Questions Asked on
November 20, 2011

phyics (PLEASE PLEASE READ)
a bicyclist is finishing his repair of a flat tire when a friend rides by at 3.5 m/s. two seconds later, the bicyclist hops on his bike and accelerates at 2.4 m/s^2 until he catches his friend? (a) how much time does it take until he catches his friend?
asked by taylor 
chemistry(Urgent Please help)
A student is asked to standardize a solution of barium hydroxide. He weighs out 0.945 g potassium hydrogen phthalate (KHC8H4O4, treat this as a monoprotic acid). It requires 33.9 mL of barium hydroxide to reach the endpoint. A. What is the molarity of the
asked by Hannah 
physics
A ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity
asked by Michaela 
chemistry
sulfur dioxide (g) + oxygen (g) sulfur trioxide (g) SO2 + O = SO3 Is this correct for the balanced equation?
asked by Hannah 
PHYSICS PLEASE HELP!!
A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 9.15×10−23 kg . m/s and 5.19×10−23 kg . m/s, respectively. 1.)What is the magnitude of
asked by paul 
Electrical Circuits
find the number of free electrons in a copper conductor having a diameter of 0.064 in. and a length of 1000ft.
asked by Marc Eugene Adriano 
algebra
The halflife of plutonium234 is 9 hours. If 40 milligrams is present now, how much will be present in 4 days? (Round your answer to three decimal places.)
asked by meghan 
ALGEBRA
From a survey of 100 college students, a marketing research company found that 65 students owned iPhones, 40 owned cars, and 30 owned both cars and iPhones. (a) How many students owned either a car or an iPhone (but not both)?
asked by MONICA 
Physics
In many locations, old abandoned stone quarries have become filled with water once excavating has been completed. While standing on a quarry wall, a boy tosses a piece of granite into the water below. If he throws the rock horizontally with a velocity of
asked by Kaegan 
math
Bill Spread, owner of the Bedding Shop, knows that his customers will pay no more than $300 for a comforter. Assume Bill wants a 30% markup on selling price. What is the most he could pay the manufacturer. for thid comforter?
asked by andrea 
chemistry
Balance the following redox reaction occurring in acidic solution Cu(s) + NO3(aq)> Cu2+(aq) +NO2(g) This is what I have done so far Cu>Cu2+ + 2e 2H + NO3 > NO2 + H2O Need help please
asked by Monique 
Chemistry
practice exam...not sure how to do this A solution contains 10.0 mmol of H3PO4 and 5.0 mmol of NaH2PO4. How many millimeters of 0.10 M NaOH must be added to reach the second equivilence point of the titration of the H3PO4 with NaOH?
asked by Minx64 
physics
A 45.7kg boy on a swing moves in a circular arc of radius 3.80 m.At the lowest position, the child's speed reaches 2.78 m/s. Determine the magnitude of the tension in each of the two vertical support chains
asked by khan 
AP Calculous
let f be the function defined by f(x)=3X^5 5X^3 +2 a) on what interval is f increasing? b) on what interval is the graph of f concave upward? c)Write the equation of each horizontal line tangent to the graph of f
asked by Yoona 
broward college
a decrease in demand for a product, holding other things constant, will
asked by anthony 
math
tan theta= 15/8 and pi< theta
asked by unknown 
PHYSICS PLEASE HELP!!
A tennis ball of mass= 0.058 kg and speed= 19 m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. What is the magnitude of the impulse given to the ball?
asked by Mel 
math, functions
stefan has set up a right triangle EFG on the side of a river such that FG measures 20m and angle DEF measures 60 degrees. EG bisects angle DEF. determine the width of DG.
asked by yess 
Chemistry
Calculate the molar heat of neutralization in kJ/mol of the reaction between HA and BOH given the following information: The temperature change equals 8C, 50 mL of 1 M concentration of Acid 50 mL of 1 M concentration of Base Heat capacity of the
asked by Melissa 
Chemistry
Using grammatically correct English sentences describe how the nature of the bonding in MgF2 (s) and Zn(s) differ. (Don't just name the different types of bondingdescribe how they are different. Which of the following are metallic? F2(g), Co(s), NaCl(s),
asked by Matt 
physics
A car traveling at 91.0 km/h approaches the turnoff for a restaurant 30.0 m ahead. If the driver slams on the brakes with an acceleration of 6.40 m/s^2, what will her stopping distance be?
