Friday

November 27, 2015
Total # Posts: 88,353

**science '**

a book with an area of 0.0800 m/2 and a weight of 1.00 n is lying on the table . find the pressure on the surface of the table caused by the weight of the book.
*October 26, 2015*

**schience **

a book with an area of 0.0800 m/2 and a weight of 1.00 n is lying on the table . find the pressure on the surface of the table caused by the weight of the book.
*October 26, 2015*

**Chem 2 lab**

the acid dissociation constant for acetic acid is 1.85x10^-5. Calculate the pH at the equivalent point and the pH at one-half the equivalence point for the titration of 25.00 mL of 0.100 M acetic acid with 0.100 M NaOH? Its been a little while since ive done one of these ...
*October 25, 2015*

**Physics I**

torque=force x arm = 40j x (2i-5j+3k)=-80k+120i check that.
*October 25, 2015*

**Algebra 2**

No, I need help with making the graph
*October 25, 2015*

**Math**

Find the solution. 1. sqrt2 sin x + 1 = 0 My ans: x = 5pi/4 + 2npi and 7pi/4 + 2npi 2. sec x - 2 = 0 My ans: x = pi/3 + 2npi and 5pi/3 + 2npi
*October 25, 2015*

**Calculus**

I am looking for 3 D volumes. Finding A(y) through similar triangles is difficult in terms of 3 D. I still do not understand how to do them despite looking at the book examples. I know that after finding A(y) I have to integrate it to find the volume but the first step is to ...
*October 25, 2015*

**Calculus**

Hello, Tutors! I am struggling on how to do problems related to finding the volume using integrals. Could you please help me? Any easy-to understand resources? Thank You for all your help. I am thankful for you tutors!!!!!!!
*October 25, 2015*

**chemistry **

what is the anion and cation of Na2CrO4
*October 25, 2015*

**Calculus**

1. Calculate the population within a 7-mile radius of the city center if the radial population density is ρ(r) = 5(5 + r2)1/3 (in thousands per square mile). (Round your answer to two decimal places.) 2. A population of insects increases at a rate 280 + 8t + 1.5t2 insects...
*October 25, 2015*

**please help Ms Sue !!!!**

i think it's b
*October 25, 2015*

**Geography**

What economic impact will this Hurricane have on the population of Mexico is my question
*October 25, 2015*

**Geography**

Impact and severity of Hurricane Patricia.
*October 25, 2015*

**math 1350**

Lori has an equal number of dimes, nickels, and pennies in her coin collection. If the total value of the coins is $12.16, how many of each coin does she have?
*October 25, 2015*

**AP WORLD HISTORY HELP**

1. What role does symbolism play in the Islamic religion? 2. What aspect of Islam is characterized by this description of the Black Stone? 3. Is there anything in other religions similar to the significance, which the Black Stone in the Ka’aba holds in Islam?
*October 25, 2015*

**AP WORLD HISTORY HELP**

to help understand what they are asking?
*October 25, 2015*

**AP WORLD HISTORY HELP**

I read this section, still dont get it. Respond to the following questions from Duiker p. 186. Please be sure that you respond to each question fully for full credit. Please note: in order to respond to the following questions you should have read the chapter and have an ...
*October 25, 2015*

**Math**

Thanks Steve
*October 25, 2015*

**Math**

Find the exact value of the trig expression given that sin u = -5/13 and cos v = -4/5. u and v are in the second quadrant. cos(v - u)
*October 25, 2015*

**SOC 320**

Policy Instruments described by the authors include all of the following except
*October 25, 2015*

**SOC 320 Public policies and Social services**

With respect to the Kyoto Protocols, the Clinton-Gore administration
*October 25, 2015*

**Math Answer Check**

1. Find the exact value of the expression. cos pi/16 * cos 3pi/16 - sin pi/16 * sin 3pi/16 My ans: sqrt2/2 2. Find the exact value of the sin of the angle. 17pi/12 = 7pi/6 + pi/4 My ans: (sqrt2 - sqrt6)/4
*October 25, 2015*

**physics**

A mass is pushed over a surface by a 19 N force that acts somewhat downward at an angle of θ = 45° to the horizontal as shown in the figure below. The mass is 3.0 kg and the coefficient of friction between the mass and surface is 0.25. (a)What is the magnitude of the ...
*October 25, 2015*

