Saturday

December 20, 2014

December 20, 2014

Total # Posts: 1,549

**physics**

A thin, light wire 75.8cm long having a circular cross section 0.560mm in diameter has a 25.5kg weight attached to it, causing it to stretch by 1.12mm . what is the stress?
*December 4, 2013*

**Electrical Engineering**

Winter is coming, so I want to make a 1500 W heating coil which will plug into a 120 V wall outlet. The coil will have a cross sectional area of 0.01 cm2 and a length (when fully unwound) of 5 m. Determine the resistivity of the coil required, in Ωcm:
*November 29, 2013*

**Science**

What will be the new volume if 115 mL of He gas at 100°C and 0.993 atm is cooled to 26°C and the pressure is increased to 1.35 atm?
*November 25, 2013*

**English (concrete nouns)**

Read the passage below and answer the following question: Zach enjoyed biking to his job at Bistro Café. The early morning ride gave some serenity to his hectic schedule. Opening the restaurant allowed him to get everything ready before the rest of the crew arrived. 1....
*November 19, 2013*

**business **

Which of the following is the common balance sheet layout? A. assets = liability + owner’s equity B. profit = revenue – total expenses C. return on investment = net income owner’s equity D. gross profit margin = gross profit net sales
*November 18, 2013*

**math**

Nick has a revolving department store credit card account with an annual percentage rate of 15%. Last month’s balance on the account was $423.78. During the current month, he made pur- chases totaling $123.42 and made a payment of $100. The store uses the unpaid balance ...
*November 18, 2013*

**geometry **

If a decorative sign in the form of a circle has a diameter of 10 feet, what it the area of the sign, to the nearest square foot? A. 79 ft2 B. 16 ft2 C. 157 ft2 D. 31 ft2
*November 17, 2013*

**geometry **

What is the altitude of a rhombus if its area is 50 square meters and the length on one side is 12.5 meters? A. 10 m B. 4 m C. 7.5 m D. 12.5 m
*November 17, 2013*

**geometry **

A monument in the form of a marble cylinder has a circular base with a radius of 1.5 meters. The altitude of the monument is 3.5 meters. How many cubic meters of marble does this monument contain? A. 7.07 m^3 B. 21.21 m^3 C. 24.74 m^3 D. 6.19 m^3
*November 17, 2013*

**Chemistry**

Complete this Bronsted-Lowry reaction, placing each product by it's appropriate label. HSO4- + BrO- <--> ____ (ACID) + ____ (BASE)
*November 15, 2013*

**chemistry**

Complete and balance the precipitation reactions. Include physical states in your equations. Ba(NO3)2(aq) + CuSO4 (aq)---> K3PO4(aq)+MgCl2 (aq)---->
*November 11, 2013*

**math**

A politician claims that she will receive 59% of the vote in an upcoming election. The results of a properly designed random sample of 100 voters showed that 54 of those sampled will vote for her. Is it likely that her assertion is correct at the 0.05 level of significance? ...
*November 10, 2013*

**CHEM**

Can you please check my work? I got -4.3KJ/mol If this is not right can you tell me what I am doing wrong? Thank you! Questions. 1.a. Use Hess's Law and the measured mean enthalpy changes for the NaOH-HCl and NH3-HCl reactions to calculate the enthalpy change to be ...
*November 8, 2013*

**Psychology**

What are examples of operational defintions in a experimental Psychology research journal. For instance, would the Oxford Happiness Questionnaire (OHQ)be an example of an operational definition in a psychology experiment? If yes, how come?
*November 6, 2013*

**Social Science**

Here is the abstract of the article.. Re-examined the relationship between the Oxford Happiness Inventory (OHI) and both gender and Eysenck's dimensional model of personality by giving attention to the performance of the individual items as well as to the overall scale ...
*November 6, 2013*

**8th grade math**

please help to check my answer!!!
*October 27, 2013*

**8th grade math**

I am not sure if I did it correct, can you please check this answer for me, Ms.Sue? :) Writing equations in point-slope form: m:3, p:(-1, -2) (y-y1) = m(x-x1) y-(-2)=3(x-(-1)) y+2=3x+3 y+2-2=3x+3-2 y=3x+1
*October 27, 2013*

**Science**

Answer should be.....Air temperature near or over bodies of water is much different from that over land due to differences in the way water and land heat and cool. Properties that affect water temperature are transparency, ability to circulate, and specific heat. Am I correct?
*October 27, 2013*

