonates leads to the loss of CO2. The decomposition of an unknown carbonate leads to a 35.1% weight loss. The unknown was which of the following compounds? A. Li2CO3 B. MgCO3 C. CaCO3 D. ZnCO3 E. BaCO3 How do I solve this?
*November 9, 2015*

**chemistryyy**

thank you for answering!
*November 8, 2015*

**chemistryyy**

how do i get from Molarity to % g / mL ??? I have a concentration of .2379 M.
*November 8, 2015*

**Physics**

A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?
*November 8, 2015*

**Chemistry (Check)**

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
*November 8, 2015*

**Chemistry (Check)**

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
*November 8, 2015*

**Is this cheating?**

Hi so Friday, my friend wasn't quite understanding the assignment and nobody was allowed to talk in the classroom. So, she just asked to see my notebook to look if she was doing it right. The teacher walks over, automatically assumes she was copying/cheating off my answers...
*November 8, 2015*

**geography**

if you start at 10 degrees south latitude by 140 degrees west longitude and sail to 20 degrees north latitude by 105 degrees west longitude which general direction are you traveling?
*November 8, 2015*

**Chemistry**

The thermal decomposition of carbonates leads to the loss of CO2. The decomposition of an unknown carbonate leads to a 35.1% weight loss. The unknown was which of the following compounds. A. Li2CO3 B. MgCO3 C. CaCO3 D. ZnCO3 E. BaCO3
*November 8, 2015*

**Physics**

A stone weighs 34.0 N. What force must be applied to make it accelerate upward at 4.00 m/s2?
*November 8, 2015*

**Geography**

Why
*November 8, 2015*

**Geography**

Does the US have a responsibility to help the Cuban and Haitian people?
*November 8, 2015*

**Chemistry (I tried to do more)**

10.0gNaOH x (1moleNaOH / 39.99711gNaOH) = .250moleHaOH .250moleNaOH / .500L = .500M Is this right?
*November 8, 2015*

**Chemistry**

Calculate the molarity of a solution prepared by dissolving 10.0 grams of NaOH and then diluting the solution to 500mL.
*November 8, 2015*

**Geography**

The United States would process their applications in Cuba. The United States also allowed the more than 30,000 Cuban refugees held at Guantanamo to immigrate. Cuban refugees caught at sea would be returned to Cuba. Cuban refugees who made it to the U.S. shore could stay. My ...
*November 8, 2015*

**Geography**

What has been the US policy since the CUban Revolution toward refugees from Cuba? Answer : The US had long had a policy of accepting all refugees from Cuba What is the US Policy Today?
*November 8, 2015*

**Government**

Explain the primary/caucus system for nominating presidential candidates
*November 8, 2015*

**Geography**

How was the US involved in the past in the internal affairs of Cuba and Haiti?
*November 8, 2015*

**Geography**

Primary is concerned with natural rsources and secondary produces raw materials into products which can lead to people moving to these areas
*November 8, 2015*

**Geography**

Why would countries involved in primary and secondary economic growth still have rapidly increasing population?
*November 8, 2015*

**Government**

What usually happens to the presidents incumbent party in the midterm elections?
*November 8, 2015*

**Geography**

more developed countries do not have a population growth problem rather their population is steady or decrasing why
*November 8, 2015*

**Geography**

Why would countries be concerned with their population decreasing? Why would countries be concerned with their population increasing?
*November 8, 2015*

**math**

Dees mutts Ha got em
*November 8, 2015*

**math**

Idk how to write a partitive division story problem for 45÷3/5
*November 8, 2015*

**math**

If an airplane travels at a speed of 450 km/h, how many meters does it travel in 10 seconds?
*November 8, 2015*

**Chemistry (I tried to do more)**

100g / 444.55504g = .225 x 4 = 0.900 Is this right?
*November 8, 2015*

**Chemistry**

How many moles of phosphorus atoms are in 100 grams of P4S10?
*November 8, 2015*

**math**

Let f(x)=(3x-7)/(x+1) What is the range of f? Answer in interval notation. (The domain is (-inf,-1) U (-1,inf)
*November 8, 2015*

