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September 18, 2014

Posts by Emily


Total # Posts: 2,309

Calculus I
Reading these answers makes a whole lot more sense after a night's sleep, haha. Thank you so much!
January 30, 2012

Calculus I
We're reviewing limits from the previous chapter, but I'm still having some difficulty with some problems: lim tan(pi(x/4)) as x-> -7 lim (x^2 - x^3(cos(1/x))/3x^2 as x-> 0 I know the answer to the first problem is 1 and to the second problem it's 1/3 but I&#...
January 30, 2012

Calculus
Since f is a polynomial, it is continuous in the interval [0,1]. f(0) = 3 f(1) = 9 Therefore, for every value of k in the interval [3,9] there is a c in the interval [0,1] such that f(c)=k.
January 30, 2012

English Lit
okay-thank you-I'll try again
January 29, 2012

English Lit
I have a question about Henry II. What did he do that solidified his power as king but led to economic problems and helped incite conflict with the church. The possible answers are: Executed all Bishops who were opposed to his rule Gave enormous finiacial gifts to the nobility...
January 29, 2012

SIMILARITY
WHAT ARE THE SIMILARITIES OF A PARK AND A PLAYGROUND?
January 29, 2012

SOSO
okay! but what are the similarities
January 29, 2012

SOSO
okay. THEY ARE DIFFERENT BECAUSE A PLAYGROUND IS A PLACE WITH SLIDES,SWINGS,MONKEY BARS,AND SEE-SAW WHERE KIDS CAN PLAY.A PARK IS AN OPEN AREA WITH BENCHES AND PONDS WHERE THERE IS A LOT OF FREE ROOM TO RUN.
January 29, 2012

SOSO
what ARE the similarites and differences between parks and playgrounds!
January 29, 2012

Physics
A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.30 s after her feet first touch the water, what average upward force did the water exert on her? I'm not sure how ...
January 29, 2012

Physics
How do you calculate the magnitude of the uncertainty of the net force, U{F}? I was given several different equations but for some reason I'm still confused. Any help would be greatly appreciated.
January 28, 2012

Physics
How do you calculate the magnitude of the uncertainty of the net force, U{F}? I was given several different equations but for some reason I'm still confused. Any help would be greatly appreciated.
January 28, 2012

Physics
Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?
January 25, 2012

Physics
Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?
January 25, 2012

Physics
A hunter wishes to cross a river that is 1.6 km wide and that flows with a speed of 4.8 km/h. The hunter uses a small powerboat that moves at a maximum speed of 9.6 km/h with respect to the water. What is the minimum time necessary for crossing?
January 19, 2012

physics
a car rolls off a cliff and lands 15m from the base. if the cliff was 22m high, how fast was the car going? show work.
January 15, 2012

physics
A 20000 kg airplane takes off by traveling 300 m down a runway while the engines exert a continuous force of 4000 N.(a) Calculate the change in kinetic energy of the airplane during takeoff.(b) Determine the speed of the airplane as it leaves the runway.
January 13, 2012

HELP
okeedokey
January 12, 2012

HELP
i need a printable protractor
January 12, 2012

Science
how is it possible to figure out a science problem like this EXAMPLE:s=2m*6Hz=2m*6(1/s)=12m/s if they don't tell you what the letters mean?
January 10, 2012

Geometry
MO bisects <LMN,m<NMO=(6x+19)°,andm<LMO=(9x-14)°. Solve for x and find <LMN.
January 9, 2012

math
kano's college is 1200 miles away.he drives 300 miles each day.how long will it take him to get to college? _______________________________________ days / miles per day /miles in all _______________________________________ 5 / 300 /1500 300*5 =1500 is the number model write?
January 5, 2012

stuff
is figure skating all season
January 5, 2012

math
How many 8 by 10 inch tiles fit on a 16 by 20 ft floor ?
January 4, 2012

math
what do the numbers 8/10,0.75,0.2 and 2/5 look like in order from least t greatest?
January 3, 2012

Math
A total number of 121 people came to the school science fair this year. This number is 7 MORE than TWICE the number of people who came last year's science fair. How many people came last year?
December 20, 2011

earth
what factors contribute to the formation of fertile, deep topsoil in temperate regions?
December 18, 2011

Physics
James's tug of war team pulls with 500N of force to the right wile Jake's team pulls with 415N to the left. If James's team weighs 350 kg, how fast are they moving?
December 11, 2011

physics
A lever has a Mechanical Advantage of 13. How much force would the lever exert if you push with a 200N force?
December 11, 2011

11th grade english
I'm supposed to choose how the italicized noun clause is used. Not so sure about the different types of noun clauses.. can someone help me? & also kinda explain the difference? 1.The first thing to consider was [how to find a paying job.] S OP PN DO 2.I am optimistic ...
December 9, 2011

Physics
Two carts with masses of 4.24 kg and 3.44 kg move toward each other on a frictionless track with speeds of 4.90 m/s and 3.51 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
December 8, 2011

