# Homework Help: College

**college physics**

If a coyote is standing at the top of a 125 m cliff getting ready to drop a 230 kg boulder on a road runner. What is the potential energy of the boulder just as he is ready to drop it? What is the kinetic energy of the boulder at the instant it hits the ground? How fast is the...

*Monday, March 18, 2013 by patti*

**college physics**

If a girl drops a coin into a wishing well. After exactly 5 seconds she hears it splash into the water. How fast was the coin going after 1 second? After 2 seconds? How fast was the coin going when it hit the water? How far down is the water? Could you please help with the ...

*Monday, March 18, 2013 by patti*

**math**

A community college has 2,000 students and 50 instructors. Next year the enrollment will be 6,000. How many new instructors should be hired if the college wants to keep the same studentto instructor ratio?

*Monday, March 18, 2013 by naomie*

**college physics**

if a girl pulls on a 15 kg wagon with a constant horizontal force of 35N.Her friend pushes on the wagon in the same direction with a constant horizontal force of 10 N. and there is a friction force of 15 N. I need to draw a diagram of this problem and calculate the Net Force ...

*Monday, March 18, 2013 by patti*

**college algebra**

I need help bad. Don't know which formula to use. Please explain step by step. 2x^2-12x+19. Find the interval where f is increasing and decreasing.

*Monday, March 18, 2013 by Jackie*

**College Math**

A ice cream shop sells 4 flavors of ice cream, assume that all orders of two scoops are equally likely, what is the probability that in an order of two scoops both are of the same flavor?

*Sunday, March 17, 2013 by Peter*

**College Algebra**

a box with an open top is constructed from a rectangular piece of cardboard with dimensions 14 inches by 18 inches by cutting out and discarding equal squares of side x at each corner and then folding up the sides as in the figure. The cost to create such a box is 2.50 per ...

*Sunday, March 17, 2013 by John*

**College Chemistry/Lab Math**

I think I have this problem figured out correctly, but is there anyone who can tell me if I'm doing something wrong. The question is... "One troy ounce of gold is worth $380. There are 33.8 grams per troy ounce. You have a stock colloidal solution of a very fine gold dust. It'...

*Sunday, March 17, 2013 by James*

**math**

From a survey of 100 college students, a marketing research company found that 85 students owned iPods, 45 owned cars, and 35 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)? 1 students (b) How many students do not own either a car...

*Sunday, March 17, 2013 by buffy*

**ECONOMICS**

Suppose your college charges you separately for tuition and for room and board. What is a cost of attending college that is not an opportunity cost? What is an explicit opportunity cost of attending college? What is an implicit opportunity cost of attending college?

*Friday, March 15, 2013 by RAJA*

**college physics**

if a 12kg ball rolls down a ramp at 3 m/s and crashes into a pillow and it takes 0.65 s to stop the ball what is the momentum of the ball and the force exerted by the pillow? I would like to know the formula on how to figure this out.

*Friday, March 15, 2013 by patti*

**College algebra**

Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y= -x^2-6x

*Friday, March 15, 2013 by Anonymous*

**College algebra**

Find the value of f(x) = -3x^2 + 12x-8

*Friday, March 15, 2013 by Sara*

**College algebra**

Determine without graphing, whether the given function has a maximum value and then find the value. f(x)=3x^2+18x-6

*Friday, March 15, 2013 by Jenn*

**College algebra!**

For the linear function f(x) = 5x + 3 (a) Determine the slope and y-intercept (b) Use the slope and y-intercept to graph the linear function. (c) Determine the average rate of change of the function (d) Determine whether the linear function is increasing, decreasing, or constant.

*Friday, March 15, 2013 by Jenn*

**College algebra**

Answer the questions about the following functions. f(x) = 14^2/x^4 + 49 (a) Is the point (-sqrt 7,1) on the graph of f? (b) If x=1, what is f(x)? What point is on the graph of f? (c) If f(x)=1, what is x? what point(s) are on graph of f? (d)What is the domain of f? (e) list ...

*Thursday, March 14, 2013 by Jenn*

**calculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...

*Thursday, March 14, 2013 by bobbi33*

**calculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...

*Wednesday, March 13, 2013 by bobbi33*

**can some1 plz recheck my answers**

1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...

*Wednesday, March 13, 2013 by Amy*

**English**

1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...