asked by molly 
college chemistry
Hydrogen gas is produced when zinc reacts with sulfuric acid: Zn(s)+H_2SO_4(aq)ZnSO_4(aq)+H_2(g) If 160 mL of wet H_2 is collected over water at 24 Celsius and a barometric pressure of 739 torr, how many grams of Zn have been consumed? (The vapor
asked by jas 
physics
a 1.29 kg ball is connected by means of two massless strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The tension in the upper string is 38 N. The length of both strings is 1.70m and the distance between the strings on the
asked by K 
PLEASE HELPPHYSICS HW
A 130 kg astronaut (including space suit) acquires a speed of 2.80 m/s by pushing off with his legs from an 2000 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the
asked by m 
physics
what is the length of the shortest pipe closed on one end that will have a fundamental frequency of 60 hz on a day when the velocity of sound is 340 m/s?
asked by j. boateng 
Calculus
A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 40 feet?
asked by A 
geometry
Find the value of x in the kite below. TU = 15x – 23 and UV = 3x + 37
asked by Kodah 
business math
Matty Kaminsky owns a new Volvo. His June monthly interest was $400. The rate is 8 ½ percent. Matty's principal balance at the beginning of June is: (Use 360 days)
asked by tony 
Further mathematics
An exponential sequence of positive terms and a linear sequence have the same first term.the sum of their first terms is 3 the sum of their second terms is 3/2,and the sum of their third terms is 6.find their fifth terms.
asked by Tosin 
physics
Draw a block and tackle system of pulleys with a velocity ratio of 5 is used to raise a mass of a 25kg through a vertical distance of 40cm at a steady rate.
asked by Sherif 
Health
Which one of the following types of training involves 10 to 30 minutes of highintensity exercise? A. Medium range B. Anaerobic C. Interval D. Long, steady distance i think its either b or a?
asked by Anonymous 
Chemistry
Larger amounts of methane, in the form CH4*6H20 is trapped at the bottom of the ceans in Clatharate compunds (formed when small molecules occupy the empty spaces in cage like structures). Calculate the mass of methane gas trapped with in one Kg of the
asked by Devin Boutte 
geometry
Point D is the incenter of triangle ABC. Write an expression for the length x in terms of the three side lengths AB, AC, and BC.
asked by Anonymous 
health
4. What is the ideal length of time for a cooldown following an intense workout? A. 15 to 20 minutes B. 5 to 15 minutes C. 0 to 3 minutes D. 3 to 5 minutes i think its b?
asked by Anonymous 
socials
I compare wartime propaganda posters. first one is  remember hong kong! i google search it and it come. message it give out i cant tell. it look like japanese soldier standing and little white girl below. i think maybe show innocence. images used to
asked by Mohammad 
chemistry
Am I headed in the right direction. Sn + MnO4 > Sn2+ + Mn2+ Sn > Sn2+ + 2e 5e + 8H + MnO4 > Mn2+ + 4H2O If Im right what is the whole number that Im multiplying by
asked by Monique 
physics
On a brisk walk a person burns about 325 Cal/h at this rate how many hours of brisk walk would it take to lose a pound of body fat
asked by bently 
physics
A ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity
asked by Michaela 
fitness
VO2max is related to which one of the following choices? A. The efficiency of the body to secrete perspiration and take in lactic acid B. The efficiency of the body to take in oxygen and eliminate carbon dioxide C. The efficiency of the body to take in
asked by Anonymous 
Finance
Th e Seneca Maintenance Company currently (that is, as of year 0) pays a common stock dividend of $1.50 per share. Dividends are expected to grow at a rate of 11 percent per year for the next four years and then to continue growing thereaft er at a rate of
asked by Stacie 
physics
A child spins a bucket in a vertical circle with a radius of 65 cm. The weight of the contents seems to change as bucket rises and falls along the circular path. How fast must the bucket travel at the top of the circle so the contents seem to wight 2 times
asked by Jason 
health
Before beginning a vigorous aerobic exercise routine, all adults should A. undergo a thorough physical examination. B. hire a personal trainer. C. successfully lose five pounds. D. change their daily eating habits. i think its a is this correct?
asked by Anonymous 
Calculus optimization
A rectangular storage container with a lid is to have a volume of 8 m. The length of its base is twice the width. Material for the base costs $4 per m. Material for the sides and lid costs $8 per m. Find the dimensions of the container which will minimize
asked by A 
Fitness
Which of the following conditions may occur if a person often abruptly stops an intense cardio workout without cooling down? A. Hypertension and diabetes B. Stroke and insomnia C. Irregular heartbeat and arrhythmia D. Aneurysm and heart attack i think its
asked by Anonymous 
physics
a football punter accelerates from rest to a speed of 8 m/s during the time in which his toe is in contact with the ball (about 0.21 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?
