Monday

September 22, 2014

September 22, 2014

Total # Posts: 6,245

**math PLEASE HURRY**

72magnets
*November 8, 2011*

**chem**

51.33 mL
*November 8, 2011*

**physics**

Two cars leave the same point at the same time, each travelling at the same constant speed and each having the same mass. The first car drives directly east, while the second car heads directly north. If the centre of mass of the two-car system is travelling at 51 km/h (i.e. ...
*November 8, 2011*

**Calculus**

Find the rectangle of largest area that can be inscribed in a semicircle of radius R, assuming that one side of the rectangle lies on the diameter of the semicircle. NOTE: Let L denote the length of the side that lies on the diameter and H denote the height of the rectangle. ...
*November 7, 2011*

**Math**

Suppose 8 out of every 20 students are absent from school less than five days a year. Predict how many students would be absent from school less than five days a year out of 40,000 students.
*November 7, 2011*

**computer**

Which of the following operating system types is used in PDAs? (Points: 5) a.Multi-user/multi-tasking b.Real-time c.Single-user/multi-tasking d.Single-user/single-tasking is it B
*November 7, 2011*

**computers **

plz help
*November 7, 2011*

**computers **

Which of the following operating system types is used in medical equipment or a cash register? (Points: 5) a. multi-user/multi-tasking b. real time c. single-user/multi tasking d. single user/single tasking is it A
*November 7, 2011*

**social studies.**

15 is C 16 is D I am pretty sure that these are your answers.
*November 7, 2011*

**physics help please**

What are the small-amplitude period and frequency of a 10.0 m long pendulum?
*November 7, 2011*

**math**

So: 47 137 227 317 Do I need to add +360n?
*November 6, 2011*

**math**

tan(2theta-34degrees)=squareroot3, theta range{real numbers of degrees}
*November 6, 2011*

**math**

So: 47 137 227 317 Do I need to add +360n?
*November 6, 2011*

**math**

sgr2 sinD cosD=sinD
*November 6, 2011*

**math**

The points (−12, 20), (0, 5), (42, −3) lie on the graph of f. List three points on the graph of g(x) = 10 − 2f(−3x).
*November 5, 2011*

**Physics**

At a particular instant, a stationary observer on the ground sees a package falling from a moving airplane with a speed vobserver at an angle θ to the vertical. To the pilot flying horizontally at a constant speed relative to the ground the package appears to be falling ...
*November 5, 2011*

**Physics**

A boat heads directly across a river with a velocity of 12 m/s. If the river flows at 6.0 m/s find the magnitude and direction (with respect to the shore) of the boat's resultant velocity.
*November 5, 2011*

**maths**

add all the numbers and divide the answer by 11
*November 5, 2011*

**Algebra 2**

The perimeter of a rectangle is 122m. The length of the rectangle is 11m less than 5 times the width. Find the dimensions of the rectangle.
*November 5, 2011*

**Europe in the 19th century**

huh? What sites?
*November 4, 2011*

**Europe in the 19th century**

I have to write a paper on the changes of labor relations in the quarter century before WWI. So far I can only think the journeymen and master craftsmen, and how the journeymen doesn't have to depend on the master anymore. What other changes in the labor relations are there?
*November 4, 2011*

**marketing**

How do consumption habits for products such as Scotch whisky vary from country to country? Why are some spirits products and brands strictly local, while some have global potential?
*November 4, 2011*

**math**

3/9 divided by 7/8
*November 4, 2011*

**math**

If there are exactly 5 times as many children as adults at a show, which of the following cannot be the number of people at the show?
*November 4, 2011*

**math**

In a class of 29 children, each of 20 children has a dog and each of 15 has a cat. How many of the children have both a dog an a cat using Vinn Diagrams
*November 4, 2011*

**calculus**

Find the inflection points of f''(x)= x(x+1)(x-2)^2. Explain
*November 3, 2011*

**calculus**

Lim (1+(a/x))^(bx) x->infinity I'm having a lot of trouble with this limit.
*November 3, 2011*

**Chemistry**

I understand that it is 30C, but what equation would one use for this?
*November 2, 2011*

