Tuesday
October 13, 2015

# Posts by Allie

Total # Posts: 299

English (Mrs,Sue!!)
Mrs.Sue, I wrote a paper on research proposal. Now, my teacher is asking us to write the steps on how we wrtoe the paper. Can you reword these questions for me? thank you so much!! "What techniques did you use as you thought through the issue? " "What prewriting...
May 3, 2012

April 23, 2012

physics
+y| / F | / | / | / /a_ _ _ _ _ +x 40N This is pretty much what the picture looks like. Your answer was incorrect!
April 20, 2012

physics
"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
April 20, 2012

physics
"Only two forces act on an object (mass = 3.90 kg), as in the drawing. (F = 76.0 N.) Find the magnitude and direction (relative to the x axis) of the acceleration of the object. " (The angle is 45 degrees and the horizontal force is 40N)
April 20, 2012

Math
April 12, 2012

Math
Thank you!!
March 15, 2012

Math
R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?
March 15, 2012

Math
for his new room Daren will need 154 feet sq of wall to wall to cover of his new square room. what is the length of each wall of his room?
March 13, 2012

statistics
How do you find standard deviation?
February 27, 2012

Physics
a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the box b. determine the ...
February 25, 2012

Chemistry
Yes it does. Thanks.
February 10, 2012

Chemistry
my work: 243.228= 18.0153 * 4.184* (Tfinal-Tinitial) 1825.228=75.376Tfinal Tfinal= 24.2149 I got this answer and it is incorrect. can u please help me? and confirm the right answer. thanks :)
February 10, 2012

Chemistry
I have this same question on my hw and it is marking me wrong. Can someone please say what the right answer is or confirm it?
February 10, 2012

Chemistry
I still don't get how to do it. I did what you said and it keeps marking me incorrect :(
February 10, 2012

Chemistry
No this is a different person. Thanks I got it.
February 10, 2012

Chemistry
At constant pressure, which of these systems do work on the surroundings? Check all that apply. 2A (g) + B(s) --> 3C(g) 2A (g) +2B (g) -->5C(g) A(g)+ B(g) --> C(g) A (s) +2B(g)--> C(g)
February 10, 2012

Chemistry
For a 5.0 g sample of CoCl3·9H2O, what weight of water (in grams) will be lost if the sample is heated to constant weight (all water driven off)?
February 6, 2012

Film Literature
What was the first comedy movie ever made?
January 27, 2012

math
at a local community college, it costs 150 to enroll in a morning section of an algebra course. Supopose that the varible n stands for the number of students who enroll. then 150n stands for the total amount of money collected for this course. how much is collected if 41 ...
January 26, 2012

teh density of copper is 8.92 g/cm3. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?
January 20, 2012

Intro to Psychology 1
A behaviorist is asked to evaluate five students in the second grade who exhibt impluse control problems.The behaviorist decides it is best initially to study them in the classroom without interferring with the behavior.This behaviorist is conducting _____ research. A.) survey...
December 23, 2011

Biology
ok thank you!
December 6, 2011

Biology
yes i had read this previously, i guess im just not sure how to apply this to the question. any suggestions?
December 6, 2011

Biology
can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of ...
December 6, 2011

biology
If im thinking correctly Aristotle paired things with similar characteristics. I would do some quick research on him before answering but I would go with D.
December 6, 2011

math
number of people who hear a rumor after t hours is N(t) = 2000/ 1 + 499e^-0.3t How long will it take for 200 people to hear the rumor?
December 3, 2011

Physics
Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is the machine using in...
December 2, 2011

Physics
Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation mechanism, what would be ...
December 2, 2011

Physics
An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J
December 2, 2011

Math
The answer is no solution, unless ur teacher says it has one. I had ethe same problem and its no solution. Hope this helps
December 1, 2011

Finance
For the first time in a very long time (perhaps ever!), the concept of financial risk and risk management has become a topic of concern at Presidential press conferences. Such concern has centered on esoteric financial products such as derivatives that are used to manage risk...
November 14, 2011

science
what change of state happens when a gas loses energy?
November 4, 2011

bio
what is the cisternal maturation hypothesis for Golgi apparatus function?
November 2, 2011

bio
how does the explosive polymerization of G-actin propels L. monocytogenes through the cytoplasm?
November 2, 2011

bio
what is a mechanism for how EB1 can mediate the extension of ER cisternae along microtubules?
November 2, 2011

I think it does-so I was okay when I used mejor que in my sentence? I wasn't suppose to change anything??
November 2, 2011

I'm not sure what you meant by correcting this sentence--Thank you for any further explanation you can give-- 3. Tocar el piano es______tocar la guitarra. (+bueno) Tocar el piano es mejor que tocar la guitarra. You said in an earlier post: mejor que(irregular - or ...
November 2, 2011