asked by marissa 
world history
I need to put these history dates in Chronological order to fill out a history chart on Buddhism. I am not sure the correct order and don't want to get the whole chart wrong. Please help. 5th century B.C.E. 350 C.E. 500 C.E. 819 C.E. Early 9th century C.E.
asked by Allura 
Further mathematics
An exponential sequence of positive terms and a linear sequence have the same first terms.the sum of their second terms is 3/2 and the sum of their third terms is 6.find their fifth terms.
asked by Tosin 
Physics
What type of mirror is used whenever a magnified image of an object is needed? They say its convex but why? i though convex mirrors reduce an abject ?? plz help
asked by Anonymous 
astronomy
Calculate the tidal force experienced by Io. How does it compare to the tidal force experienced by the Moon due to the Earth? What would the EarthMoon distance (i.e., distance between their centres) need to be in order for the Moon to experience similar
asked by roach 
Fitness
Experts agree that the minimum time period for cardiorespiratory benefit from exercise is _______ minutes. A. 10 B. 60 C. 30 D. 20 i think its d. 20 is this correct?
asked by Anonymous 
physic
Two people with a combined mass of 130 kg hop into an old car with wornout shock absorbers. This causes the springs to compress by 9.50 cm. When the car hits a bump in the road, it oscillates up and down with a period of 1.66 s. Find the total load
asked by shaz 
calculus
A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 30ft, find the dimensions of the window so that the greatest possible amount of light is admitted. I keep screwing up in creating my equation. p =
asked by Daniel 
Chemistry
If the distance from the Earth to the moon is 3.84 x 105 km. How long would it take a radio wave with wavelength 413.8 m to travel from Earth to the moon? C=(lanbda)v & E=(h)v
asked by Lizzy 
Chemistry
A 8.71 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 25.0 mL of 0.388 M barium hydroxide are required to neutralize the hydroiodic acid, what is the percent by weight of hydroiodic acid in the mixture? I
asked by Hannah 
physics
A 4.0 kg block is put on top of a 5.0 kg block. To cause the top block to slip on the bottom one while the bottom one is held fixed, a horizontal force of at least 16 N must be applied to the top block. The assembly of blocks is now placed on a horizontal,
asked by Sadi 
trig
Find the exact value of the trigonometric function given that sin u = − 8/17 and cos v = − 3/5. (Both u and v are in Quadrant III.) cot(v − u)
asked by Alexander 
science
The heaviest invertebrate is the giant squid which can have a weight of 1.6 tons spread out over its lenght of 60 feet. What is its weight in newtons?
asked by Maria 
phyics (PLEASE PLEASE READ)
a model rocket rises with constant accerleration to a height of 3.2 m, at which point its speed is 26.0 m/s. (a) how much time does it take for the rocket to reach this height? (b) what was the magnitude of the rocket's acceration? (c) find the height and
asked by taylor 
physics
If the brisk walk were done at 4.0mi/h how far would the student have to walk to burn pound of fat
asked by bently 
economics
Explain how resources are allocated in a market economy. what should i talk bout,well i should i talk about the 3 types of economics system like fixed economy,free market,planned market and command market?
asked by Pallavi 
chemistry
Please explain this to me 2I > I2 + 2e Cr2O72 ==> Cr3+ 6e + 14H + Cr2O72 ==> 2Cr3+ + 7H20 I don't understand how the left side gets 6 electrons.
asked by Monique 
math
according to a recent survey 38% of americans get six hours or less of sleep each night. if 75 people are selected to participate in a sleep survey, find the probability that 30 or more of them get six hours of sleep each night
asked by joe 
Pratical English
11. Which sentence below contains a correctly used modifier in italics? A. He spoke sharply to his sister. B. I feel goodly now that I'm over the flu. C. Joe looked sad at his broken bike. D. The sauce tasted bitterly, and I couldn't swallow it. 12. Which
asked by Anonymous 
physics
Three point charges are on the x axis: −2 ¦ÌC at −3 m, 8 ¦ÌC at the origin, and −10 ¦ÌC at 3 m. Find the force on the first charge. The value of the Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2.
asked by Anonymous 
physics
a bag of sugar weighs 5.00 lb on earth. What would it weigh in newton on the moon, where the free fall is onesixth that of the earth?
