Tuesday

September 2, 2014

September 2, 2014

Number of results: 20,351

**Early Childhood Education**

When designing IFSP objectives, its useful to parents to think of skills that a. are short and easy. b. fit into natural daily routines. c. are most useful in promoting ambulation. d. are taught in isolation to maximize chances of progress.
*November 16, 2013 by Sasha*

**Physics**

Guide me through this plz. A single 1,300 kg cargo train car is rolling along a train track at 2.0 m/s when 400 kg of coal is dropped vertically into it. What is its velocity right afterward? Assume a closed system. (Points : 1) 1.5 m/s 2.0 m/s 6.5 m/s 0.0011 m/s
*February 3, 2014 by Me and I*

**English**

Which sentence has an infinitive phrase that functions as the subject? To convert sunlight and energy into food is the end result of photosynthesis. After the rain, water travels from the ground to the roots of a plant. Plants are adapted to take in moisture from the ground.
*June 18, 2014 by happy*

**AP Calculus**

Water flows at a rate of 2 cu. ft. per minute into a vessel in the form of an inverted right circular cone of altitude 2 ft. and the radius of base 1 ft. At what rate is the surface rising when the vessel is one-eighth filled?
*October 26, 2006 by Sarah*

**Math**

can you put this into least to greastest5/8,2/7,3/10 It doesn't help when someone else does your work for you. Please let us know what YOU think the order is, and someone here will give you feedback. =) It's 2/7, 3/10, 5/8 i have an assignment were i have to find out about ...
*May 17, 2007 by Judyth*

**math**

Let A= [7 -4 4] [-4 5 0] [4 0 9] a) Orthogonally diagonalize A b) Use answer from a) to construct a spectral decomposition for A. c) Suppose that x=[1 2 1] and let u be the eigen vector from a) corresponding to the largest eigen-value of A. If W=Span {u}, then use b) to ...
*July 28, 2007 by V*

**8th grade spanish**

I have to do a cross-word puzzle, but I'm not sure about the answer to one of them. It is a 9 letter word (in Spanish), and fits into this sentence: Donde _____ (tu)esos sueteres nuevos? Plese help!
*October 15, 2007 by pinkpolkadots7*

**physics help please :)**

From a height of 35.0 m, a 1.25 kg bird dives (from rest) into a small fish tank containing 50.0 kg of water. What is the maximum rise in temperature of the water if the bird gives it all of its mechanical energy? (delta)T= ?? degrees C
*December 2, 2007 by Christina*

**physics help please :)**

From a height of 35.0 m, a 1.25 kg bird dives (from rest) into a small fish tank containing 50.0 kg of water. What is the maximum rise in temperature of the water if the bird gives it all of its mechanical energy? (delta)T= ?? degrees C
*December 2, 2007 by Christina*

**Calculus**

Let R be the region in the first quadrant under the graph of y=1/sqrt(x) for 4</=x</=9. (a)Find the area of R. I took the antideriative. Then, I plugged in the 9 and 4. I got 2. (b) If the line x=k divides the region R into two regions of equal area, what is the value of...
*December 13, 2007 by Anonymous*

**Science/Lab**

Can anyone tell me what happens when you do the diffusion lab? It is the one where you take food coloring and drop it into hot, cold and room temperature water and tell the differences.I need all the info.... please help.
*April 2, 2008 by Molly*

**AE....**

outline the steps required for a multicultural education to be effective. Describe types of activities we could incorporate into a classroom that would support a multicultural education for all groups How could each group make a contribution to the learning of others?
*March 11, 2009 by scooby91320002*

**Physics**

A tall glass (20cm) is floating in your bathtub. It weighs 60 grams and has a bottom area of 10cm^2. How deep will it sink into the water, while it is still empty and how much water can you add to make it sink?
*May 5, 2009 by Kyle*

**Paraphrasing**

I need to pharaphrase this: Almost immediately he (Anderson)began to turn Interface,Inc.(his company)into an enviromentally friendly enterprise. He began by taking steps to reduce the company's waste and conserve energy by recycling.
*September 9, 2009 by John*

**algebra**

Suppose you deposited $1500 into an account paying 3.5% interest compounded annually when your child was first born. Find the account balance when your child turns 18. What formula would I use to solve this. I do NOT want the answer. Thanks!
*January 10, 2010 by Kaci*

**physics**

A stone is dropped into a deep canyon and is heard to strike the bottom 15s after release. How deep is the canyon? The speed of sound waves in air is 343 m/s and the acceleration of gravity is 9.8m/s^2. Answer in units of m.
*April 15, 2010 by Anonymous*

