Saturday

November 22, 2014

November 22, 2014

**Recent Homework Questions About First Aid**

Post a New Question | Current Questions

**Differential Equations**

Consider the spring - mass system, shown in Figure 4.2.4. consisting of two unit masses suspended from springs with spring constants 3 and 2, respectively. Assume that there is no damping in the system. Show that the displacements u1, and u2 of the masses from their respective...
*Tuesday, May 13, 2014 at 12:58pm*

**Social Studies**

1. what time was the first target hit at Pearl Harbor? Answer: 7:53 a.m. 2. Who said, "A day which will live in infamy"? Answer: President Franklin D. Roosevelt 3. Which ships were placed within 12 miles from the island? Answer: Ward, Vega, and Antares 4. What year ...
*Tuesday, May 13, 2014 at 12:37pm*

**History -- PLEASE CHECK!**

In the 1980s an alterative music form began developing in Washington State. This music, called grunge, combined elements of punk and heavy metal. Like most new bands, grunge bands started playing in small crowds and slowly became popular. Which of the following correctly ...
*Tuesday, May 13, 2014 at 7:16am*

**Ratio of two triangles**

What would the ratio be if the first triangle has sides of 4cm, 8cm, and 12cm and the second triangle had sides of 1cm, 2 cm, and 3 cm? Would the ratio be 4:1 or 1:1/4?
*Tuesday, May 13, 2014 at 12:56am*

**English**

The fire-fighters stand and watch for the first time in days. --------------- What is the meaning of 'in days'? what other expressions can use instead of 'in days'? Thank you.
*Monday, May 12, 2014 at 9:39pm*

**English**

12. What does the following quote reveal about Montressor’s intentions? "'Pass your hand,’ I said, ‘over the wall; you cannot help feeling the nitre. Indeed it is very damp. Once more let me implore you to return. No? Then I must positively leave you. ...
*Monday, May 12, 2014 at 6:35pm*

**Chemistry **

Suppose a patient is given 140mg of I−131, a beta emitter with a half-life of 8.0 days. Assuming that none of the I−131 is eliminated from the person's body in the first 4.0 hours of treatment, what is the exposure (in Ci) during those first four hours? Express...
*Monday, May 12, 2014 at 6:26pm*

**history**

1. Which factor contributed most to the beginning of the women's rights movement in the United States during the mid-1800s? A. A dramatic increase in women's participation in the workforce *** B. A shift in social attitudes brought on by increased sectional tensions C...
*Monday, May 12, 2014 at 3:46pm*

**MATH: TRIG**

IF X IS AN ANGLE IN THE FIRST QUADRANT AND COSX= 3/5, FIND THE EXACT VALUE OF SIN2X DONT UNDERSTAND, KNOW THAT THE COSX IS ON A 3,4,5 TRIANGLE
*Monday, May 12, 2014 at 3:44pm*

**English**

Can someone check the grammar in the following sentences? Thank you in advance. 1) The nuclear power station can give our town a lot of energy and jobs to people. 2) We won't be able to use the farmland near the power station because it will be polluted with chemicals. We ...
*Monday, May 12, 2014 at 2:27pm*

**Health information**

A surgeon performs elective surgery on Patrick John Smith. Smith later complains to his surgeon about pain resulting from the surgery. His surgeon dismisses his complaints as not credible and eventually withdraws from the case. Smith is then treated by another surgeon, who ...
*Monday, May 12, 2014 at 10:31am*

**Grammar - INTERJECTION**

Ho, ho! That was a good joke. Good heavens! You won the first price. Oh dear! You should not done that Bravo! You have won the prize. have you spent all your pocket money? Tut-tut! Did you break the cup. Hush! The king is going to speak
*Monday, May 12, 2014 at 9:04am*

**MATH**

1. A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most 60 hours; the second machine at most 30 hours; and the third machine at most 80 hours. The first product requires 2 hours on machine 1, 1 hour on machine 2, ...
*Monday, May 12, 2014 at 7:07am*