asked by marissa 
math
what is the concentration of a sugar solution that contains 8g sugar dissolved in 500 ml water? answer in the form of a ratio
asked by cheryl 
Physics
An organ pipe that is closed at one end has a fundamental frequency of 122 Hz. There is a leak in the church roof, and some water gets into the bottom of the pipe, as shown in the Figure. The organist then finds that this organ pipe has a frequency of 300
asked by Jon 
Math problem
The formula b=29a is used to estimate the minimum furnance output B in btus for a modern house with the amount of square feet of flooring A 1. determine the minimum furnance output for a 2300 ft2 modern house 2. solve the formula A
asked by Avery 
science
Which of the following must occur for a mismatch error to be repaired? Which is the best answer, I think it's A or B. A)Damaged DNA must be identified by DNA repair proteins B)The sequence of nucelotides in the damaged DNA sequence must guide the synthesis
asked by jake 
Chemisty
What is the molarity of the hydrochloric acid solution used if 25mL of it reacted with excess calcium carbonate to produce 5.3g of calcium chloride? CaCo3(s) + 2HCl(aq)> CaCl2(aq) + CO2(g) + H2O(l) I am really confused on even what this question is
asked by Jenn 
physics (PLEASE PLEASE READ)
referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have the same effect on your speed, say 7.0 m/s, would the patch have the same effect on your speed? that is, assuming the sandy
asked by taylor 
Physics
An organ pipe that is closed at one end has a fundamental frequency of 122 Hz. There is a leak in the church roof, and some water gets into the bottom of the pipe, as shown in the Figure. The organist then finds that this organ pipe has a frequency of 300
asked by Physics Help! 
Calculous
let f be the function defined by f(x)=12x^2/3 4X a)find the intervals on which f is increasing I got the rest of the question but I'm still not getting the increasing/decreasing thing
asked by Yoona 
math
The runway of an airfield faces west. An airplane, flying in the direction of northeast at a height of 2km and at a speed of 400km/h, on a path which passes over a point 3km west of the runway end, is spotted sqrt(29)km horizontally(southwestern
asked by Jainee 
statistics
Find 10th, 60th and 75th percentiles in each of your data set, then write down each value that corresponds to those percentiles. Now use those values to find sample percentiles empirically (Suppose value “a” corresponds to 10th percentile in my
asked by metu 
chemistry
If a gram of water at sea level is heated from 37 degrees Celsius to 101 degrees. How much heat would be absorbed by the water?
asked by john 
Calculous
A particle moves along the caxis so that at time t its position is given by x(t)=t^26^t+9t+11 a)What is the velocity of the particle at t=0 b)During what time intervals is the particle moving to the left? c)What is the total distance traveled by the
asked by Yoona 
AP Physics C
An earth satellite, the mass of which is 1000 kg, is in a circular orbit 1000 km above the surface of the earth. It is desired to transfer it to a circular orbit 1500 km above the surface. The amount of work that must be done to accomplish this is A. 3.43
asked by Maxium 
Physics
A car travels at 30 mph can stop in 100 feet. What distance might it stop in when traveling at 70 mph?
asked by bz 
math
Joyce took out a loan for $21,900 at 12 percent on March 18, 2007, which will be due on January 9, 2008. Using ordinary interest, Joyce will pay back on Jan. 9 a total amount:
asked by tony 
calculus
find the rms value of the function i=15(1e^1/2t) from t=0 to t=4
asked by Alan 
algebra
an insect flies 20 ft. in 1 s. how fast does the insect fly in miles per hour? round to the nearest hundredth if necessary.
asked by emi 
chemistry
Consider the following reaction: C6H5CL+C2HOCL3=>C14H9CL5+H20 If 1142 g of C6H5CL is reacted with 485 g of C2HOCL3, what mass of C14H9CL5 would be formed?
asked by Clara 
Math
the figures are similar. the are of one figure is given. find the area of the other figure to the nearesr whole number. the area of the larger triangle is 1,589 ft squared
asked by Anonymous 
english
Hello! I am a senior student who lives in Paris, therefore English is my seocnd language. I need help to my examen oral. Tomorrow, I have to talk about: "Occupy Wall Street" movement (what's happening? analyzing the situation, is the movement important?
asked by V 
math
what are the next 3 terms? 12288, 3072 768 192
asked by Anonymous 
calculus
The top and bottom margins of a paster are each 6 cm and the side margins are each 4cm. If the area of printed material on the poster is fixed at 384cm^2, find the dimensinos of the poster with the smallest area. I would like to know if my work is correct.