*Wednesday, March 13, 2013 by Amy*

**College Chemistry**

Calculate activities of Ca2+ and F- and the solubility of fluorite (CaF2) in pure water at 25C without regard to possible hydrolysis. Assume that all activity coefficients are equal to one. Express the solubility of fluorite in terms of mol/L and g/L.

*Wednesday, March 13, 2013 by Ren*

**English**

1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...

*Wednesday, March 13, 2013 by Amy*

**College physics**

A toroidal solenoid has a mean radius of 8.00cm and a cross-sectional area of 4.80cm^2 and is wound uniformly with 90.0 turns. A second coil with 500 turns is wound uniformly on top of the first What is the mutual inductance of these coils?

*Wednesday, March 13, 2013 by Anonymous*

**College Physics**

A 22 μF capacitor and a 5.20 mH inductor are connected in series with an open switch. The capacitor is initially charged to 6.70 μC. What is the angular frequency of the charge oscillations in the capacitor after the switch is closed? W = _____ rad/s

*Wednesday, March 13, 2013 by Anonymous*

**calculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...

*Wednesday, March 13, 2013 by bobbi33*

**English**

I split this sentence into 2 parts is the colon use correct between football and There's? I love college football: There’s nothing like the sound of a fully packed stadium.

*Wednesday, March 13, 2013 by Bernie*

**College Chemistry**

2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring 0.943 g of NO and 589 mL of O2 measured at 30.7 °C and 829 torr into a 1 L vessel. When the mixture comes to equilibrium, what will be the ...

*Tuesday, March 12, 2013 by Peter*

**College Mathematics**

This is a repost. I posted a question 2 days ago and the response was wrong. The question was on Probability. The question was One card is selected from a deck of playing cards. Determine the probability of selecting a jack OR a club. use this rule P(A or B) = P(A) + P(B) - P(...

*Tuesday, March 12, 2013 by slomomo*

**College Mathematics**

Probability. Select one card. One card is selected from a deck of playing cards. Determine the Probability of selecting a Jack OR a club. P(AorB)= P(A) + P(B) - P(A and B)

*Tuesday, March 12, 2013 by slomomo*

**College Math**

Find the area of a triangular piece of carpet that has a 12-inch base and is 18 inches high.

*Monday, March 11, 2013 by Linda*

**valculus**

A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...

*Monday, March 11, 2013 by clerkbob*

**English**

i have a hard time calculating my grade & am in college. Please tell me the grade I have so far & will have, thank you!365 points in the course is needed. Lecture exams and quizzes are worth about 60% of the total grade &90 ≤ A 80 ≤ B < 90 70 ≤ C < 80 ...

*Monday, March 11, 2013 by jessica*

**College Mathematics**

(odds) Playing Bingo:When playing bingo, 75 balls are placed in a bin and balls are selected at random. Each ball is marked with a letter and a number as indicated in the following chart: B: 1-15 I: 16-30 N:31-45 G:46-60 O:61-75. For example there are balls marked B1,B2 up to ...

*Monday, March 11, 2013 by slomomo*

**College Mathematics**

Probability: "or" and "and" problem. Select one card, one card is selected from a deck of playing cards. Determine the probability of selecting a jack or a club.

*Sunday, March 10, 2013 by slomomo*

**college general chemistry**

3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq) how do I find the molar mass of precipitate.X hydrate

*Sunday, March 10, 2013 by Amber*

**stats**

The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months. x 0 1 2 3 4 5 P (X=x) 0.20 0.25 0.20 0.15 0.10 0.10 Find P( X > 1)

*Sunday, March 10, 2013 by cate*

**College Algebra**

Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions. 2x2 = -2 -5 Thank you

*Saturday, March 9, 2013 by Sally*

**college physics**

small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the spark plug. A permanent magnet is attached to the flywheel, and a stationary coil is mounted adjacent to it. Explain how this device is able to generate current. What ha[[ens ...

*Friday, March 8, 2013 by Anonymous*

**college algebra**

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 2,500 + 400 ln a (a ¡Ý 1) How many units are sold after spending $1,000? (Round your answer to the ...

*Friday, March 8, 2013 by Tichie*

**homework**

A trigangular region of a community college parking lot was measured. The measure of the first angle of this triangle is doubled the measure of the second angle. The measure of the third angle is 89 degree greater than double the measure of the first angle. what is the ...