**chemistry**

An ideal solution of 5.00 mole benzene and 3.25 mole toluene. At 298 K, the vapor pressure of the pure benzene and toluene were 96. Torr, and 28.9 Torr, respectively. At what pressure does the vapor phase appear first, if the pressure above this solution is reduced from 760 ...
*Monday, May 12, 2014 at 5:55am*

**chemistry**

Radioactive decay is a process that follows first-order kinetics. The half-life of 32P is 0.03920 years; how long (in minutes) would it take for the amount of 32P to decrease to 53.25% of its initial amount? I don't understand at all what to do here
*Sunday, May 11, 2014 at 9:29pm*

** algebra**

The first angle of a triangle is 23° more than the 2nd angle. The 3rd angle of a triangle is 6 times the 2nd angle. Use X to represent the unknown value
*Sunday, May 11, 2014 at 2:10pm*

**Social Studies**

Briefly describe one way that these cultures changed the geography of the paces to which they migrated. 1. the ancient Romans who conquered much of Europe and England 2. homesteading families who migrated to the western territories of North America 3. American missionaries ...
*Sunday, May 11, 2014 at 1:37pm*

**physics**

A car moves along an x axis through a distance of 900 m, starting at rest (at x = 0) and ending at rest (at x = 900 m). Through the first ¼ of that distance, its acceleration is +2.25 m/s2 . Through the rest of that distance, its acceleration is – 0.750 m/s2 . Find...
*Sunday, May 11, 2014 at 12:49pm*

**chemistry, first year university**

Solid NH4N3 decomposes explosively according to the following equation: NH4N3(s) ⇌ 2N2(g) + 2H2(g) A small amount of ammonium azide was placed in a sealed container and the air was removed. The sample was then detonated. At equilibrium the total pressure in the container...
*Sunday, May 11, 2014 at 8:49am*

**Algebra**

Find the first and third quartiles of the data set. 1, 5, 1, 2.5, 3, 2, 3.5, 2, 3, 1.5, 4, 2, 4, 1, 3, 4.5
*Sunday, May 11, 2014 at 1:40am*

**chemistry**

Why is it recommended to carry out iodometric titration as quickly as positive and to get the first end point?
*Sunday, May 11, 2014 at 1:10am*

**Algebra 2**

Select the first five terms in the arithmetic sequence an=8n, starting with n=1
*Saturday, May 10, 2014 at 11:02am*

**MATHHH**

A paper bag contains a mixture of three types of treats: 12 granola bars, 10 fruit bars, and 8 cheese strips. Suppose that you play a game in which a treat is randomly taken from the bag and replaced, and then a second treat is drawn from the bag. You are allowed to keep the ...
*Saturday, May 10, 2014 at 3:52am*

**math**

Marley drives to work every day and passes two independently operated traffic lights. The probability that both lights are red is 0.35. The probability that the first light is red is 0.48. What is the probability that the second light is red, given that the first light is red?
*Friday, May 9, 2014 at 8:42pm*

**Math**

For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was 5 cents, and the number of reserved seats sold was 1/25 of the number of unreserved seats sold.If, at a second game, the price of the reserved seats is to be ...
*Friday, May 9, 2014 at 7:38pm*

**History PLEASE HELP!!!**

1. Which is a key factor that affects the climate of mountainous Latin America? (2 points) • snow • El Niño • elevation • sea breezes 2. Which statement best describes the economies of Central America? (2 ...
*Friday, May 9, 2014 at 4:19pm*

**math**

Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 84, 72, and 96. To get an B in the course, you must have an average of at ...
*Friday, May 9, 2014 at 9:07am*

**math**

Telephone company A charges $3.00 for the first minute of any long distance call and $0.50 for each additional minute. Telephone company B charges $2.00 for the first minute of any long distance call and $0.70 for each additional minute. If the cost of a call lasting x minutes...
*Thursday, May 8, 2014 at 10:37pm*

**Calculus **

Which of the following is a separable, first-order differential equation? A) dy/dx= x+y/2x B) dy/dx=x+y/x-y C) dy/dx=sinx << D) dy/dx=xy/x+y E) dy/dx= 2lnxy 2) The differential equation dy/dx=y/x^2 has a solution given by: A) y=C sqrt(x^2+4) B)y=C e^-1/x C)-1/2ex^2+C D) ...
*Thursday, May 8, 2014 at 9:20pm*