asked by Daniel 
Pre calculus
A window is made up of a circle embedded in a rectangle so that the diameter of the circle is a side of the rectangle. Find the demensions that will admit the most light if the perimeter ofthe window is 44 meters.
asked by Haley 
Calculus
Differentiate x^2*y^2 = (y+1)/(x+1) in terms of x and y. PS My answer is unfortunately at odds with that provided by the authors of the book (i.e. y (y+1) (3x+2) all over x (x+1) (y+2), and I don't know whether it's a misprint or my method is wrong.
asked by Helga 
geometry
ABCD is a rectangle. If AC=5x+2 and BD=x+22, find x.
asked by Maggie 
physics
a 8.0 kg object undergoes an acceleration of 2.2 m/s squared.what is the resulting force acting on it?
asked by marissa 
chemistry
A 28.4 L sample of methane gas is heated from 35.0 C to 76.0 C. The initial pressure of the gas is 1.00 atm at 35.0 C. Assuming constant volume, what is the final pressure of the gas
asked by sandy 
socials
last poster is the : If they overrun canada your money'll be useless... it right here h t t p : //img341.imageshack . us/img341/3655/214417bhocwbbv . j p g message i don't know who this message pointing at but it look like they say don't give your money
asked by Mohammad 
Math problem
1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within
asked by Avery 
CALCULUS
evaluate the integral of (e^3x)(cosh)(2x)(dx) A.(1/2)(e^5x)+(1/2)(e^x)+C B.(1/10)(e^5x)+(1/2)(e^x)+C C.(1/4)(e^3x)+(1/2)(x)+C D.(1/10)(e^5x)+(1/5)(x)+C
asked by Tracy 
Chemistry
The space shuttle uses fuel cells( AFC's) to produce electricity . In these fuel cells,O2 reacts with water and electrons to produce OH ioins travel to the other electrode where they react with H2 to release electrons and produce more water. Based on this
asked by Devin Boutte 
chemistry
Balancing redox equations reactants: Cu, NO3^ (the negative sign is nex to the O, above the 3). products: Cu^2+, NO2 Medium: Acidic Cu+ NO3^ > Cu^2+ + NO2 Okay, I don't understand how to do this problem...but something someone needs to clear up for
asked by Anonymous 
linear math
Let u=(2,0,k,1) v=(4,0,3,2) and w= (0,1,0,0). Each answer must be justified(there is no answer where k=nothing) a) find all values of k, (if any) for which u is orthogonal to v b) Find all values of k (if any) for which the set {u,v,w} is linearly
asked by Simon 
Biology 11
the genotype of the hybrids of two purebreeding pea plants that each have white flowers and round seeds (both traits dominant) would be?
asked by Josh 
NJHS Application
What does it says in the NJHS Application when they give it to you?
asked by Laruen 
science
what is the concentration of a sugar solution that contains 8 g sugar dissolved in 500 ml of water? explain in ration form
asked by cheryl 
chemistry
what mass of barium sulphate can be produced when 100.0 ml of a 0.100M solution of barium chloride is mixed with 100.0 ml of a 0.100M solution of Iron(lll) sulphate?
asked by NONO 
mechanic fluid
A kite weighs 9.8N having an area of 1m square makes an angle of 7.5 degree to the horizontal when flying in a wind at speeds of 35km/h. If the pull on the string attached to the kite is 50N and is inclined to the horizontal 45 degree. Determine the lift
asked by ragu 
physics
the occupants of a car traveling at 25.7 m/s become weightless for an instant when traveling over the top of a hill. Calculate the radius of curvature of hill
asked by Jason 
poetry
what is the theme for Robert Frost's poem "After ApplePicking"? My long twopointed ladder’s sticking through a tree Toward heaven still, And there’s a barrel that I didn’t fill Beside it, and there may be two or three Apples I didn’t pick upon
asked by Shellby 
High School Chemistry
Explain the reaction mechanism of the following reaction by showing the types of bond splitting and atom rearrangements. C + O2 = CO2
asked by Elijah Bowie 
trigonometry
if cosθ=2/3 and tanθ
asked by Yulieth 
world history
Which of the following was a Chinese school of thought during the fourth century B.C.E. that denounced ethics in favor of obedience? A. Buddhism B. Confucianism C. Daoism D. Legalism i concluded D what you think
asked by firedup 
Pre Calculus
Find a third degree polynomial P(x) that has zeros at x=1, x=1, x=2 and whose xterm has coefficient 3?