*Friday, March 8, 2013 by Tameka Graves*

**college physics**

A long, straight, cylindrical wire of radius R carries a current uniformly distributed over its cross section. 1. At what location is the magnetic field produced by this current equal to quarter of its largest value? Consider points inside the wire. 2.At what location is the ...

*Thursday, March 7, 2013 by Anonymous*

**College Mathematics**

write the statement in symbolic form. Let p: the temperature is 90 degrees Let q: The air conditioner is working r: the apartment is hot. If the apartment is hot and the air conditioning is working, then the tempurature is 90 degrees.

*Wednesday, March 6, 2013 by Lisa*

**MONGU COLLEGE**

A 1200 ohms resistance of AC 0.07H inductance coil and a 0.001mF capacitor are in series across a 120V source determine. a.frequency. b.current. c.impedance.

*Tuesday, March 5, 2013 by barotseland network*

**MONGU COLLEGE**

A resistor of 15 ohms and an inductor of 4H and capacitor of 25 micro F are connected in series across 230V AC supply calculate. a.The frequency b.current c.voltage drop or pd across inductance.

*Tuesday, March 5, 2013 by barotseland network*

**Math College**

Solve the Matrix 12 -3 8 01 2 4 00 1 2

*Tuesday, March 5, 2013 by Anonymous*

**College math**

if f(x) =x+3/7 and g(x) =4+5x find (gof) (x)

*Tuesday, March 5, 2013 by Anonymous*

**College Math**

10a+ 10c + s = 180 5a + 3c + 2s = 500 a = 10c

*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c

*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c

*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c

*Tuesday, March 5, 2013 by Anonymous*

**College math**

10+ 10 + s = 180 5a + 3c + 2s = 500 a = 10c

*Tuesday, March 5, 2013 by Anonymous*

**college math**

ticket for a concert cost $5.00 for adults, $3.00 for children and $2.00 for senior citizens. Revenue was $500.00 for 180 tickets. 10 times more adults than children attended. How many senior tickets were sold?

*Tuesday, March 5, 2013 by Anonymous*

**College Mathematics**

write the statement in symbolic form. Let p: The Temperatue is 90 degrees Let q: The air conditioner is working Let r: If the apartment is hot and the air conditioner is working, then the temperature is 90 degrees.

*Tuesday, March 5, 2013 by Lisa*

**College Mathematics**

write the statement in symbolic form. Let p: The Temperatue is 90 degrees Let q: The air conditioner is working Let r: If the apartment is hot and the air conditioner is working, then the temperature is 90 degrees.

*Tuesday, March 5, 2013 by Lisa*

**Reading**

Not sure which answers to use.. please help: choose from these words: deficit, dissent,lucrative and agnostic.. 1& 2: My uncle decided to splurge and _____ with a country club because golf is his favorite_________.(Dissent & lucrative) 3 & 4 : Because my father_______s to make...

*Tuesday, March 5, 2013 by sam*

**College Mathematics**

Construct a truth table for the statement (p<--->q)--->p

*Tuesday, March 5, 2013 by Lisa*

**algebra**

Andrew has a four-year college loan for $20,000. The lender charges a simple interest rate of 5 percent. How much interest will he have to pay? simple interest = P × r × t

*Monday, March 4, 2013 by Anonymous*

**college chemistry**

if my sublimation apparatus imploded, what was the cause of it?

*Monday, March 4, 2013 by Anonymous*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...

*Monday, March 4, 2013 by Anonymous PLEASE HELP!*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...

*Monday, March 4, 2013 by Anonymous PLEASE HELP!*

**college algebra**

given the following polynomial find the zero and multiply of each were the graph touches the x axis number of turning points fx =(x-4)(x^2-25)

*Monday, March 4, 2013 by zachary*

**college algebra**

Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function. y= -x^2+2x+8

*Monday, March 4, 2013 by zachary*

**Stat**

1. For the following scores, X Y 1 6 4 1 1 4 1 3 3 1 Sketch a scatter plot and estimate the value of the Pearson correlation. b. Compute the Pearson correlation 2. For the following set of scores, X Y 6 4 3 1 5 0 6 7 4 2 6 4 a. Compute the Pearson correlation. b. Add 2 points ...

*Monday, March 4, 2013 by Cole Brown*

**College Algebra**

A calculator company produces a scientific calculator and a graphing calculator. Long-term projections indicate an expected demand of at least 100 scientific and 80 graphing calculators each day. Because of limitations on production capacity, no more than 200 scientific and ...