**Math**

3. What are the next three terms of the sequence 6, 12, 18, 24 a; 28, 34, 40 b; 30, ,34, 38 c; 30, 36, 44 d; 30, 36, 42 --------------------------- 14. The sale price of ground beef at a local grocery store is $1.49 for the first pond and $1.09 for each additional pound. Which...
*Thursday, May 8, 2014 at 9:04pm*

**Math - Pleeeease**

Two planes take off at a ny airport. The first plane climbs at an angle of 45 degrees with respect to the ground and reaches an altitude of 5600 feet. The second plane climbs at an angle of 60 degress with respect to the ground and reaches an altitude of 8200 feet. To the ...
*Thursday, May 8, 2014 at 8:37pm*

**Math**

1-)A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat. 2-)For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was...
*Thursday, May 8, 2014 at 8:24pm*

**Math**

36. A clock gains 20 minutes each day. if the correct time is indicated now , in how many days will it again show the first correct time? Please show work/explain A.8 B.18 C.20 D.36 E.72
*Thursday, May 8, 2014 at 5:02pm*

**math**

Andre picks a card at random. Without putting the first card back, he picks a second card at random. What is the probability that both cards will be hearts. The cards showing are three hearts and two diamonds
*Thursday, May 8, 2014 at 3:48pm*

**Social Studies**

Which of the following was likely motivation for why colonists were even sent to Australia in the first place? A. to have people from the royal family go and colonize Australia. B. to send explorers who wanted to go because of monetary incentives. C. to send convicts to an ...
*Thursday, May 8, 2014 at 2:00pm*

**Physics question help/ check my answers**

The middle two question please check my answers and tell me if I am correct or if there is something I am missing. The first and the last question I need help to understand and complete it. Thank you in advance!!! 1. What is the electric force between a +2 µC point ...
*Thursday, May 8, 2014 at 12:27pm*

**Chemistry**

Why is the first ionisation energy of chlorine greater than the first ionisation energy of Lithium ?
*Thursday, May 8, 2014 at 3:22am*

**Math 12**

One hundred tickets are sold for a raffle. Three prizes are awarded. What is the probability that Andy wins first prize, Brianna wins second, and Cam wins third? What is the probability that Andy, Brianna, and Cam are the three winners (not necessarily in that order)?
*Wednesday, May 7, 2014 at 9:12pm*

**Math**

The teacher gave this pattern to the class: the first term is 5 and the rule is add 4, subtract 1. Each student says one number. The first student says 5. Victor is tenth in line. What number should Victor say?
*Wednesday, May 7, 2014 at 6:48pm*

**MATH PLEASE HELP MRS.SUE!**

What are the next three terms in the sequence? –1, 9, 19, 29, … (1 point) 38, 37, 32 40, 51, 62 39, 49, 59 38, 47, 56 2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 ...
*Wednesday, May 7, 2014 at 5:40pm*

**math**

Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability of...
*Wednesday, May 7, 2014 at 4:58pm*

**MATH **

Please help me solve this problem. My grandfather has a big collection of silver dollars and 50 cents pieces. He promised to give one fourth of his collection to the first of his grandchildren, who can figure out the total value of his coins. The only clues he will give are ...
*Wednesday, May 7, 2014 at 2:04pm*

**chemistry **

Two solutions were prepared. The first was a 0.672 M solution of aluminum hydroxide and the second was a 0.405 M sulfuric acid solution. 1.) If a total of 500 mL of aluminum hydroxide solution was prepared, how many grams of the solute (AL(OH)3) would have been weighed out in ...
*Wednesday, May 7, 2014 at 11:14am*

**Algebra**

Write the other number or expression in terms of the given variable. A 3 foot board is cut into two pieces. If one piece measures x write the expression for the length of the other piece. Ok now I know the first term is 2x correct? where do I go from here?
*Wednesday, May 7, 2014 at 6:44am*

**Language Check 2 Ms.Sue**

Correct capitalization, punctuation, and spelling. 1. We keep a variety of emergency equipment in the trunk of our car, a first-aid kit, jumper cables, a blanket, a flashlight, and road flares. A. car a first-aid B. car: a first-aid C. car; a first-aid D. car: a 1st-aid E. ...
*Wednesday, May 7, 2014 at 1:19am*

