Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 92

**physics**

We want the distances to be equal, so 30t = 1/2 * 2.4 t^2 And now solve for t.

**materials science engineering**

Identify the [221] vector.(crystallographic directions qns) The answer given corresponds to 0.5 in x direction,0.5 in y and 1 in z. Why is it not [1 1 0.5], the simply reduced form. The ans is the reciprocal of [221], which puzzles me since this is not a plane.

**castlemont**

travis sister is 5 years less than twice his age how he can express this expression

**LMI**

I am looking for the patern of 0,2, 5,9, or sequence of them

**math**

A smart-phone is thrown upwards from the top of a 240-foot building with an initial velocity of 32 feet per second. The height h of the smart-phone after t seconds is given by the quadratic equation h=-16t^2+32t+240. When will the smart-phone hit the ground?

**math**

how would i factor 15x^2+7xy-2y^2

**math**

how do i factor 27x^3-21x^2y+108x^2-84yx

**Physics**

Two parallel plates are separated by a dielectric of thickness 2 mm with a dielectric constant of 6. If the area of each plate is 40 cm^2 and the potential difference between them is 1.5 kV, determine (a) the capacitance

**Math**

$2520

**Physics **

A charge of 5 nC is located at P(2,π/2,-3) and another charge of -10nC is situated at Q(5,π,0). Calculate the force exerted by one charge on the other. What is the nature of this force?

**grammar**

i need to correct them this sentences 4. Irony is when you expect one thing and get something else. 5. By turning off the water when you brush your teeth, you can save up to eight gallons of water per day.

**grammar**

need help with this one : 2. To enroll in film school being my primary goal, so I am always saving my money and watching for scholarship opportunities.

**grammar**

need help with this one: To enroll in film school being my primary goal, so I am always saving my money and watching for scholarship opportunities.

**grammar**

can please review the other ones

**grammar**

thanks

**grammar**

revise the following sentences to eliminate faulty sentence structure, making them clear and grammatically need help with the following sentences: An effective Web site is well designed, provides useful information, and links are given to other relevant sites. To enroll in fil...

**statistics**

Fruit flies which were heterozygous for both autosomal dominant traits aristapedia (Ar) and star eyes (S) were mated. Since aristapedia and star eyes are both lethal when homozygous and unlinked, one would predict ratio of 4:2:2:1 for Ar-S to Ar to S to wild type (+). Among th...

**physcis**

biker passes a lamppost at the crest of a hill at + 4.5 m/s. she acceleratets down the hill at a constant rate of +0.40 ,/s2 for 12 seconds.\ how far does she move down the hill during this time?..

**Science**

Which of the following phases of matter has a definite volume, but takes the shape of its container? A). Solid Phase B). Liquid Phase C). Gaseous Phase D). All the above are correct

**College Chemistry**

How many grams of steam and iron must react to produce 375g of magnetic iron oxide, Fe3So4

**History **

This question deals with liberty and power. How have people in North America acted to create, preserve, organize, and resist power from the founding of Jamestown in 1607 through the Civil War to 1865?

**math**

find the value of x. round to the nearest tenth. when the the inside is 35 degrees and the other angle is 90 the outside hypotenuse is 20 and x

**geometry**

In parallelogram TRIG, m∠R = 2x + 19 and m∠G = 4x - 17. What is m∠T

**human behavior**

teachers can improve a student's self-esteem by

**hvac**

an oil slinger is found in a reciprocating compressor employing what type of lubrication system

**hvac**

compressor cylinger unloading reduces the capacity of a reciprocating compressor by

**hvac**

when antifreeze is add to water the water specific heat

**hvac**

gas trapped in a reciprocating piston compressors clearance space expands at the beginning of the suction stroke what effect does this have on the system

**hvac**

what happens to the pressure at locations moving vertically up or down a ph constant-enthalpy line?

**science **

the temperature of the water that forms while ice melts is 32 degrees fahrenheit true or false?

**hvac**

what is the required input in watts to operate a 70 percent efficient three-horsepower electric motor

**spanish/ pleeease help me**

habra otros vendedores de aretes mis aretes son los mejores volveremos despues de mirar otros aretes

**hvac**

calculate the amount of heat required to change 5 pounds of ice at 32 degrees to water 32 degrees

**chemistry asap**

Consider the following chemical reaction: NaOH +HC1 -> NaC1 + H20 When 36.5 g of HC1 are reacted with 40.0 g of NaOH , how many grams of water are produced along with 58.5 g of NaC1?