**physics**

A uniformly charged insulating rod of length 13.0 cm is bent into the shape of a semicircle as shown in the figure below. The rod has a total charge of -7.50 µC. Find the magnitude and direction of the electric field at O, the center of the semicircle.
*November 1, 2010 by anonymous*

**Physics**

The spring of the pressure gauge shown in the figure below has a force constant of 1 100 N/m, and the piston has a diameter of 1.00 cm. As the gauge is lowered into water in a lake, what change in depth causes the piston to move in by 0.550 cm?
*January 28, 2011 by Danielle*

**maths**

A circular pool has a diameter of 3m and is filled to a depth of 70cm. Mr Thorne climbs into the pool and submerges for ten seconds while his son measures the new depth at 72cm. Calculate Mr Thorpes volume.
*February 24, 2011 by Anonymous*

**maths**

A circular pool has a diameter of 3m and is filled to a depth of 70cm. Mr Thorne climbs into the pool and submerges for ten seconds while his son measures the new depth of 72cm. calculate Mr Thorpes volume.
*February 24, 2011 by Anonymous*

**Chemistry**

Oxygen has a boiling point of 90K, and nitrogen has boiling point of 77K. Which is a liquid and which is a gas at 80K? I tried to look into the phase diagrams, but I still don't understand. Can somebody please help and explain to me??? THANKS A LOT!!!
*July 10, 2011 by Cynthia*

**Trig/pre-calc**

r=8cos(theta)+5sin(theta), convert the polar equation into a rectangular equation and then complete the square and determine the center radius...? Help?! I missed the section, and am not getting anywhere with the text...
*August 12, 2011 by A*

**Grade 11 Functions**

A baseball player hits a foul ball into the stands. He wants to know where the ball would've landed if the stands had not been there. The points they give you are: The y-intercept (0,1), (2,2.5) and (134,18). I'm pretty sure you are looking for the zeroes.
*November 2, 2011 by Jim*

**physics**

A stationary mass of 10 kg disintegrates explosively, with the evolution of 4.2*10^5 J, into three parts, two having equal masses of 3 kg. These two masses move at right angles to each other. Calculate the speed of the third part.
*January 16, 2012 by rikki*

**electrical physics**

In Hydrogen atom , if an electron jump from n2 level into n1 level . Prove that the wave number (reciprocal of wave length) of emitted radiation is : 1/λ=me4 /8ε02h3c (1/n22 -1/n12)
*January 24, 2012 by dany*

**English**

jake dad not be anymore physical and he not be able to grab jake daughter when she fall into lake. Jake effects rescue. what be the symbolic meaning of incident? jake own past come infront of his eyes?
*February 14, 2012 by Mohammad*

**Algebra 2**

Ryan moved into a new house with a 1750 gallon pool and needs to fill it. He can't figure out how to close his pool drain. It fills up in 1458 minutes,but it drains in 2187 1/2 minutes. When will it be full?
*November 30, 2012 by Steph*

**Math**

Christine currently has $5000 in her 401(k) and plans to contribute $100 each month for the next 30 years into it. What will be the value of Christine's 402(k) in 30 years if the per annum rate of return is assumed to be 12% compounded monthly?
*December 10, 2012 by Elena*

**Math**

Christine currently has $5000 in her 401(k) and plans to contribute $100 each month for the next 30 years into it. What will be the value of Christine's 402(k) in 30 years if the per annum rate of return is assumed to be 12% compounded monthly?
*December 10, 2012 by Elena*

**maths**

A rectangular reservoir is 120m long,and 75cm wide .at what speed per hour must water flow into it through a square pipe of 20cm wide so that the water rises by2.4m in 18hrs.
*December 19, 2012 by Anonymous*

**Physics**

A space probe is carried by a rocket into outer space where it continues to move on its own in a straight line. What keeps the probe moving? Is the answer: the gravitation forces from diﬀerent stars and planets
*March 1, 2013 by Sally*

**phy**

a 0.5kg piece of metal (c=600j/kg/k) at 300c is dumped into a large pool of water at 20c. assuming the change in temperature of water to be negligible,calculate the overall change in entropy for the system (a)85.5j/k(b) 67.4j/k(c) 122.3j/k
*July 3, 2013 by ikye*