asked by Josh 
material & structure laboratory
Is the measured normal consistency lies in the range for the Portland cements?
asked by nurul 
Algebra
How do I create a quadratic equation that passes through the points (1,2),(1,7),(4,5)?
asked by MV 
Law
A retirement plan based on age in which an employer offers $10,000 as a base early retirement incentive for 55yearolds, $8,000 for 56yearolds, and so on, and nothing to persons age 60 or older. Does such a plan amount to illegal age discrimination? My
asked by Bryan 
Math homework
Please help me to solve In your industrial oven, you bake two baking sheets with 12 scones each, two baking sheets with 20 cookies each, and one baking sheet with 2 scones and 10 cookies Write an expression that illustrates the total cost of all baked
asked by Lavern 
english
The groom's family presented this letter to the bride's family. is presented an action( physical or mental) verb also It formally accepted the bride into the groom's family. is accepted (physical or mental) action verb?? I think presented is physical and
asked by jill 
fsu
The individual amounts in the Accounts Receivable Debit column of a sales journal should be posted to the accounts receivable subsidiary ledger, and the column total should be posted to the Accounts Receivable account in the general ledger.is it true or
asked by rozzell 
physics
a disk has a mass of 2kg and a length of 2 meters and it oscillates about an axis that is 1.5 meters from the center of the disk. It is initially displaced at an angular displacement of 0.2 radians and released. A) What is the equation of motion? B)What is
asked by seth 
English
Could you please check these sentences, too? I tried to rephrase the first lines again. 1) Hamlet wonders whether it is better (for him) to endure the assaults of shameless fortune ("the slings and arrows of an outrageous fortune") or to fight against his
asked by Henry1 
physics
If the brisk walk were done at 4.0mi/h how far would the student have to walk to burn pound of fat
asked by bently 
physics
A 83kg worker clings to a lightweight rope going over a lightweight, lowfriction pulley. The other end of the rope is connected to a 66kg barrel of bricks. If the worker is initially at rest 16 m above the ground, how fast will he or she be moving when
asked by matt 
trigonometry
tanθ= 2sqrt10/3 and π/2
asked by Yulieth 
optimization calculus
A piece of wire 25 m long is cut into two pieces. One piece is bent into a square and the other is bent into a circle. (a) How much of the wire should go to the square to maximize the total area enclosed by both figures? (b) how much of the wire should go
asked by A 
chemistry
20g of nitrogen gas and 10g of helium gas are placed together in a 5L container at 25C . Calculate the partial pressure of each gas and the total pressure of the gas mixture.
asked by NONO 
chemistry
A 10.6 liter at 25 C and 3.21 atm inside pressure became 12.8 liters at 221 C after driving in summer. What is the pressure in the hot tire?
asked by NONO 
economics
when you are given the units of resource, total product, and marginal product, what do you need to find to determine how many resources the firm will employ, what the MRP would be etc...
asked by Brianna 
chemistry
what is oxidation state of NO2
asked by Anonymous 
chemistry
Explain the reaction mechanism of the following reaction by showing the types of bond splitting and atom rearrangements. C + O2 = CO2
asked by Elijah Bowie 
math  please help!!
If rhys is late for his finite mathematics class, and the probability that he is on time is 3/4. however if he is on time, he is liable to be less concerned about punctuality for the next class and his probability being on time drops to 1/2. rhy is on time
asked by linda 
math problem
Please solve using the addition principle please do check x + 3/13 = 5/13
asked by Avery 
The Calvin Cycle
How many molecules of CO2 will the calvin cycle consume in generating 2 molecules of fructose 6phosphate? How many molecules of ATP will the calvin cycle consume in generating 2 molecules of fructose 6phosphate? How many molecules of NADH will the calvin
asked by Jenna 
D.E
A particle moves on the xaxis with an acceleration, 246msta. Find the position and velocity of the particle at 3t, if the particle is at origin and has a velocity of 10ms when 0t by using either the method of undetermined
asked by Farah 
statistics
Group the largest data set and find mean, median, mode, variance, standard deviation, 15th, 45th and 80th percentiles of the grouped data. Then find the same sample statistics using the ungrouped data. Is there any difference? Comment.
