Thursday

December 18, 2014

December 18, 2014

Total # Posts: 189

**physics**

In compressed state, a spring 3.00 meters long hanging from the ceiling has a potential energy of 2.0 joules. If the entire potential energy is used to release a ball of mass 1.2 kilograms vertically downward, then what is the kinetic energy of the ball when it reaches the ...
*December 17, 2014*

**Science **

Calculate the denstiy of a block if the volume is 20.0cm3 and the mass is 40.0 g
*December 10, 2014*

**Physics**

You throw a ball towards a wall at 15ms-1, and it bounces back at 10ms-1. What is the total change in velocity? (the answer is not 5m/s)
*December 3, 2014*

**math**

Paul has two thirds as many postcards and shawn the number of postcards shawn has three fifths of a number of postcard tim has if three boys have 280 postcards altogether how many more postcards does Tim have than Paul
*November 11, 2014*

**Physics**

A box weighing 178N slides down a ramp with an initial velocity of 0.5m/s^2. The ramp has an angle of 24 degrees and is 3m long. What is the acceleration of the box? I know that F=ma but how do I find a?
*November 9, 2014*

**Organic Chemistry**

Thank you.
*November 3, 2014*

**Organic Chemistry**

Also, the solvent used for extraction is ethyl acetate. So, the organic mixture to be separated by extraction dissolved in ethyl acetate.
*November 3, 2014*

**Organic Chemistry**

What type of info must I supply? Or is it too much info to be asked? If I can reclarify.. In the experiment, I am separating an unknown organic mixture of two solids by extraction. From this I will get the Basic layer, and acidic layer, both will be the source for isolating ...
*November 3, 2014*

**Organic Chemistry**

Hi, I did an extraction experiment. I've got my basic layer, and getting my acidic salt in return. To do this, I am instructed to first "add a small amount of NaCl to help with the product precipitation". Then, again I am instructed to add HCl to "acidify&...
*November 3, 2014*

**Statistics**

Carrie attained a score of 650 on the verbal section of her SAT. The mean grade was a 500 with a standard deviation of 100. What percentage of test takers scored below and above Carrie?
*October 30, 2014*

**Math**

greatest number means GCF? If your answer is yes, the answer will be 7?
*August 20, 2014*

**Math**

Dominic collects sports science fiction and history books. He has 21 books about sports, 35 books about science fiction, and 14 about history. He wants the same number of each type of book on each shelf. What is the greatest number of each type of book on each shelf?
*August 20, 2014*

**Algebra**

Shelly made 5 more sales calls than Clark . Shelly and Clark made a total of 33 sales calls. How many sales calls did each make .
*June 12, 2014*

**Macroeconomic **

Income taxes create a difference between the interest rate paid by companies and received by lenders. These taxes___________ saving, investment, and the growth rate of real GDP. A. Do not affect B. Lower C. Encourage, but may not change D. Increase The answer is C
*June 10, 2014*

**Macroeconomic **

An increase in the capital stock will: A. Shift production function downward. B. Shift the production function upward C. Flatten the production function D. Steepen the production function The answer is B?
*May 30, 2014*

**Macroeconomic **

Suppose that a market for a product is in equilibrium at a price of $5 per unit. At any price above $5 per unit. A. There will be an excess demand for the product. B. There will be an excess supply of the product. C. The quantity supplied of the product will be less than the ...
*May 29, 2014*

**Macroeconomic**

Thank you
*May 27, 2014*

**Macroeconomic **

All of the following statements are true of the Federal Reserve EXCEPT: A. Acts as the central bank for all countries in the world. B. Along with the Board of Governors, the chairperson of the Federal Reserve determines monetary policies and strategies based on state of ...
*May 27, 2014*

**Intro to computers**

Which type of updates should be installed in a test environment before being installed in a live enterprise environment.? A. Updates for Wkndows XP B. Recommend Updates C. Service Packs D. Security updates
*May 12, 2014*