**social studies PLEASE CHECK**

1. which is an event of the progressive era enacted by the local government in South Carolina? a. the first grange chapter was established for farmers b. the grandfather clause gave poor whites the right to vote c. blacks were disfranchises through a poll tax d. a law ...
*Tuesday, May 6, 2014 at 8:59pm*

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
*Tuesday, May 6, 2014 at 7:53pm*

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
*Tuesday, May 6, 2014 at 6:02pm*

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
*Tuesday, May 6, 2014 at 5:14pm*

**social studies**

The British attempted two invasions of America from the sea. The first one was at ? (Baltimore) and the second one at ?(New York) 2. After capturing Washington, the British attacked what city, which they failed to capture? Answer: New York, Statton Island 3. On November 7, ...
*Tuesday, May 6, 2014 at 4:57pm*

**programming**

Consider the following situation - checkout line in a counter. The details are shown as below: i. One check-out line ii. The serving time for every customer is one minute but they may have to wait in line before being served iii. The customers between zero and five will join ...
*Tuesday, May 6, 2014 at 11:57am*

**programming**

Suppose that you can select the pivot of the quick sort algorithm with three methods: you can select the first item, last item, or middle item as the pivot. Indicate the method(s) that gives the most efficient result to sort the following arrays. Note that you MUST indicate ...
*Tuesday, May 6, 2014 at 11:56am*

**Management**

A firm is assigned the network part 132.99. It selects an 11-bit subnet part. (20 pts) a) Draw the bits for the four octets of the IP address of the first host on the first subnet. b) Convert this answer into dotted decimal notation. c) Draw the bits for the second host on the...
*Tuesday, May 6, 2014 at 9:03am*

**Precalculus**

1. In an arithmetic sequence, the fifth term, u5, is greater than the first term, u1. The difference between these terms is 36. a) find the common difference 9? The tenth term of the sequence is double the seventh term . b) find u1 2.5? 2. Consider the function f(x) = ax^3 -3x...
*Monday, May 5, 2014 at 10:40pm*

**English**

The only acceptable way to divide words at the end of a line is: A. to let the computer decide. B. before the last three letters. C. between syllables. D. after the first three letters. C
*Monday, May 5, 2014 at 9:26pm*

**English (Writeacher)**

Do you think I should revise the first sentence? Also, am I using the dash properly? "Driven by sea storms, Odysseus and his men wind up upon the land of the Lotus Eaters, and three of the men are sent to retrieve information about the inhabitants of the peculiar island. ...
*Monday, May 5, 2014 at 8:51pm*

**Algebra**

In 2005, Lee invested $2000 in a fund that pays 5% interest for the first 10 years, and 8% interest for every year thereafter. What will be the value of her investment in the year 2020?
*Monday, May 5, 2014 at 5:49pm*

**Fianance**

Jake is looking at refinancing his mortgages and paying off his credit cards at the same time. Currently, his debt situation is as follows: First mortgage: 6%, 30 years due 20xx (15 years left) $269,238 Second mortgage: 8%, interest only due in 15 years $80,000 Credit cards: ...
*Monday, May 5, 2014 at 4:30pm*

**Social Studies**

Explain why you think Matthew Lyon is an important figure in American History and why he should be included in the Register. Would it be that no other American has illustrated more thoroughly than Matthew Lyon the excellence of democratic institutions in affording to every man...
*Monday, May 5, 2014 at 4:08pm*

**Physics **

Two pulleys are connected by a belt that causes one pulley to rotate (via friction) as it is driven by the first pulley. The belt turns around the pulleys without slipping on either one. rA is 10.0 cm and rB is 25.0 cm. If wheel A starts from rest and increases its rate of ...
*Monday, May 5, 2014 at 3:53pm*

**Social Studies**

Explain why you think Matthew Lyon is an important figure in American History and why he should be included in the Register. Would it be for him being the first person to be put on trial under the Sedition Act? He opposed going to war against France and objected the land tax ...
*Monday, May 5, 2014 at 3:20pm*

