Tuesday
January 17, 2017

# Posts by ANON

Total # Posts: 2,600

sal's movie rental club membership costs \$11 per month. with a membership, each movie costs \$2. sal's monthly movie rental charge was \$23. how many movies did sal rent?
November 9, 2011

Math
three friends each own land in the same town. Miguel owns 71/2 acres. Jorge & Juanita own the same number of acres. if the friends own 20 1/3 acres altogether, how many acres do Jorge and Juanita owns?
November 9, 2011

Math
Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?
November 9, 2011

Math
Leroy ran a total of 15 miles last month. He ran 5/8 mile each day. How many days did he run?
November 9, 2011

College Physics
A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter?
November 6, 2011

College Physics
A child plays on a bungee cord and oscillates with a certain frequency f. An adult with a mass that is 16 times greater than that of the child then uses the same bungee cord. What is the ratio of the frequency with the adult to the frequency with the child? I tried to answer ...
November 6, 2011

statistics
Help me! Population of heights of college students is approximately normally distributed with a mean of 64.37 inches and standard deviation of 6.26 inches A random sample of 74 heights is obtained. Find the mean and standard error of the x bar distribution 2. Find P(xbar > ...
November 6, 2011

statistics
If a population has a standard deviation of 5 units what is the standard error of the mean if samples of size 25 units are selected????
November 4, 2011

Anime
How would you differentiate anime from American animated series/films? Is it in the story-line, art, etc.? Do they influence one another? Also, how has anime evolved over time, and what exactly is its purpose?
November 2, 2011

s.s
i mean i understand where you are coming from all im sying is there is no need to be rude about it :)
November 2, 2011

s.s
Ms. sue i just have one question for you why do you have to jump into every post and be such a snarky stick int he mud i mean people need help alot of the books suck and public school teachers don't care anymore i mean people come and ask for help and you just spit in ...
November 2, 2011

critical thinking.
which of the following is the best example of "negative evidence" for the claim," samsung makes excellent quality phones"? A. 50.6 of htc evo users prefer evo to samsung's android. B. the main competitors of samsung are htc,nokia and black barry. C. 4 ...
October 31, 2011

I was wrong. For question 2 I'm think it's C. (hope I'm right) and for the truth and false question .I think its true. but i'm not sure!
October 31, 2011

Truth or False : for business writing,it is always best to present the most analytical, matter of fact writing in order to be convincing. most claims in business,and in persuasive writing generally tend to be contestable claims.this requires the author of the argument to do ...
October 31, 2011

Chemistry
A person suffering from hyponatremia has a sodium ion concentration in the blood of 0.118 Mand a total blood volume of 4.6 L.What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.138 M, assuming no change in blood volume?
October 31, 2011

Chemistry
(a) Calculate the molarity of a solution that contains 0.175 mol ZnCl2 in exactly 150 mL of solution. (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid? (c) How many milliliters of 6.00 MNaOH solution are needed to provide 0.325 mol of NaOH?
October 31, 2011

Chemistry
An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic. The solution is weakly conducting compared with a solution of NaCl of the same concentration. Which of the following substances could the unknown be: KOH,NH3,HNO3, KClO2, H3PO3, ...
October 31, 2011

Opinion
Generally speaking, what can we learn from a society's villains faced by its heroes that we can't learn from its heroes? Is it easier for you (personally) to understand what a villain represents than a hero? On a similar note, do you think it's easier to say what ...
October 28, 2011

science
In what direction do you turn the coarse focus adjustment know to move the object away from your slide? In what direction do you turn the fine adjusment?
October 27, 2011

Chemistry
1)What could have caused the impurity in the sodium hydroxide solution... 2)Why was it necessary to dilute the hydrochloric acid before carrying out the titration This was a question from a titration practical in which we had to dilute HCL then use that along with 25cm3 of ...
October 26, 2011

physics
A person can jump a maximum horizontal distance (by using a 45 projectile angle) of 5 m on Earth. What would be the maximum range on Mars, where the acceleration due to gravity is 0.38 g?
October 25, 2011

A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m What maximum height does he reach?
October 24, 2011

chemistry
DrBob222's solution worked. The answer for 2.20g CO2 from 4g sample is 64.35%. Hope this helps someone with their Sapling HW.
October 24, 2011

