Thursday

July 24, 2014

July 24, 2014

Total # Posts: 1,454

**geometry**

A snail is crawling along a meter stick. At a certain point the snail stops. The snail needs to crawl three times as far as it has already crawled in order to be 4 cm from the end. How far has the snail already crawled?

**physics**

A person with mass 70 kg is climbing a ladder (length 6m, mass 20 kg) that leans against a smooth wall (no friction). A frictional force fs between the ladder and the floor keeps it from slipping. The angle between the ladder and the wall is 30 degrees. What is the magnitude o...

**physics**

Two identical loudspeakers are 2 m apart. A person stands 4.6 m from one speaker and 3.4 m from the other. What is the lowest frequency at which destructive interference will occur at this point?

**physics**

A 1210 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. The angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and th...

**physics**

your approach makes a lot of sense. thanks for your help!

**physics**

a 20 g bullet strikes a 0.7 kg block attached to a fixed horizontal spring whose spring costant is 5600 N/m and sets it into vibration with an amplitude of 25 cm. What was the speed of the bullet before impact if the two objects move together after impact?

**algerbra**

i cant solve this can someone help me. 19.6 + X^2/2 ={(.007852*X /.001285)^2}/2 i know the answer is 1.01 but how do i get that

**physics**

how fast does the level of water in a full 2m high, 10cm diameter tank reduces when a 4cm diameter hole is opened at the bottom?

**college physics**

how fast does the level of water in a full 2m high, 10cm diameter tank reduces when a 4cm diameter hole is opened at the bottom?

**college physics**

find the weight of a piece of wood with a density of .5 g/cm cubed. which when attached to a 5kg stone in water it will sink. the density of the stone is 3g/cm cubed

**Psychology**

Post Hypnotic suggestions are best represented by which of the following Cocercive statements commands new ideas for self improvement Criticisms

**Psychology**

Either nightmares, night terrors, daydreams, or archetypical dreams

**Psychology**

What are dreams that contain symbolic characters and appear surreal?

**health**

The primary goal of wellness is the ability to achieve A.freedom from disease. B.a multicultural view of health. C.the highest possible quality of life. D.greater control over lifestyle decisions.

**Science**

using filtration??

**Chemistry**

LOL

**college physics**

find the frictional force exerted on a 20kg block pulled slowly over a horizontal floor using a rope which makes a 30 degree angle over the horizontal. the pulling force is 100N??? i found the Fn to be 146 N what do i do from there?

**philosophy**

What are key differences between the ontological, teleological, and cosmological arguments? Identify the philosopher who you think best supports his or her argument. Explain your answer briefly.

**physics**

a sled is pulled at a velocity across a horizontal snow surface. if a force of 8.0x10 to the first power N is being applied to a sled rope at an angle of 53 degrees to the ground, what is the magnitude force of friction

**10th grade**

the circle is circumscribed by the pentagon as shown (not drawn to scale). If QZ=10, YX=9, XW=9, UW=17, and SU=10, find the perimeter of the pentagon.

**englsh 3**

we are doing conjuction and compound sentences in class, and i need help diagraming this sentence: Little Red Ridinghood and her mother packed her basket witk cookies for her grandma.

**Government**

Which of the following is not a long term trend marking the expansion of suffrage in the United States?

**5th grade math**

Thanks! It was hard when I wasnt thinking that way! Now, I am able to do the rest of my homework without any trouble! Thanks for explaining it!

**5th grade math**

I came up with the answer of 12. Common greatest factor is 12. hope I did it right!Thanks again!

**5th grade math**

My class is selling flowers. We want to arrange them so that they are all in equal rows with no row containing different types of plants. Using the numbers from the table provided, what is the largest # of plants we can put in each row? (Marigolds-48 pots, Pansies-24 pots, Pri...

**Math**

Oh that makes sense. I forgot to look at the largest common factor. Thank you, I was thinking it was every other and how many can fit onto a tray! Thank you! That may help me in my other problem as well!

**Math**

It is a story problem. Courtney has 27 chocolate chip cookies and 36 oatmeal raisin cookies. She needs to arrange them on trays. She doesnt want to combine either type of cookies and she wants the same number on each tray. What is the largest number of cookies she can hve on e...

