Wednesday
March 29, 2017

# Posts by AMANDA

Total # Posts: 2,517

Math
An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity?
February 4, 2013

Physics
During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s with an average acceleration of 33 m/s (upward). How long did the acceleration last?
February 2, 2013

Physics
A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat
February 2, 2013

Physics
In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm?
February 2, 2013

Physics
Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg
February 2, 2013

Physics
A cheetah can run with a speed of 29 m/s. Determine the distance travelled by a running cheetah in 8.6 s
February 2, 2013

Physical Sciences
How do I calculate the initial velocity of a ball if i've only given a maximum height of 12metres above its starting point?
January 25, 2013

engineering
the pringles manufacturing company tells you that they are switching to a potato supply that has a higher moisture content than those used previously. The new supply, after being mashed an cooked, prior to drying for pringles production, now contains 70% moisture content. they...
January 17, 2013

engineering
Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what minimum diameter of ...
January 17, 2013

Math
A moving truck fills up a shipment at an od adress, at (-2,1). It travles 7 blocks south and 6 blocks east to the new adress. What is the location of the new adress? PlEASE ANSWER THIS AS FAST AS POSSIBLE!! Amanda
January 16, 2013

7th grade Social Studies from another school
I have gratitude toward this website and I have used it to check my work and get 100% I agree with all of the statements Emily has made. Thankyou! ttyl!
January 10, 2013

Negatives
32x45=__ +-67 ?
January 4, 2013

Physics
A crate is sliding down a ramp that is inclined at an angle 37.9 ° above the horizontal. The coefficient of kinetic friction between the crate and the ramp is 0.330. Find the acceleration of the moving crate.
December 19, 2012

Us history
Describe the economic policy of merchantilism in early America
December 15, 2012

jmhs help
Which of the following statements about learning styles is false? A. An individual should study using techniques that utilize his or her preferred learning style. B. An individual can learn using only his or her preferred learning style. C. Understanding your preferred ...
December 13, 2012

biology
The Eastern skunk cabbage, which blooms in very early spring, produces chemicals that smell like decaying meat. This plant has probably become adapted to mate with the assistance of A) butterflies. B) honeybees. C) flies. D) wind.
December 12, 2012

math
27 weeks.
December 10, 2012

chemistry
December 8, 2012

chemistry
how many liters of ammonia are required to react with 1 mole of oxygen gas at 850 degrees centigrade and 5 atm in order to produce nitrogen monoxide and water vapor at the same conditions
December 8, 2012

Physics
Glycerin is poured into an open U-shaped tube until the height in both sides is 20 {\rm cm}. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20 {\rm cm}. The two liquids do not mix. What is the difference in height between the top surface of...
December 7, 2012

HOW did you figure that out? I'm so confused...
December 7, 2012

Physics
A 125 ball has a kinetic energy 33.6 What is the magnitude of it's momentum? What is the speed?
December 5, 2012

Physics
Your sofa won't fit through the door of your new sixth-floor apartment, so you use a 1.19 motor to lift the 88.6 sofa 18.3 from the street. How much time does the lift take?
December 5, 2012

Physics
What power is needed to lift a 358 crate of bricks from the ground to the top of a 25.0 -high building in 1 minute?
December 5, 2012

Geometry
EF = 3x-16, FG = 2x-7, and EG = 17, find the values of x, EF, and FG
December 5, 2012

chemistry
What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g
December 5, 2012

chemistry
what total mass of product will form when 1.38 L of c3h8 at 25 degrees C and 760 torr react with 75.0 mL of 5.33 M h2cr04? a. 48.2g b.114g c. 342g d. 9.71g
December 5, 2012

chemistry
what total mass of product will form when 1.38 L of c3h8 at 25 degrees C and 760 torr react with 75.0 mL of 5.33 M h2cr04? a. 48.2g b.114g c. 342g d. 9.71g
December 5, 2012

chemistry
What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g
December 5, 2012

algebra
no, the homework was 50 questions, these are just the ones I've tried to do several times and failed miserably at.
December 4, 2012

algebra
Completely factor the following expressions. Please show work/explain t^2+4tv+4v2 4x^2-8x-12+6x 144-9p^2 5c^2-24cd-5d^2 w^2-17w+42 256z^2-4-192z^2+3 2a^2c^3-14bc^3+32c^3d^2 35g^2+6g-9 3j^3-51j^2+210j
December 4, 2012

math
to solve an inequality, you need to get y by itself, so you subtract -5 (subtracting a negative is pretty much adding a positive) from BOTH sides y+ (-5) > -6 +5 +5 ---------------- y >-1
December 4, 2012