**computer programming**

. Design an application that displays the number of square feet in a house. Declare and initialize the length and width of the house to 37 and 22, respectively. Go into your source code and change the initialization values. Rerun the application
*September 12, 2013 by james love*

**math**

A rancher wishes to use 86 ft of fencing to enclose a rectangular paddock and subdivide the region into three smaller areas. If the total enclosed area is 225 ft2, find the dimensions of the enclosed region.
*November 4, 2013 by Ruth*

**math**

A rancher wishes to use 86 ft of fencing to enclose a rectangular paddock and subdivide the region into three smaller areas. If the total enclosed area is 225 ft2, find the dimensions of the enclosed region.
*November 4, 2013 by Ruth*

**Physics**

A 13 kg asteroid is traveling through space with velocity v = 110 m/s when it breaks up into three equal pieces. One piece is left at rest, and a second one continues with same velocity. What was the energy of the explosion?
*January 15, 2014 by Susan *

**Math**

Danny has a yard in the shape of a parallelogram: width- (50 m) length- (60 m) height- (60 m) he want to split it into 3 pieces, with more than one type of shape. they should all have equal perimeter. the perimeter can not be in decimals. (Help please)
*February 2, 2014 by George*

**Math**

Danny has a yard in the shape of a parallelogram: width- (50 m) length- (60 m) height- (60 m) he want to split it into 3 pieces, with more than one type of shape. they should all have equal perimeter. the perimeter can not be in decimals. (Help please)
*February 2, 2014 by Dane*

**math**

Water is flowing at the rate of 15km/hr. Through a cylindrical pipe of radius 7cm into a rectangular tank which is 50m long and 44m wide.In how many hours will the water label in the tank raised by 21cm
*March 7, 2014 by Aashi*

**language arts**

part a identify participle or participle phrase and the word it modifies 1)Taken for granted by most of us, paper is an esseantial part of our lives 2)The papeer used today has developed over many centuries 3)Ancient Egyptians wrote on a sheet formed from stalks of a reed 4)...
*December 2, 2009 by robert*

**English**

Can you check these sentences for me, please? Thank you. 1) Mary uses the internet mainly to carry out (also do/undertake) school research in History, Geography and Science. 2)Whenever she needs to get information, she looks it up on the net. 3) It's quick and easy since she ...
*September 14, 2011 by Henry2*

**Calculus**

Hello. I'm having problems with a couple of Calculus questions that involve maximums of geometric shapes. The first one is: 1. Find the dimensions and minimum volume of a right circular cone which can be circumscribed about a sphere of diameter 8. What I have is used similar ...
*January 11, 2007 by Alex*

**physics**

a diesel engine rapidly compresses air in its combustion chambers. while this happens it squirtsa fine spray of diesel fuel into the chamber. explain why the diesel ignites. can someone please help? Compressing gases heats them.
*May 3, 2007 by Pauline*

**Math**

Three neighbors are sharing a rectangular strip of land fir a garden. They divide the land into 24 equal-sized pieces. What fraction of the land does each person get if they share it equally? Write the answer in more than one way
*December 8, 2009 by Nick*

**algebra 1**

help please this question is driving my crazy. Suppose there is a 2-degree drop in a temperature for every thousand feet that an airplanes climbs into sky. If the temperature on the ground is 65 degrees, what would be the temperature when the plane reaches an altitude of 23,...
*October 26, 2010 by jazz*

**Physics**

An isolated 3 kg object is moving in the positive y direction along the -y axis at 2 m/s; when it reaches the origin it breaks into two pieces sending a 1 kg fragment in the +y direction at a speed of 3.7 m/s. what are the velocity and direction of the other piece immediately ...
*December 16, 2010 by Sophie*

**physics**

You are on Mars and would like to send a probe into space so that it does not fall back to the surface. What minimum launch speed do you need? (The mass of Mars is 6.42x10^23 kg and the radius of Mars is 3.40x10^6 m) km/s Please someone also help me on this.I really don't know...
*June 2, 2012 by Akbar*

**physics**

consider system shown in fig. 1. the coeffecient of kinetic friction between block a (m=10 kg) and the table is 0.20. calculate the weight of the hanging block required if this block is to descend at constant speed once it has been set into motion.
*January 2, 2013 by flay*

**MATH**

How do you write fractions in simplest form? for example I need explanation 48/66 Also I started on another one it states that I have to multiply. and I have to be sure to simplify each product 7/9 x 3/5 My answer: 21/45 I just don't know what goes after this step? to simplify...
*December 4, 2006 by jasmine20*