**algebra**

solve x-5/x*x-54 -7x+8/x*x-3x-54 +x-2-x*x+12x+36

**algebra 2**

The volume ( v) of a gas in a container at a constant temperature varies inversely as the pressure (p). If the volume of a gas is 24 cubic centimeters when the pressure is 16 pounds, what is the volume under a pressure of 30 pounds?

**geometry**

A right cylinder has a radius of 3 and a height of 12. What is its surface area? If necessary, round your answer to two decimal places.

**college physics**

A typical wavelength of infrared radiation emitted by your body is 25 µm (2.5 multiplied by 10-5 m). What is the energy per photon of such radiation?

**chemistry**

use resonance theory to account for the fact that aniline(pKb 9.37) is a weaker base than cyclohexanamine(pKb 3.34)

**Chemistry**

1)Write the general equation used to determine the volume of stock required to make a given concentration of standard? Define any terms you used. ----use the 100ml flasks to create four serial dilutions of the stock 10,000uM nitrate solution that has been provided. Prepare thr...

**chemical oceanography**

Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface-----------...

**chem 1p1**

An automobile tire at 22oC with an internal volume of 20.0L is filled with air to a total pressure of 30. psi(pounds per square inch). [1 atm = 14.696 lb/in2]. What is the amount in moles of air in the tire? If the air is mostly nitrogen, how many grams of it would be in the t...

**Chemical Oceanography**

Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface-----------...

**Chemical Oceanography**

Avg PO4^3- []'s in the deep and surface ocn's are 2.11 and 0.71umolkg^-1. Calc the residence time of PO4^3- in the deep ocn considering the carbon budget(Figure below) Write the general equation, calculation and units. ------ represents a Box outline Surface-----------...

**chemistry**

write the two half-reactions for the reduction of nitrate to nitrite using Cd2+

**home economics**

okay so i have these 4 questions that i have no clue about...i asked my mom and aunts but they dont make clothes so im stuck on these 4 question i would appreciate if you could please help me 7. You're sewing a child's nylon jacket. You notice the fabric frays easily. ...

**college**

The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

**statistics**

The first class in a relative frequency table is 50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

**college chem**

how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5 please write out the eq for me

**physcis**

THIS WEBSITE IS SO SLOW. NO ONE EVER ANSWERS.

**English lit**

Have writers block. Need help with Julia Alvarez poem!? I have to write a 1000 word analysis of the Julia Alvarez poem "Ironing Their Clothes". I need help with a thesis. I have no idea what to write about! 1 year ago Additional Details With a hot glide up, then down...

**chemistry-please someone answer...i am clueless**

When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

**chemistry**

When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

**analytical chemistry**

When a monoprotic weak acid is titrated with a strong base, the titration curve contains these many inflection points: a.zero b.one c.two d.three Can you also explain why you choose your answer to this question...thanks

**college chem**

can you elaborate a little more on how to so it

**college chem**

can you elaborate a little more on how to so it

**college chem**

how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5? can someone please help me with steps to get the answer

**college chem**

what are the numbers for Conjugate acid and conjugate base

**college chem**

how did u get that can you please explain the steps

**college chem**

how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if Ka=1.8x10^-5

**math**

Thank you the site was very helpful.

**math**

I really don't understand this question and I can't seem to be able to solve it. Can anyone help me? Write a composite number between 7 and 20.

**chemistry**

A certain reaction has a delta H= -75 kJ and an activation energy of 40 kJ. A catalyst is found that lowers the Activation energy of the forward reaction by 15 kJ. What is the activation energy of the reverse reaction in the presence of this same catalyst?

**Chemistry**

Could someone tell me how I would write out trimethylammonium butanoate's structure? I think the butanoate part is CH3CH2CH2-C=O but I don't know how to add the trimethylammonium part to it.

**trig**

how do i find the amplitude, period, phase shift of y=2 cos(-4t-(-4 pi/3))

**chemistry**

1.5 x 10(10) mL

**windows XP**

On a shared folder, Read permission allows a user to display folder names, filenames, file data, and attributes; run program files; and change folders within the shared folder. True or false?

**computer science **

a bank charges $10 per month plus the following check fees for a commercial checking account: $.10 each for fewer than 20 checks $.08 each for 20-39 checks $.06 each for 40-59 checks &.04 each for 60 or more checks write a program that asks for the number of checks written dur...