Physics Honors
@ K, You should check your work before posting an answer. The correct answer should be a) 3.5s b) 21m
October 23, 2011

Physics
The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 4.0 1011 m. Find the period of the orbit IN SECONDS!!!???
October 22, 2011

Fighting Style
Which fighting style is mainly used in modern day films and why? With Bruce Lee creating his own style of martial arts, what research did Bruce Lee had to do for his his style Jeet Kun Do to be successful and does it still exist in modern times? Does the Jeet Kun Do style used...
October 19, 2011

College Physics
In Chapter 3 we learned that the force of air drag on an object moving rapidly through the air is proportional to v2, where v is the speed of the ball relative to the air. The same relation applies to the force of the wind on the blades of a wind turbine (Figure 9.4), where v ...
October 18, 2011

College Physics
A rod of mass 4.3 kg and length 4.3 m hangs from a hinge as shown in Figure P9.28. The end of the rod is then given a “kick” so that it is moving at a speed of 2.3 m/s. How high will the rod swing? Express your answer in terms of the angle (in degree) that the rod ...
October 18, 2011

Physics
I tried that and did not get the right answer. I think I need to use KE_i + PE_i = KE_f + PE_f ... which would be: .5mv_i^2 + 1/2Iw_i^2 + mgh_i = 1/2mv_f^2 + .5Iw_f^2 +mgh_f --> I= 2/5mr^2 for a solid sphere I factored out the mass on both sides but my problem is that I ...
October 18, 2011

Physics
A bowling ball is rolled up an incline. If the ball has a speed of 12 m/s at the base of the incline, to what height h on the incline will the center mass travel?
October 18, 2011

Chemistry
Determine the pH of a 0.10 M MgCl2 solution.
October 16, 2011

Physics
You like to swim at a nearby lake. On one side of the lake is a cliff, and the top of the cliff is 69 m above the surface of the lake. You dive of the cliff doing somersaults so as to have an angular speed of 5.5 rev/s. How many revolutions do you make before you hit the water...
October 11, 2011

Chemistry
How many milliliters of a 0.66 M HCl solution are needed to react completely with 1.9 g of zinc to form zinc(II) chloride?
October 4, 2011

Science
surrounding, surroundings
October 4, 2011

pre calculus
I can't believe it's that simple, I have been going crazy! Thank you!
October 2, 2011

pre calculus
Change the exponentioanl expression to an equivalent expression involving a logarithm. e^-1/3 = 9t Somebody help PLease!
October 2, 2011

physics
A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi at 38.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h Can u show the steps and answer to it, thanks.
September 27, 2011

Chem
After filling a flask with water and allowing 15 minutes in a water bath, a student finds that the water level has dropped. How is this possible?
September 27, 2011

Chemistry
Thanks. I think I get it, but I don't know how to get the mass...
September 27, 2011

physics
A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi at 38.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h Can u show me the steps to this problem.
September 26, 2011

physics
A car travels in a straight line for 5 h at a constant speed of 73 km/h . What is its acceleration? Answer in units of m/s2
September 26, 2011

physics
can u show me the steps to the problem. thanks
September 26, 2011

physics
A car travels along a straight stretch of road. It proceeds for 14 mi at 50 mi/h, then 28.3 mi at 48 mi/h, and finally 37.4 mi at 38.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h
September 26, 2011

Physics
A baseball pitcher can throw a baseball at a velocity of 44.5 m/s. If the mass of the ball is 0.12 kg and the pitcher has it in his hand over a distance of 1.79 m, what is the average force exerted by the pitcher on the ball?
September 26, 2011

physics
A car travels in a straight line for 4.9 h at a constant speed of 73 km/h . What is its acceleration? Answer in units of m/s2
September 25, 2011

physics
A car travels along a straight stretch of road. It proceeds for 15 mi at 51 mi/h, then 28.2 mi at 44 mi/h, and finally 36.4 mi at 39.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h
September 25, 2011

physics
If a race car completes a 3 mi oval track in 50 s, what is its average speed? Did the car accelerate? 1. Yes, the speed changed. 2. No, the speed didn’t change. 3. Yes, the direction of the motion changed.
September 25, 2011

physics
A jet travels at 433 m/s. How long does it take to travel 210 m? Answer in units of s How long to travel 12.4 km? Answer in units of s How long to travel 11 in? Answer in units of s thank you
September 25, 2011