**Chemistry**

10 mL of 60oC water is mixed with 10 mL of 0oC water in a perfect calorimeter. What is the final temperature?
*November 2, 2011*

**Translation**

I am in a translation class and the sentence contains this phrase can you tell me what it means The city was brutal in its reaction wiping 50 3/4p off the share price what does 50 3/4p stand for
*November 2, 2011*

**physics**

You jog at 6.2 mi/h for 5.0 mi, then you jump into a car and drive for another 5.0 mi. With what average speed must you drive if your average speed for the entire 10.0 miles is to be 10.6 mi/h? I don't get why the answer isn't 15.
*November 1, 2011*

**chemistry**

Using a coffee-cup calorimeter, it is found that when an ice cube with a mass of 24.6 g melts, 8.19 kJ of heat are absorbed. (a) Calculate the change in enthalpy per gram and per mole of water. (b) Write the thermochemical equation for this physical change. (c) What mass of ...
*November 1, 2011*

**chemistry**

When 1.50 g of calcium chloride is dissolved in 150.0 g of water, the temperature of the water rises from 20.50°C to 22.25°C. Assume that all the heat is absorbed by the solution. (a) Calculate the heat of solution per gram and per mole of CaCl2 that dissolves. (b) Is ...
*November 1, 2011*

**math**

From 1950 to 1970,some glaciers in Alaska thinned by an average of 1.7 ft per year.What was the change in glacier thickness during this period?
*October 31, 2011*

**History**

Please Help? What impact did Niccolo Machiavelli have on events during his days?
*October 31, 2011*

**History**

Please help How does Niccolo Machiavelli fit the Renaissance mold?
*October 31, 2011*

**chemistry**

Cl- => Atomic number 17 - 10 (Core electrons from [Ne] = 7 K+ => Atomic Number 19 - 18 (Core electrons fom [Ar] = 1
*October 31, 2011*

**Logic**

Im guessing its No he doesnt teach 8th grade because he doesnt carpool with Chris...but this is a little tricky to me
*October 30, 2011*

**Logic**

Gene will teach 7th grade of Gene will teach 8th grade. If Gene teaches 7th grade, he will be assigned to the Sunset Road School. Gene will carpool with Chris if he is assigned to the Sunset Road School. If Gene teaches *th grade he will have his daughter Briana in his class. ...
*October 30, 2011*

**physics**

Hello, I'm trying to figure out which of the following statements are TRUE. I suspect that 2, 6, 8 are true...and that there is one more that is true, but not sure which one? Thanks! It is impossible to have a collision between two objects in which the center-of-mass of ...
*October 29, 2011*

**math**

if I leave home to go to the beach and at 7:05 am I am 1/3 of the way there. At 7:25am I am 3/4 of the way there. What time will I arrive at the beach.
*October 27, 2011*

**Chem 101**

Using the "Unit conversion method", derive an equation to calculate the heat required to raise the calorimeter to the maximum temperature.
*October 26, 2011*

**criminal law**

typically the chronological, ______ of a child is used to determine criminal responsibility rather than mental capacity. a. age b. well being c. health d. sanity im confused between A and D
*October 26, 2011*

**criminal law**

conspiracy is an ______ crime a. accessory after the fact b. general intent c. specific intent d. structure is it B
*October 26, 2011*

**criminal law**

the law will not punish an ______ act a. ignorant b. reckless c. involuntary d. premeditated i think its C
*October 26, 2011*

**Psychology**

i think its C
*October 26, 2011*

**physics**

5.82N
*October 25, 2011*

**calculus**

f(x) = ln x, [1, 6] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a comma-separated list. If it does not satisfy the hypotheses, enter DNE).
*October 24, 2011*

**psychology**

1. psychologists who believe in _____ are most likely to attempt to understand diversity in ethnic background as an influence on behavior: a. individual differences b. free will c. determinism d. universal principles is it "A" 2. Dr. Hall believes that thought ...
*October 24, 2011*

**Psychology**

1. Often called the "father of modern psychology." William Wundt painstakingly examined the small pieces of behavior. He was not interested in personality mental disorders. He did study the cognitive elements of: a. thinking, perception, and consciousness b. hearing...
*October 24, 2011*

