# Posts by ANONYMOUS

Total # Posts: 108,539

**Chemistry**

How many moles of Fe(OH)2 will dissolve in 1.00L of water buffered at pH = 12.00? Fe(OH)2 has Ksp = 1.8 ÃƒÆ’Ã¢â‚¬â€ 10^-15. How would I do this? Should I make an ice table? I know the pOH = 2.00.

**algebra 1**

The Olivares family forgot to fill up the gasoline tank of their minivan at the beginning of a long trip. After driving 120 miles, there were 10 gallons remaining in the tank. If their car used fuel at the rate of 1 gallon every 20 miles, which equation describes the number of...

**Precal**

start with tan x = sin x/cos x That by the way is not only the start but the end of it :)

**urgent calculus help please **

A 20m long ladder is leaning against a wall. The top of the ladder is sliding down the wall at a constant speed of 2m/s. How quickly is the bottom of the ladder moving away from the wall when the bottom of the ladder is 5m from the wall? Give your answer as an exact expression.

**AP Physics 1**

run far, run fast.

**Calculus -math**

The Perfect Pizza Parlour estimates the average daily cost per pizza, in dollars, to be c(x)=0.00025x^2 +8x +10/x, where x is the number of pizzas made in a day. A) Determine the total cost at a production level of 50 pizzas a day B) Determine the production level that would ...

**english**

What is the meaning of sqrt?

**mechanics**

In English premier league football match between arsenal and Manchester city club in the 2015/2016 season at the emirate stadium,sagna throws a ball going right at 15m/s towards Yaya toure and hits his chest.if Yaya toure's body exerted a force of 30N to the left for 0.25s...

**mechanics**

A 1200kg fuel tank is cruising at 15m/s and doesn't notice that the 800kg car right in front of it slowed down to 10m/s.the truck runs into the car in a collision that last for 0.25s.the tanker is going at 12m/s after the collision find(a)what force did the car exert on ...

**Physics-Graivty**

Suppose planet earth suddenly grew in size, so that its radius was twice as large as before. Also suppose that at the same time, its mass also doubled to twice its former mass. If you weight used to be 700 N, what is it on this "new" Earth. Describe why this is the ...

**math**

Use logarithmic differentiation to find y ? for the following function. x^3 = e^?4y4?9y

**philosophy-critical thinking**

Read statements (a) through (d) and identify any statement(s) that is irrelevant to the claim. (a) It is unfair to expect victims to bear the cost of someone else’s negligence. (b) Costs to victims arise as a result of the action of the drunk driver. (c) A policy of ...

**philosophy**

then should it be unacceptable by testimony?

**philosophy**

1.Only claims that can be objectively verified can be trusted. 2.Many people have reported encounters with ghosts. 1. unacceptable; problems in language 2. acceptable by testimony I just want to confirm if these answers are right.

**calculus **

Find the derivative of (3x+17)^13 (14x+6)^11x^-4/5 / (20x +3)^-9 using logarithmic differentiation. Assume x > 0.

**mechanics**

I don't understand

**mechanics**

A ball of mass 0.75kg moving horizontally at 5m/s strikes a vertical wall and rebounds with a speed of 2m/s.find (a)what is the impulse received by the ball?(b)calculate the coefficient of restitution(c)calculate the kinetic energy of the ball before and after collision.

**mechanics**

A ball of mass 0.75kg moving horizontally at 5m/s strikes a vertical wall and rebounds with a speed of 2m/s.find (a)what is the impulse received by the ball?(b)calculate the coefficient of restitution(c)calculate the kinetic energy of the ball before and after collision.

**physics**

A 6000kg truck travelling north at 5m/s collides with a 4000kg truck moving west at 15m/s,if the two trucks remain locked together after collision,find (a)with what speed and in what direction do they move immediately after collision?(b)what is the lost of kinetic energy of ...

**physics**

A ball is dropped from a height of 8m onto a horizontal floor and rebounds to a height of 12m.what is the coefficient of restitution between the ball and the floor?take g=10m/s^2

**math**

a new product is to be promote in the market. The sales in the first week is estimated to be 5000 unit with an increase of 1500 each week during the product's lifespan. Find the formulas for the number of sales, S(unit), in the nth week.