**English**

Back from Extinction In 2004, two biologists were canoeing in a remote part of Arkansas. They were searching for a bird that local people said was there. As the men floated along, they listened for a bird call neither had ever heard before. Then a crow-sized woodpecker flew ...
*Monday, May 5, 2014 at 2:44pm*

**English**

Back from Extinction In 2004, two biologists were canoeing in a remote part of Arkansas. They were searching for a bird that local people said was there. As the men floated along, they listened for a bird call neither had ever heard before. Then a crow-sized woodpecker flew ...
*Monday, May 5, 2014 at 1:35pm*

**math**

As compared to its first year of operation, ABC Company grew 8% in the second year and an additional 2% per year for the next two years. If total growth for years 2-4 was $45,000 over the first year’s sales of $150,000, how much did ABC Company grow in year 2?
*Monday, May 5, 2014 at 10:50am*

**probability**

two cards are drawn in succession without replacement from a standard deck of 52 cards. what is the probability that the first card is a spade given that the second card is a club. what is the probability that the first card is a face card(jack, queen, king) given that the ...
*Sunday, May 4, 2014 at 11:13pm*

**CHEMISTRY**

The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
*Sunday, May 4, 2014 at 9:43pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Sunday, May 4, 2014 at 3:43pm*

**math check probability**

5. A bag contains 7 green marbles and 4 white marbles. You select a marble at random. What are the odds in favor of picking a green marble? A. 7:11**? B. 7:4 C. 4:7 D. 3:7 ------------------------------------ 6. Food Express is running a special promotion in which customers ...
*Sunday, May 4, 2014 at 2:43pm*

**CHEMISTRY**

The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
*Sunday, May 4, 2014 at 12:12am*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Saturday, May 3, 2014 at 9:45pm*

**chemistry**

The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law constant at 20 oC ...
*Saturday, May 3, 2014 at 8:51pm*

**math**

Econocar offers two plans for one-week rentals of a compact car. A rate of $295 per week includes the first 1000 km. Extra distance costs 15 cents per kilometre. A weekly rate of $389 allows unlimited driving. Rounded to the nearest kilometre, beyond what driving distance is ...
*Saturday, May 3, 2014 at 7:53pm*

**Math**

A patio was to be laid in a design with one tile in the first row,two tiles in the second row,three tiles in the third row, and so on. Mr Tong had 60 tiles to use. How tiles should be placed in the bottom row to use the most tiles?
*Saturday, May 3, 2014 at 7:23pm*

**Algebra**

Bob drove 120 miles on his vacation. He drove an average of 1.2 times faster on the 2nd 60 miles of his trip than he did on the first half of the trip. Which expression represents the time he spend driving? Let x=his speed on the first half of the trip. • 110/x • 120...
*Saturday, May 3, 2014 at 5:45pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Saturday, May 3, 2014 at 1:56pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Saturday, May 3, 2014 at 12:41pm*

**math**

how can i plot values in a parabola graph if the values are fractions. it's my first time with this things so i don't understand
*Saturday, May 3, 2014 at 10:49am*

**physics**

Two inelastic balls of masses 2 and 3 kg are moving at the velocities 8 and 4 m/s. Find the increase of the internal energy if the first ball catches up the second one.
*Saturday, May 3, 2014 at 7:39am*

**business**

Within an organization, the first step in human resources planning is?
*Saturday, May 3, 2014 at 12:04am*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Friday, May 2, 2014 at 7:09pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Friday, May 2, 2014 at 6:21pm*

**Fitness And Nurition**

Greetings! I did my homework, but I don't know if my answers are right or not. I wanted to know if you can help. My answers will be with a * beside it. 1. Which one of the following choices is a mental symptom of distress? A. Memory loss B. High self-esteem C. ...
*Friday, May 2, 2014 at 5:54pm*

**chemistry**

Construct a galvanic (voltaic) cell from the half reactions shown below. Au3+ + 3 e- → Au (s) ξo= 1.420 V Br2 (l) + 2 e-→ 2 Br- (aq) ξo= 1.087 V Calculate the equilibrium constant (K) for this cell. Assume that the temperature is 298K. First, consider ...
*Friday, May 2, 2014 at 4:46pm*