asked by metu 
calculus
Evaluate the integral of xe^2x(dx) A. (1/6)(x^2)(e^3x)+C B. (1/2)(xe^2x)(1/2)(e^2x)+C C. (1/2)(xe^2x)(1/4)(e^2x)+C D. (1/2)(x^2)(1/8)(e^4x)+C
asked by Tracy 
Chemistry
Why water is a weak electrolyte?
asked by Dewa 
science(Ms.Sue)
What term almost always describes top consumers? A)herbivores B)omnivores C)carnivores D)producers My answer is B am i right,if not please explain?
asked by lidia 
math
if cosθ=2/3 and tanθ
asked by Yulieth 
speech
This might be a hard question to answer but I need an example for my speech for speech class. My speech is a persuasive on why you should foster an animal. I am talking about the benfits and how learning responsibility is a benefit. I know there are
asked by rachel 
science(Ms.Sue)
What does a maple tree do for a community? A)it creates energy B)it creates food C)it looks nice D)it stores water My answer is b,am i right?
asked by lidia 
Chemistry
Explain the reaction mechanism of the following reaction by showing the types of bond splitting and atom rearrangements. C + O2 = CO2
asked by Elijah Bowie 
Physics
The maximum speed of a 3.1{\rm kg} mass attached to a spring is 0.70 m/s, and the maximum force exerted on the mass is 12 N. What is the amplitude of motion for this mass? Express your answer using two significant figures.
asked by Byron 
ChemRepost
it wouldn't let me post after putting spaces in the url and everything, so i just copied and pasted the q instead :P sorry for all the messyness. i'll see if i can delete q's, in the mean time you can maybe look at this please? Initial rate of rxn of
asked by Matt 
To Sra
Thank You Sra!!! :) PARP stand for parents as reading partners it was a reading contest I join 3 contests this year reflections, battle of the books @ my school, and theis gift card contest. I working really hard :) i was chosen to be in ladies club we did
asked by Laruen 
Chemistry
I just wanted to clarify that although Cody did respond to my question, we were still unable to determine the solution. I will post a link to the question in a minute. (i noticed you replied to the other posts a bit ago, but i hope im not being too abrupt.
asked by Matt 
physics
Calculate the tidal force experienced by Io. How does it compare to the tidal force experienced by the Moon due to the Earth? What would the EarthMoon distance (i.e., distance between their centres) need to be in order for the Moon to experience similar
asked by roach 
Calculus
If f(x) = x ln(1+x) estimate the value of ln (2.1) given that ln2 = 0.6931.
asked by Helga 
physics
A 450 kg spherical mass is placed 4.40 meters away from a 550 kg spherical mass. What is the magnitude of the gravitational field midway between the two? ...... Im not quite sure how to do this any help would be appreciated.
asked by Chris 
Geometry
the measure of each exterior angle is 45. how many sides does the polygon have?
asked by Allison 
physics
a football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball (about 0.18 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?
asked by marissa 
Algebra
Could anyone help me write a system of equations with this? Thanks  A theater group sold a total of 440 tickets for $3940. Each regular ticket costs $5, each premium ticket costs $15, and each elite ticket cost $25. The number of regular tickets was three
asked by Shadow 
math
Please divide if possible 110/11
asked by Johnson 
math problem
Can you determine which number corresponds to the situation THe record high temperature for a date is 95.6 degree above zero What is the corresponding number for this sentence.
asked by Avery 
chemistry
how can you tell if a combination in a mixture forms a precipatate or not?How can you tell from the sollubility table?
asked by JJ 
history
where can i get facts about winchester cathedral
asked by bob 
English topic sentence please pick one
What does it mean to untie the knot of renunciation? It means all the promises made to one another by a couple in a marriage ceremony have been broken which ends with a divorce. or What does it mean to untie the knot of renunciation? It means getting a
asked by ME 
math
given sinθ=5/13 and π
asked by Yulieth 
physics
The maximum speed of a 3.7{\rm kg} mass attached to a spring is 0.66 m/s, and the maximum force exerted on the mass is 11 N. What is the amplitude of motion for this mass? What is the force constant of the spring? What is the frequency of this system?
asked by shaz 
geometry
find how much air is in a beach ball if the inside radius of the ball is 7 inches used pi=7 over 22 and round to the nearest hundredth of an inch.
asked by Anonymous 
History
can someone help me make a really short, brief history of Chad,Africa?
asked by Rebecca 
chemistry
Balancing redox equations reactants: Cu, NO3
asked by Anonymous 
Math
An estate was divided among three heirs. After Andrea received 50% of the estate, her mother received 50% of what remained, leaving $20,000 for Andreas uncle. What was the total value of the estate?