**Math**

At a halftime show a matching band marched in formation. The lead drummer started at a point with coordinates (-2,-5) and moved 3 steps up and 1 step right. A. Write a rule to describe the translation B. What were the coordinates of the drummers final position? A: Write a rule...
*November 8, 2015*

**Chemistry**

Which of the following nitrogen-containing compounds would supply the most nitrogen per gram of fertilizer? a. iron azide, Fe(N3)2, MW = 140 g/mol b. sodium azide, NaN3, MW = 65 g/mol c. potassium nitrite, KNO2, MW = 85.1 g/mol d. potassium azide, KN3, MW = 81.1 g/mol e. There...
*November 8, 2015*

**chemistry**

ddf
*November 8, 2015*

**Chemistry (I tried to do more)**

1. 3x10^-23g 2. 2x10^-19g 3. 1x10^-20g 4. 6x10^-23g I got B.
*November 8, 2015*

**Chemistry**

Arrange the following in order of increasing mass: 1. one F atom 2. 1x10^-20 mol of F 3. 1x10^-20g of F 4. one F2 molecule A. 1<2<3<4 B. 1<4<3<2 C. 3<1<2<4 D. 2<1<3<4 E. none of these I'm thinking C
*November 8, 2015*

**Quick English check**

Select the term that is best represented by each statement below. (The words are: admonish, advocate, bias, exposulate, influential, interaction, linguistic, susceptible, temperament, and wary.) 1. "I am a decided preference in favor of a particular side." (...
*November 8, 2015*

**please give me a site or answer!!!!**

I did try google, bunch of dumb As ^ who tf suggest wikipedia Steve needs to stfu goodbye
*November 8, 2015*

**please give me a site or answer!!!!**

description of the population statistics LOCATION in South Carolina already found the age and race just having trouble with the location statistics please help!!!!!!
*November 8, 2015*

**Chemistry (I tried to do more)**

For the balanced chemical formulas are: 3Mg(s) + N2(g) --> Mg3N2(s) Mg2N2(s) + 6H2O --> 3Mg(OH)2(aq) + 2NH3(aq) I'm still struggling with finding the grams of Magnesium needed to start with to prepare 15.0 grams of ammonia. I don't know how to do reverse ...
*November 8, 2015*

**Chemistry**

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium would we have to start with to prepare 15.0 ...
*November 8, 2015*

**Conrady**

X=400
*November 8, 2015*

**physics**

two force vectors, f1 18N at 60 degree above the positive axis and F2 6.5N at 45 degree below the positive axis, are applied to a particle at the origin. what third force f3 would make the net force on the particle equal to zero
*November 8, 2015*

**Math Word Problem**

tags given to students and parents = k/2 + 100 tags remaining = k - (k/2+100) = k/2 - 100 tags given to teachers and judges = (3/5)(k/2 - 100) so tags not given out = (2/5)(k/2 - 100) = k/5 - 40 check: assume they had 600 namtags according to my expression, 600/5 - 40 or 80 ...
*November 8, 2015*

**math**

t(4) = 6 ---- a + 3d = 6 t(8) + t(9) = -72 a+7d + a+8d = -72 2a + 15d = -72 double the first equation 2a + 6d = 12 subtract them 9d = -84 d = -84/9 = -28/3
*November 8, 2015*

**probability**

Adefective coin minting machineproducescoinswhoseprobability ofheadsisarandomvariable P with PDF 1+sin(2πp), if p ∈ [0,1],fP (p)= 0, otherwise. Inessence,aspecificcoinproducedby thismachinewillhavea fixedprobability P = p of giving heads, but you do not know ...
*November 8, 2015*

**math**

let the height be x (13)(1/2)x < 65 x < 2(65)/13 x < 10 where 0 < x < 10 , x is a real number of course there would be an infinite number of solutions if you allow decimals or fractions.
*November 8, 2015*

**mpc**

A reasearcher wishes to be 95% confident that her estimate of the proportion of two individuals who travel over sea is within 4% of the true proportion. Find the sample necessary if in a prior study a sample of 200 people showed that 40 traveled overseas last year. if no ...
*November 8, 2015*