**chemistry ASAP**

Consider the following chemical reaction: NaOH +HC1 -> NaC1 + H20 When 36.5 g of HC1 are reacted with 40.0 g of NaOH , how many grams of water are produced along with 58.5 g of NaC1?

**algebra probl 4**

i would say its 1 cause 6*5 =30 and then 30/30 is 1 .

**chemisrty ASAP**

name and give the formula for six diatomic elements.

**chemistry ASAP**

Consider the following chemical reaction: NaOH +HC1 -> NaC1 + H20 When 36.5 g of HC1 are reacted with 40.0 g of NaOH , how many grams of water are produced along with 58.5 g of NaC1?

**chem**

calories need to melt 60.0 of ice at 0 and to warm the liquid to 65 (two steps)

**Algebra help**

Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4

**Algebra help**

Match the equation 4x^6-2x^3+1=0. With a substitution from the column that could be used to reduced the equation to quadratic form: a) u=x^-1/3 b) u=x^1/3 c) u=x^-2 d) u=x^2 e) u=x^-2/3 f) u=x^3 g) u=x^2/3 h) u= x^4

**Math Help**

Mobile ad spending. The amount spent worldwide in advertising on mobile devices can be estimated by f(x) =0.4x^2+0.01x+0.9. Where x is the number of years after 2005 and f(x) is in billions of dollars. When will worldwide mobile ad spending reaches $41 billion?

**Algebra**

using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + 24y = 24 27x – 15y = -15

**Word Problem**

Find the quotient: 9a^2 – 100b^2 / 3a – 10b and the quotient: 6x^3 + 5x^2 + 2x +1 / 2x +3

**Word Problem**

A grander want to create a triangular garden in the shape of a right triangle with shortest side length x-6y ft. and the middle length side x + 6y ft. what is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplest correct mathe...

**Algebra **

The length of the side if a rectangular desk is given by 2x-7x cm. The length of the front is given by 2x +7y cm. What is an algebraic expression for the area of the top of the rectangular desk? Include correct units as part of answer.

**Math**

(5-2t^3)^2 I came up with this answer: = (-2t^3 +5) ^2 is it correct?

**Algebra Help**

Identify coefficients and the degrees of each term polynomial, and then find the degree of each polynomial. a^3b^8c^2 - c^22 + a^5c^10

**Algebra**

Multiply polynomials (n^3+8)(n-4)

**Algebra**

Identify coefficients and the degrees of each term polynomial, and then find the degree of each polynomial. a^3b^8c^2 - c^22 + a^5c^10

**Physical Science**

In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much input force is needed ...

**Physical Science**

Two cars are moving in identical conditions, one car is moving 3 times how much farther will this fast car travel?

**Physical Science**

A water balloon dropped from a dorm window does not break on impact. From what height would you need to drop the balloon to double the speed of the balloon?

**ENGLISH**

NO need for an attitude "Angel". Next time be more specific and specify that you just want make sure your commas are in the right place. You clearly wrote "please read for errors and correct them." #justsaying Here's the correct version with the commas ...

**ENGLISH**

Thank you for your request for a credit card with our store. Before we can issue a credit card, we ask that you to first finish completing the information on enclosed credit card application. When we receive it we will process your application as quickly as possible. Mail your...

**Research Practicum**

Thank you very much PsyDAG. I appreciate someone actually taking the time to review and make an honest effort in giving advice. I noticed some errors in my post that would have better clarified the research (thesis). It should have read "text-based cell phone communicatio...

**Research Practicum**

I'm conducting a research project on "to what extent are college students addicted to text-based college communication?" this is my survey I created. Is this a good survey? and how do I evaluate my responses from, let's say, 50 surveys to table data to show h...

**comsumer math**

let nickels be 'n' and quarters be 'q' n + q = 24 q = 10 + n substitute q into the equation n + (10 + n) = 24 subtract 10 from both sides 10 + 2n = 24 2n = 14 divide by 2 on both sides n=7 or 7 nickels or 35cents (7*5 cents) plug 7 back into the second equation...

**Math**

Find the quotient: x^2-49 / x+7

**math**

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

**math**

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.

**chemistry**

10.0amu

**Chemistry**

The reaction of a metal ion, M^2+, with EDTA is given in the following equation: M^2+(aq) + Y^4-(aq) <==> MY^2-(aq) The EDTA was standardized with a 0.04 M Zn^2+ solution. 25.05 mL of EDTA solution was used to titrate the Zn^2+ solution. From this standardization, calcul...