**Finance**

The projected revenues and costs that form the basis of the potential for a project's acceptance or rejection are estimates of ______________. A. Future activity B. Past activity C. Known activity D. Current activity
*April 8, 2014*

**algebra **

Matthew would like to join an online book club that costs $84 per year. If he signs up for an automatic renewal, he will get 5% off his membership. If he signs up in July, he can get an additional 20% off. In addition, for every 2 people he refers to the club, he can get $5 ...
*March 8, 2014*

**Math**

pinche steve. ponete esmart
*February 22, 2014*

**Math**

if u cut the circle in half, and put the shapes on the side of the square u make a heart steve
*February 22, 2014*

**Physics**

two objects attract each other gravitationally with a force of (2.5)(10^-10)N when they are 0.25m apart. Their total mass is 4.0 kg. Find their individual masses.
*February 14, 2014*

**ASU**

Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is the magnitude of the force on an electron between the plates? N (c) How much ...
*February 7, 2014*

**algebra**

what value makes the polynomial factor as a perfect square x+12+?
*February 5, 2014*

**Accounting**

1.Calculate Genentech’s annual sustainable growth rate for the years 2003–2007. 8. a. Genentech’s sustainable growth rates are 2003 2004 2005 2006 2007 Sustainable growth rate (%) 10.6 12.0 19.0 28.6 29.3 2. Did Genentech face a growth management challenge ...
*November 2, 2013*

**MATH**

Cool
*October 17, 2013*

**Calculus 1**

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing at 4:00pm.
*October 10, 2013*

**Calculus 1**

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing at 4:00pm.
*October 10, 2013*

**Calculus 1**

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing at 4:00pm.
*October 10, 2013*

**Calculus 1**

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing at 4:00pm.
*October 10, 2013*

**Calculus 1**

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing at 4:00pm.
*October 10, 2013*

**history**

i need to write this as a essay can you help me split up the ideas into paragraph and the opening and conclusion
*September 21, 2013*

**history**

Im living for 15 years in perfect background and with a good education and so are all the kids that live around me. Another reason my parents aren't college graduates and they've found jobs to make an affordable living with everything needed for themselves,for me,and ...
*September 21, 2013*

**history**

im living for 15 years in pefect background with a good education and so are all the kids that liv around me also that my parents arent college graduates and theyve found jobs to make a affordable living with everything needed and to plan vacations and their son is going to ...
*September 21, 2013*

**history**

yes iam but i cant think of any resaons can you give me hints
*September 21, 2013*

**history**

why im optimistic about our nations future can you help me i need to write a essay about this paragraph
*September 21, 2013*

**english**

your always here so on your time
*September 18, 2013*

**english**

off curiosity ms sue why do you do this
*September 18, 2013*

**question**

im a freshmen and i wan to become a architect what courses should i take in highschool and is it beter to take statistics or precalculas
*September 17, 2013*

**chemistry**

what is the density of unknown material with a mass of 17.44g if the dimensions are length 2.2cm, height 1.7cm, and width 4.1cm
*September 17, 2013*

**math**

There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?
*September 15, 2013*

**geometry**

There is something wrong with this definition for a pair of vertical angles: “If AB and CD intersect at point P, then APC and BPD are a pair of vertical angles.” Sketch a counterexample to show why it is not correct. Can you add a phrase to correct it?
*September 15, 2013*

**math**

0.316 in expanded form
*August 6, 2013*

**chem 223**

What additional volume of 10.0 M HCl would be needed to exhaust the remaining capacity of the buffer after the reaction described in Part B?
*July 22, 2013*

**kimball**

How many kilojoules of heat must be transferred to a 480-g aluminum pizza pan to raise its temperature from 22 degrees celsius to 234 degrees celsius?
*May 28, 2013*

**Chemistry**

we burn 12.50L of ammonia in 20.00L of oxygen at 500 degrees celsius. What volume of nitric oxide, NO, gas can form? what volume of steam, H2O (g) is formed? Assume that all gases are at the same temperature and pressure, and that the limiting reactant is used up 4NH3(g) + 5O2...
*May 6, 2013*