Biology
More surface area means more capacity/ability for gas exchange. Having many smaller alveoli gives more surface area. Imagine having a single bowling ball vs dozens of baseballs.
December 4, 2012

chemistry
A buffer is made by dissolving HC2H3O2 and NaC2H3O2 in water. Write an equation that shows how this buffer neutralizes added acid. Express your answer as a chemical equation. Identify all of the phases in the answer.
December 3, 2012

trig
A 600,000-cell bacteria culture is needed for a lab experiment, but you only could purchase 1,000 cells. If the cells double each day, exactly how long will it be before the experiment can be run? Create a model for the bacteria. If the experiment is in seven days, how many ...
December 3, 2012

math
Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 75, 80, and 74. To get an B in the course, you must have an average of at ...
December 2, 2012

Geometry
In triangle EFG, M<F=3(m<G), and m<E=m<F-30degree. Find the measure of each angle.
November 28, 2012

If I am looking to support my pro capital punishment theories which of the following ethical theories would best support my stance? I must use two. Absolutism, ethical formalism, utilitarianism, hedonism-stoicism, natural law, ethics of virtue, ethics of care, egoism, cultural...
November 28, 2012

Physics
Alright but does anyone know how to solve this?
November 27, 2012

Physics
Thanks for the thought anyways!
November 27, 2012

Physics
How is asking for help on a homework help site cheating?? I don't know where to start...
November 27, 2012

Physics
Two fraternities are in a tug of war. Theta Chi is pulling with a total force of 4,748 newtons to the east and Tau Kappa is pulling with a total force of 3,969 newtons to the west. What is the magnitude and direction of the resultant? Which team will win? Is it better to pull ...
November 27, 2012

math
Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for t years. P = $24,000, r = 7%, t = 6, compounded monthly$ ?
November 27, 2012

Physics Can you help me get started
A 24-g ice cube floats in 180 g of water in a 100-g copper cup; all are at a temperature of 0°C. A piece of lead at 92°C is dropped into the cup, and the final equilibrium temperature is 12°C. What is the mass of the lead? (The heat of fusion and specific heat of ...
November 26, 2012

math
Find the present value of $31,000 due in 4 yr at the given rate of interest. (a) 6%/year, compounded quarterly$ ? (b) 3%/year, compounded quarterly $? November 26, 2012 math Find the present value of$31,000 due in 4 yr at the given rate of interest. (a) 6%/year, compounded quarterly $? (b) 3%/year, compounded quarterly$ ?
November 25, 2012

math
Find the present value of $53705.69 due in 5 yr at an interest rate of 8%/year compounded continuously.$ ?
November 24, 2012

math
Find the present value of $31,000 due in 4 yr at the given rate of interest. (a) 6%/year, compounded quarterly$ ? (b) 3%/year, compounded quarterly \$ ?
November 23, 2012

Math
Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 4%/year, compounded quarterly ? % (b) 3%/year, compounded monthly ? %
November 23, 2012

Math
Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 4%/year, compounded quarterly ? % (b) 3%/year, compounded monthly ? %
November 23, 2012