*Sunday, March 3, 2013 by Anonymous please help :)*

**statistics**

In order to plan for parking and transportation needs at a college, administrators asked students how they got to school. Some came by bus, some came by car and the others used “personal “ transportation – bikes, skateboards, or walked. The following table summarizes the...

*Sunday, March 3, 2013 by Sue*

**College physics**

Open Question: Find the electric field between the plates of a capacitor given the following:? (1) C= 10pF (2) the capacitor is connected to a 25 V battery (3) there is a vacuum between the capacitor plates (4) plate separation is 2 mm

*Sunday, March 3, 2013 by Julie*

**College physics**

Open Question: Two equal point charges of 5 µC are on the horizontal axis. One charge is at -10 cm, the other is at +10 cm.? These two charges don't move, they are STUCK, take the potential to be zero at infinity. Find the potential at the following coordinates: (0,0) cm, (0,...

*Sunday, March 3, 2013 by Julie*

**College Physics**

A proton is put on the positive Y axis a large distance (100km) from the origin. What is the minimum speed required in the - Y direction so the proton will just reach the point (0,20) cm?

*Sunday, March 3, 2013 by Marcus*

**MONGU COLLEGE**

During an experiment conducted on the effort E to lift a load W when using a simple the following values were recorded. ………………………………………………………………………………………… |Effort E| 20 | 24.8|30 | 35 | 45...

*Thursday, February 28, 2013 by barotseland network*

**MONGU COLLEGE**

During an experiment conducted on the effort E to lift a load W when using a simple the following values were recorded. ………………………………………………………………………………………… |Effort E| 20 | 24.8|30 | 35 | 45...

*Thursday, February 28, 2013 by barotseland network*

**MONGU COLLEGE**

Uksis m16 ussr adfd ssa f2b

*Thursday, February 28, 2013 by Frank umpierre*

**MONGU COLLEGE**

In a single swing pendulum moves through an angle of 1.92 Radian. (a). Determine the length of arc treated by the pendulum Bob. (b). The area of the sector if the length of the pendulum is 13.2cm.

*Thursday, February 28, 2013 by barotseland network*

**MONGU COLLEGE**

In a single swing pendulum moves through an angle of 1.92 Radian. (a). Determine the length of arc treated by the pendulum Bob. (b). The area of the sector if the length of the pendulum is 13.2cm.

*Thursday, February 28, 2013 by barotseland network*

**general chemistry College**

Which of the following mixture would be most likely to produce carbon dioxide? Explain Why? a. magnesium and nitric acid: Mg+ HNO3 b. sodium carbonate and sufuricacid: Na2CO3+H2SO4 c. H2O+ Cu

*Wednesday, February 27, 2013 by Donna*

**general chemistry College**

Which of the following mixture would be most likely to produce carbon dioxide? Explain Why? a. magnesium and nitric acid: Mg+ HNO3 b. sodium carbonate and sufuricacid: Na2CO3+H2SO4 c. H2O+ Cu

*Wednesday, February 27, 2013 by Donn*

**college algebra**

I need to graph y=2f(x+2)-3 and then graph f(-x) Where do I start?

*Wednesday, February 27, 2013 by Anonymous*

**college algebra**

I need to graph y=2f(x+2)-3 and then graph f(-x) Where do I start?

*Wednesday, February 27, 2013 by Anonymous*

**college algebra**

Transformation f ty transform graph y=x^2 or y=|x| graph for f by hand f(x)=2|x-6|-4

*Wednesday, February 27, 2013 by Anonymous*

**MATHS MONGU COLLEGE**

A cylinder whose volume is 386,000m3 has it's length 1.3 times its diameter. calculate the diameter of the cylinder given that the volume V = 3.142r2h.

*Wednesday, February 27, 2013 by barotseland network*

**MATHS MONGU COLLEGE**

Express (a) 50 km/hour mm/s. (b) 60 litres in m3 cube if 1 litre = 0.001m3.

*Wednesday, February 27, 2013 by BAROTSELAND NETWORK*

**MATHS COLLEGE. MONGU**

one to increased costs the labour charge of a certain establishment from $1.20 to $1.40 per hour .what is the percentage increase.