**Chemitry**

calculate the volume of 1.07M phosphoric acid solution necessary to react with 22.9 ml of 0.150M Mg(OH) 2H3PO4 +3Mg(OH)2 ==> Mg(PO4)2 + 6H20
*May 1, 2013*

**Chemistry**

calculate the volume of 1.07M phosphoric acid solution necessary to react with 22.9 ml of 0.150M Mg(OH)
*May 1, 2013*

**Chemistry**

what happens to a battery when it is "recharged"
*April 21, 2013*

**Chemistry**

4, Assign oxidation states for the two elements in the compound OF2. Explain the rules that you use. 5. For each of the following oxidation-reduction reactions of metals and nonmetals, identify the element that is oxidized and the element that is being reduced. a) 4Fe(s) + ...
*April 21, 2013*

**Chemistry**

Assign oxidation states to all atoms in each of the following. explain the order in which you determine the oxidation states for each element if applicable. a)O2 b)HSO4- c)Na2HPO4 d)CrCl3
*April 21, 2013*

**math**

a bag of marbles contains 5 green 4 red and 6 yellow what is la probability of drawing 2 yellow with replacement.
*April 1, 2013*

**Chemistry**

• Describe the properties of acids and bases and explain the concept of pH • How will you measure the pH of the soil in your garden • How will pH affect materials and equipment you might use in gardening. • 3 vegetables and 3 flowers that would work well ...
*March 24, 2013*

**Chemistry**

At the equivalence point in a titration you know the volume (x mL) of a standard solution of acid (2.5 M) that has been added to a known volume base (y mL). show how you can determine the concentration of the base.? Explain
*March 15, 2013*

**history**

Which of the following labor activists founded the American Federation of Labor? A. Samuel Gompers B. William Sylvis C. Uriah Stephens D. Terence Powderly
*March 11, 2013*

**Chemistry**

How much salt could an average person hold? (Ignore safety concerns) Given equation: 0.3x=y 0.3x meaning mass of water y mean mass of salt that could be dissolved in the given mass of water Assuming the average human body has 60-75% of water, let us just use 75% Solve.
*March 11, 2013*

**Chemistry**

Give a real life scenario in which solubility is important that does NOT involve salt and water.
*March 11, 2013*

**Chemistry**

Which of the following represent conjugate acid-base pairs? For those pairs that are not conjugates, write the correct conjugate acid or base for each species in the pair. a. HS-4-,SO4^2- B. HBr, BrO- c. H2PO4-, PO4^3- d. HNO3, NO2-
*March 10, 2013*

**Chemistry**

use the bronsted-lowry model to label the acid-base pairs in the following equation for the ionization of water: H20(L) + H20(L) <--> H30+(AQ) + OH-(AQ). EXAPLAIN
*March 10, 2013*

**Math**

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism
*March 5, 2013*

**Math **

You have to use 3,500 calories to lose one pound. If you play Dance Dance Revolution you can burn 1,000 calories in an hour. How many hours would you have to play in order to lose one pound? Answer is 35 3500 divided by 1,000=35 please help Ms. Sue i think this is right if not...
*March 4, 2013*

**Chemistry**

What is 431804 and 10235.0 rounded to four significant figures?
*March 3, 2013*

**Math**

It is 72
*February 15, 2013*

**Statistics**

Find the probability that for a random sample of 4 states the sample mean x is between 475 and 525
*February 12, 2013*

**algebra**

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine. 1. iodine1 = 2, iodine2=2 2. iodine1 = 21, iodine2 = 21 3. iodine1 = 41, iodine2 = 41 4. iodine1 = 41, iodine2 = 21
*January 21, 2013*

**algebra **

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine.
*January 21, 2013*

**algebra **

graph the following linear equations and determine the correct classification: L1:y=-x+5 and L2:y=-2x+1
*January 21, 2013*

