Wednesday

November 26, 2014

November 26, 2014

Total # Posts: 2,481

**physics**

Suppose the roller coaster in Fig. 6-41 (h1 = 38 m, h2 = 11 m, h3 = 25) passes point 1 with a speed of 1.60 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point 2? The distance traveled is 45.0 m.
*November 29, 2012*

**precalc/trig**

olve for the interval [0, 2pi]. cos(x+ pi/4)+cos(x- pi/4)=1
*November 29, 2012*

**algebra**

A store manager bought c calculators for $8. All but four were sold for $10 each. The remaining four calculators were not sold. Find the store's profit, in simplified form, in term of c.
*November 27, 2012*

**Algebra**

I solved the problem like that: Sara: 2x Miguel: x 2x+6 =4/3x 18/3 =4/3 -6/3x 6 = -2/3x x = - 9 so Miguel = -9 Sara = -18 Is it correct?
*November 27, 2012*

**Algebra**

Sara has twice as much money as Miguel. If she had $6 more. She would have 4/3 as much money as he has. How much money does each have now?
*November 27, 2012*

**Physics**

An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?
*November 21, 2012*

**Math**

A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?
*November 17, 2012*

**Math**

A pizza shop tried 45 new type pizza during the past year and 20% percent of them became popular. Which best represents the fraction of pizzas that did not become popular?
*November 17, 2012*

**Chemistry**

Br7C
*November 17, 2012*

**Physics**

The diagram below shows a large cube of mass 25 kg being accelerated across a frictionless level floor by a horizontal force, F. A small cube of mass 4.0 kg is in contact with the front surface of the cube. The coefficient of static friction between the cubes is 0.71. What is ...
*November 15, 2012*

**probability**

The digits 2, 3, 4, 7, and 8 are each used once in a random order to form a five-digit number. What is the probability that the resulting number is divisible by 4? Express your answer as a common fraction.
*November 15, 2012*

**math**

I look at a random time of day at a digital clock (that shows times from 1:00 through 12:59). What is the probability that (ignoring the colon) I see a palindrome such as 8:08? Express your answer as a common fraction.
*November 15, 2012*

**Calculus**

A wire 4 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...
*November 14, 2012*

**MATH**

L=2 H=1
*November 14, 2012*

**Math**

isn't x,y above just -4,-6 ? what do i do with the distance formula?
*November 14, 2012*

**Math**

Find the point on the line 1x+7y-4=0 which is closest to the point (-4,-6)
*November 14, 2012*

**Social Studies**

If I could have some help on this question I'd appreciate it.I think the answer is B. Which problem would most likely result if banks did not exist? (1 point) People would no longer be able to save money. Money would not move through the economy very well. Spending money ...
*November 9, 2012*

**English**

I have to choose which word "neatly" is describing. If neatly is an adverb would it be describing packed? everything owned packed boxes I saw that everything we owned was neatly packed in cardboard boxes.
*November 9, 2012*

**physics**

tell me
*November 8, 2012*

**Social studies**

Does Inca, Maya, or Aztecs have no central government?
*November 8, 2012*

**algebra**

there is a circular tank with diameter 7 min a garden. what will be the cost of fixing fountain pipe all around the tank at the rate of $5 per meter
*November 7, 2012*

**english**

Identify the italicized word according to its class in structural linguistics. (There) are no easy answers.
*November 7, 2012*

**Chemistry**

Given the information below, calculate the heat provided by combustion of 66.1g of propane (C3H8). ΔHf° (C3H8(g)) = -103.85 kJ ΔHf° (CO2(g)) = -393.5 kJ ΔHf° (H2O(ℓ)) = -285.8 kJ Can Someone explain this in detail? i have to answer this type of...
*November 6, 2012*

**Math for Steve**

None of you are right. Eat it !
*November 6, 2012*

**english 2 **

Neither pesticides nor hormones are used in the production of organic foods. Is there any mistakes here ?
*November 6, 2012*

**math**

I need to use calculus to solve this word problem: Find all maximum and minimum values for f(x)= sin(x)+ cos(x) on [0, 2(3.14)] How do I do it?
*November 4, 2012*

**math**

Carman wants to cut 3/4 inch peices from 62 long inch wire. How many 3/4 inch peices will she have?
*October 30, 2012*

**Physics**

2,3,4
*October 30, 2012*

**math problem**

In the multiplication probelem at the right,A,B,C represent different non-zero digits. Each time the same letter appears it represents the same digit. Find the 2 numbers represnted by AA and BC.(0 is zero). A A x B C ------ B B O A A ----- 6 6 0
*October 27, 2012*