**Science**

Why do the temperatures of land, air and water differ?
*October 27, 2013*

**Solar Energy Please Help**

what are the answer to the e) please
*October 26, 2013*

**Geometry**

Compare and Contrast - Describe the difference between saying that two segments are congruent and saying that two segments have equal length. When would you use each phrase?
*October 22, 2013*

**math**

How much will Pauline pay in interest if she takes out a simple interest loan with a principal of $3,900 at 7.2% for three years?
*October 1, 2013*

**physics**

A commuting student leaves home and drives to school at an average speed of 42.0 km/h. After 20.0 min he realizes that he has forgotten his homework and returns home to get it at the same average speed. It takes 7.0 min to find the report, after which the trip to school 42.0 ...
*September 8, 2013*

**calculus**

6, 23 0, 3 7
*September 8, 2013*

**Math 6th grade**

Can you give me a word problem for 11/12 / 1/4?
*September 3, 2013*

**algebra**

thank youu!
*September 1, 2013*

**algebra**

the product of the square of a number and 8? fifteen less than the sube of a number? thanks!
*September 1, 2013*

**Physics**

0.801m
*August 28, 2013*

**Lit**

what was the mother's role in the puritan family? thank you
*August 25, 2013*

**geography**

I have homework and I left my book at. School and I need some landforms
*August 18, 2013*

**Calculus**

Given that f(x)=x^8h(x) h(−1)=5 hŒ(−1)=8 Calculate fŒ(−1).
*June 13, 2013*

**Calculus**

Find a cubic function y=ax3^+bx^2+cx+d whose graph has horizontal tangents at the points (-1, -16) and (1,12).
*June 13, 2013*

**Algebra 3 and trig**

An ocean liner is 177 miles due west of lighthouse A. Lighthouse B is 265 miles due south of lighthouse A. Find the distance from lighthouse B to the liner and the bearing of the ocean liner from lighthouse B.
*June 12, 2013*

**Chemistry**

Use Hess's Law to find the change in heat of 2C(graphite)+H2(g)-->C2H2(g)? Given: C(graphite) + O2(g) --> CO2(g) change of heat rxn = -393.5 kJ 2H2 (g) + O2(g) ---> 2H2O (l) change of heat rxn = -571.6 kJ 2C2H2 (g) +5O2(g) ----> 4CO2(g) +2H2O (l) change of heat...
*May 5, 2013*

**Calulus**

At what interval is 2x^3+0x^2-54x+6 increasing?
*May 2, 2013*

**chemistry**

can you convert the grams to liters of water using the conversion factor of 22.4 liters in one mole?
*April 30, 2013*

**physics**

A block of mass 8.50 is sliding along a smooth surface when it encounters a 0.800 long region of roughness with =0.310. The block emerges from the rough patch at a reduced speed of 5.00 and continues on.
*April 26, 2013*

**physics**

A solid disk of radius 6.50cm and mass 1.65kg , which is rolling at a speed of 2.60m/s , begins rolling without slipping up a 10.0 slope.How long will it take for the disk to come to a stop?
*April 21, 2013*

**orchestra programs????????**

orchestra programs for teens in rockland county??? like a group of teens playing songs and they perform it (concert)
*April 20, 2013*

**theology class????**

I'm Christian and I'm applying to a catholic high school (due to the budget cuts in my district). The thing is that I'm required to take theology (Religion class) for four years of high school. ... I'm just wondering, it's theology interesting, fun... and ...
*April 20, 2013*

**distributive property**

What is the answer to this problem -7(10+7f)
*April 17, 2013*

**Algebra**

Find the distance d(P1,P2) between the points P1 and P2 P1=(-1,5);P2=(2,4) d(P1,P2)=
*April 14, 2013*

**Find the equation....**

Find the equation with the given properties. Express the equation in slope intercept form. Containing points p=(-4,-2) and Q=(-2,1) What is the equation of the line? y=
*April 14, 2013*

**geography**

What regions have low or high annual precipitation?
*April 13, 2013*

**Calculus**

Below is a table containing information about differentiable functions f and g: x: -2 -1 0 1 2 f(x): 4 3 5 2 1 f'(x):1 4 2 5 3 g(x): 5 2 1 3 4 g'(x):3 5 4 1 2 F(x) + g(x), G(x)=f(x) * g(x), H(x) = g(x)/f(x) Find F'(-1) Find G'(0) Find H'(-2)
*April 11, 2013*