**algebra**

The difference between two numbers is 18. If the sum of three times the smaller number and half the larger number is 2, find the smaller number.
*January 21, 2013*

**physical science**

Under a pressure of 200 kPa, a confined gas has a volume of 2,500 cubic meters. The pressure acting on the gas is increased to 500 kPa. What is the new volume of the gas if the temperature remains the same?
*January 7, 2013*

**science**

How much volume would a 4x4x4 cm cube occupy
*October 25, 2012*

**Math**

Max creates a lavender dye by mixing 3 parts of red dye. Will a mixture of 14 parts of blue dye with 23 parts of red dye create the same shade of lavender?
*October 25, 2012*

**english2**

Bee balm, coneflowers, and black-eyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together. is it correct
*October 22, 2012*

**physiscs**

A model rocket is launched straight upward with an initial speed of 53.0 m/s. It acceler- ates with a constant upward acceleration of 3.21 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The acceleration of gravity is 9.81...
*September 29, 2012*

**math**

rewrite the division as multiplication h/1/k
*September 17, 2012*

**hEALTH**

lol Ms. Sue didn't reply so Aya freaked out
*August 1, 2012*

**health**

lol^
*August 1, 2012*

**Maths Investments**

A woman has a total of $9,000 to invest. She invests part of the money in an account that pays 8% per year and the rest in an account that pays 11% per year. If the interest earned in the first year is $840, how much did she invest in each account?
*June 26, 2012*

**Algebra 2 **

A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is -1.5 Find the y-intercept of the linear regression.
*May 22, 2012*

**math **

you need 5 foot long board into pieces that are 3/4 of a foot long. How many pieces can we cut? what length of the board will be left?
*May 17, 2012*

**physics**

What is the angular momentum of a 0.200- ball rotating on the end of a thin string in a circle of radius 1.45 at an angular speed of 13.0 ?
*May 6, 2012*

**Maths**

STOP CHEATING EMAD!!!
*May 3, 2012*

**College Chemistry**

12
*March 26, 2012*

**Scottsdale c c **

A baseball has a velocity of 44.0 m/s, directed horizontally, as it is released by a pitcher. The ball’s velocity 0.0100 s before it is released is 42.0 m/s, directed 3.00 degrees above the horizontal. Estimate the ball’s instantaneous acceleration just before it is ...
*February 27, 2012*

**scottsdale CC**

At 0.100 s intervals, the x coordinates of a particle are 0, 1.01 cm, 2.05 cm, and 3.12 cm. Estimate the instantaneous velocity and acceleration at t = 0.
*February 21, 2012*

**scottsdale CC**

Let s ct 3 , where c 1.0 m/s 3 . Compute the average speed over the time intervals t1 1.0 10 1 s, t2 1.0 10 2 s, and t3 1.0 10 3 s, with all time intervals starting at the time t 1.0000 s. What is the instantaneous speed at t 1.0000 s
*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
*February 20, 2012*

**scottsdale CC**

A car travels around a curve at a constant speed of 80.0 km/h. What is the car’s instantaneous velocity at an instant when it is headed west
*February 20, 2012*

**math**

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next foot)?
*February 7, 2012*

**mechanics**

An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the mass just come to rest ...
*February 6, 2012*

**physical science**

C. 100kg, 166N Mass remains constant but weight would be changed because of the gravity. The equation for force is F=ma F=100*1.66 F=166N
*December 2, 2011*

**arrays an expanded algorithm**

I need an example to help my son like 23x17
*December 1, 2011*

**chemistry**

What volume of H2 (g) (at 750. mm Hg and 25 C) is produced from 50.0 mL of 0.214 M H2SO4 and 0.300 g of Al?
*November 29, 2011*

**Math**

I don't get your answer and I need the answer for tomorrow. pleaseeeeeeeee
*October 9, 2011*

**Math**

5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec -------------------------------------
*October 9, 2011*

**Math please help me**

thank you very much for your help
*October 9, 2011*

**Math please help me**

I don't get it. Please could you help me??????????
*October 9, 2011*