**philosphy**

1. It is highly conducive to the interests of the community that each individual should enjoy a liberty perfectly unlimited of expressing his sentiments. 2. Thus, to every man unbounded freedom of speech must always be, on the whole, advantageous to the state i need to state ...

**biology**

what are some complications of diabtetes mellitus?

**math**

a rectangle with dimension 30/7 m by 20/7 m is to be completely tiled with identical square tiles with no overlapping or cutting. Find the side length of the largest square tile which will accomplish the task.

**Algebra**

Find the solution set of 2?x = x - 3. A. {1, 9} B. {9} C. {1, -9} I got a quadratic and factored it as (x - 9)(x - 1). Then the solutions are x = 9 and x = 1. But the answer is supposed to be just 9. However, wouldn't x = 1 also work, if we do ?1 = -1?

**Maths**

Length of a cord is 71 1/2 it has been cut into 26 equal parts what is the length of each part?

**Dynamics**

The rod of the fixed hydraulic cylinder is moving to the left with a speed of 100 mm/s and this speed is momentarily increasing at a rate of 400 mm/s each second at the instant when sA = 425 mm. Determine the tension in the cord at that instant. The mass of slider B is 0.5 kg...

**Calculus**

How do you know the r is 2-y and not just y?

**Calculus**

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations y = 0.5x^2, y = 2, and x = 0 about the line y = 2. A. 8pi/15 B. 32pi/15 C. 64pi/15 D. 4pi/15 E. 16pi/15

**math**

x^2 = 4 x = +2 or -2

**Calculus**

The region enclosed by the graph of y = x^2 , the line x = 2, and the x-axis is revolved abut the y-axis. The volume of the solid generated is: A. 8pi B. 32pi/5 C. 16pi/3 D. 4pi 5. 8pi/3 I solved for x as ?y and set up this integral: 2pi * integral from 0 to 2 of y?y. But it ...

**PHYSICS**

Electrical force: Coulomb's law: F = kqQ / r^2 q = Q = 1.6*10^-19 Coulombs r = 5.9*10^-11 meters k = 8.99 x 10^9 N m^2 / C^2 Gravitational force: F = GmM /r^2 G = 6.67*10^-11 m = 9.1*10^-31 kg M = 1.67*10^-27 kg same r so it cancels when you do ratio Electricity wins :)

**Java**

Sorry, I meant I think it may be the first answer.

**Java**

"Assuming the necessary classes have been imported, which of the following statements will compile without error?" Object obj = new Calendar(); Calendar c = new Calendar(); GregorianCalender d = new Object(); Object e = new GregorianCalender(); I think it may be the ...

**Science, Physics**

zsasdsd

**Math**

A manufacturing company wants to minimize the cost of materials for a pop can which needs to hold 640 mL. Find the radius and height (in centimeters) of the cylindrical can with minimum surface area that holds this volume. Give your answer as a decimal number accurate to at ...

**math**

A microwaveable cup-of-soup package needs to be constructed in the shape of cylinder to hold 550 cubic centimeters of soup. The sides and bottom of the container will be made of syrofoam costing 0.03 cents per square centimeter. The top will be made of glued paper, costing 0....

**Math - Quadratic Equations**

Last one At present, Mark's age is x^2 years and Peter's age is x years. When mark is 10x years, Peter will be 3x years. What are their present ages? Question is kind of confusing to me, so again i just need help forming the equation. Thanks.

**Math - Quadratic Equations**

The base of a triangle is 6 cm longer than its height. If the area of the triangle is 140cm^2, what is the length of the base? Im just confused on how the equation should be formed. Thanks.

**math**

The height of a person above the ground on a Ferris wheel is given by the function h(t)=9 sin {pi/20 (t- pi/2))+ 12 where h(t) is the height in meters of person t seconds after getting on a) how long does it take the Ferris wheel to make one complete revolution b)what is the ...

**Math - Quadratic Equations**

Two consecutive even numbers have a product of 288. What are the numbers? The answer I got through trial and error was 18 and 16. Is there a way for me to form the question into an equation and work that out to find the answer, instead of just guessing numbers? Thanks.