*Wednesday, February 27, 2013 by BAROTSELAND NETWORK*

**College Algebra**

Alfred has just developed a new super ball and you have been asked to test its rebound capabilities. From your experiment you have found if you drop the ball from a height of 250 centimeters the first bounce average is 180 cm. rebound ratio = ? Using this rebound ratio, ...

*Wednesday, February 27, 2013 by Leigh*

**college algebra**

Some bank robbers leave town, speeding at 70mph. Ten minutes

*Wednesday, February 27, 2013 by Anonymous*

**economics**

šPlease explain these question in words! š How will demand and supply curve shift? 1. Labor market for math and science teachers when wages available in private industries utilizing these skills rise. 2. Labor market for university professors when college enrollment ...

*Wednesday, February 27, 2013 by chocolatemilk*

**college chemistry**

during a liquid-liquid extraction the procedure often calls for the use of saturated NaCl when ether is used as the extraction solvent, but not when dichloromethane is used. why?

*Tuesday, February 26, 2013 by Anonymous*

**College Algebra**

Develop a tree diagram for tossing two, eight-sided gaming dice to figure out how many possibilities there are. Discuss the purpose of using such a visual in working out probability.

*Tuesday, February 26, 2013 by Stacy*

**College Algebra**

Provide one example to show how you can use the Expected Value computation to assess the fairness of a situation (probability experiment). Provide the detailed steps and calculations.

*Tuesday, February 26, 2013 by Stacy*

**MONGU COLLEGE**

find the line perpendicular and passes through (0,0) 5x-2y =10

*Tuesday, February 26, 2013 by barotseland network*

**MONGU COLLEGE**

1.Determine the sum of infinity of the series 4,2,1

*Tuesday, February 26, 2013 by barotseland network*

**college physics**

You are in the lab with a 10 V battery. You have a 10 W light bulb and you want to put 0.75 A of current through the light bulb and 7.5 V across the light bulb. This will allow the light bulb to have a brightness proportional to 5.625 W. Assuming any resistors that you need, ...

*Tuesday, February 26, 2013 by michelle*

**College physics**

According to test performed by the manufactures, an automobile with an initial speed of 75 km/h has a stopping distance of 25 m on a level road. assuming that no skidding occurs during breaking, what is the value of μ , between the wheels and the road required to achieve ...

*Tuesday, February 26, 2013 by Sneakatone*

**help college algebra**

given the following piecewise function f(x) = -x+1 for x<0 -1 for 0<x<3 -2x for x>3 find the domain find the range find the intercept d) is f continuous on it domain if not sate where f is dicontinous

*Tuesday, February 26, 2013 by zachary*

**college algebra**

given the function fx=x^3+x a) find the rate of change between the two stated values for x: 1 to 2 B)find the equation of a secant line containing the given points (1,f(1))and (2,f(2)

*Tuesday, February 26, 2013 by zachary*

**college algebra**

Transformation of ty then transformations of the graphs y=x^2or y=|x| to sketch a graph of f by hand. f(x)=2|x-6|-4

*Monday, February 25, 2013 by Anonymous*

**College Algebra help please**

I don't understand this. The question is use the remainder theorem to evaluate P(x) as given. 1. P(x)=3x^3+11x^2+2x-16 and it gives me P(1/3)

*Monday, February 25, 2013 by Kristen*

**college algebra**

please help me solve this equation x-1/3x-1/2x-5=0

*Monday, February 25, 2013 by ray*

**math**

Sonja needs to borrow $2,251 to pay for her college classes. Sallie Mae is offering her a 4.5% simple interest loan with an interest charge of $405.18 over the life of the loan. How many years is Sallie Mae giving her to pay back the loan with interest?

*Monday, February 25, 2013 by kelly*

**finance**

You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted to medical school is about 6 percent. If you are accepted to medical school, then your starting salary when you graduate will ...

*Monday, February 25, 2013 by elh009*

**Staistcs**

Problem 4 Refer again to the distribution table in Problem 3. : 3.0 points Each part is worth 1 point. a) In the United States, high school diplomas are awarded after 12 years of schooling. Which interval contains the adults who had completed 12 years of school and did not ...

*Monday, February 25, 2013 by A*

**college physics**

A 4m long copper wire has a diameter of 2mm and carries a current of 10A. Determine the ff: a. current density in the wire b. electric field c. potential difference between the ends of the wire d. resistance of the wire

*Monday, February 25, 2013 by Zell*