SAT algebra
yeah, don't pay attention to original answerer... they are totally wrong. i'm looking for help too :|
September 24, 2011

Physics
In recent years a number of nearby stars have been found to possess planets. Suppose the orbital radius of such a planet is found to be 5.5 x1011 m, with a period of 1210 days. Find the mass of the star.
September 20, 2011

Physics
A stone of mass 3.2 kg is tied to a string of length 0.9 m, and is swung in a horizontal circle with speed v. The string has a breaking point force of 10.1 N. What is the largest value that v can have without breaking the string?
September 20, 2011

Physics
In the game of baseball, a pitcher throws a curve ball with as much spin as possible. This spin makes the ball “curve” on its way to the batter. In a typical case, the ball spins at about 20.5 revolutions per minute. What is the maximum centripetal acceleration of a ...
September 19, 2011

calculus
So, the question is stating that the time period you are looking for is when the ball is thrown at 1 second and goes to .1 second. So, you want the velocity of the ball at the interval [1,1.1]. Velocity is the change in distance/ change in time. What is the change of the ...
September 14, 2011

AP Chemistry
What is the weight of 6.3 × 10 21 atoms of phosphorus? Answer in units of g
September 13, 2011

College Physics
A person riding a bicycle on level ground at a speed of 10.6 m/s throws a baseball forward at a speed of 19.1 m/s relative to the bicycle at an angle of 41° relative to the horizontal (x) direction. (a) If the ball is released from a height of 1.3 m, how far does the ball ...
September 12, 2011

College Physics
A cable attached to a block of mass 16.35 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 9.36 N, what is the coefficient of kinetic friction between the block and the floor? not sure how to do this one ... I am thinking I use...
September 12, 2011

College Physics
A hockey puck slides with an initial speed of 43.2 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.036, what is the speed of the puck after 10.4 s?
September 11, 2011

College Physics
A constant force of 2854 N acts on a spacecraft of mass 6100 kg that has an initial velocity of 32 m/s. How far has the spacecraft traveled when it reaches a velocity of 1170 m/s? I used: Vo=32 m/s, Vf=1170 m/s, F= 2854 N, and mass= 6100 kg I then solved for a by taking N/kg...
September 11, 2011

Physics
A hockey puck slides with an initial speed of 43.2 m/s on a large frozen lake. If the coefficient of kinetic friction between the puck and the ice is 0.036, what is the speed of the puck after 10.4 s?
September 11, 2011

science
I need a hypothesis that I did not use already to determine which bees will fly further-the older ones or the younger ones.any ideas?
September 3, 2011

math solution
not sure but you can try multiplying all the numbers
September 3, 2011

Atomic Number Chem
The atomic number of fluorine is 9. What is the mass number of a fluorine atom with 8 neutrons?
August 29, 2011

physics
August 21, 2011

Physics/Algebra
Oh, yes. I am sorry. I am attempting to calculate the height of the fountain. It does indeed seem rather high. But the numbers for my assignment are randomly generated. So that may explain this phenomenon. Thank you for your help.
August 14, 2011

Physics/Algebra
A student walks around a pool and estimates the pool has a circumference of 240 m. Using a protractor the students gages the angle of elevation to the top of the fountain, in the center of the pool, to be 74 degrees.
August 14, 2011

Algebra
Thank you. :D
August 14, 2011

Algebra
Consider the system: 9x-6y=78 -4y-14x=-68 Find X I have attempted to work through the problem three times, and am having difficulty knowing exactly what to do. Thank you for your help. c:
August 14, 2011

Physics
I don't know
August 13, 2011

PHYSICS
k=2.6*9.8/.05 N/m Make sure you take the difference of the stretched string versus the one without any weight. How long should be x = 4*9.8/k
June 30, 2011

chemistry
HAHAHAHAHAHAHAHA!!!!!!11!1!!one1! that's hilarious... but the answer is -3.2*10^3
June 14, 2011