**math**

Sasa, June and Don are waitresses. When they compare their tips at the end of their shift they notice that Juice earned 30c for every 40c that Sandy earned while Juice earned 20c for every 25c that Dido earned. How much would Dido earn if Sandy earns $36?

**Science unit 9**

What would you do to measure the volume of a baseball

**Geometry**

Given: ABCD is a parallelogram m?A = 60º ; BK ?AD AK = KD; Perimeter of ABCD = 24 Find: BD. So I have this question it has been giving head aches and I am vary tired of doing, can you post the answer and the solution my class is starting in 2 hours, and it would be a vary...

**Math**

I'm sorry I messed up I meant will it become greater or smaller

**Math**

If the decimal in the number 4157.98 is moved one place to the right the number will become-

**Math**

If the decimal in the number 4157.98 is moved one place to the right the number will become-

**History**

What were some advantages of using rifles as a weapon in WW1? I only got some down, but I need at least 3-5 more. Can fire many rounds in a minute, easy to bring and are lighter weight than most weapons, good portability, good range of up to 1400 meters

**gerund**

Is drinking the direct object So fixing is PN?

**gerund**

fixing is a d.o drinking is pn?

**Social science **

Most major cities in core countries are postindustrial. Can you think of an example of a growing city that is still in its industrial phase? How is it different from most Canadian cities?

**History/English**

Oh okay. The reason I made that my slogan is because my project is about advertising a weapon that is good for WW1, so I chose rifles. Would that be okay?

**History/English**

I am trying to make a slogan for a project I have. Is this correct grammar? Rifles are a man's best friend

**gerund help**

thank you so muchh! i didn't even think of that word! thank you again

**english**

Part A In January what does the speaker mean by the image in the following lines? (1point) The sun a spark Hung thin between The dark and dark. A. The sun barely shows behind the dark clouds. B. The sun sends off thin sparks in the night. C. The sun appears for only a short ...

**Ethics**

it is describing socialism because its not free not everything comes free?

**Ethics**

dean harris

**Ethics**

It is ethics of health care

**Ethics**

The traditional view of medical ethics is that a physician has a duty to his or her individual patient, rather than to society as a whole. Under that view, a physician should not deny a potentially beneficial treatment for one patient, in order to save costs or conserve ...

**Calculus**

minimum area

**social studies**

Anybody have the answers for the full unit test? please help need to check answers FAST

**Science**

The sun's apparent motion across the sky from East to West daily is due to the A) rotation of the sun. B) rotation of the earth. C) orbit of the earth around the sun. D) orbit of the sun around the earth. I think the answer would be c.

**Language arts**

he is right though ^

**math**

a diamond weighing 2.5 carats was cut into two pieces. The two pieces were put on a balance scale, one on each side. An additional weight of 0.9 carats on one side was required to maintain balance. Find the weight, in carats, of the larger piece

**science **

A man walk 3km East and 4km North what is his resultant displacement? Suppose he walks 3km and 4km 60 degree North of East. What is the displacement?

**Decroly**

If n represents the amount of songs stored on an MP3 player , analyze the meaning of the expressions n + 7, n - 2 , 4 n and n \2

**math**

It took Joe 3 hours swimming at a speed of 12 miles per hour to swim along the Charles River. If Jennifer is swimming the same path along the Charles River at a speed of 9 miles per hour, how long will it take her to complete her swim?

**math**

Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?

**American gov**

Thank you so much!

**American gov**

17. The requirements for libel detailed in New York Times v. Sullivan protect which principle? (1 point) equal protection of the law right to criticize the government separation of church and state judicial review as i'm researching i see protection a lot. so My answer is a?

**American gov**

Thank you

**American gov**

16. What ruling did the Supreme Court make regarding flag burning in Texas v. Johnson? (1 point) It is legal to burn flags other than the U.S. flag, but burning an American flag is not free speech because it affects public morale. Burning any sort of flag is a form of ...

**American gov**

i know i'm posting a lot but i just wanna be sure. my answer is b 14. Read the following excerpt from the Supreme Court’s ruling in Stanley v. Georgia. The makers of our Constitution undertook to secure conditions favorable to the pursuit of happiness . . . . They ...

**American gov 1 question answer check**

so federalism?

**American gov 1 question answer check**

i was researching the choices but i could't relate them to the question. and i don't wanna just guess.