**Physical Education**

I just want to know what different branched there are in taking a major in physical education. I know you can go into teaching, athletic training, but I want to know if there are any other areas. Physical tharapy, Sports Medicine, Phisiology of astronauts
*December 2, 2006 by Frank*

**college**

A patient went into cardiac arrest. The (-ac) portion of the word cardiac is a/an A. noun suffix B. plural suffix C. combining form D. adjective suffix I think it might be D but I'm not totally sure.
*August 5, 2010 by Nicole*

**physics**

an arrow of mass .04 kg is pulled back 10 cm in the bow, having a force of 25.2 N. It is released 1.5m from the ground...how far will the arrow fly? (all of the energy from pulling it back converts into the flying arrow)
*December 6, 2010 by help*

**algebra**

Hassan deposited $7,500 into a bank account. At the end of 3 years, the account had earned $900 in simple interest. What rate of interest did the account earn per year?
*January 18, 2011 by joe blow*

**Finance**

if an investor is contemplating purchasing long-term securities,what are the factors he/she should take into consideration in selecting among government bonds,semi government bonds or corporation bonds?
*March 6, 2011 by baoni*

**diffirential calculus**

a pole 27ft long is carried horizontally along a corridor 8ft wide and into a second corridor at right angles to the first. how wide must the secon corridor be?
*September 25, 2011 by kait*

**Biology **

If a male's left vas deference is blocked. how is his sperm count affected? Explain you answer .. well wt i know is that the sperm count would decrease as less sperm moves from the epididyms into the urethra.
*October 27, 2011 by Mark J*

**chemistry**

if a small piece of sodium is dropped into water,it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na(s)+2H2O(l) 2NaOH(aq)+H2(g),the sodium hydroxide that is formed is a..
*August 5, 2012 by debbie*

**Statistics**

Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of probabilities. R(0) = R(1) = ...
*May 27, 2013 by Tom*

**statistics**

Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of probabilities. R(0) = R(1) = ...
*May 29, 2013 by Tom*

**college math**

Suppose you deposit $103,000 into an account paying 7.5% simple annual interest, and that you won't touch the account until it holds $1,000,000. How long must you wait?
*February 26, 2014 by Keisi*

**physics**

A car traveling at 53 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 65 cm (with respect to the road) while being brought to rest by an air bag. What magnitude of foce (assume constant) acts on the passengers's upper torso, which is 41 kg? I ...
*November 12, 2006 by Lars*

**algebra II**

Help me solve this problem that I missed, so that I can see where I went wrong. Synthetic Division (3X3 -2x +5). (x-2) I would set it up with the following algorithm to do synthetic division (this is how I do it and how I taught it, the ----- are simply there to keep the ...
*August 7, 2007 by Jonathan*

**english**

last time, i promise a blessing, james wright Just off the Highway to Rochester, Minnesota Twilight bounds softly forth on the grass. And the eyes of those two Indian ponies Darken with kindness. They have come gladly out of the willows To welcome my friend and me. We step ...
*March 3, 2008 by wruth*

**Physics**

Suppose that you are standing on a cardboard carton that just barely supports you.What would happen to it if you jumped up into the air? It would spring upward a bit. It would move sideways. It would be unaffected. It would collapse.
*April 16, 2011 by Emma*

**Grammar**

I need help on some of these questions: Identify the independant clause in the sentence: 1.Scientists have found traces of an ancient forest that once grew on an empty lot in New Jersey when the region had a tropical climate. A.on an empty lot in New Jersey B.Scientists have ...
*May 8, 2009 by mysterychicken*

**math**

2x + 3y = 78 How do i solve for x and y? 2x=78 78/2=39 so x=39 3y=78 78/3=26 so y=26 Can't be, because 2(39)+ 3(26) does not equl 78 You need TWO equations when you have TWO variables, such as x and y. It can't be done with one equation. BUT, you say, what about this post ...
*November 3, 2006 by mike*

**World history; Check:P**

1.What was the significance of the Twelve Tables? The Twelve Tables were significant because they were an early example of written law displayed publicly for all who could read them. They were later used as the laws for Rome. "The Twelve Tables established the idea that all ...
*February 12, 2013 by Unknown*

**Sandy**

Hi, I need some help with this problem: The density of ice is 920 kg/m3, and that of sea water is 1030 kg/m3. What fraction of the total volume of an iceberg is exposed? I took the density of the iceberg divided by the density of the water and multiplied this by 100, but this ...
*December 10, 2006 by Physics Problem*