**Calculus**

A man starts walking north at 4 ft/sec from point P. Five minutes later a woman starts walking south at 5 ft/sec from a point 500 ft due east of P. At what rate ae the people moving apart 15 minutes after the woman starts walking? Draw a diagram. 1) What rate is given? State ...
*April 11, 2013*

**Combinations and Permutations, Steve and Ms. Sue☺**

Hey izzy Slim shady is correct ALL THOSE ANSWERS ARE CORRECT
*April 10, 2013*

**third grade math**

Define 3-fracture
*April 9, 2013*

**Find the intercepts**

Find the intercepts and graph the equation. 3x+4y=12
*April 9, 2013*

**Finding the midpoint**

Find the midpoint of the line segment joining the points P1 and P2 P1=(3,2) P2=(-5,7) The midpoint is=
*April 8, 2013*

**chemistry**

A 337-\rm mL sample of unknown \rm HCl solution reacts completely with \rm Na_2CO_3 to form 17.1g \rm CO_2. What was the concentration of the \rm HCl solution?
*April 7, 2013*

**chemistry**

What volume of 2.25\it M \rm HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.200\it M \rm Na_2CO_3?
*April 7, 2013*

**math**

what is 25.515 rounded to the nearest cent?
*April 5, 2013*

**physics**

a cannon with a mass of 1200 kilograms is positioned at the edge of a cliff where it fires a 100 kilogram cannonball horizontally. The cannonballs initial speed is 35 meters per second. What is the recoil of speed of the cannon.
*April 4, 2013*

**SCIENCE 8R - HELP!**

...G.....g G..GG...Gg g..Gg...gg G - Blue g - Black G - Dominant g - recessive Homozygous - ????????? Heterozygous - ??????? Please help ..... I need to find the percentage of Homozygous and Heterozygous and find which on is Homozygous and Heterozygous! (I have to make up a ...
*March 31, 2013*

**lit**

what are the symbols of the story tuesday siesta?
*March 26, 2013*

**Lit**

THANK YOU!
*March 25, 2013*

**Lit**

oh! and can u define what characterization is?
*March 25, 2013*

**Lit**

what is the style of the book tuesday siesta? thanks!
*March 25, 2013*

**statistics**

Are Chicken based dishes more populat than Pizza to a level which is statistically significant at the 95% confidence level? What figures do i have to look at to work it out? Thanks
*March 25, 2013*

**geometry**

From point Q on circle P, an arc is drawn that contains P. Find the measure of the arc AQB that is cut off.
*March 14, 2013*

**Physics**

Electrons are accelerated to reach a kinetic energy of 250 eV (= 4.0 x 10-17 J). If the acceleration is done in a distance of 0.20 m, what is the magnitude of the electric field causing the acceleration?
*March 12, 2013*

**physical**

Hey everyone... hoping I can get an answer soon... I have a PD/H/PE homework assignment on which we have to create an collage on Physical, Spiritual, Emotional, Social and Mental health. I am stuck on a definition for spiritual health, me not being a very big know-it-all in PD...
*March 5, 2013*

**SCIENCE 8 PLEASE HELP!!!!!! (ASAP!)**

THANK YOU! :)
*March 4, 2013*

**Pre Calculus**

A contractor is to fence off a rectangular field along a straight river, the side along the river requiring no fence. What is the least amount of fencing needed to fence of 30,000 meters squared?
*March 4, 2013*

**ALGERBRA_HELP_ASAP**

.I need to find a rule for .the inputs: 1,2,3,4 and the outputs:3,9,18,30. Please Help! Thanks
*February 19, 2013*

** Physics !**

Paul pulls a stalled car with a rope 493-m with a force of 267-N, calculate the powered generated by Paul after 9 minutes pulling it down the road.
*February 18, 2013*

**Science 8R - help....!!!!**

THANK YOU! :)
*February 13, 2013*

**Science 8R - help....!!!!**

What happens during a solar and a lunor eclipse?
*February 13, 2013*

**Chemistry**

The freezing point of ethanol is -114.6 C and its Kf value is 2.00 C/m. What is the freezing point for the solution prepared by dissolving 50.0 g of glycerin (C3H8O3) in 200.0 g ethanol? I used Change in temp=Kfm kf=2.00 I calculated m to be 2.1736. I ended up the answer of -...
*February 13, 2013*