**Chemistry**

Could you try and answer my other question? (ht tp: //ww w. jiskha. com/ display. cgi?id= 1279495858) take spaces out

**Chemistry**

I figured it out... You use the formula ln(k2/k1) = (delta H)/R * [(1/T1)-(1/T2)] 1) 5.24 * 10^44 2) 8.86 * 10^-13

**Chemistry**

It's apparently a different formula since the temperature is not the standard 298 K Work for the first: delta G is equal to -514.4 kJ lnK = 514.4/(0.008314)(550) lnK = 112.5 e^112.5 = 7.17*10^48 = k - which Mastering Chemistry says is wrong

**Chemistry**

Tried that...not right

**Chemistry**

Estimate the value of the equilibrium constant at 550 K for each of the following reactions. 1) 2CO(g) + O2(g) <==> 2CO2(g) 2) 2H2S(g) <==> 2H2(g) + S2(g) Thanks in advance!

**Chemistry**

Please help, I am having trouble solving these problems at nonstandard temperatures. Methanol burns in oxygen to form carbon dioxide and water. Using the balanced reaction, 2CH3OH(l) + 3OH2(g) --> 2CO2(g) + 4H2O(g) 1) Calculate delta H(rxn) in kJ at 24 degrees Celsius 2) Ca...

**Precalculus**

Find the reference number for each value of t. t = 4 t = -8 I'm having trouble on the ones without pi. Thanks in advance!

**Precalculus**

Suppose that termial point by t is the point (3/4, (square root 7)/4) on the unit circle. Find the terminal point determined by each of the following. a) pi - t b) -t c) pi + t d) 2pi + t

**Chemistry**

At 700 K, the equilibrium constant for the reaction NO2(g) « 2NO(g) + O2(g) is Kc = 4.79×10-3 (M), and the rate constant for the reaction 2NO(g) + O2(g) ® NO2(g) is k = 3.13×10^3 M^-2s^-1. What is the rate constant for the reaction NO2(g) ® 2NO(g) + O...

**Precalculus**

The burial cloth of an Egyptian mummy is estimated to contain 57% of the carbon-14 it contained originally. How long ago was the mummy buried? (The half-life of carbon-14 is 5730 years.)

**Precalculus**

The burial cloth of an Egyptian mummy is estimated to contain 57% of the carbon-14 it contained originally. How long ago was the mummy buried? (The half-life of carbon-14 is 5730 years.)

**math**

the ratio of boys to girls in a science class is 5 to 4. If there are 8 girls in the class, how many boys are there?

**math**

1/2

**algebra**

Factor completely and then place the factors in the proper location on the grid. 4a2 - 8a - 5

**math**

18

**math**

The number of students at another university increased from 14,000 students in 1971 to 30,000 in 1975. What was the percent increase in enrollment during this period?

**math**

Marla earned $400 interest over 2 years on a $4,000 investment. Jovita earned $960 interest over 4 years on her $6000 investment. Who had the higher rate of interest? Explain.

**spanish**

the second one sentence should be written in this way: Este desastre llevó a una intensa devoción por una imagen de Cristo llamada El Señor de los Milagros.

**spanish**

the first one sentence should be writter in this way: El veintiocho de octubre de mil setecientos cuarenta y seis un poderoso terremoto causó graves daños a la ciudad y destruyo el Callao.

**math**

Lee and garth left the library at the same time and walked in opposite directions. On the same street avenue lee averaged 3 miles per hour and garth averaged 3.5 miles per hour. How long did it take them to be 3.25 miles apart?

**math**

wat do u do wen they ask to draw a dialation image at the origin and a scale factor of 2???

**algebra 1**

how do make a dialation image at the origin also with a scale factor of 2???

**College Mathematics**

Guys, could you please help me with this problem? I'm a bit lost. Consider a population that begins growing exponentially at a rate of 5% per year and then follows a logistic growth pattern. If the carrying capacity is 100 million, find the actual growth rate when the popu...

**physics**

7600e5

**social studies ABC california book**

i need help on finding letters on abc books

**government**

WHAT IS THE LIST OF CASES TO BE HEARD BY A COURT IS CALLED

**english**

how can use- in are- or I want know if is correct use both together

**Philosophy**

-- How much wood could a wood chuck chuck, if a wood chuck could chuck wood? -- How much will could Will Smith smith, if Will Smith could smith wills? Thank you for using the Jiskha Homework Help Forum although I seriously suspect this is NOT a homework question! Here are some...

**worldhistory**

i want to know why did people settle along the banks of the niger river

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