Wednesday

July 1, 2015

July 1, 2015

**Organic Chemistry**

Hi, I did an extraction experiment. I've got my basic layer, and getting my acidic salt in return. To do this, I am instructed to first "add a small amount of NaCl to help with the product precipitation". Then, again I am instructed to add HCl to "acidify&...
*Monday, November 3, 2014 by Juan*

**English**

Is this a good introductory paragraph for a persuasive essay? If not, can you help change it or add on to it? Everyday people come in contact with illegal aliens in some way or form but they just don't it. Often it is hard to tell because an illegal alien may look like the...
*Monday, November 3, 2014 by Amy*

**Algebra **

If h(y)=1+y/2-y, then what is the value of h^-1(5)? Express your answer in simpilest form. The first step would be to find the inverse of the 1+y/2-y which would be 2y-xy I think, and then would we plug in 5 for x or y?
*Monday, November 3, 2014 by Trish Goal*

**Algebra **

Let p(x)=2x^3-113 and let q be the inverse of p. Find q(137). Please explain in steps. I posted this already but I did not list my steps. The first step would be to find the inverse of 2x^3-113 which would be: y=(x+113/2)^1/3. and then would I just plut in 137 for x?
*Monday, November 3, 2014 by Trish Goal*

**Algebra **

If f(x)=x^5-1/3, find f^-1(-31/96). I think the first step would be to find the inverse of -31/96, but I am not sure how to find that :). Then I could make x^5-1/3= the inverse of -31/96.
*Monday, November 3, 2014 by Trish Goal*

**physics**

Please Help The human outer ear contains a more-or-less cylindrical cavity called the auditory canal that behaves like a resonant tube to aid in the hearing process. One end terminates at the eardrum (tympanic membrane), while the other opens to the outside. (See the figure (...
*Monday, November 3, 2014 by chiongo*

**math**

Gloria talked on her cell phone for 320 minutes the first month, 243 minutes the second month, and 489 minutes the third month. Her payment package does not allow her to pay per minute; she can only buy groups of minutes. If she has to pay $25 for every 200 minutes, how much ...
*Monday, November 3, 2014 by Lakshmi*

**physics**

Please help I cant breath with this qn, due today exam pending, thanks for taking your time to help. The human outer ear contains a more-or-less cylindrical cavity called the auditory canal that behaves like a resonant tube to aid in the hearing process. One end terminates at ...
*Monday, November 3, 2014 by chiongo*

**English**

1. How can you know what you want to be? 2. First, think about what you want to do. ---------------- In each sentence, what is the part of speech of 'what'? a) an interrogative pronoun b) a relative pronoun containing the antecedent 3. How can you know the thing which ...
*Monday, November 3, 2014 by rfvv*

**Language Arts 8A**

Please help me by checking these answers. It would really help me because I need to get my grade up. I star my answers. 1. When MacNeil asks, "When before human history has so much humanity collectivity surrendered so much of its leisure to one toy, one mass diversion?&...
*Monday, November 3, 2014 by Emmy*

**History**

14. Which statement best describes Georgia as a royal colony? (1 point) A. Georgia was ruled directly by the king through one of his royal governors. B. Georgia was ruled directly by the king through a council of elected officials. C. Georgia was ruled by an elected ...
*Monday, November 3, 2014 by Help*

**Business maths**

What minimum amount will have to be deducted today to a fund earning 8.7% compounded quarterly, if the first quarterly payment of $6000 in perpetuity is to occur three months from now. Do not round intermediate calculations, just round the final answer to 2 decimal places
*Monday, November 3, 2014 by aiman*

**physics**

Arann launches a rock into the air such that it rises 20.0 m in the first third (time wise) of its ascent to maximum height. Determine the rock's maximum height and launch speed. Determine the time(s) at which the ball is at a height of 10m. PLEASE HELP
*Sunday, November 2, 2014 by Isabelle*

**Algebra 2**

Telephone numbers are made of 7 digits. Digits can be repeated but the first digit cannot be 0 or 1. How many different telephone numbers can be created? I believe you use combination function, but I am not sure how and where.
*Sunday, November 2, 2014 by John*

**work with parents and families**

The tone of the parent-caregiver relationship is set by the A. home visit. B. initial facility visit. C. brief chats at arrival and departure times each day. D. child's first day. C.
*Sunday, November 2, 2014 by Amanda*