**Psychology**

1. Samantha is suffering from fatigue and sometimes cannot make herself get out of bed in the morning. She feels that the world is a sad, unhappy place and would like to be relieved of her existence. Dr. Powell and Samantha examine her feelings very closely and consider the ...
*October 24, 2011*

**calculus**

a splenical ballon is being inflated @ 10 cubic inches per secound. how fast is the radius of the ballon increasing when the surface area of the ballon is 2 pi square inches( answer to 4 decimal places)?
*October 24, 2011*

**Grade 11 physics**

a string can hold up 12 kg without breaking. You tie the string to a 30kg object sitting on ice and use it to pull the object horizontally 22m. Calculate the minimum possible time to complete the task
*October 23, 2011*

**physics**

A 95kg box initially at rest on a horizonal floor requires a 650N horizontal force to set it in motion. After the box is in motion, a horizontal force of 560N keeps it moving at a constant velocity. Determine uS and uK the clock and the floor.
*October 21, 2011*

**algebra**

i have tried alot of different ways of doing this problem but i cant find the right answer. QUESTION:2and2/3 plus 2/3 plus 1and1/3
*October 20, 2011*

**math**

if their are 72 students 2/3 of the students are 12 years old how many are 12 years old
*October 20, 2011*

**Chemistry**

Given that Kw for water is 2.4× 10–14 at 37 °C, compute the pH of a neutral aqueous solution at 37 °C, which is the normal human body temperature.
*October 20, 2011*

**chemistry**

[H+]= [ClO4-]= [OH-]=
*October 20, 2011*

**physics**

A car having an initial speed of 16 m/s is uniformly brought to rest in 4.0 s. How far does the car travel during this 4.0 s interval?
*October 20, 2011*

**Calculus**

Find the Critical Numbers? 1.) f(x) = 2x^3 + 3x^2 + 36x x=? 2.) g(t) = |5t − 4| t=?
*October 20, 2011*

**math**

For each right triangle, draw the rectangle made by drawing sides opposite the two shorter sides in the triangle. Find the area of each rectangle
*October 19, 2011*

**physics**

trying to raise a barrel using sections of pipe.The three objects are horizontal cylinders resting on level ground. The barrel has a mass of 100 kg and its diameter is 2.0m. Each pipe has a diameter of 0.50 m. What minimum horizontal force must his feet exert on the pipe to ...
*October 19, 2011*

**calculus**

Find the volume of the solid formed by rotating the region in the 1st quadrant enclosed by the curves y= x^(1/4) and y= x/64 about the y-axis.
*October 18, 2011*

**English**

5. A and B above
*October 18, 2011*

**math**

I need help on the quistion17yd x [x+(-4)]min if the formula is d=rt
*October 18, 2011*

**Socials**

Is billy bishop's diary a primary source? Evaluate it as a historical source. Please help. Not quite sure what this means. don't understand what the second part is telling me to do. thanks.
*October 17, 2011*

**Socials (URGENT)**

Why did the canadian government feel the need to control the economy, transportation and trade after war was declared in 1914? Was this a genuine need? Explain. Hi, I need some help on the second half of the question. Was it a genuine need? I can't find the answer anywhere...
*October 17, 2011*

**Quote**

can anyone please explain what this quote means? thank you "Man is nothing else but what he makes of himself.” ~Jean-Paul Sartre
*October 17, 2011*

**organic chem **

Calculate Percent Composition of the Unknown Mixture : Methanol BP 64.7 Toluene Bp 110.6
*October 16, 2011*

**Geometry **

Vw is bisected by xy and xz at x creating 3 angles if m< vxy= 6x-14 and m<yxz=2x+5 and m<wxz=2x-1 find the degree measures <vxy, <yxz, and <wxz
*October 16, 2011*

**biology genetics**

In Leghorn chickens, + stands for colored feathers and C represents white feathers. At an independently inherited gene, the allele + inhibits color expression, whereas I has no effect on color expression
*October 16, 2011*