**probabilities**

a
*October 25, 2015*

**early childhood development**

Name and describe three areas or kinds of guidance, support, or training you will need to become comfortable in working with families?
*October 25, 2015*

**Physics**

Water emerges vertically from a hose at ground level and rises to a height of 3.2 m. (a) At what speed does the water emerge from the nozzle? (b) How long is a given drop in the air?
*October 25, 2015*

**Government**

Which elections receive a high voter turnout and which ones receive a low turnout
*October 25, 2015*

**Math **

There are 90 students in a classroom. How many relationships are there in this classroom? Show how you got this. Hint: Consider this 2 students in the class would be 1 relationship, whereas 7 students in the class would yield 21 relationships. What I think: I'm super stuck...
*October 25, 2015*

**government**

how can political parties affect voter turnout
*October 25, 2015*

**Urgent physics help**

A plane flies 230 mph at 60 degrees north of west for 2.5 hours how far did the plane travel? how far west did it go? how far north did it go? how fast did it go west?
*October 25, 2015*

**Quick Physics check**

Add together these vectors: V1= 60 Newtons at 45 degrees N of W; V2= 5Newtons at 30 degrees S of E Is it 61.49N@40.50 n of w?
*October 25, 2015*

**Physics**

A ball is dropped from a height of 20 meter and rebounded with a velocity which is 3 by 4 of the velocity with which it hits the ground. What is time interval between the first and second bounces?
*October 25, 2015*

**Math**

Write the expression as the sine, cosine, or tangent of an angle. cos 0.96 cos 0.42 + sin 0.96 sin 0.42 Is this cos 0.54?
*October 25, 2015*

**Chemistry**

How do I find the number of grams of .25 moles of neon?
*October 25, 2015*

**math**

208 days
*October 25, 2015*

**math**

if you walk around the earths equator with an average speed of 5 miles per hour how many days would you need to walk to come back to your starting point
*October 25, 2015*

**Math Answer Check**

Thank you so much!
*October 24, 2015*

**Math Answer Check**

csc^2 x = 5 over the interval 0 <= x < 2pi 1. 26.57 degs 2. 153.43 degs I think the solutions in the third and fourth quadrants don't work because they don't fall in the interval.
*October 24, 2015*

**Government**

Why is the level of voter turnout vitally important in elections?
*October 24, 2015*

**physics**

A baseball is thrown at an angle of 21 ◦ relative to the ground at a speed of 22 . 7 m / s. The ball is caught 35 . 1474 m from the thrower. The acceleration due to gravity is 9 . 81 m / s 2 . How long is it in the air?
*October 24, 2015*

**MATH**

Simplify the expression. Use only positive exponents. (−2x^−3 y^−2 )^−1 = _________________ (x^3y^3z^3 ) −4
*October 24, 2015*

**Government**

How does the public express their political views?
*October 24, 2015*

**Chemistry**

Q=mcΔT m=Q/cΔT m=43000/(4.814)(100-25)
*October 24, 2015*

**Physics**

As shown in the figure below, we have three air carts (labeled #1, #2, and #3) on an air track. The carts are equipped with spring bumpers so that all collisions are elastic. The masses of the carts are m1 = 5m, m2 = 2m, and m3 = m. Initially, cart #1 is given a velocity to ...
*October 24, 2015*

**Chemistry**

Q=mcΔT Q=mc(Tf-Ti) (Tf-Ti)=Q/mc Tf=(Q/mc)+Ti Tf=(479/(89.0)(4.184))+8.00
*October 24, 2015*

**History**

I put Because much federal governments funding depends on population data is this correct
*October 24, 2015*

**History**

why is population data an estimate rather than an actual count
*October 24, 2015*

**addition fraction**

1/3 3/4 3/10=
*October 24, 2015*

**addition fraction**

1/3 3/4 3/10
*October 24, 2015*

**math**

Three cards are selected at random without replacement from a well-shuffled deck of 52 playing cards. Find the probability of the given event. (Round your answer to four decimal places.) Three cards of the same suit are drawn
*October 24, 2015*