**Algebra check?**

Sorry the first post formatted weirdly. 1. 3i - 10 --------- 8i - 5 Answer 74 65i ---- + ----- 89 89 2. 11i^2 + 1 ------------ -12i - 8 Answer: 5 (2 - 3 i) ------------- 26 3. square root -25 * 8 square root -49 Answer: -280 4. square root -64 + 12 square root -36 Answer: 80 i...
*Sunday, November 2, 2014 by John*

**science**

This year for my science fair project I will be testing to see if music affects a person's blood pressure. I will have a participant get relaxed (for 5 minutes). After he/she is relaxed, I will take his/her blood pressure with a digital sphygmomanometer (instrument used to...
*Sunday, November 2, 2014 by Anonymous*

**science**

This year for my science fair project I will be testing to see if music affects a person's blood pressure. I will have a participant get relaxed (for 5 minutes). After he/she is relaxed, I will take his/her blood pressure with a digital sphygmomanometer (instrument used to...
*Sunday, November 2, 2014 by Meylin*

**essay edit**

Can someone look over this? I've been working on wordiness, sentence structure, and repetition. Tangled and its Hidden Critique of Rapunzel Peeking at the mere surface of the film Tangled (2010) directed by Nathan Greno and Brian Howard, most would presume that it is ...
*Sunday, November 2, 2014 by christine*

**physics**

A bus moves from rest with a uniform acceleration of 2ms(square)for the first 10s.
*Sunday, November 2, 2014 by marine*

**Physics**

Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 328 N, is applied at an angle α = 35° to the forward dashed line. The second force, F2 = 464 N, is applied at an angle β = 13° to the forward dashed line. (a...
*Sunday, November 2, 2014 by akash*

**essay excerpt edit**

can someone edit this? To contrast, in the film Tangled (2010) the mother of Rapunzel, who is exhibited as a Queen, also falls ill, although it is due to legitimate medical ailments, as opposed to a sense of helplessness. She is then limited to a bedridden state while pregnant...
*Sunday, November 2, 2014 by christine*

**physics**

An m=150 g block hits an M= 265 g block initially at rest on a horizontal surface. After impact they stick together and slide 7.47 m before coming to rest. The coefficient of friction between blocks and surface is 0.39. a) What is in m/s the speed of both blocks immediately ...
*Saturday, November 1, 2014 by Serena*

**Calculus**

The blood alcohol concentration after a drink has been consumed can be modelled by c(t)=(0.02t)e^(−0.05t) where t is the time in minutes elapsed after the consumption of the drink and c(t) is the concentration in mg/mL at t. At what time in the first hour after consuming...
*Saturday, November 1, 2014 by Anonymous*

**English**

Bill didn't wear gloves as he made a snowman. => His hands got very cold. ------------------------------ In the first sentence, what does 'as' mean? Does 'as' mean 'when' or 'because'?
*Saturday, November 1, 2014 by rfvv*

**physics**

An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air, fresh water, and a slender metal handrail. The speeds of sound in air, water, and the handrail are 356, 1460, and 5400 m/s, respectively. The sound ...
*Friday, October 31, 2014 by danon*

**sociology**

Mattie is a new sociology professor at the local college. During her first lecture, she noticed that some students were yawning. Based on her interpretation of the students yawning, Mattie has decided she is a boring teacher. This is an example of the process referred to as ...
*Friday, October 31, 2014 by sam*

**S.S.**

4. Among the legislative acts passed during Franklin Roosevelt’s first term as president, which one gave relief to artists, actors, and writers? A. National Recovery Administration B. Tennessee Valley Authority C. Works Progress Administration D. Civilian Conservation ...
*Thursday, October 30, 2014 by Sarah*

**math**

there are 6 purple socks and 4 orange socks in a drawer. zucky picked one sock without looking and then another without looking or replacing the first. what is the probability that he picked 2 purple socks?
*Thursday, October 30, 2014 by Kosrae High School*

**Math/Physics**

My question is this: The potential at the surface of a sphere (radius R) is given by V_0 = k cos 3theta where k is constant. Find the potential inside and outside the sphere as well as the surface charge density (lower case sigma(theta)) on the sphere. (assume there is no ...
*Thursday, October 30, 2014 by Kim*

**Science**

What is the centripetal force on a vehicle rounding a circular curve with a radius of 80m at a constant speed of 90 km/h if the vehicles mass is 2,000 kg? (Hint: first express the velocity in meters per second) A: 20,250 N B: 703 N C: 625 N D: 15,625 N
*Thursday, October 30, 2014 by Lyndsey*