**computer science **

write a program that asks for the starting time and minutes of the call, and displays the charges. the program should ask for the time to be entered as a floating-point number in the form HH.MM. for example, 07:00 hours will be entered as 07.00, and 16:28 hours will be entered...

**college chem**

. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal. A) Find the % ethanol by MASS, based on the molality. ...

**college chem**

N2O4 --->2NO2 a 1 liter flask is charged with .4 mols of N2O4. at equilibrium at 373 k, .0055 mols of N2O4 remain. what is the Kc for this reaction? please explain to me how to get the rate law for this and solving

**math**

OH,,, well i found out what i needed.. THANKS FOR YOUR HELP SO FAR!!!! :)

**math**

ya but where did you get the 4x? SORRY!

**math**

how did you get that answer from the question renee posted

**math**

If the team wins, (A) Then the team remains in the playoffs. (B) If the team stays in the playoffs (B) then the championship is within reach. (c) Therefore, if the team wins, (A) the championship is within reach.(c) It is not logically correct because The A's, C's, and...

**college chem**

why is PCl5 .1 -.o5 thats what i dont understand i know its .1 bec of the molar but why minus .05 shouldnt it be something close to .1

**college chem**

how did u get that equation

**college chem**

how did u get that equation

**college chem**

In the reaction PCl5(g) ---> PCl3(g) + Cl2 (g) 0.200 mol of PCl5 is introduced into a 2.00 liter vessel. At equilibrium, the concentration of Cl2 is found to be 0.0500 molar. Find Kc for the reaction.

**Math**

Solve each formula for N r/n + 2 = p t=100 (n+3) pv/nr = T 8a + 2n + 6b

**Math**

t=100 (n +3) PV/NR= T 8a + 2n = 6b r/n + 2 = p

**Math**

y=3x+2

**calculus**

Give the volume of the solid generated by revolving the region bounded by the graph of y=ln(x), the x-axis, the lines x=1 and x=e, about the y-axis

**math**

x+9y=18 find slope

**english**

u guys are horrible

**art**

What is the main difference from da Vinci's Last Supper and Andrea del Castagno's Last Supper?

**algerbra**

you helped me with this chem ques and you got close to 1 how did u get it please help me?You end up with a cubic equation for x. You may have to solve it graphically. Take the root that is between 0 and 1. As x -> 1, the term on the left approaches 4/[(0.5)(2-2x)^2 ] = 2.27...

**algerbra**

4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x

**question**

is kung fu a sport?

**algerbra**

4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x

**maths PLEASE HELP**

write x^2-11/5 log(2 x-1)+11/5 log(x-2)+ c as a single log im not sure how to change the brackets

**math**

4x^2/[(1.5-x)(2.0-2x)^2] = = 2.72 x 10^11 solve for x

**art**

can you change the relationship between object and background by changing their colors? what happens

**college chem**

At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the pres...

**college chem**

do you have to use limiting reagent for this problem

**college chem**

At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the pres...

**Chemistry**

Gold crystallizes in a face centered cubic structure. Using only a periodic table for refrence, determine the edge length of a gold unit cell. Show all Work.

**Chemistry**

Order the following solids according to increasing lattice energy. HgI2, CdCl2, ZnCl2 Now I get how to sort of do it, but I do not get how to do it if I'm looking at its radius if they do not provide it in the question.

**Chem**

Carbonic acid is a diprotic acid that ionizes in two stages. Write the two equations for the successive ionizations of carbonic acid in water.

**Chemistry**

Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if ZnCl2(aq) reactant is present in stoichiometric excess. Separate your answers by comma. ZnCl2(aq) + K2CO3(aq) → ZnCO3(s) + 2KCl(aq)

**algebra**

(8/125)^-(2/3)

**Chemistry**

Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of NaBr formula units formed when 126 NBr3 molecules and 192 NaOH formula units react?

**math**

simplify 8{[4(q-4)+16]-[2(5q-3)+3]}

**math**

simplify 8{[4(q-4)+16]-[2(5q-3)+3]}

**Chemistry**

thats wrong. dont listen to him

**math 4th grade**

2+7=9 7+2=9 1+8=9 8+1=9 3+5+1=9 5+1+3=9

**statistics**

What is the value of the z-scores if the area of the curve to this point is 0.887? How much of this are is between the peak of the curve and this point?

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