**ap physics**

The acceleration due to gravity on the moon has a magnitude of 1.62 m/s. deal with a placekicker kicking a football. Assume that the ball is kicked on the moon instead of on the earth. Find (a) the maximum height H and (b) the range that the ball would attain on the moon.
*November 8, 2015*

**Calculus**

Consider a sphere container with radius R. 1. Suppose it is filled to height h, below halfway, with water. Find the volume of the water. 2. What is the proportion of the sphere's total volume taken up by the water filled as described in problem #1? 3. Suppose it us filled ...
*November 7, 2015*

**Calculus-Read this,Reiny!**

For this part: "for the volume you would have 2π∫(-x+π/2)^2 - (cosx)^2 dx from 0 to 3π/2 " Do you mean the volume when revolves around the x -axis? If so, this would produce a washer, right? If it is a washer then is the formula.. V= pi (and not ...
*November 7, 2015*

**Calculus-Reiny**

Yay! Reiny, you read the description of f(x) correctly. Recall the problem posted earlier: Let f(x)= abs of negative abs of x + pi/2 close abs and g(x)= abs of cosx. the wording might be confusing so here is another description of the equation (the "vertical line" ...
*November 7, 2015*

**Government**

How do today’s national conventions differ from those of 50 years ago?
*November 7, 2015*

**Calculus**

suppose a sphere container of radius R=10 cm is fulled to a height of h=2 cm with a magic potion of density p=12g/mm^3. If the empty container weighs 500 g, how much does it weigh after the potion is poured in?
*November 7, 2015*

**Government**

At what federal level do we have term limits?
*November 7, 2015*

**Calculus**

Let f(x)= abs of negative abs of x + pi/2 close abs and g(x)= abs of cosx. the wording might be confusing so here is another description of the equation (the "vertical line" that I refer to is the line you draw as you draw the absolute value sign...for example "...
*November 7, 2015*

**Organic Chemistry 2**

I'm assuming you would want to remove the HCl from the catalyst.
*November 7, 2015*

**Organic Chemistry 2**

what compound are you using as the reagent?
*November 7, 2015*

**English**

Would you also put commas inside the quotations too
*November 7, 2015*

**English**

Individuality, which leads to becoming a social outcast, is expressed specifically within these two films “Edward Scissorhands” and “Charlie and the Chocolate Factory”. Did I use the right punctuations in this sentence
*November 7, 2015*

**Organic Chemistry**

Identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm–1 NMR: δ 3.10 (1H, d, J = 2 Hz); δ 3.79 (3H, s); δ 4.52 (1H, doublet of doublets, J = 6 Hz and 2 Hz); δ 6.38 (1H, d, J = 6 Hz)
*November 7, 2015*

**US history**

ture
*November 7, 2015*

**general physics question**

Whenever I read my science textbooks, they always say that "electrons were fired" or "stream of electrons were fired to the target" during an experiment my question is, how to they generate a stream of electrons to fire in a line?? sorry if this is a dumb ...
*November 7, 2015*

**math **

June wishes to make a deposit. She has these bills: 41 ones, 7 fives, 3 tens, and 2 twenties. She has 8 nickels, 7 dimes, and 22 quarters. June has checks for $51.25 and $14.75. June wants to receive $50 in cash. What would she enter on the TOTAL line?
*November 7, 2015*

**math **

Brooke received her bank statement on March 7, showing a balance of $2,668.02. The balance shown in her checkbook was $2,256.20. Deposits in transit amounted to $646.53 and there was a service charge of $7.00. Outstanding checks were $276.69, $380.00, $35.00, and $282.68, and ...
*November 7, 2015*

**Calculus**

Evaluate the integral. (Remember to use ln(|u|) where appropriate.) cot^3(3x) dx
*November 7, 2015*

**Chemistry- Dr. Bob**

Question 1 Calculate the wavelength (in nm) of the red light emitted by a neon sign with a frequency of 4.74 x 1014 Hz. A) 704 nm B) 158 nm C) 466 nm D) 633 nm E) 142 nm My answer: D.633 nm Question 2 How many photons are contained in a burst of yellow light (589 nm) from a ...
*November 7, 2015*