**social studies**

Which of the following is Not a reason why Americans won the war, despite having many disadvantages compared to Britain? A. the Americans had the advantage of fighting in their own land. B. aid from France and Spain was important to american success. C. the British depended to...
*Thursday, October 30, 2014 by starlene*

**math**

Find the first arithmetic mean between 100 and 135 given the following sequence: ..., 100, ___, ___, ___, ___, 135, ... A. 107 B. 114 C. 121 D. 128
*Wednesday, October 29, 2014 by jax*

**Science - Please Check My Written Answer**

Please help me with the following: Briefly explain why experiments having faulty design or inconsistent data are problems for scientists. List several reasons. There are several reasons that experiments with faulty designs or with inconsistent data are problematic for ...
*Wednesday, October 29, 2014 by Brady*

**geometric progretion**

the 6 term of a G.p is 2000 find its first term if its ratio is 10
*Wednesday, October 29, 2014 by sunday*

**science**

the 6 term of a G.P is 2000 its common ratio is 10 find the first term?
*Wednesday, October 29, 2014 by sunday*

**Science**

When evolution was first proposed, which of the following was used as evidence to support the idea? 1.observations of nature 2.laboratory experiments 3.extensive fossil collections 4.genetic sequences I think its either 1 or 4
*Wednesday, October 29, 2014 by Jessica*

**World History Answer Check (Ms. Sue)**

1. Why were there rebellions in China after General Yuan Shigai become president? A: There were rebellions in China after General Yuan Shigai became president because Yuan's dictorial ways and efforts led to conflict with Su Yat-sen's Nationalist Party. 2. What effects...
*Wednesday, October 29, 2014 by Victoria *

**Math**

Is the following statement always, sometimes, or never true for numbers greater than zero: "In equivalent ratios, if the numerator of the first ratio is greater than the denominator of the first ratio, then the numerator of the second ratio is greater than the denominator...
*Tuesday, October 28, 2014 by Willie*

**Writing- grade 4**

Write a personal narrative about something happened to you when you were young. I when I was young and didn't walk on my feet. I was in my bed , I stood up and I put my hand on the edge of the bed so that it doesn't fall,but dropped it,and my dad took me from the ...
*Tuesday, October 28, 2014 by Noo*

**physics**

What is the velocity of a baseball thrown 40m from third base to first base in 1.9s? Show your work, and simplify please.
*Tuesday, October 28, 2014 by Sabrina*

**math**

Jenny is remodeling her bathroom floor. She is going to use tile that is 3/4 foot long. If her bathroom is 7 1/3 feet long, how many tiles will she need to first cover the length of the bathroom?
*Tuesday, October 28, 2014 by Kia*

**S.S.**

1. Which of the following is true of the Hay-Bunau-Varilla Treaty? A. It granted the United States a canal zone in the Isthmus of Panama. B. It laid out the terms for the purchase of Panama from Colombia. C. It was intended to restore friendly relations between the United ...
*Tuesday, October 28, 2014 by Sarah*

**History**

4. South Carolina responded to the Intolerable Acts by __________. (1 point) holding small “tea parties” in Charles Town and Georgetown sending representatives to the First Continental Congress drafting a state constitution and setting up a new government boycotting ...
*Tuesday, October 28, 2014 by Anonymous*

**Physics**

Two thin slits with separation of .0250mm are placed over monochromatic orange laser light at 610.nm. What is the small angle measurement from the central maximum (zero degrees, inline with the source) to the first maximum? I thought in order to solve this is would be sin^-1(y...
*Tuesday, October 28, 2014 by Ebari*

**Physics Light Diffraction **

A single monochromatic indigo light source is shined through an etched, flat prism with a slit separation of .0250mm. the resulting interference pattern is viewed on a screen 1.25 m away. the third Maximum is found to be 6.6 cm from the central maximum. What is the wavelength ...
*Tuesday, October 28, 2014 by Ebari*

**Math: Statistics**

1. A regression analysis includes the effect of Age, which is categorised into five levels. How many dummy variables should be defined for including it in the analysis? 2. A regression analysis includes Sex as an explanatory variable. How many dummy variables are required to ...
*Tuesday, October 28, 2014 by Penny*