**math problem**

In the multiplication at the right,A,B,C represent different non-zero digits. each time the same letter appears it presents the same digit. Find the 2 numbers represnted by AA and BC.(0is zero). A A x B C ------ B B O A A ------- 6 6 0
*October 27, 2012*

**math problem**

Two large containers each contain the same amount of juice. When 54oz. of the first container are poured into the second container, the second container has 4 times as much juice as the first container. How many ounces of juice did the first container originally have?
*October 27, 2012*

**Math problem**

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give $21,000 in exchange for 1/3 of the stock. The $21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...
*October 27, 2012*

**Physics help**

1.)166.67N 2.)83.333N
*October 26, 2012*

**math homework**

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?
*October 25, 2012*

**math homework**

Mr. Burton rides out into the country on his bicycle at 9 mph . Four hours later he starts back riding his bicycle at 6 mph. How long will it take him to get back?
*October 25, 2012*

**math homework**

The whole number are written across a piece of paper in order. There is room for 100 digits on each line and there are no spaces between each digit. What are the last 5 digits on the second line? 0123456789101112.......
*October 25, 2012*

**science**

I have made a thermometer which measures temperature by the compressing and expanding of gas in a piston. I have measured that at 100 degrees C the volume of the piston is 20 L. What is the temperature outside if the piston has a volume of 15 L? What would be appropriate ...
*October 25, 2012*

**Math **

Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?
*October 24, 2012*

**math homewok**

There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2 quarters+i nickel Is ...
*October 24, 2012*

**math 7 grade**

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?
*October 24, 2012*

**math 7 grade**

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get $1 . Each charity in the 2 nd. group will get 9 times as much or $9 . Each in the 3 rd. will get 9 times as much as each in the 2 nd. groups or $...
*October 24, 2012*

**statistics**

28
*October 24, 2012*

**statistics**

47
*October 24, 2012*

**physics**

518.94 J
*October 24, 2012*

**Math**

A cattle train left Miami and traveled toward New York. 14 hours later a diesel train left traveling at 45km/h in and effort to catch up to the cattle train. After traveling for four hours the diesel train finally caught up. What was the cattle train's average speed?
*October 23, 2012*

**ap chemistry **

Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO + O2 yields 2CO2 Delta H for this reaction is -135.28 kcal. If 811.7 kcal is released, how many moles of CO must have reacted? 1). 270.5 mol 2). 40.5 mol 3). 12.0 mol 4). 5.41 mol 5). 16.3...
*October 18, 2012*

**Algebra**

"If 3 people can do a job in 5 days, how many days will be needed if 4 people do the same job?"
*October 16, 2012*

**physics**

In a Broadway performance, an 80 kg actor swings from a 3.75 m long cable that is horizontal when he starts.? At the bottom of his arc, he picks up his 55.0 kg costar in an inelastic collision. What maximum height do they reach after their upward swing?
*October 16, 2012*

**math**

i am a 3-digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3
*October 15, 2012*

**SOC 101**

soc 101 In most developed nations health care is?
*October 13, 2012*

**biology**

what is the relationship between interactions and interdependence
*October 13, 2012*

**physics 100**

Bob, who has a mass of 60 , can throw a 800 rock with a speed of 26 . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 . a) What constant force must Bob exert on the rock to throw it with this speed? b)If Bob is...
*October 13, 2012*

**science**

if 25 ml of sugar is mixed with 299 ml of water and then 50 ml of water is poured out, how much sugar remains in the 150 ml of wtare?
*October 10, 2012*

**statistics**

The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data is more likely to follow normal distribution? Why?
*October 10, 2012*

**Science **

How many grams of ammonium nitrate is equivalent to 1 gram of calcium nitrate
*October 9, 2012*

**english**

oiasdhoashduashdasuhdaiuhdiusahdiusadhuaisdhuisahdaisudhaiushd
*October 9, 2012*

**7th grade masth asap hurry plz ms.sue somebody plz**

My gosh really Anonymous WOW what a freaking snitch she wasn't asking for the answer she was asking how to do it and you know what I'm guessing you Google searched the answer because why else would you be here and heck even if she was cheating i bet you she's ...
*October 8, 2012*

**physics**

12.54
*October 4, 2012*

**physics**

If a car is traveling at a constant speed of 15 meters per second, goes off a cliff, and needs to land 100 meters from the cliff, how high is the cliff?
*October 4, 2012*

**math**

Suppose that you have $12,500 to invest over a 4 year period. There are two accounts to choose from: 4.5% compounded monthly or 4.3% compounded continuously. a. Write the formula for the first account’s compound interest for n compounding per year. b. Write the formula ...
*October 3, 2012*