Math
If Alice earns a monthly salary of $315 plus a comission on her total sales. Last month her total sales were $9640 and she earned a total of $1182.60. What is her comission rate?
December 8, 2011

algebra
k but how do I find that?
December 6, 2011

algebra
write an equation of the line that passes through the given point and is parallel to the given line (-1,3), y=2x+2
December 6, 2011

Government
The correct answer is the television.
December 6, 2011

Science
Stage of mitosis in which Chromosomes split apart
December 5, 2011

Physics
What is the maximum acceleration of a platform that oscillates with an amplitude of 2.1 cm at a frequency of 6.7 Hz? I feel like this is a very simple question, but I'm having trouble figuring it out.
December 5, 2011

Physics
A radio set at a sound level of 20 dB is suddenly increased to 80 dB. how many more time greater is the pressure amplitude at 80 dB? I do not know what to do please help
December 1, 2011

Calculus I
Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sqrt(1+5x) from 1<x<7
December 1, 2011

Calculus I
Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sqrt(1+5x) from 1<x<7
December 1, 2011

3rd Grade Math
Why is this statement wrong? The greater number of counters, the greater the number of arrays you can form.
November 30, 2011

COMPUTER HARDWARE MANAGEMENT
AMD (Advanced Micro Devices) is the second largest maker of personal computer microprocessors after Intel. They also make flash memory, integrated circuits for networking devices, and programmable logic devices. AMD reports that it has sold over 100 million x86 (Windows-...
November 29, 2011

English
c
November 29, 2011

algebra
There are 7 coins in a piggy bank. The coins are all quarters and dimes. All together the total amount of money in the bank is $1.15. How many of each coin are in the piggy bank.
November 21, 2011

Physics
Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with rotational inertia 2.58 kg·m2 about its central axis, is set spinning counterclockwise (...
November 18, 2011

Social Studies
During Rutherford B. Hayes's presidential run, what's was bad or good about it?
November 16, 2011

MATH
no, why?
November 16, 2011

MATH
i need this as quick as possible please Omar is building a straight fence, with posts one meter apart. If the fence is 13 meters long, how many fence posts does he need? If the fence is 13 meters long, how many fence posts does he need?
November 16, 2011

Physics
If a&b are vectors such that a+3b=-3i+j & a-b=i-2j then find vectors a&b.
November 16, 2011

Math
A fence 8 ft tall runs parallel to a tall building at a distance of 4 ft from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
November 14, 2011

Physics
Suppose vectors a&b, if a cross b=c. Show that c is perpendicular to a&b.
November 13, 2011

math
The height of an object thrown upward with an initial velocity of 96 feet per second is given by the formula h = -16t2 + 96t, where t is the time in seconds. How long will it take the object to reach a height of 144 feet?
November 9, 2011

Sport please help me i have a test 2morrow
What are the reasons for the olympic games to be largest of all sporting events?
November 9, 2011

Sport
Why Olympia selected to hold at the ancient Olympic Games?
November 9, 2011

english 2
WHAT INFERENCE CAN YOU MAKE FROM THE FACT THAT IT IS FORBIDDEN TO GO TO THE PLACE-BY THE WATER OF BABYLON
November 9, 2011

Physics
Calculate the rotational inertia of a wheel that has a kinetic energy of 41.6 kJ when rotating at 264 rev/min.
November 9, 2011

Pre-Algebra
ok well my pre algebra teacher copied some worksheets and its pg 40 and its about some friars in a floral shop buisness. for extra credit we do the joke which is also a way to find out if our answers were correct. there is no 3/8 in my answers and welll yeah thats it.
November 8, 2011

Pre-Algebra
Ok so im in 7th grade and can somone help me with pizzazz worksheet #40? Pretty please?
November 8, 2011

chemistry
Write the formula unit, total ionic, and net ionic equation for the precipitation reaction in a beaker after Al(ClO4)3, Rb2S, and CsI salts are added. Please help!
November 7, 2011

factoring polynomials help?
5p^2+14p+8
November 6, 2011

Math
if a football team gained 13 yards in 3 tries how many yards will they gain in 9 tries
November 6, 2011

Chemistry
Sorry Dr. Bob, I wsa looking for the Sucrose, not all 16 calculations. Can you help me with the Sucrose? I have 93.954 mL of a generic cola solution. The solution contains: Molarity of H++1.005e-7 Molarity of OH- = 1.005e-7 Molarity of Sucrose(aq) = 6.386e-1 Molarity of Dye= ...
November 3, 2011

Chemistry
I have 93.954 mL of a generic cola solution. The solution contains: Molarity of H++1.005e-7 Molarity of OH- = 1.005e-7 Molarity of Sucrose(aq) = 6.386e-1 Molarity of Dye= 5.322e-3 Calculate the mass percent, molarity, molality and mole fraction.
November 3, 2011

Language Arts
I was so tired when I got home, my bed welcome me with open arms.what does this mean?
November 2, 2011

calculus
The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
November 1, 2011

calculus
The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
November 1, 2011

Math word problem
can you explain how you got it?
November 1, 2011

Math word problem
jack was 21 years older than kat. Together their ages totaled 161 years. What were their ages?
November 1, 2011