**Finance **

Your company is considering diversifying its investment in financial securities into both stocks and bonds. You are asked to evaluate the following alternatives and make your recommendations as to the securities that your company should select. Bonds: There are several bonds ...
*Monday, October 27, 2014 by Fik*

**English**

On following sentence the first clause is a dependent clause. The second clause is an independent clause which can stand by itself. Before President Roosevelt died, President Truman did not know that the United States was developing atomic weapons. I say No Noun Clause. My ...
*Monday, October 27, 2014 by Karen*

**Physics**

The atomic mass of a nitrogen atom (N) is 14.0 u, while that of an oxygen atom (O) is 16.0 u. Three diatomic gases have the same temperature: nitrogen (N2), oxygen (O2), and nitric oxide (NO). Rank these gases in ascending order (smallest first), according to the values of ...
*Monday, October 27, 2014 by Bobby *

**S.S. To Ms.Sue**

7. What new concept became popular with department stores? A. Electricity B. Advertisements C. Using Credit D. Browsing 15. In the first major pioneering movement, settlers made their way to Oregon and California by way of the _______ Trail. A. Kearny B. Overland C. California...
*Monday, October 27, 2014 by Sarah*

**Physics**

Two thin slits with separation of .0250mm are placed over monochromatic orange laser light at 610.nm. What is the small angle measurement from the central maximum (zero degrees, inline with the source) to the first maximum?
*Monday, October 27, 2014 by Eiban*

**Physics-Light**

light diffraction help? a single monochromatic indigo light source is shined through an etched, flat prism with a slit separation of .0250mm. the resulting interference pattern is viewed on a screen 1.25 m away. the third Maximum is found to be 6.6 cm from the central maximum...
*Monday, October 27, 2014 by Eiban*

**Physics**

A car, moving along a straight stretch of highway, begins to accelerate at 0.0235 m/s 2 It takes the car 67.8 s to cover 1 km.How fast was the car going when it first began to accelerate?
*Monday, October 27, 2014 by Anonymous*

**math**

A florist had an equal number of red and yellow tulips. She sold 624 red tulips. Then she had 4 times as many yellow tulips as red tulips. How many tulips did she have at first. 624 X 5 ----- 3120
*Monday, October 27, 2014 by matthew*

**college algebra**

Using a phone card to make a long distance call costs a flat fee of $0.80 plus $0.33 per minute starting with the first minute. Write a function for the cost of a long distance call C(x) in terms of x minutes for this situation.
*Monday, October 27, 2014 by shaudee*

**Corporate Finance**

Your company is considering diversifying its investment in financial securities into both stocks and bonds. You are asked to evaluate the following alternatives and make your recommendations as to the securities that your company should select. Bonds: There are several bonds ...
*Monday, October 27, 2014 by Fik*

**Fractions**

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of what was left and 3/4 ...
*Sunday, October 26, 2014 by Natalie*

**Fractions**

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of what was left and 3/4 ...
*Sunday, October 26, 2014 by Jessica*

**Mathematica**

I am trying to write a matrix where n=100, and the matrix's first and last number is 2 and all the number in the middle are 1.
*Sunday, October 26, 2014 by Ashley*

**Fractions Math**

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of what was left and 3/4 ...
*Sunday, October 26, 2014 by Anonymous*

**Math**

Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of what was left and 3/4 ...
*Sunday, October 26, 2014 by Jessica*

**General Chemistry**

We mix 112 grams of oxygen gas with 118 grams of argon gas in a volume of 1752 mL at 74 degrees celsius. What will be the final pressure of the gas mixture? First, I converted the grams into moles. 112g O2 * (1mol O2/ 32g O2) = 3.5 moles O2 118g Ar * (1mol Ar/ 40g Ar) = 2.95 ...
*Sunday, October 26, 2014 by Sabrina*

**calculus**

a. find an equation for the secant line through the points where x has the given values. b. find a equation for the line tangent to the curve when x has the first value. y=9square root(x); x=16, x=25
*Sunday, October 26, 2014 by Duane*

**Algebra 1**

Andrew is making a plan to complete a class math assignment. He has 48 problems to complete over 5 days. He decides to complete the assignment is such a way that his total number of completed problems doubles every day. He realizes that that number must be 48 by the end of ...
*Sunday, October 26, 2014 by Halle *

**english**

how can i describe a plane crash using imagery in first person point of view ?
*Sunday, October 26, 2014 by liam*