**math,help**

what formula do i use for the following problem: which of the following investments is larger after 19years? a) $7500 is deposited annually and earns 4.5% interest compounded annually. b)$600 is deposited monthly and earns 4.5% interest compounded monthly. Does he deposit the ...
*June 30, 2007 by student*

**Physics**

(a) In the LC circuit shown in the figure, the current is in the direction shown and the charges on the capacitor have the signs shown. At this time, a) the current is increasing and the charge on the positive plate is increasing. b) the current is increasing and the charge on...
*June 16, 2013 by Anonymous*

**English**

Writing letters that will never be read frees you to say anything at all. You can write to those people whose petty meanness stung you or whose significant cruelties really hurt you. It’s open season on expressing as much rage or sadness or wonder as your heart can desire and ...
*December 2, 2013 by Anonymous*

**Maths'**

What percentagge of £119.25p is £11.04p? Divide: 11.04 by 119.25. This gives you a decimal number. Move the decimal point two places to the right to turn it into a percentage. Please post your answer and we'll be glad to check it.
*August 8, 2006 by wattie*

**math**

When you divide, how do you turn the remainder into a fraction? Put the remainder over the divisor. If you were dividing 13 by 3 you'd have 4 (1/3). In this example 3 is the divisor. You don't need to use the parentheses on paper, I used them here so there's no confusion. oh ...
*September 28, 2006 by Brianna*

**economics**

can some explain to me how the auto industry can determine that there is an inequality? i was looking the only thing i can figure out would be like the trade imbalance for export and imported cars is some thing else i need to look into
*April 6, 2007 by Amanda*

**computer**

Your boss wants you to input financial data into the computer to create a company earnings statement. What office suite program would be ideal for this task? Microsoft Excel or some other spreadsheet formatted program
*July 23, 2007 by reter*

**physics**

A uniformly charged insulating rod of length 14 cm is bent into the shape of a semicircle. if the rod has a total charge of -7.5 C. find the magnitude and direction of the electric field at the center of the semicircle. I'm not sure where to start or what to do. what formula ...
*February 20, 2008 by Anonymous*

**Maths**

I have a summation formula for Fibonacci numbers. n (SUM)F(2i)=F(2n+1)-1 i=0 When the i value is changed from zero, and is then subbed into F(2i)the equation will not work. (RHS wont = LHS) eg: i=2 n=3 3 (SUM)F(4)=F(7)-1 i=2 I understand the summation bit, (it =3) But what ...
*November 4, 2008 by Tim*

**Math (Algebra/Pre-Algebra)**

Ms. Caswell deposits $450 into an account earning 8% interest per year. How much simple interest is earned after 4 years? Please explain.. I'm supposed to show work =] thank you!
*June 4, 2009 by Samantha*

**calc**

integral from -2 to -8 (10x–9x^2)dx use midpoint approximation with n=3 my points were (-8,-6) (-6,-4) (-4,-2) i added them up and dividded by two the plugged it into the orginal eqautipon. The number i got i added and multpiled by three but still got the wrong answer. Please ...
*June 5, 2009 by haris*

**Algebra 2**

What's the formula given three points to come up with the quadratic equation were your give points (x1, y1 ) (x2, y2) (x3, y3) I remember seeing some really long equation were you just plug the numbers into it and get your answer but I have forgotten the equaiton
*June 11, 2009 by Algebra 2*

**AED 200**

What are the fundamental differences between Western philosophies and Native North American ways of knowing? How does each culture generally view the world and education? How can you incorporate seemingly different ways of knowing into your curriculum?
*August 25, 2009 by Latoya*

**psychology**

Ms. Sue, could you help me find some data to answer the question below. What are both the advantages and disadvantages of classifying mental disorders into types and maintaining such taxonomy for clinical reference ? Explain your answer for both. thank you
*December 9, 2009 by Rose*

**Biology**

There are 10 Characteristics of a living organism 1. Composed of one or more cells 2. evolve into a new type of organism 3. carries out and controls a variety of Chemical reaction 4. produces offspring resembling itself. What are 6 more.
*March 22, 2010 by Jenny*

**Math**

If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, it height in feet after t second is given by y=95t–16t2. Find the average velocity for the time period beginning when t=2 and lasting i) 0.1 seconds ii) 0.01 seconds
*October 15, 2010 by Jennifer*