Drama
I have to find a 6-8 minute monologue for my HSC and i cant find a good site to help me if anyone has any good answers please help me i need it soon!!
November 21, 2012

statistics
what is the probability of winning a lottery with 8 numbers drawn from 52 numbers (assume you buy 1 ticket)?
November 14, 2012

science
what is an artery thattakes the oxygen rich blood to the rest of the body from the heart
November 13, 2012

math
If p is an odd prime, prove that (2/p)=(-1)^[(p^2-1)/8]
November 13, 2012

Chemistry
10, 122, 299, --> 162, 5, 122, 60, 60, 188
November 10, 2012

Chemistry
Please write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3, reacts with 3,3,4,4,5,5-hexanmethyl-1-hexyne, H-C≡C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas, H2O When balancing the equation , ...
November 8, 2012

physics
A large balloon of mass 237 kg is filled with helium gas until its volume is 318 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. (b) Calculate the buoyant force acting on the balloon.________N (c) Find the net force on the balloon and ...
November 7, 2012

calculus
a particle is moving counterclockwise around the circular path whose equation is x^2+y^2=100 of the abscissa of the particle is increasing by 72in/sec at a point where x=8 find the rate of changeof the cordinate(y) at this point
November 7, 2012

Physics
-1.7 m/s
November 6, 2012

chemistry
If 92.75 mg of Na2CO3 is dissolved in 0.5mL of water, what would be the normality of the solution after the addition of 0.67 mL of water.
November 5, 2012

english
Baldwin uses many different writing techniques in the essay. Find instances of concrete description of a person of place, action reflection, and strong argumentative assertions. How do these techniques further his specific purposes?
November 5, 2012

Biology
In humans, W=widows peak while w=normal hair line and A=attached earlobes while a= unattached earlobes. A heterozygote in both traits reproduces with a similar heterozygote in both traits. What is the chance of any one child having the same genotype of the parents?
October 30, 2012

Macroeconomics
The graph has a SRAS going up from GDP 13.7 and 110 price level GDP 14.0 and 120 price level GDP 14.2 and 130 price level
October 24, 2012

Macroeconomics
Cannot attach graph! a. If the actual price level exceeds the expected price level reflected in long-term contracts, real GDP equals _______ and the actual price level equals _______ in the short run. b. The situation described in part (a) results in a(n) _______ gap equal to ...
October 24, 2012

Physics
To start off, I will assume that 290 and 230 are in terms of rpm. Pave=(Kf-Ki)/t t=3.2 K=1/2*I(inertia)*w(omega)^2 Inertia of disc= 1/2*m*r^2 W must be in terms of rad/s, so multiply each rpm term by 2pi/30. Kf-Ki= (1/2)*(1/2*m*r^2)*(Wf^2-Wi^2) Divide Kf-Ki by t and you will ...
October 23, 2012

chem
a new compound composed of just Hex-Nuts and bolts is formed.A 13.7 Kg sample of the new compound is separated into its component elements with the following result 3.84 kg. of hex-nuts and 9.90 kg of bolts. 1. How many hex-nuts are present in the 13.7 kg sample 2. how many ...
October 22, 2012

world geography
October 17, 2012

world geo
October 17, 2012

Chemistry
Just saw that I forgat to notice that the amount of potassium hydrogenphtalate was 5.12 grams. Also, it was enough with two readings within ± 0,01 cm3
October 16, 2012

Chemistry
We had a lab where the standard solution was potassium hdrogenphthalate. In this we added 3 drops of phenolphtalein indicator and then we ran sodium hydroxide into the solution. We did four different flasks and the final readings for these then were 26.00 cm3, 32.00 cm3, 26.10...
October 16, 2012

Chemistry
Using data from the following reactions and applying Hess's law, calculate the heat change for the slow reaction of zinc with water (answer must be in kJ/mol Zn): Zn(s) + 2 H2O(l) ----> Zn^2+(aq) + 2 OH-(aq) + H2(g) (ΔHrxn = ?) H+(aq) + OH-(aq) ----> H2O(l) (&#...
October 15, 2012

Chemistry
The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy (delta H comb) (in ...
October 15, 2012

Chemistry
So q/1.283 = 3841(130.32) I know you have to divide by the molar mass which I found to be 132.169 but Im not sure which number I divide it by.
October 15, 2012

Chemistry
The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy (delta H comb) (in ...
October 15, 2012

Chemistry
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (...
October 15, 2012

Chemistry
Ok I got the answer!! Thank you!!
October 15, 2012

Chemistry
Ok, yeah I somehow read that as a label not as part of the equation, so 4685*(1.035/194.21)= 24.97 24.97*1000=24967.69 So then would the final equation be: 24967.69=7.293(Tfinal-20.142) Thank you by the way Im just really struggling with this.
October 15, 2012