**Math**

The data shows the total number of employee medical leave days taken for on-the-job accidents in the first six months of the year: 16, 7, 23, 9, 25, 16. Find the standard deviation.
*Saturday, October 25, 2014 by Anonymous*

**College Algebra **

Suppose a major league baseball player has hit 7 home runs in the first 16 games, and he keeps up this pace throughout the 162-game season. (a) Express the number y of home runs in terms of the number x of games played. (b) How many home runs will the player hit for the season...
*Saturday, October 25, 2014 by Ashton*

**Fundamental engineering principles **

A car traveling at 108 km hr-1 deceleration uniformly from 108 km hr-1 to 72 km hr-1whilst covering 200m.it continues at this reduced for 150m before slowing down uniformly to rest over a distance of 225m. Draw the velocity-time diagram and use it to determine: (A)the total ...
*Saturday, October 25, 2014 by Anonymous*

**physics**

A ball is dropped from the top of a building. The balls fall 3 times farther during its last second of freefall than it did during its third second of freefall. The ball fell 4.9 meters during its first second, how tall is the building and how much time is the ball in the air...
*Saturday, October 25, 2014 by hi*

**math**

2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can recieve chocolate? 13 17 19 21 3.which of these numbers is not rational? square root 3 0.25 1/5 square root 9 4. a student's work to solve 2 6/7 ...
*Saturday, October 25, 2014 by kathy*

**math**

2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can recieve chocolate? 13 17 19 21 3.which of these numbers is not rational? square root 3 0.25 1/5 square root 9 4. a student's work to solve 2 6/7 ...
*Saturday, October 25, 2014 by kthy*

**Math**

f(x)=3x^2-x-2 If x=2, what is f(x)? What point is on the graph of f? For the first question, I got 8. But, I'm having trouble understanding the second question.
*Saturday, October 25, 2014 by Anonymous*

**physics**

To determine an athlete's body fat, she is weighed first in air and then again while she's completely underwater. It is found that she weighs 690 N when weighed in air and 36.0 N when weighed underwater. What is her average density?
*Saturday, October 25, 2014 by Kaley*

**Criminal Justice/Report Writing**

In the sentence, “The report was mailed to the officer,” the writer is using: A. the active voice. B. the passive voice. C. chronological order. D. first person. I am confused between A & B
*Saturday, October 25, 2014 by Pat*

**Math**

A tree is losing its trees. Two thirds fall off in the first week, two thirds of those remaining fall off in the second week, and two thirds off those remaining fall off in the third week. Now there are 37 leaves. How many leaves did the tree have originally?
*Saturday, October 25, 2014 by Lucy*

**math**

A caterer prepares three times as many pizzas as she usually prepares for a large party. The caterer usually prepares 5 pizzas. The caterer also estimates that each party guest will eat 1/3 of a pizza. First write an expression that represents this situation. How many party ...
*Saturday, October 25, 2014 by kymy*

**theory of interest**

1.Two investments are made at the same time. The first consists of investing 1550 dollars at a nominal rate of interest of 7.9 percent convertible semiannually. The second consists of investing 1450 dollars at a nominal rate of interest of 7.9 percent convertible daily. How ...
*Saturday, October 25, 2014 by ALBERT*

**college algebra**

There were 39,000 desktop publishing jobs in the United States in 2000. It has been projected that there will be 64,000 desktop publishing jobs in 2010. (a) Using the BLS data, find the number of desktop publishing jobs as a linear function of the year. N(t)= _____? (b) Using ...
*Saturday, October 25, 2014 by Jesse*

**History Check answers**

1. Peter the Great wanted to A. westernize, or Europeanize, Russia. B. remove European influences. C. reduce the size of the army. D. share power with his nobles. 2. The Romanov dynasty in Russia was A. originally from Holland. B. focused on restoring Catholicism. C. chosen by...
*Friday, October 24, 2014 by mstv*

**college algebra**

There were 39,000 desktop publishing jobs in the United States in 2000. It has been projected that there will be 64,000 desktop publishing jobs in 2010. (a) Using the BLS data, find the number of desktop publishing jobs as a linear function of the year. N(t) = ________ (b) ...
*Friday, October 24, 2014 by Cathy*

**s.s**

As a result of the First Continental Congress, a. the Declaration of Rights was drafted. b. King George agreed to comply with the majority of the colonists’ demands. c. colonists agreed to comply with the majority of British rules. Is it A
*Friday, October 24, 2014 by edu*

