Thursday

October 20, 2016
**college chemistry**

exactly 11.2 ml of water at 23°c are added to a hot iron skillet. all of the water is converted into steam at 100°c. the mass of the pan is 1.5 kg and the molar heat capacity of iron is 25.19 j/(m·°c). what is the temperature change of the skillet

*Tuesday, October 22, 2013 by eboni*

**college algebra**

find the domain of (x-2)/(-3x+7)

*Monday, October 21, 2013 by Dee*

**college algebra**

Let f(x) = 1/x − 2 and g(x) = 1/x − 3 . Determine the domain of the composite function. (Enter your answer using interval notation.) g compose f _____? & Find the composite function. (g compose f)(x) = _____?

*Monday, October 21, 2013 by Dee*

**college algebra**

Let f(x) = square root (x + 2) and g(x) = x^2 − 2. Determine the domain of the composite function. (Enter your answer using interval notation.) f compose f ______? & Find the composite function. (f compose f)(x) = _____?

*Monday, October 21, 2013 by Dee*

**college algebra**

Let f(x) = x + 2 and g(x) = x2 − 2. Determine the domain of the composite function.

*Monday, October 21, 2013 by Dee*

**college algebra**

what is the domain of (square root of x) +7?

*Monday, October 21, 2013 by Dee*

**college physics**

One athlete in a race runnng on a long, straight track with a constanct speed v1 is a distance d behind a second athlete running with a constant speed v2. (a) Under what circumstances is the first athlete able to overtake the second athlete? (Use v_1 for v1, v_2 for v2, and d ...

*Monday, October 21, 2013 by alaa*

**College Physics**

A 27.7-cm-by-27.7-cm checkerboard has a mass of 103.1 g. There are four 27.7-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of the checkerboard, where is the center of mass of the checkerboard-checkers ...

*Sunday, October 20, 2013 by Kimmy*

**College Physics**

A fire hose 4.79 cm in diameter is capable of spraying water at a velocity of 17.1 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?

*Sunday, October 20, 2013 by Kimmy*

**college physics**

Why do the passengers in high- altitude jet planes feel the sensation of weight while passengers in the International Space Station do not?

*Sunday, October 20, 2013 by bbragg*

**Math (College Pre-Cal)**

Find a formula for(f o g)(x)assuming that f(x)= e^(4-7x)and g(x)= ln(x). Give your answer in the simplest form.

*Sunday, October 20, 2013 by anonymous*

**college history**

The evolution of the socio-political and cultural milieu that created the conditions necessitating and including the formation of the: (a) Declaration of Independence (b) the Constitution (including the Bill of Rights)

*Saturday, October 19, 2013 by Melody*

**college physics**

If an automobile had a 100% efficient engine transferring all of the fuel's energy to work, would the engine be warm to your touch? Would its exhaust heat the surrounding air? Would it vibrate? Would any of its fuel go unused? There are really no 100% percent efficient ...

*Friday, October 18, 2013 by bbragg*

**english**

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces and ...

*Friday, October 18, 2013 by Anonymous*

**math**

You and your friend are saving for college. You have $50 and are added $10 each week to your savings. Your friend has $20 and he is adding $20 each week to his savings. a. what system of equations would be a good model for this situation? Let x be number of weeks and y be the ...

*Friday, October 18, 2013 by Lisa*

**College**

Do the Counselors, at the Colleges, suppose to give their students good advises, of how to continues, and to further there Education, and to supervised how to UPGRADE their Continuing Education? YES? OR NO? WHY?

*Friday, October 18, 2013 by Lola*

**Health **

1). State how each of the six risk behaviors could affect one of your goals. A: Each of the six risk factors could affect my goal of becoming an actress immensely. Drug and alcohol use, poor dietary problems, and tobacco use could harm my physical health, making me unable to ...

*Thursday, October 17, 2013 by Anonymous*

**college physics**

Show that 480W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2m in a time interval of 1.5s.

*Thursday, October 17, 2013 by bbragg*

**College Chem**

Oxygen gas has a Henry's law constant of 1.66*10^-6 M/mm Hg at 40 degree C when dissolving in water. If the total pressure of gass (O2 gas plus water vapor) over water is 1.0 atm, what is the concentration of O2 in the water in grams per milliliter? Pressure of the water ...

*Tuesday, October 15, 2013 by Kimmy*

**english language arts 2**

Identify the comma rule that the following sentence breaks: Although she loved her parents Sarah was eager to leave for college and be independent.