Spanish
For number ten and eleven above I think I put the wrong answer. To place verb in present progressive it would be: 10.Yo escucho it would be Yo estoy escuchando, correct? 11. nosotros hablamos would be Nosotros estamos hablando, correct? Thank you
November 2, 2011

Spanish
Please check these- Fill in comarative form for the first three: 1.Surfear es ____ interesante (cazar.) Surfear es más divertido que cazar. 2.El fútbol es ____ el golf.(interesante) El fútbol es más interesante que el golf. 3. Tocar el piano ...
November 2, 2011

For the ellipse (x-2)^2/49 + (y+1)^2/25=1 List center: (2,-1) the foci: -(sqrt 74) AND +(SQRT 74,0) Major axis: x=2 Minor axis: y= -1 Vertices: (7,0) (-7,0) (0,5) (0,-5) Is this correct?
November 1, 2011

Physics
A ball has a diameter of 3.70 cm and average density of 0.0841 g/cm3. What force is required to hold it completely submerged under water? I need to find the magnitude in N Thank you!
October 27, 2011

Physics
(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an underwater vehicle at ...
October 27, 2011

physics
Four objects are held in position at the corners of a rectangle by light rods . m1 2.90(kg) m2 1.90(kg) m3 4.50(kg) m41.90 (kg) (a) Find the moment of inertia of the system about the x-axis. Answer in kg · m2 (b) Find the moment of inertia of the system about the y-axis...
October 26, 2011

Economics
can you help me brain storm? I want some points on why Per Capita GDP might be a bad way to compare wellbeing across countries.
October 23, 2011

Chemistry 105
(729-Pw) =?
October 23, 2011

history
I don't understand what is meant when a question asks you for the "term" Historical significance. for example:john maynard keynes. I know everything about him and his economic ideas but, if i was asked to write a short paragraph of his historical significance i ...
October 22, 2011

critical thinking
technical jargon used by people in the same field can be an acceptable used of language. true of false.
October 22, 2011

Physics*
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and...
October 20, 2011

Physics*
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 575 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,000 rev/min. (a) Find the kinetic ...
October 20, 2011

Physics*
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 70.0-gram mass is attached at the 16.0-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance. What is the mass of the meter stick? Answer in grams
October 20, 2011

social studies
name two helpful developments in georgia and the rest of the country that occurred after the Revolutionary War
October 20, 2011

Physics
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.70 m and 0.99 m, respectively. The respective rotational speeds are 454 rev/min and 4,147 rev/min. Calculate the speeds of the tips of both rotors. main rotor =180.6625215m/s tail rotor ______m/...
October 10, 2011

Physics
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1x10^4 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. rad
October 7, 2011

Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 7.0-kg object at the origin of the coordinate system, a 8.0-kg object at (0, 2.0), and a 17.0-kg object at (4.0, 0). Find the resultant ...
October 6, 2011

Physics
A satellite has a mass of 99 kg and is located at 1.97 106 m above the surface of Earth. (a) What is the potential energy associated with the satellite at this location? Answer in J (b) What is the magnitude of the gravitational force on the satellite? Answer in N
October 6, 2011

Physics
A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10−16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10−11 N. At how many revolutions per second should the centrifuge be ...
October 6, 2011

Physics
A 54.9-kg ice skater is moving at 4.09 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.803 m around the pole. (a) Determine the force exerted by the horizontal rope on her arms. Answer in N (b) ...
October 6, 2011

Physics
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1 104 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this period. rad
October 6, 2011

critical thinking (just explain the question plz)
can u explain this question for me or rephrase it because i dont understand what it means by fact-based subject matter or value-based subject matter. Does your hypothesis test fact-based subject matter or value-based subject matter? Briefly explain.?
October 5, 2011

Physics
A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.
October 4, 2011

Physics
A 79.0-kg fullback running east with a speed of 4.00 m/s is tackled by a 93.0-kg opponent running north with a speed of 3.00 m/s. (a) Why does the tackle constitute a perfectly inelastic collision? (b) Calculate the velocity of the players immediately after the tackle. ...
October 4, 2011

Physics
Question Part Points Submissions Used A 45.0-kg girl is standing on a 160-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.44 m/s to the right...
October 4, 2011

Physics
The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average force on the ...
October 4, 2011

Physics
A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0037 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.7 102 ft/s, find the average force ...
October 4, 2011

True or false: It is the case that if an argument is inductively correct then the conclusion is factually correct as well
October 4, 2011

cell bio
Sketch a transition phase diagram with two curves; one for C18:0 and a second for C18.1. Label X and Y. Add a third curve for what you might predict would happen if a nonionic detergent like Triton X-100 were present in the C18:0 preparation
October 2, 2011

cell bio
NTP hydrolysis is used in two ways to drive directionality of the targeting and translocation phases of secretion. What are the principles of these two mechanisms?
October 2, 2011