**math**

The Concord Community Park Association receives a $10,000 donation from an anonymous donor who stipulates that before using the funds to improve the park, they must invest the money until it has doubled in value. The Park Association decides to invest the money in an account ...
*October 3, 2012*

**math**

China .8% Ethiopia 2.8%
*October 3, 2012*

**chemistry**

Nitric acid reacts with silver metal: 4HNO3 + 3Ag -> NO + 2H2O + 3AgNO3. Calculate the number of grams of NO formed when 10.8 g of Ag reacts with 12.6 g HNO3
*October 2, 2012*

**history**

What are three good points to talk about in a research paper about child labor in the 1800s? 10th grade level please.
*October 1, 2012*

**7th grade math help quick please**

you go to connctions academy cheater!
*October 1, 2012*

**pyshic**

A car has a mass of 1.35 × 103 kg. If the force acting on the car is 6.82 × 103 N to the east, what is the car’s acceleration? Answer in units of m/s2
*September 30, 2012*

**yolo**

gajkwh;reg
*September 30, 2012*

**physics**

a toy car runs off the edge of a table that is 1.225 m high. if the car lands .400 m from the base of the table (A) how long does it take for the car to fall and (B) what is the horizontal velocity of the car?
*September 30, 2012*

**7th grade math questions Scientific Notation**

GIVE ME A D E R P DERP!
*September 28, 2012*

**7th grade math - Scientific Notation basics**

HEY YOU GO TO CONNECTIONS ACADEMY! this is cheating
*September 27, 2012*

**math**

I am a number between 50 and 60.One of my factors is 28.What number am I?
*September 24, 2012*

**us history**

what do the following have in common? indentured servants indigenous slaves
*September 23, 2012*

**us history**

Which of the following is not like the other? Cortes, Pizarro, Champlain, and Ponce de Leon
*September 23, 2012*

**physics**

The pilot of an aircraft wishes to fly due west in a 42.7 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h.
*September 23, 2012*

**chemistry**

what is the name of the compound C2H4?
*September 22, 2012*

**chemistry**

what is name of the compound P2S5? is it phosphorous pentasulfide?
*September 22, 2012*

**chemistry**

chemical formula for potassium hydrogen sulfide? is it KHS?
*September 22, 2012*

**Physics**

A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...
*September 21, 2012*

**Physics**

A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s ...
*September 21, 2012*

**History**

What is moral law? What is civil law? Contrast the both. can someone name me anything relating to those from current events or historical events?
*September 20, 2012*

**LA**

Why are you saying thank you?
*September 20, 2012*

**LA**

what links the subject of the sentence with a description of the subject?
*September 20, 2012*

**Chemistry**

A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was precipitated. Calculate the ...
*September 20, 2012*

**Social studies **

Why did mound builders build burial mounds
*September 19, 2012*

**Science**

Poop
*September 19, 2012*

**Algebra 1**

poop
*September 18, 2012*

**Science**

thank you
*September 18, 2012*

**Science**

I need an acrostic for RESPIRATION. Please help!!
*September 18, 2012*

**physics**

In baseball, a pitcher can accelerate a 0.15 kg ball from rest to 99 mi/h in a distance of 1.4 m. What is the average force exerted on the ball during the pitch?
*September 17, 2012*

**chemistry**

1. From Thomson's work, which subatomic particle do you think he would feel are most important for the formation of compounds? Why? 2. Of the remaining two other kinds of subatomic particles, which do you think would take second place in importance? Why? 3. Give three ...
*September 17, 2012*

**Math Studies IB**

I am trying finding whether men or women have better memory. I would like to do a chi-squared test, how would i lay it out and What other sophisticated processes can i do?
*September 17, 2012*

**physics**

A vector has a magnitude of 17.6 cm and makes an angle of 150.0° with the positive x-axis. What are the x- and y-components of this vector?
*September 16, 2012*

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob
*September 16, 2012*

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob
*September 16, 2012*

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob
*September 16, 2012*

**chemistry**

Thank you Dr.! So sorry, I typed a slash instead of an l; too many hours at this. In looking at this, i get it now. Thank you for such a complete answer. Bob
*September 16, 2012*

**chemistry**

I am stuck in the following in my homework. BaC/2 and Na2CO3 turns different colors when the same indicator is added to each? Why does this happen? How is the ph of each of these different? I have tried on this one and cannot get it. Thanks for our help. Bob
*September 16, 2012*

**Chemistry**

jk
*September 16, 2012*

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