**Math Calc**

Let theta be an angle in the first quadrant, and suppose sin theta equals a. Evaluate sin(180 degrees + theta) in terms of a sin(180 degrees + theta) =
*Friday, October 24, 2014 by Josh*

**algebra**

On the second part of her trip, Tamiko drove 21 miles less than two times as far as the first part. Let f represent the number of miles driven on the first part of her trip.Then write an algebraic expression that represents the number of miles driven on the other part. (what i...
*Friday, October 24, 2014 by Amy*

**english 1**

What is one way that “The Maori: Genealogies and Origins in New Zealand” contrasts with “The Raven and the First Men: The Beginnings of the Haida”?
*Friday, October 24, 2014 by rick*

**maths**

the sum of the first two terms of a GP is 28,but the sum of the third and fourth terms is 252.find the second term of the gp if the seventh term is 5103. please help.
*Friday, October 24, 2014 by miracle*

**STATISTICS HELP!!!!!**

Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then ...
*Friday, October 24, 2014 by Jess*

**Statistics**

Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 75 boxes, each box containing 30 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then ...
*Friday, October 24, 2014 by Alli*

**English**

@ words : 1- curtail 2- devastate 3- digress 4- incentive 5- incorporate 6- indispensable 7- intermittent 8- rigor 9- squander 10-succumb Linda never had to work hard to make good grades in high school. But in college, where the ___(8)___ of course work were greater, she soon ...
*Thursday, October 23, 2014 by William*

**Statics**

You have a stainless steel hollow rod (E=193GPa,ν=0.29) that has an inner radius r of 1.2cm, a wall thickness t of 0.7mm, and a length L of 5cm. Calculate the critical loads, in kN, for local buckling and Euler bucking (Pcr,local and Pcr,Euler, respectively). Which would ...
*Thursday, October 23, 2014 by qwerty*

**Psychics**

If a railroad car was moving and stroke another car at rest and the two cars then become attached by a special hitch. Does the first car have momentum? Why?
*Thursday, October 23, 2014 by sarah*

**physics**

Consider a railroad carmoving and striking another car at rest. The two cars then become attached by a special hitch. Does the first car have momentum? and why?
*Thursday, October 23, 2014 by sarah*

**phyics**

_________ was the first to show that all objects fall toward Earth with constant ____________.
*Thursday, October 23, 2014 by Ashley *

**statistics**

3. Community Health Center, a new patient clinic in your town serving only underinsured and uninsured patients, has asked you to help its HIM department. Calculate the number of shelving units needed for a medical record filing system based on eight shelves per unit at 36 ...
*Thursday, October 23, 2014 by Deb*

**English**

1. The last number of concert was impressive. 2. The last number of the concert was impressive. (Which one is correct? Do we have to use 'concert' or 'the concert'?) 3. Everyone was deeply impressed by the last number on the program. 4. Everyone was deeply ...
*Thursday, October 23, 2014 by rfvv*

**science**

suppose some natural disaster occurs and a species of finch is forced to relocate from its original island where us dined on cactus flowers ti ab adjacent island with many fewer cacti but an overabundance of orchids. what would be the immediate consequences to the species in ...
*Wednesday, October 22, 2014 by Anonymous*

**Physics**

A stone is thrown horizontally at 30.0m/s {\rm m}/{\rm s} from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2 s {\rm s} intervals for the first 10.0s {\rm s} a)Calculate the horizontal x and vertical y positions at time t = 2 s
*Wednesday, October 22, 2014 by Jenna*

**math**

Item Questions A store’s average monthly revenue for the first three months of the year was $12,000. The average monthly revenue for the entire year was $18,000. What was the average monthly revenue for the last nine months?
*Wednesday, October 22, 2014 by Anonymous*

**Algebra 2**

Darren McFadden of Arkansas placed second overall in the Heisman Trophy voting. Players are given 3 points for every first-place vote, 2 point for every second-place vote, and 1 point for every third place vote. McFadden received 490 total votes for first, second, and third ...
*Wednesday, October 22, 2014 by Amy*

**science**

1. radioactive decay occurs when atoms A- lose mass * B- join with atoms of another element C- break down to form atoms of another element D- are exposed to chemical weathering 2. if you want to consult the geologic time scale for when the first vertebrates evolved, where ...
*Wednesday, October 22, 2014 by anonymous *