**Reading**

Thank you!
*October 24, 2015*

**Reading**

I hsve a hard time understanding this reading: "Mediating Infanticide" by Charles Briggs. I do not understand what he is arguing! What is communicable cartography in Briggs' terms?
*October 24, 2015*

**Math**

what is an equivalent ratio for 65:390
*October 24, 2015*

**AP world history help**

Which of the following aided in the adoption of Christianity in the Roman Empire? I. there was no painful initiation rite II. Jesus was a human figure III. initiation was done via baptism IV. decline of Hinduism
*October 24, 2015*

**math**

thank you is x=41
*October 24, 2015*

**math**

The sum of the ages of Diego and Carissa is 67 years. 11 years ago, Diego's age was 2 times Carissa's age. How old is Diego now? Translate the given information into an equation using the variable x = current age of Diego. Your equation should contain 67, 2, and 11. Do...
*October 24, 2015*

**Physics!!!!222**

2. A 75.0-kg painter climbs a ladder that is 2.75 m long leaning against a vertical wall. The ladder makes a 30.0° angle with the wall. (a) How much work does is done by gravity on the painter? (b) Does the answer to part (a) depend on whether the painter climbs at ...
*October 24, 2015*

**Physics!!!!**

3. You push your physics book 1.50 m along a horizontal table- top with a horizontal push of 2.40 N while the opposing force of friction is 0.600 N. How much work does each of the following forces do on the book: (a) your 2.40-N push, (b) the friction force, (c) the normal ...
*October 24, 2015*

**Physics**

2. A 75.0-kg painter climbs a ladder that is 2.75 m long leaning against a vertical wall. The ladder makes a 30.0° angle with the wall. (a) How much work does is done by gravity on the painter? (b) Does the answer to part (a) depend on whether the painter climbs at ...
*October 24, 2015*

**Physics**

1. A student librarian picks up a 2.2 kg book from the floor to a height of 1.0 m. He carries the book 5.3 m to the shelves and places the book on a shelf that is 0.65 m above the floor. How much work does he do on the book?
*October 24, 2015*

**use auxilary verb in bracket**

i wish to take a break.i'm so tired.(do)
*October 24, 2015*

**algebra**

0.036^2-2.8x+62.56=57^2
*October 24, 2015*

**algebra**

thank you is the answer 65
*October 24, 2015*

**algebra**

In a northern European country, the formula y=0.036x 2 −2.8x+62.56 models the number of deaths per year per thousand people, y , for people who are x years old, 40¡Üx¡Ü60 . Approximately how many people per thousand who are 57 years old die each ...
*October 24, 2015*

**Math**

sqrt3/2?
*October 23, 2015*

**Math**

sin((7pi/6) - (pi/3)) = - sqrt3?
*October 23, 2015*

**Math**

Does 1 - (tan 25 degs)(tan 110 degs) equal 1? If so, how?
*October 23, 2015*

**Math**

How can I find the reference angle for sin x = +/- 1/sqrt 5?
*October 23, 2015*

**Please Help with Physics ASAP!!**

Okay, so I totally don't understand what to do with these three. Could you please show how to solve? I don't need to see the solution, just what steps I need to take for each (every smallest detail please). 1. A box weighing 150 N is at rest on a horizontal floor. The ...
*October 23, 2015*

**science**

A building is being demolished with a wrecking ball. I want to cross the street where it is swinging without risking being hit.If the cable attached to wrecking ball 20 meters long do i have to cross if i start as soon as the wrecking ball and cable are straight up and down
*October 23, 2015*

**College Physics**

A student throws a 140 g snowball at 7.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall if the duration of the collision is 0.19 s ?
*October 23, 2015*

**Language Arts**

i am in 8-4
*October 23, 2015*

**S.S**

@Ms.Sue
*October 23, 2015*

**S.S**

@Ms.Sue
*October 23, 2015*

**English**

Part 1 of "Alone" can best be identified as an example of... A-Ballad B-Sonnet C-Lyric Poem D-Narrative poem (((((((i havent read this poem so i dont know can anyone give me the link to these poems)))))))))) "Alone" "The Nobel Prize" and "...
*October 23, 2015*