**math 1 question pls help asap!!!**

Find the first four terms of the sequence represented by the expression. 3n + 5 (1 point) 5, 8, 11, 14 8, 11, 14, 17*** 3, 6, 9, 12 0, 8, 11, 14
*Friday, May 2, 2014 at 4:12pm*

**math**

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 *** The sequence is neither geometric nor arithmetic. 2. –4, 8, –16, 32...
*Friday, May 2, 2014 at 3:36pm*

**math 1 question pls help!!!**

6. Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the experimental probability...
*Friday, May 2, 2014 at 2:16pm*

**History**

The First Amendment right to freedom of religion was central in deciding the outcome to what trials?
*Friday, May 2, 2014 at 11:34am*

**Physics/Calculus**

It takes a force of 21,714lb to compress a coil spring assembly on a New York City Transit Authority subway car from its height of 8in to its fully compressed height of 5in. A. What is the assemblys force constant? B. How much work does it take to compress the assembly the ...
*Friday, May 2, 2014 at 9:43am*

**Calculus**

An electric elevator cable with a motor at the top has a multistrand cable weighing 4.5lb/ft. When the car is at the first floor, 180ft of cable are pulled out, and effectively 0ft are out when the car is at the top floor. How much work does the motor do just lifting the cable...
*Friday, May 2, 2014 at 9:41am*

**College Algebra & Trigonometry**

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight is pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=2cos(5ðt+ð/3). Find the first two times for which the ...
*Friday, May 2, 2014 at 4:03am*

**History8**

In Westside Community Schools v. Mergens, the Supreme Court ruled in favor of the __________, stating that it was a violation of __________. A.principal . . . church and state B.students . . . their First Amendment rights C.students . . . their patriotic rights D.principal...
*Thursday, May 1, 2014 at 6:11pm*

**Asap science check my answer plz?!**

Fill in the Blank: 14. The energy role of the first organism in a food chain is always a(n) ___________. A: Producer 15. Water is a(n) __________ factor in all ecosystems that all living things require. A: Abiotic 16. ___________bacteria carry out the conversion of gaseous ...
*Thursday, May 1, 2014 at 5:46pm*

**Survey Math help**

A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Would I do specific ages the first 100 randomly picked ...
*Thursday, May 1, 2014 at 2:44pm*

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*Thursday, May 1, 2014 at 11:44am*

**Help Ms.Sue!!! Social Studies**

1. How does the Israeli-Palestinian conflict most directly affect the daily lives of young people in Jerusalem a. civilian violence b. peace talks c. international negotiations d. political parties ( my answer) 2. which is the best location for farming? a. east of the jordan ...
*Thursday, May 1, 2014 at 10:56am*

**College Algebra and Trigonometry **

A weight is attached to an elastic spring that is suspended from a ceiling. If the weight s pulled 1 inch below its rest position and released its displacement in inches after t seconds is given by x(t)=(5pt+p/3. Find the first two times for which the displacement s 1.5 inches...
*Wednesday, April 30, 2014 at 11:40pm*

**accounting**

Meranda Corporation purchases a machine for $125,000. It has an estimated salvage value of $10,000 an is expected to produce 50,000 units in its lifetime. During the first year of operation, it produced 14,500 units. To the nearest dollar, the depreciation for the first year ...
*Wednesday, April 30, 2014 at 11:06pm*

**statistics**

A researcher was interested in assessing the effectiveness of the Statistics Diet as compared to a regular low calorie diet on weight loss. In the study, obese participants were randomly assigned to one of two groups: (1) the Statistics Diet, which required participants to ...
*Wednesday, April 30, 2014 at 9:20pm*

**math (3)**

Evaluate the first partial derivatives of the function at the given point.(0,e) f(x,y) = 6e^x ln(y) fx(0,e) = ? fy(0,e) = ?
*Wednesday, April 30, 2014 at 8:29pm*

**math (2)**

Find the first partial derivatives of the function. f(x,y,z) = xe^(y/z) a. fx = ? b. fy = ? c. fz = ?
*Wednesday, April 30, 2014 at 8:24pm*

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