Physics
A 17 g rifle bullet traveling 220 m/s buries itself in a 3.9 kg pendulum hanging on a 3.0 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement. Horizantal ____ J Vertical _____ J
June 6, 2011

com 155
11. rainforest is one word
May 24, 2011

apchem
can someone explain the synthesis reaction from ethane to acetylene?
May 22, 2011

precalc
find the domain and range of the following as an inequality and interval notation. y=sqrtx-3 2: y=3x+5 3: y= 2/x-7 4; y=2+sqrt x
May 4, 2011

calc
x^2=10-4x
May 4, 2011

modeling and equation solving
using a formla to relate variable quantities associated with the phenomena. a pizza place sells rectangular 18" by 24" pizza for the same price as its large round 24" diameter. if both are the same thickness which option gives you the most pizza for the money.
May 4, 2011

ENGLISH
1 is A 2 is D 3 I don't know 4 is D 5 is A 6 is D 7 I don't know 8 I don't know I think D 9 is C Hope this helps and next time just ask your teacher she is there to help
April 28, 2011

Physical Science
The soup in a bowl is too hot to eat. Although there are no ice cubes in the freezer, there are several stainless steel spoons that have been stored in the freezer for several hours. By placing the cold spoons in the hot soup, the soup's temperature is lowered from a ...
April 28, 2011

OChem
Why would diethylammonium chloride insoluble in ether? Is the only reason why the salt is insoluble because of polarity, or are there other reasons why? Please explain.
April 27, 2011

Ochem
Diethyl ether is used as a solvent for the reaction of diethylamine with m-toluoyl chloride. Why is a solvent necessary for this reaction?
April 26, 2011

History
What is the point of this site*
April 20, 2011

History
what is the point of this class if nobody answers questions but instead says "...no one here will do your homework for you". Study guides and answers do not mean the person will plagiarize your answer. Thanks for the help anyways..
April 20, 2011

Organic Chemistry
thank you very much for the help.
April 19, 2011

Organic Chemistry
What advantages does H NMR have over melting point in the determination of purity?
April 19, 2011

physics
If you aren't used to the internet yet, maybe it's time to retire.
April 16, 2011

chemistry
P1V1= P2V2 Let P1= P1 (550mL)(P1)= (V2)(22P1) P1 Cancels Out. V2 = 550/22 mL
April 11, 2011

Chemistry
oops jk wrong one^^^ it's actually 1.4 nm.... sorry
April 11, 2011

Chemistry
The answer is 1.57 x 10^2 m/s
April 11, 2011

algebra
Create an equation of a nonlinear function and provide two inputs
April 5, 2011

algebra
i do not understand how to solve for x and y can someone please explain it to me. an example of the problem i am workin on is 6x-4y=72
April 3, 2011

Spanish
descansas tocamos practico estudias monto estudio
March 30, 2011

Spanish
can you check the accent marks. First poem No sé qué te diera, por una mirada… un mundo, por una sonrisa… el cielo, por un beso… ay no sé que te diera por un beso second poem Veo la luna y la luna ve a mí Que Dios bendiga la luna, y ...
March 30, 2011

Spanish
1.Choose the correct past participle for the Spanish verb cantar. A. canté B. cantaba C. cantado D. canto C is my answer. 2. Choose the correct past participle for the Spanish verb salir. A. salía B. salió C. salido D. sale C is also my answer. Choose the ...
March 29, 2011

Spanish
The peoms are written that way I'm just not sure of the accent marks of some words. If you can help me,that would be great and also explain the accent marks more. that would help me in future. Thanks! First poem No sé qué te diera, por una mirada… un ...
March 29, 2011

Spanish
The peoms are written that way I'm just not sure of the accent marks of some words. If you can help me,that would be great and also explain the accent marks more. that would help me in future. Thanks! First poem No sé qué te diera, por una mirada… un ...
March 28, 2011

Physics
What does the symbols u and u' stand for?
March 28, 2011

Spanish
i had to listen to an audio of these two poems and type them down. I did that part but I'm not sure of the accent marks of some words. If you can help me that would be great and also explain them to me more like do the meanings differ in the following poems ?? that would ...
March 28, 2011

Spanish
Can you please help me with this question. 1.Select the correct form for the verb escribir: He doubted the prince wrote stories for children. Dudaba que el principe __ cuentos para ninos A.escribe B.escribia C.escribiera D.escribio
March 26, 2011