*Tuesday, October 15, 2013 by dominique*

**Algebra 0110 College**

1) A rectangle has perimeter 38 feet and an area of 78 square feet. Find the dimensions of the rectangle assuming the width is smaller than the length. L= W= 2) A rectangular canvas picture measures 9 inches by 7 inches. The canvas is mounted inside a frame of uniform width, ...

*Tuesday, October 15, 2013 by Quince*

**College readiness**

Rent-it-Right rents compact cars for $38 plus $0.15 per mile. Lucia rented a car for 3 days and was charged $150. How many miles did she drive?

*Monday, October 14, 2013 by Jorge Suarez*

**college math**

The classification of closed orientable surfaces says that they are all spheres with a certain number of handles attached. For example, a sphere is a sphere with 0 handles. A torus is a sphere with one handle. A two holed torus is a sphere with two handles etc. How does one &...

*Monday, October 14, 2013 by ml*

**College Algebra**

Find the standard form of the equation of the parabola with the given characteristics and vertex at the origin. Passes through the point (-5, 1/8); vertical axis. There is no focus of the parabola or equation given, so how am I suppose to solve this problem?

*Monday, October 14, 2013 by Joy*

**College Algebra**

Find the standard form of the equation of the parabola with the given characteristics and vertex at the origin. Passes through the point (-1, 1/8); vertical axis. There is no focus of the parabola or equation given, so how am I suppose to solve this problem?

*Monday, October 14, 2013 by Joy*

**college algebra**

the following rational function gives the number of days it would take two construction crews, working together, to frame a house that crew 1 (working alone)could complete in t days and crew 2 (working alone) could complete in t+3 days. f(t)=(t^2+3t)/(2t+3). (a) if crew 1 ...

*Monday, October 14, 2013 by Dee*

**College Physics**

Tarzan swings on a vine from a cliff to rescue Jane, who is standing on the ground surrounded by snakes. His plan is to push off the cliff, grab Jane at the lowest point of his swing, and carry them both to the safety of a nearby tree (see figure). Tarzan's mass is 76.1 kg...

*Sunday, October 13, 2013 by Kimmy*

**College Physics**

Although they don’t have mass, photons—traveling at the speed of light—have momentum. Space travel experts have thought of capitalizing on this fact by constructing solar sails—large sheets of material that would work by reflecting photons. Since the ...

*Sunday, October 13, 2013 by Kimmy*

**College Physics**

The electron-volt, eV, is a unit of energy (1eV = 1.602 ·10–19 J, 1 MeV = 1.602 ·10–13 J). Since the unit of momentum is an energy unit divided by a velocity unit, nuclear physicists usually specify momenta of nuclei in units of MeV/c, where c is the ...

*Sunday, October 13, 2013 by Kimmy*

**college essay**

can someone help me edit this My Song My existence thus far has been a musical performance. The world is my stage, the platform upon which I express myself creatively. My life is the reputable melody that I play on my guitar, and the notes are my memories and life experiences...

*Sunday, October 13, 2013 by chhristine*

**College probability and statistics**

The current license plates in New York State consist of three letters followed by four digits. ( i ) How many possible distinct license plates can there be? ( ii ) How many possible distinct license plates could there be if the letters O and I and the digits, 0 and 1 were ...

*Saturday, October 12, 2013 by Melissa *

**college statistics**

7. Mary goes into the supermarket. The probability that she buys (a) regular coffee is .30, (b) decaffeinated coffee is .40, and (c) that she buys both is .30. What is the probability that she buys regular coffee, decaffeinated coffee, or both?

*Thursday, October 10, 2013 by shanice*

**college statistics**

2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean = 43 with SS = 2400. ...

*Thursday, October 10, 2013 by shanice*

**reading interpretation**

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces and ...

*Thursday, October 10, 2013 by Cassie*

**college algebra**

Need help in finding all vertical, horizontal, and slant asymptotes, x- and y-intercepts, and symmetries of f(x)=(x-3)/(x-4)

*Wednesday, October 9, 2013 by Dee*

**Mendipather college**

What are the significant challenges to effective governance in india?

*Wednesday, October 9, 2013 by S. Gabil*

**college physics**

A conductor in a shape of a spherical shell of radii 10 and 12cm in charged to 20 micro coloumb. 1) Find the electric field at the following radii: 2,11,15 cm. 2)Find the electric potential at each of these radii. Repeat part 1 and a -5 microcoloumb point charge is being ...