**American gov 1 question answer check**

12. The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people. –Tenth Amendment This amendment is an example of which of the following? (1 point) prior restraint***** ...

**American gov**

But freedom to differ is not limited to things that do not matter much. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order. . . . If there is any fixed star in our constitutional ...

**gerunds**

then what is the gerund phrase for #3 you said no to both ive said now idk

**gerunds**

1. Camping and fishing on the Isleta Reservation subject 3. During some of the ceremonial dances object of prep 5. direct object

**American gov**

so it would be c? establishment clause

**American gov**

Check my answers pleaseee i have a star * by my answer 4. Rights are not absolute. Which of the following examples would support this statement? Select all that apply. (3 points) ( this one has 3 answers) A citizen criticizes public policy. A man yells “Bomb!” at an ...

**maths probability plz help**

(i) the probability that he goes early for his appointment is 0.6x0.3 + 0.4x0.65 (ii) the probability that he went by car is (0.6x0.7)/(0.6x0.7+0.4x0.35)

**physics**

I have the exact same question.. really need help

**Math**

*sorry* my name is nathaly but I like to put my name shorter for nat...

**social studies**

What use was made of this order, which set up military areas where the Secretary of War controlled who would enter the place, who would leave or stay, and who was excluded?

**chemistry**

Iron can be determined gravimetrically by precipitating as Fe(OH)3 and igniting to Fe2O3. The sample to be analyzed is weighed and transferred to a 400-mL beaker where it is dissolved in 50 mL of H2O and 10 mL of 6 M HCl. Any Fe2+ that is present is oxidized to Fe3+ with 1&...

**Maths**

The temperature at 12 was 10 degree above zero . If it decreases at the rate of 2 degrees per hour, what was the temperature at 2 afternoon?

**Maths**

The sum of money that will produce â‚¹1770 as simple interest in 7.5 year as 8% at per annum is how much

**chemistry**

metals with 8-hydroxyquinoline, C9H7NO. After weighing the mixed precipitate, the precipitate is dissolved and the amount of 8-hydroxyquinoline determined by another method. In a typical analysis, a 127.3 mg sample of an alloy containing iron, manganese, and other metals was ...

**Math - Mean Value Theorem**

Suppose f(x)=?x^2+?x+? is a general quadratic polynomial with ??0 and let [a,b] be any interval. According to the Mean Value Theorem there is at least one number c such that f(b)?f(a)=f?(c)(b?a). In this particular case the number c is unique and it's independent of the ...

**hi**

Fourteen soccer players want to share nine protein bars after the game. What fraction of a protein bar will each player get?

**Math - calculus**

Suppose f(x)=x^p where p>1 and [a,b]=[0,1]. According to the Mean Value Theorem there is at least one number c such that f(b)?f(a)=f?(c)(b?a). In this particular case the number c is unique but it depends on p. c=____ Your answer will be in terms of p.

**chemistry **

What type of chemical reaction is this equation? CuO (s) + [2H+ + SO4 2-](aq) [Cu2+ + SO4 2-] (aq) + H2O (l)

**History**

What weapon/technology would be the most beneficial during WW1? Trench warfare, machine guns, field guns, rifles, poison gas, flame thrower, aircraft, tanks, U-boats, or battleships? I'm not sure but I eliminated trench warfare, flame throwers, aircraft, tanks, and u-boats

**Physics**

Using Coulomb's law to solve: Charge A is +2.0x10^-6C and charge B is +3.0x10^-6C. The two changes are 3 m apart. What is the force between them?Is the force attractive or repulsive? Okay so here's what I have so far (2.0x10^-6)(3.0x10^-6)/(3)^2 It is confusing me with...

**bio**

I think A,B, and D but I'm not 100% sure

**Designing Specialty Areas**

Oh now i get it. So A is the answer. sorry

**Designing Specialty Areas**

In my opionion, it would be the answer B because its much more useful and fun for kids (and other people) , I guess.A wooden playground structure with swings and slides is a perfect idea.

**math**

Oh thanks, Ms. Sue!

**math**

I get it now and thanks. But, one more question, how do you get 13.5? I see that my answer is wrong but I just wanted to make sure how to get 13.5. Thanks once again!