Chemistry
How do you convert 4848.975 to J?
October 15, 2012

Chemistry
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (...
October 15, 2012

english
I don't know what this one is. That's why i'm here for help!
October 14, 2012

english
Which one of the following statements is true for the base forms of verb? A. when the subject of a sentence is singular, add "-s" to the base form. B. Add "to" to the base form to create an adjective. C.Do not use a base form with plural subjects. D.Add &...
October 14, 2012

english
In this sentence, what is the antecedent of the pronoun it? A. her B. Carla C.house D.work?
October 14, 2012

english
which sentance contains an incorrect plural? A.The parties ended around midnight. B. If wishes were horses, beggars would ride. C.We spotted the foxs late in afternoon. D.I hate traffic delays.
October 14, 2012

english
A. river
October 14, 2012

english
We left King ranch on a december day in 1873. On the Santa Fe trail, we hit bad weather. The Red river was flooded and it took us four days to get the Cattle across. All in all, it was a hard trail drive, but we got our Longhorns to the railroad at Abilene. Which of the ...
October 14, 2012

Which of the following shound be capitalized? a. river b railroad c drive d weather?
October 14, 2012

Math
Step 1: Find out what 10 to the 5th power is equal to. it = 100,000 Step 2: Multiply 100,000 by 10 Step 3: your answer = 1,000,000
October 11, 2012

chemistry
what is the chemical name and lewis structure of NO3 -2
October 11, 2012

Polynomials
A rock is thrown upward at a speed of 10 metres per second. The height of the rock above the ground is given by the formula h=10t-2.0t². Where h is the height in metres above the ground and t is the time in seconds. Then what is height after 5 second?
October 11, 2012

chemistry
how are the elements in a pair of isotopes the same? how do they differ? And also if you know anything about the atomic structure phrase apeman i could use some serious help right now i have a test tommoro and i cant remember all the material
October 10, 2012

chemistry
a new compound composed of just Hex-Nuts and bolts is formed.A 13.7 Kg sample of the new compound is separated into its component elements with the following result 3.84 kg. of hex-nuts and 9.90 kg of bolts. 1. How many hex-nuts are present in the 13.7 kg sample 2. how many ...
October 10, 2012

bookkeeping
Using your computer, you create a file for an existing costumer. When you're finished, you should a. overwrite the existing file by giving the new file the same name. b. use Save as to save the new file under a different name c. coordinate the old and new files b giving ...
October 9, 2012

Physics
In a head-on collision, a car stops in 0.14{\rm s} from a speed of 24{\rm m}/{\rm s} . The driver has a mass of 67{\rm kg} , 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 5, 2012

math-algebra
one pump can empty a pool in 5 days, wheras a second pump can emtpy pool in 7 days. how long will it take the two pumps, working together, to empty the pool?
October 5, 2012

chemistry
Would you expect a chemical change to be always accompanied by a physical change?Pls. Explain
October 5, 2012

chem
Write the complete ionic equation for Cu(NO3(aq)+K2S(aq)and namd write the formula for the spectator ions in this reaction? This is what I got pls. check it: complete ionic equation: Cu^19aq)+K^1(aq)+S^-2(aq)=K^1(aq)+NO3^-1(aq)+Cu2S(s) net ionic equation: Cu(aq)+s^-2(aq)=Cu2S(...
October 5, 2012

math
Number 6 is actually ( -8, -10). I took the mother F***ing test and got that answer wrong because of you guys.
October 3, 2012

Chemistry
a student conducts and experiment by reacting 39.6g CuSO4 with an excess of MgS. The reaction yields 9.5599g CuS. What is the percentage yield? MgS+CuSO4=CuS+MgSO4
October 3, 2012

Geometry
Find the measure of each angle in a triangle with angles: x, (x-135), and 1/10 x
September 30, 2012

chemistry
A 27.00 mL sample of an unknown H3PO4 solution is titrated with a 0.110 M NaOH solution. The equivalence point is reached when 25.78 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction is: H3PO4(aq) + 3NaOH(aq) -&...
September 27, 2012

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