*Wednesday, October 9, 2013 by vishal*

**College: Chem 1**

What would be the molar concentration of the solute in each of the following solutions? a. 0.50 L containing 38.6 g of NaClO4 b. 0.25 L containing 41.5 g of C4H8O

*Tuesday, October 8, 2013 by Anonymous *

**college chem**

a compound containing

*Monday, October 7, 2013 by Erika*

**estraellamountaincommunity college**

an American football field is a rectangle with a perimeter of 1040 feet the Lenght is 200 feet more than the width find the demensionof the field

*Monday, October 7, 2013 by robinson*

**College Math 45**

Mrs. Brown has 17 children in her first-grade class, and Mr. Lopez has 20 children in his second-grade class. The principal has been asked to select 1 student from one of the classes to appear at a PTA meeting. How many ways can the selection be made?

*Sunday, October 6, 2013 by Anonymous*

**college physics**

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b...

*Sunday, October 6, 2013 by vishal*

**college physics**

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b...

*Sunday, October 6, 2013 by vishal*

**college physics**

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b...

*Sunday, October 6, 2013 by vishal*

**question**

if your a highschool student for the the summer can you go to community college and earn credit for highschool

*Saturday, October 5, 2013 by kevin*

**College Algebra**

A rancher wishes to enclose a rectangular partitioned corral with 1932 feet of fencing. What dimensions of the corral would enclose the largest possible area? Find the maxium area.

*Friday, October 4, 2013 by Diane*

**algebra 1**

You work in the local mailroom at a college. One of your duties is to sort local mail from all of the other mail. You can sort 8 pieces of mail in 10 seconds. How many pieces of mail should you be able to sort in 45 minuets?

*Thursday, October 3, 2013 by kayla: HELP*

**Algebra 1**

You work in the local mailroom at a college. One of your duties is to sort local mail from all of the other mail. You can sort 8 pieces of mail in 10 seconds. How many pieces of mail should you be able to sort in 45 minuets?

*Thursday, October 3, 2013 by ABBY*

**College Statistics**

Suppose we want to model the number of rats captured in a single trap in a day, where the average number caught is 5 (i.e. X ∼ Poi(5)). (a) What is the probability of catching 6 rats in one trap in a day? (b) What is the probability of catching 12 rats in 2 traps in a ...

*Monday, September 30, 2013 by Janet*

**College Statistics**

For X ∼ Bin(n, p), show that E(X) = np and Var(X) = np(1 − p) Our book defines this as true, but I don't know how to actually prove it.

*Monday, September 30, 2013 by Janet*

**college math**

1/100000-1/10000

*Monday, September 30, 2013 by Tekishia*

**Math (College Pre-Cal)**

The exact conversion between the English measurement system and the metric system is given by the equation 1 inch= 2.54 cm. Let f(x) be the number of miles in x meters. Find a formula for f(x). Give an exact answer.

*Sunday, September 29, 2013 by anonymous*

**college physics**

An object acted on by three forces moves with constant velocity. One force acting on the object is in the positive x direction and has a magnitude of 6.4N ; a second force has a magnitude of 5.0N and points in the negative y direction.

*Sunday, September 29, 2013 by taylor*

**algebra**

Kelly plans to put her graduation money into an account and leave it there for 4 years while she goes to college. She receives $750 in graduation money that she puts it into an account that earns 4.25% interest compounded semi-annually. How much will be in Kellys account at ...

*Sunday, September 29, 2013 by joe*

**Wayne community college**

When a 0.101 kg mass is suspended at rest from a certain spring, the spring stretches 3.80 cm. Find the instantaneous acceleration of the mass when it is raised 5.90 cm, compressing the spring 2.10 cm.

*Sunday, September 29, 2013 by Joe*

**college physics**

Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. (...

*Saturday, September 28, 2013 by physics*

**statistics**

The typical amount of sleep per night for undergraduate college students has a bell shaped distribution with a mean of 7 and a standard deviation of 1.90 hours. Based on this distributional information we can conclude that at least 95 % of this population sleep ...

*Friday, September 27, 2013 by jennifer*

**algebra**

Miranda's financial aid stipulates that her tuition not exceed $1200. If college charges a $45 registration fee plus $475 per course, what is the greatest number of courses for which Miranda can register. Miranda can register for at the most ???? courses

*Friday, September 27, 2013 by John*

**college math**

A professor wants to supplement her pension with investment interest. If she invests $26,000 at 4% interest, how much more would she have to invest at 7% to achieve a goal of $2,300 per year in supplemental income?