**math 11**

The axis of symmetry of a graph is the vertical line x=5. One of the x-intercepts is (11,0). What is the other x-intercept. Explain how to do this either by showing work or how to enter it into the TI83Plus. Up until now I've had equations to work with so this one has me stumped.
*October 23, 2010 by Juliet*

**Math**

Jeremy is in Grade 8. He has a paper route and wants to save for his college education. He determines that he has $100 per month to put into an account at 6%/a compounded monthly. How much will he have at the end of five years for his college education?
*January 15, 2011 by Alicia*

**physics**

What is the speed of a communications satellite orbiting the Moon at an altitude of 290 km above the Moon’s surface? I know that G=6.67e-11 and h=290. I plugged inthese values, 7.35e24 for the mass and 1.738e6 for the radius into v=sqrtGM/R=h but I didn't get the right answer.
*January 19, 2011 by joe*

**Physics **

Small parts on a conveyor belt moving with a constant speed of 1m/s are allowed to drop into a bin. The radius R is .5m. The coefficient of friction is .25. What is the angle at which the parts start sliding off the belt???? Dont even know where to begin.
*February 10, 2011 by Kindra*

**Math**

Suppose you invest your money into an account that pays 4.0% per year compounded quarterly. How long (in years) will it take for your money to triple? Round your answer to one decimal place. I know I use this... A=P(1+r/n)^nt But to go from there and get an answer, so confused...
*July 22, 2011 by Tina*

**MATH**

FIND EACH ESTIMATE: 1) A RARE TRUFFLE ONCE SOLD FO $13.20 FOR A 0.44 OZ CAN. APPROXIMATELY HOW MUCH WOULD 1LB OF THIS TRUFFLE COST? 2) THE LENGTH OF THE LONGEST LOAF OF BREAD MEASURED 1,405 FT 1 3/4 IN. IT WAS CUT INTO SLICES 1/2 IN. THICK. HOW MANY SLICES WERE THERE?
*September 5, 2011 by MARCO*

**chemistry**

1. Is there a way to put energy into Zinc Iodide in order to Regain the Elements, Zinc and Iodine? If there is a Way, How does it Happen? 2. What are the Identities of the substances found after electrolysis and heating? I don't understand these questions. Any help would be ...
*September 22, 2011 by John M.*

**Physics**

A Silver bowl has a mass of 1.78kg. It is shaped like a cylinder and has a diameter of 35.0 cm and a height of 8.00cm. It is placed in water. Find (a)the volume of water it displaces, (b) The buoyant force exerted on it by the water, and(c)how deeply it sinks into the water.
*November 6, 2011 by ed*

**Science**

What Temperature would you get after the First 5 Minutes of Putting 4 Ices into a 99 degree warm water? After The Second 5 MInutes? YOu Might need to do this experiment at home. But May anyone Please Help and tell me it in Farenheit so i can confirm my Answers.
*December 13, 2011 by Science*

**Statistics**

Alonzo applied for a job to be an administrative assistant.He had to take a typing test. His words per minute were translated into a z-score. If the z-score was 0, should he be hired? There were 47 applicants, and typing speed is very important.
*April 8, 2012 by Jen*

**mathematic 11**

to save for a motercyle, abdul deposited $2000 into an account that earned simple interest at 5.4% per year. how much more would the investmennt earn in 3 years if it was invested at 5.4% per year, compounded anually?
*May 15, 2012 by josh wat*

**chemistry**

Two liquids of different densities (ρ1 = 1500 kg/m3, ρ2 = 500 kg/m3) are poured together into a 100 L tank, filling it. If the resulting density of the mixture is 800 kg/m3, find the respective masses of the liquids used.
*August 29, 2012 by nick*

**Physical Science**

A block of ice at 0^\circ {\rm C} is dropped from a height that causes it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice. What is the height necessary for this to occur.
*October 18, 2012 by James*

**physics**

In a head-on collision, a car stops in 0.30s from a speed of 30m/s . The driver has a mass of 73kg , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fraction of a second?
*October 28, 2012 by Anonymous*

**chemistry**

Use the kinetic molecular theory of gases to explain each of the following: a. a container of nonstick cooking spray explodes when thrown into a fire. b. the air in a hot-air balloon is heated to make the balloon rise.
*November 10, 2012 by Boo Boo*

**Physics**

A 0.200 kg block of ice at -15 degrees Celsius is placed into a pan on a stove, heated to a liquid, and then to vapour with a final temperature of 115 degrees Celsius. Calculate the total amount of heat required for this process.
*January 7, 2013 by Anonymous*

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