**Chemistry- Dr. Bob**

An electron in the n=7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 2166 nm. What is the value of n for the level to which the electron relaxed?
*November 7, 2015*

**Maths**

A closed box in the shape of a cuboid has dimensions x cm, y cm and 5 cm. The volume of the box is 40 cm^3 and the external surface area is 76 cm^2. A) use the information about the volume to find and equation connecting x and y B) use the information about the external ...
*November 7, 2015*

**maths**

A box 48 cm by 48 cm by 36 cm high is made of wood .5 cm thick. If the box has no lid, find the volume of wood used in making the box.
*November 7, 2015*

**Physics**

I'm sorry, but I don't think part a's equation is right, unless I read the equation wrong. The answer key says, part a is 2.7 x 103 m = 278.1 and 1.5 x 104 m = 156. Also, for part b, if I read the equation right, is the answer 14,981.3562 m?
*November 6, 2015*

**Physics**

A ship fires its guns with a speed of 400 m/s at an angle of 35 with the horizontal. a. Find the range and maximum altitude. b. If the ship hits a plane that was 12 km away, how high was the plane flying?
*November 6, 2015*

**Physics**

A person kicks a rock off a cliff horizontally with a speed of 20.0 m/s. It takes 7.0 seconds to hit the ground, find: a. height of the cliff b. final vertical velocity c. horizontal range
*November 6, 2015*

**soil chemistry**

Can someone please help me answering this question regarding soil chemistry? A sandy soil has a CEC = 5 meq/100g and a K saturation = 6%. An alfalfa crop yields 5 ton/ac/yr at 3% K. Calculate initial exchangeable K and estimate final exchangeable K. Where did the additional K ...
*November 6, 2015*

**Health**

THANK U SO MUCH SALTED CARAMEL 100%
*November 6, 2015*

**Physics **

How much time does it take for a car to come to rest if it has an initial speed of 22m/s and slows with a deceleration of 6.1 m/s^2 Will my answer be 3.6 m/s^2
*November 6, 2015*

**Maths**

Solve this simultaneous equation: x+3y=2 and x/3+y/2 =1 Please explain step by step so i understand for future reference. Thankyou x
*November 6, 2015*

**Help please**

The answer is A. -6=-5(2)+4
*November 6, 2015*

**Help please**

A
*November 6, 2015*

**social studies **

i read all about it is this the answer a really need this grade to be good that way i can move on to the next grade.?
*November 6, 2015*

**SS help connections academy**

It ranks among the world’s oldest frozen conflicts, but an “unusual alignment of the stars” is raising new hopes that Cyprus may soon be on the road to reunification, the top diplomat of the divided island’s Turkish Cypriot government said in an interview...
*November 6, 2015*

**SS help connections academy**

Will someone please help me with this question because i need this to be done for a grade and if yall give me the answers this time i will not ask for the answers next time. PLEASE AND THANKS(◠‿◠)
*November 6, 2015*

**SS help connections academy**

please all we need is a few sentences and i have read that before and it's confusing. i get what yall are saying but just please this is for and important class please and thanks.
*November 6, 2015*

**English**

How may a person describe Ernest Hemingway?
*November 6, 2015*

**english4**

How does Macbeth’s tragic flaw lead him to disaster in the final act of The Tragedy of Macbeth by William Shakespeare? His desire for revenge destroys Dunsinane. His ambition starts him on a path that leads to more evil. His greed causes him to betray the king. His ...
*November 6, 2015*

**Physics**

Mr.Notten throws an egg from the top of a school at an initial velocity of 20m/straight upward. The egg is launched 50 m above the ground, and the egg just misses the edge of the roof on its way down? what is maximum height? what is the maximum height of the egg? Determine the...
*November 6, 2015*

**emgineering**

A box with a mass of 5.0 kg is placed on a flat sloping surface elevated at 40o to the horizontal. The coefficient of static friction is 0.76. It is prevented from slipping down the slope by a force applied parallel to the slope. What is the magnitude of this force?
*November 6, 2015*

**Physics**

I don't understand the maximum height part? what is the formula?
*November 6, 2015*