*Wednesday, September 25, 2013 by tillman*

**English **

What's a good introduction for an essay about Pressure that Working College Students Face? please help (:

*Monday, September 23, 2013 by Blanca*

**Florida career college**

The medical practice uses 48-inch-wide shelving units, which hold 46 inches of files per shelf. There are eight shelves. This means each unit can hold 8x46 inches = 368 inches . How many shelving units does the practice need to store its patient records?

*Monday, September 23, 2013 by Wava *

**College physics**

If you throw a ball horizontally while standing on a skateboard, you roll backward with a momentum that matches that of the ball. Will you roll backward if you hold onto the ball while going through the motions of throwing it? Explain in terms of momentum conservation.

*Sunday, September 22, 2013 by Miss Angie*

**college physics**

a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. (...

*Sunday, September 22, 2013 by vishal*

**college physics**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

*Saturday, September 21, 2013 by vishal*

**college physics**

In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...

*Saturday, September 21, 2013 by vishal*

**college physics**

(a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. (...

*Saturday, September 21, 2013 by vishal*

**Math (College Level Mathematics)**

Fourier sin series for f(x) = 1, 0 < x < Pie is given by 1 = 4/n E 1/ (2n-1) times sin (2n-1) x, (0 < x < n). Using this, find the Fourier sinc series for f(x)= 1, on 0 < x < c where c > 0. Then find the Fourier series for g(x), x > 0 where g(x) = 1, 0...

*Saturday, September 21, 2013 by Joy*

**Math (College Level Mathematics)**

Fourier cosine series correspondence for f(x)= x, o < x < pie given by x ~ pie / 2 - 4/n, E infinity on top and n=1 on bottom. cos (an-1)/x / (2n-1)squared, (0 < x < Pie). Explain why this correspondence is actually an equality for 0 is less than or equal to x and...

*Saturday, September 21, 2013 by Joy*

** Math (College Level Mathematics)**

Let c > 0 be a constant. For F E Cp (-C, C), the Bessel inequality is ao squared/ 2 + N E n = 1 (an squared + bn squared) is less than or equal to 1/C { c on top, c on bottom [ f (x)] squared of x, N = 1, 2, ... Where an and bn are the Fourier coefficients for f (x), -c <...

*Friday, September 20, 2013 by Joy*

**College Physics 1**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.17 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 25° when they move past the window, as the ...

*Friday, September 20, 2013 by Autianna*

**College Algebra**

Need help in working this problem - the cost of renting an edger is $16.50 for the first hour and $10.95 for each additional hour. How long can a person have the edger if the cost must be less than $55.00? (This is a question under the inequalities section)

*Wednesday, September 18, 2013 by Debo*

**college physics**

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 ÂµC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C toward the rod away from the rod

*Wednesday, September 18, 2013 by suhani*

**college physics**

In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, where the radius of the orbit is approximately 0.542 multiplied by 10-10 m. (The actual value is 0.529 multiplied by 10-10 m.) (a) Find the electric force exerted on each particle, ...

*Wednesday, September 18, 2013 by suhani*

**college physics**

(a) Two protons in a molecule are 3.80 multiplied by 10-10 m apart. Find the electrical force exerted by one proton on the other. Magnitude N (b) State how the magnitude of this force compares with the magnitude of the gravitational force exerted by one proton on the other. (...

*Wednesday, September 18, 2013 by suhani*

**Math (College Pre-Cal)**

For given functions f and g find formulas for a)f o g and b)g o f. Simplify results as much as possible. f(x)= x+7/x-13 , g(x)= 1/x+1

*Tuesday, September 17, 2013 by Brenda *

**Physics 2 College Level**

A cylinder is closed at both ends and has insulating walls. It is divided into two compartments by an insulating piston that is perpendicular to the axis of the cylinder as shown in Figure a. Each compartment contains 1.00 mol of oxygen that behaves as an ideal gas with γ...

*Tuesday, September 17, 2013 by Sarah*

**College Physics**

How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ?

*Tuesday, September 17, 2013 by TaNay*

**College Physics 1**

A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe, starting from rest, takes...