**Math**

Which binomial is a factor of f(x) = x^4 27x^2 14x + 120? (x 4) (x 2) (x + 5) (x + 6)
*February 5, 2013*

**Math 8R - HELP! (PLZ!)**

can someone please help me because I'm really have a hard time with my homework. I understand some it but .... some problems are in different forms... and I looked in my notes (actually we don't have any notes JUST EXAMPLES! :( ) and..... omg it's hard please ...
*January 31, 2013*

**Math 8R - HELP!**

2x + 3y = 6 4x + 6y = 12 please help (I DO NOT want to discuss the other problem...)
*January 31, 2013*

**English 8R - help!**

Have anyone watch "Forrest Gump"? (please answer this question...I need help with something)
*January 31, 2013*

**Math 8R - HELP!**

5x + 2y(0-y) = -3 don't you minus 2y on both sides (under -y)????
*January 31, 2013*

**Math 8R - HELP!**

bobpursley is a teacher on jiskha hw help
*January 31, 2013*

**Math 8R - HELP!**

i got -0.6.... i don't think that's the answer for x... I'm solving for x and then I have to su solve for y
*January 31, 2013*

**Math 8R - HELP!**

yes you don't have to give me the answer I just wanted you to write it out so that I can understand and figure out the answer myself.
*January 31, 2013*

**Math 8R - HELP!**

i know but can you please help me do the rest
*January 31, 2013*

**Math 8R - HELP!**

Multi-Step Equations Systems of Equations x + y = 0 5x + 2y = -3 this is what i got so far.... x + y = 0 ----> x = 0 - y 5x + 2y(0-y) = -3 please help!!!!
*January 31, 2013*

**MATH 8 HELP!**

Y = -x + 10 y = x + 2
*January 30, 2013*

**physics**

A cement block accidentally falls from rest from the ledge of a 51.7-m-high building. When the block is 14.9 m above the ground, a man, 2.05 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way?
*January 27, 2013*

**Math 8 - HELP! (PLZ!) **

7 times a number decreased by 4 is the same as 6 plus twice that number my answer - 7n - 4 = 6 + 2n am i correct and can you help me solving it, please!!! thank you! :)
*January 23, 2013*

**Math 8 - HELP!**

Thank You! :) You can delete my other post (sorry about that...)
*January 23, 2013*

**Math 8 - HELP!**

7 times a number decreased by 4 is the same as 6 plus twice that number my answer - 7n - 4 = 6 + 2n am i correct and can you help me solving it, please!!! thank you! :)
*January 23, 2013*

**Math 8 - HELP!**

Write the equation of the line that passes through the points (1,6) and (-1,-2) please help!!!!
*January 22, 2013*

**Science 8R - help!**

ok, Thank You! :)
*January 22, 2013*

**Science 8R - help!**

HW - Name an example of the 6 simple machines that are in your home. So I have to write an example each or write an example that is an example for ALL six simple machines.
*January 22, 2013*

**Government & Politics**

All of the above
*January 22, 2013*

**Math 8 - HELP!!!**

Give an example of a rational number between 1.5 and 1.75 Ok.. I SERIOUSLY need help with this problem.
*January 17, 2013*

**Please help -biology**

YOUR WELCOME! :)
*January 17, 2013*

**Please help -biology**

Because they both have different bonds. Water contains stable O-H bonds, whereas hydrogen peroxide contains a much less stable O-O bond as well. Because there is an extra bond in hydrogen peroxide, the molecule as a different geometry than the water molecule. This already ...
*January 17, 2013*

**Math 8 - HELP!!!**

THANK YOU! :)
*January 17, 2013*

**Math 8 - HELP!!! **

A 5 7/8 ft section of wood was cut from 9 1/2 ft board. How much of the original board remained.
*January 17, 2013*

**math**

how many red beads would there be a pattern with 51 blue beads?
*January 14, 2013*

**Chemistry**

0.796 atm
*January 9, 2013*

**SS8R - help!!!!**

THANK YOU! :)
*December 19, 2012*

**SS8R - help!!!!**

What were the various ways in which Progressives reformed society in the following areas: voters' rights: 16th and 17th amendment big business: sherman anit-trust act public works: !?!?!?! woman rights: less corrupt + morally superior education: john deney (teach and ...
*December 19, 2012*

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