**English **

I need tons of help on my homework i missed a day and all these questions dont make any sense to me can someone help =(
*October 23, 2015*

**French**

I think I'll tweak my French sentence a bit. Après que l’invité est venu à la maison, il a vu que le chat a dormi sur le lit. "After the guest came home, he saw that the cat slept on the bed."
*October 23, 2015*

**French**

Please check this sentence for grammar. Après que l’invité est venu, il a vu que le chat a dormi sur le lit.
*October 23, 2015*

**AP WORLD HISTORY TEST TODAY!!!**

From what I know, man migrated from Africa, but since the first civilization was in the Fertile Crescent, I'd go with that choice.
*October 23, 2015*

**AP WORLD HISTORY TEST TODAY!!!**

thanks
*October 23, 2015*

**AP WORLD HISTORY TEST TODAY!!!**

Man is believed to have migrated from what region of the earth? A. southeast Asia B. Iberian Peninsula C. Fertile crescent D. Indo-Europe E. Mediterranean Basin I NEED A FAST RESPONSE!! THANK YOU
*October 23, 2015*

**physics**

When rearranging a dorm room a student does 291 J of work in moving a desk 3.4 m. What was the magnitude of the applied horizontal force?
*October 23, 2015*

**Math**

Is there supposed to be a different method since it says "algebraically"?
*October 23, 2015*

**Math**

How do I solve csc^2 x = 5 algebraically over the interval 0 <= x < 2pi?
*October 23, 2015*

**Microeconomic**

Consider the market for peanuts. Initially, the quantity supplied is 35 and at $2.50 each. Then a blight occurs that destroys a significant portion of peanut crops. This shifts the supply curve leftward. The new quantity supplied is now 30 and at $3.50 each. Calculate total ...
*October 22, 2015*

**ENVIRONMENTAL SCIENCE**

1.4. The population of endangered Partula snails on a small island is currently 325. Conservation measures have been implemented and the population is growing exponentially at a rate of 0.83%. In what year is the snail population expected to reach the conservation goal of at ...
*October 22, 2015*

**Chemistry Labwork **

The uncertainty in each measured value of K is about + 10%. Are all of your measured values of K within the range (+ 10%) of the average K value? My K values are 343, 342, 341, and 344. My average is 342. I used 3 significant digits. How do I answer this question? I know I am ...
*October 22, 2015*

**algebra**

focus (2,3) Vertex (1,-2)
*October 22, 2015*

**History**

How many Latin American countries are there
*October 22, 2015*

**math**

sorry is -6x^2
*October 22, 2015*

**math**

find the degree of 6x^2
*October 22, 2015*

**Ratios**

Please Help me figure out HOW to do this students in classes, displayed below, ate the same ratio of cheese pizza slices to pepperoni pizza slices. Below is the Slices of Cheese Pizza column from the table. Fill it in with fractions or mixed numbers (like 7 1/2) Slices of ...
*October 22, 2015*

**Quick English check **

Used alloyed, comprehend, comprised, cower, empathize, formidable, homogeneous, partisan, ponderous, and wary to complete these sentences. Please correct me if I'm wrong! 1. Winston Churchill wrote of the fascination people have for "the tiny things, the sharp agate ...
*October 22, 2015*

**Math**

90% of 20
*October 22, 2015*

**physics**

A person walks 28.8 degrees north of east for 2.06 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? Answer in units of km work: 2.06sin28.8??? Don't know where to go
*October 22, 2015*

**Physics **

what quantities are needed to describe motion -is it to know how position changes with time what are 2 pictorial methods to describe motions??
*October 22, 2015*

**Math**

An adult has about 5 quarts of blood when he donates a pint for his sick friend what fraction of his blood does he give away
*October 22, 2015*

**science**

can some help pls
*October 22, 2015*

**science**

Fill in the blank with the word or phrase that best completes the statement or answers the question. 14. The scientific name for a plant that reproduces with flowers is a(n) (1 point) angiosperm* 15. At certain times of the year, the male sage grouse can be seen inflating the ...
*October 22, 2015*

**Algebra**

Solve for g: R=(gs)/(g+s) I don't usderstand how to isolate the g from the rest of the variables
*October 22, 2015*