**law**

its Service
*October 15, 2011*

**law**

The legal business is a __________ industry. (Points: 5) regulatory statutory service judicial is it "Statutory"
*October 15, 2011*

**law**

what do you think about A? Does that make sense to you
*October 15, 2011*

**law**

For an attorney, one of the most common negative aspects of the contingency fee is: (Points: 5) a. that the client may not pay him. b. the high degree of risk involved in the litigation. c. that the costs may be too high. d. that the judge may not grant the payment. Is it (B)
*October 15, 2011*

**law**

An alternative to an hourly rate is a/an __________ rate. (Points: 5) cost advertised family fixed Is it "Fixed"
*October 15, 2011*

**calculus**

If a snowball melts so that its surface area decreases at a rate of 4 cm2/min, find the rate at which the diameter decreases when the diameter is 9 cm.
*October 15, 2011*

**Chemistry**

Using enthalpies of formation, calculate the quantity of heat produced when 14.0 g of propane is completely combusted in air under standard conditions.
*October 14, 2011*

**Geography**

Thnx alot. :L
*October 14, 2011*

**Geography**

I also need a river tees map from cross fell to North sea
*October 14, 2011*

**Geography**

I need to write about the river tees AND about the source to mouth. Please please help me :( I have to redo do it by monday and I can only use the computer for 30 more minutes! Please F'ing help ME.
*October 14, 2011*

**calculus**

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint cm thick to a hemispherical dome with a diameter of meters.
*October 14, 2011*

**Calculus**

2079
*October 13, 2011*

**calculus**

Yeah, I originally got 18.9 km/h, but the website is not accepting my answer. Is there something else?
*October 13, 2011*

**calculus**

That's not right...
*October 13, 2011*

**calculus**

At noon, ship A is 110 km west of ship B. Ship A is sailing east at 25 km/h and ship B is sailing north at 15 km/h. How fast is the distance between the ships changing at 4:00 PM?
*October 13, 2011*

**calculus**

find the volume of the spherical segment with diameter 20inches and a zone area of 160 pi in2
*October 12, 2011*

**chemistry**

a 30.0ml sample of diprotic acid is titrated with .260M KOH. if 68.5ml is required to reach the equivalence point, what is the concentration of the acid?
*October 12, 2011*

**OChem**

hahah lol, my names not even john, i know you dont know me, because i dont know you hahahahahaha
*October 12, 2011*

**OChem**

just kidding, idk
*October 12, 2011*

**OChem**

all of them
*October 12, 2011*

**calculus**

y = (ln x)^(cos4x) Use logarithmic differentiation to find the derivative of the function.
*October 11, 2011*

**Physics**

You swing a 3.24-kg object in a vertical circle of radius 0.920 m. The speed of the object at the top of the circle is 3.25 m/s; the speed of the object at the bottom of the circle is 6.90 m/s. Find the tension in the rope tied to the object at: a) The top of the circle b) The...
*October 10, 2011*

**Physics**

An object of mass 1.4kg is placed 11.5 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the object remains fixed on the turntable until a rate of 37 rpm is reached, at which point the object slides off. What is ...
*October 10, 2011*

**physics**

what is the net force needed to lift a full grocery sack weighing 210N uniformly?
*October 10, 2011*

**Chemistry**

How many milliliters of 0.250 M KMnO4 are needed to react with 3.36 g of Iron(II) sulfate, FeSO4? The reaction is as follows: 10FeSO4(aq) + 2KMnO4(aq) + 8H2SO4(aq) ¨ 5Fe2(SO4)3(aq) + 2MnSO4(aq) + K2SO4(aq) + 8 H2O(l
*October 9, 2011*

**physics**

An airplane ﬂies 137 km due west from city A to city B and then 412 km in the direction of 46.5◦ north of west from city B to city C. What is the distance between city A and city C? Relative to city A, in what direction is city C? Answer with respect to due east, ...
*October 9, 2011*

**calculus**

Can anyone else elaborate?
*October 9, 2011*

**calculus**

y sin 12x = x cos 2y, (pi/2, pi/4) Find the tangent line to the curve at the given point. y=???
*October 9, 2011*

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