*Tuesday, September 17, 2013 by Sara*

**College Algebre**

f(x)= -3x^2+5x-2 Find f(x+h)/h

*Monday, September 16, 2013 by Sam*

**choice**

Varsity Press, a publisher of college textbooks, received a $70,000 promissory note at 12% ordinary interest for 60 days from one of its customers, Reader’s Choice Bookstores. After 20 days, Varsity Press discounted the note at the Grove Isle Bank at a discount rate of ...

*Monday, September 16, 2013 by d*

**College Physics**

vector A has a magnitude of 29 units when B is added to A . find magnitude of B.

*Monday, September 16, 2013 by Anonymous*

**college math**

system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}

*Saturday, September 14, 2013 by Cece*

**Radius Question Geometry(college level)**

When you have 3 separate circles and the radius of each of those circles is 10 do i calculate like this? 2(10)+2(10)+2(10)=60 cm for my diameter

*Saturday, September 14, 2013 by luckybee*

**College Algebra**

A couple wants to rent a car for one day while on vacation. Frank's Automotive Rental wants $29 a day and $0.17 per mile, while Coups-For--Day wants $21 a day and $0.19 per mile . After how many miles wo9uld the price from Coups exceed the price to rent from Franks?

*Saturday, September 14, 2013 by Joyce *

**college physics**

Nobel laureate Richard Feynman (1918-1988) once said that if two persons stood at arm's length from each other and each person had 1% more electrons than protons, the force of repulsion between them would be enough to lift a "weight" equal to that of the entire ...

*Friday, September 13, 2013 by suhani*

**College algebra**

Allison drove home at 58 mph, but her brother Austin, who left at the same time, could drive at only 40 mph. When Allison arrived, Austin still had 108 miles to go. How far did Allison drive?

*Friday, September 13, 2013 by Nic*

**college algebra**

Find the intercepts of the function f(x). f(x) = (x - 2)2(x2 - 9)

*Thursday, September 12, 2013 by martha*

**college algebra**

Please help. Merina is moving out of her mom's house to her new house which is 14 miles away to reach her new house. Truck A offers a flat fee of $25 and $.40 per mile. What is the proper equation to solve the problem.

*Thursday, September 12, 2013 by Nima*

**College Math**

A plane flies 460 miles with the wind and 310 miles against the wind in the same length of time. If the speed of the wind is 30 mph, what is the speed of the plane in calm air?

*Tuesday, September 10, 2013 by G*

**college physics1**

A stone is dropped from rest from an infinitely tall building. Compute its velocity after 2 seconds

*Tuesday, September 10, 2013 by jenny*

**college algebra**

The county news earns a profit of $20 per year for each of its 3000 subscribers. Management projects that the profit per subscriber would increase by $0.01 for each additional subscriber over the current 3,000. How many subscribers are needed to bring a total profit of $113,100?

*Tuesday, September 10, 2013 by Dee*

**college algebra**

Scott and Laura have both invested some money. Scott invested $2500 more than Laura and at a 3% higher interest rate. If Scott received $900 annual interest and Laura received $450, how much did Scott invest?

*Tuesday, September 10, 2013 by Dee*

**College Algebra**

If a ball dropped from the top of a 400 ft building to hit the ground, how long would it take in seconds?

*Sunday, September 8, 2013 by Robert*

**college math**

I need help to simplify (-9)(-7) + 6?

*Sunday, September 8, 2013 by Elaine*

**college math**

Please simplify 100(-5)/25. Thanks a lot.

*Sunday, September 8, 2013 by Missy*

**college math**

simplify -10 -5

*Sunday, September 8, 2013 by Teddy*

**college algebra**

a large rectangular movie screen in an IMAX theater has an area of 8624 square feet. Find the dimensions of the screen if it is 10 feet longer than it is wide.

*Sunday, September 8, 2013 by Dee*

**college essay**

Im writing a college essay and Im not sure how to edit the first paragraph My existence thus far has been a musical performance. The world is my stage, the platform on which I can express myself creatively. My life is the reputable melody that I play from my guitar, and the ...

*Saturday, September 7, 2013 by chhristine*

**algebra 1**

A college student is looking at her monthly checking account records. On September 1, 2008, her checking account held a balance of $1,050. At the end of March 2009, her checking account held a balance of $800. What is the monthly rate of change for the student’s checking ...

*Friday, September 6, 2013 by sabina brown *

**SS**

Kevin decides to go straight to work after high school instead of college. What is the most likely long term consequence of this decision? a)changing jobs often b)making less money c)having lots of debt d)not finding work Is it b?

*Thursday, September 5, 2013 by Anonymous*