Physics
A 0.5 kg wooden block is placed on top of a 1.0 kg wooden block. The coefficient of static friction between the two blocks is 0.35. The coefficient of kinetic friction between the lower block and the level table is 0.2. What is the maximum horizontal force that can be applied ...
October 30, 2011

calculus
f(x)=cos(1/x) Find a sequence for x-values that approach 0 such that cos(1/x)=0.
October 29, 2011

chemistry
If you have a solution that is 1.7 M sodium chloride and you have 1 L of that solution, how many moles of sodium chloride do you have?
October 28, 2011

Math
Maria has $5.05 in quarters and dimes. The number of quarters exceeds twice the number of dimes by 1. Find the number she has of each kind.
October 28, 2011

Chemistry
Calculate the mass of solid neded to make 500ml of solution that is 0.25m in sulfate ion, using sodium sulfate decahydrate.
October 28, 2011

algebra
thanx :)
October 27, 2011

algebra
i REALLY need some help with this. i HATE math! :(
October 27, 2011

algebra
1. - 5(2x+2)is greater than or equal to -10x - 17 (1 point) a)x is greater than or equal to 7 b)x is less than or equal to 19 c)all real numbers d)no solution
October 27, 2011

LA/Lit.
Word withing the word analogies. primate is to primeval as coelenterate is to medieval deliberate is to archival ingrate is to credible migrate is to primal
October 25, 2011

geometry
given line segment PQ , PQ=3QR, and QR= 1/3 RS Prove: line segment PQ is congruent to line segment RS
October 24, 2011

statistics
IQ scores are normally distributed and assume that the average IQ for all Economics majors is 108 with a standard deviation of 11. What percentage of Economics majors would have an IQ of more than 118?
October 24, 2011

statistics
Suppose the amount of time it takes for statistics students to complete their midterm is normally distributed with a mean of 85.70 minutes and a standard deviation of 22.55 minutes. If 10 students are randomly selected, what is the probability that they would average less than...
October 24, 2011

geometry
triangle ABC is an isosceles right triangle. The endpoints of the hypotenuse of ABC are A(4,7)B(8,1). Find the possible coordinates for the vertex C
October 23, 2011

Alegra 2
A baseball is hit at a point of 3 feet above ground at a velocity of 100 feet per second and an angle of 45 degrees. The path of the baseball is h(x)= -0.0032(x-156.25)squared+87, where x and h(x) are measured in feet. A. what is the baseball's maximium height? B. will the...
October 23, 2011

Chem
A radiation lab orders 64uCi of P-32. After 42 days the activity of the sample is 8.0uCi. What is the life of P-32? Thanks
October 19, 2011

chemistry
I got yeah! 40---> 20----> 10 5,730---> = 11,460 years
October 19, 2011

Algebra 1
(-10/10) - (-18/9)
October 18, 2011

social studies
Lack of food, didnt know how to provide for themselves in the new world
October 18, 2011

math
3a to the third plus 12a squared minus 63a
October 17, 2011

science
The specific heat of silver is 0.057 calories/gram°C. If 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°C, how many calories of heat energy were absorbed by the sample? (A)3,508 calories (B)0.029 calories (C)11.4 calories (D)0.114 ...
October 17, 2011

chem
How many grams of H20 are produced when 140 grams of NH3 reacts by the following? Answer in 3 SF 4NH3+6NO--->5N2+6H20 Please help! Thanks
October 14, 2011

Chemistry
How many moles of CaCl2 are in 250mL of a 3.0M of CaCl2? Ca=40.08 -- Cl=35.45 X 2 ?? Thanks
October 14, 2011

pre algebra
how do you simplyfy -9+-9+-9+-9
October 13, 2011

pre algebra
how do i figure out how to write a number setence for the product on the number line -10 -8 -6 -4 -2 0 2
October 13, 2011

Physics
A 0.30 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 15° with the horizontal. Determine the speed of the stone.
October 12, 2011

physics
An object is dropped from a cliff and reaches a velocity of 47.5 m/s at the time of impact. a) How high is the cliff? b)How long did it take to hit the river below?
October 11, 2011

physics
a 75 kg person escapes from a burning building by jumping from a window 30 m above a catching net. Acceleration due to gravity is 9.81 m/s^2. Assuming air resistance is simply a constant 96 N force on the person during the fall, determine the person's velocity just before ...
October 11, 2011

math
6.2 hours...?
October 11, 2011

physics
A skier is accelerating down a 30.0° hill at a = 3.70 m/s2 ( (a) What is the vertical component of her acceleration? |m/s2 (downward) (b) How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation ...
October 11, 2011

physics
A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h = 58 m above the water's surface, as shown below. (a) How long does it take for the stone to fall to the water? s (b) With what speed does it strike the...
October 11, 2011

Physics
A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls up next to the spy's boat, both reach the edge of a 7.5 m waterfall. If the spy's speed is 19 m/s and the officials' speed is 24 m/s...
October 11, 2011

math
5464
October 11, 2011

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