Calculus
f'= 2x+5 F'(1) is 7
October 2, 2011

Chemistry
September 29, 2011

Chemistry
Calculate the volume of 2 M acetic acid needed to prepare 50 ml of 0.1 M acetate buffer.
September 29, 2011

Physics
When a 3.00-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.07 cm. (a) What is the force constant of the spring? N/m (b) If the 3.00-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on ...
September 27, 2011

Use the supply and demand model to explain what happens to the equilibrium price and the equilibrium quantity for frozen yogurt in the following cases. d.There is a sudden increase in the price of milk. im confused with this one.
September 27, 2011

economics
Can you please exlain to me if I'm wrong not just correct me. ps. Ceteris paribusor the following markets, show whether change causes a shift in supply curve, a shift in demand curve, a movement along the supply curve, and/or a movement along the demand curve. a.housing ...
September 26, 2011

Math
(1/25)^1/2 i know the answer is 0.02 but how do you find it in a fraction without using a calc?
September 25, 2011

physics
A eye pupil of 1 cm diameter can resolve about what angle in radians? First of all I don't understand what they mean by resolve. Resolve the light coming into the eye?
August 31, 2011

physics
the equation that I think I need is P = P0 + ρgh where P is 1 atm and P0 is 1/3 atm but I get a height of 3.06 x10^-4 meters which seems like a vvery small amount
August 15, 2011

physics
suppose you were able to blow air out of your mouth at one third of an atmosphere pressure. How tall a column of water could your mouth air pressure push up a straw? I know atm pressure is 1 atm but I'm really confused about how to go about this problem. thanks!
August 15, 2011

math/physics
The ratio of the mass of your body (50 kg) to a dollar bill(1 gram) is? body: 50 kg= 50,000 g 50000/1 so the ratio is 50,000? (That seems like too much to me)
August 14, 2011

Physics
Clap your hands and estimate the energy and power released as sound waves. I know Kinetic energy= 1/2*m*v^2 and Power is KE/t but how do I find the velocity of the sound wave made from clapping my hands? and for the mass do I use the mass of my hands? thanks
August 13, 2011

mat
harvest cereal comes in boxes of different sizes.the regular box holds 7/8 pounds.the small box holds 2/3 as much. How much cereal does the small box hold?
May 2, 2011

physics
A skier of mass 72 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 2.7 m/s? (b) What power must a motor have to perform this task?
March 20, 2011

chemistry
What is my theoretical yield of iron II chloride if I start with 34 grams of iron II bromide?
March 13, 2011

physics
Find the height from which you would have to drop a ball so that it would have a speed of 6.6 m/s just before it hits the ground.
March 11, 2011

physics
A projectile is launched with a speed of 41 m/s at an angle of 55° above the horizontal. Use conservation of energy to find the maximum height reached by the projectile during its flight.
March 11, 2011

physics
A sledge loaded with bricks has a total mass of 18.9 kg and is pulled at constant speed by a rope inclined at 19.3° above the horizontal. The sledge moves a distance of 19.8 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0...
March 9, 2011

physics
A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
March 9, 2011

physics
A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.5 m/s as in the figure below. If his speed is 27.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.
March 9, 2011

heart
how long does it take to design, test, and get FDA approval of an artificial heart valve?
February 21, 2011

Relative Acidities
Rank the given compounds on their relative acidity. Here was the order I thought it was but it turned out to be wrong. (i based it based off of sp being most acidic and sp3 being least acidic) STRONGEST HC(triple bond)C-CH3 H2C=CH2 CH3NH2 H2O CH4--> WEAKEST and then I ...
February 16, 2011

ochem
list from strongest acid to weakest acid HC(triple bond)CCH3 H2C=CH2 H3CNH2 CH4 H2O i thought the order went HC(triple)CCH3 H3CNH2 H2O H2C=CH2 CH4 but it comes out as wrong and i dont know why >
February 14, 2011

Biology- DNA
What is needed to synthesize DNA? -a DNA strand -a primer and is that it?
February 7, 2011

Complex Numbers
Oh thank you so much i forgot that when you that the square root of a negative you get the complex #
January 31, 2011

Complex Numbers
How do I go about finding the solutions to the following x^2-6x+25=0 I know the answer is 3-4i and 3+4i however, I do not know how to go about finding the these solutions Thanks :)
January 31, 2011

Math
of the 43 presidents 15 were elected to 2 terms. what fraction of us presidents were elected two terms? HELP! I have been at this one for over two hours and I can't come up with the answer.
January 9, 2011

bio
according to Stephens, when are learning behaviors expected to evolve?
December 17, 2010

math
find the slope and y-intercept of the line in the given equation: y=6/7x-4
December 16, 2010

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