asked by Vic 
chemistry
Exactly define the number of hydrogen and hydroxide ions at pH 6. What about pH 8?
asked by john 
math
cos 23pi/12 i tried doing it and i got 0.994.. is that right? can someone explain how to do this to me? thanks!
asked by unknown 
NJHS
what do you do at the National Junior Honor Society Induction Ceremony?
asked by Laruen 
English
I left out a few more sentences. I really hope you can check them,too. 1) Hamlet considers the reasons which may lead us to take our own life. He thinks of the punishments and insults which people who are good and quiet take from those who are unworthy. 2)
asked by Henry2 
English
I really need you to consider this rephrase of Hamlet's monologue "To Be or not To Be" and help me check it. I added a few more things and I'd like know your opinion. Thank you. 1)Hamlet wonders if it is better to bear the slings and arrows of outragous
asked by Henry2 
Finance
Problem 1: You are considering hiring one of two portfolios managers who have actively managed funds last year. Both of the funds these managers have managed are “value” funds that try to enhance the returns relative to the standard value strategy by
asked by Anonymous 
maths
how do you simplify surds?
asked by lissa 
Chemistry
Taking into account the "Second Law of thermodynaics", what is the maximum percentage of heat at 700 C that can be converted into electricity if the waste heat was produced as steam at 100 C?
asked by Devin Boutte 
accounting
Components of CostVolumeProfit Analysis 1.Explain the components of costvolumeprofit analysis. 2.What does each of the components mean? 3.What happens to contribution margin per unit when unit selling prices increase? Illustrate your explanation with
asked by Anonymous 
socials
the other poster is Careless talk brings tragedy in wartime i search google and it also come up message i think message is think before you speak because passing on message turn small thing to big thing images used to convey message soldiers, spy, train
asked by Mohammad 
calculus
integrate (54x^3+2x^6)/(x^6) Just not getting it.
asked by Cindy 
college Algebra
so i am suppose to to find the max value attained by… g(x) = 3x2  24x  18. but my teacher said "There is a difference between determining the maximum value and naming the location of the maximum value." what does that mean??
asked by Brianna 
Math
How do I estimate these? 1. 7/8 + 3 1/4 2. 5 1/9  2/3 3. 9 5/6 divided 2 1/8 4. 6 divided 1/2
asked by Brad 
Algebra 2
Dividing: Write the expression as a complex number in standard form 1) 2+5i/5+2i 2) 6i√2/6+i√2 for the first one I solved it and I only got this far: 10+21i10i^2/254i^2
asked by Linda 
HIstory
How have the lingering influences of the New Left and the cultural radicalism of the 1960s affected both liberal and conservative politics?
asked by Alex 
PreCalculus
It may look lame but I can't work out how to solve (9) sqrt(4x^2) = 4x + 5sqrt2. I need some guidance, please.
asked by Helga 
English
Which new ideas on the relationship between Wilde’s life and art does the first half of De Profundis provide
asked by Regina 
English
I tried to clarify the last concept. Thank you for helping me. 1) The image is of the face which loses its healthy red colour and becomes pale when the body is sick. The kind of thought which prevents men from committing suicide is not far from a moral
asked by Henry2 
physics
A 90kg gorilla slides down a jungle vine
asked by Gayanne 
Chemistry
Taking into account the "Second Law of thermodynaics", what is the maximum percentage of heat at 700 C that can be converted into electricity if the waste heat was produced as steam at 100 C?
asked by Devin Boutte 
geometry
ABC is congruent to DEF AB = 11, BC = 14, CA = 20, FD = 4x  12 Find x
asked by T 
diff eqn.
y(t) = 0.2451 cos 4t + 0.9804 sin 4t + e^(3t ) (A cos〖t+B〗 sin〖t)〗 y'(t) = ?
asked by Farah 
polution
Water Pollution
asked by paulina 
physics
a gate 6m wide requires a force of 5.2 kg.wt. applied at the end to open it. what force would have to be applied (A) at the middle and (B) at 1.5m from the hinges, to open it?
asked by ana 
Science
When is it appropriate to use groundwater at a rate faster than the rate of recharge? Explain. I'm doing an assignment which has this as one of the questions I have to answer. I've been searching online, research articles as well as goggle searches, but so
asked by Amy 
Math
4/3 x (4/3) If you multiply what would it be please show steps and answer
asked by Johnson 
math
please simplify 16/9
asked by Johnson 
Linear Algebra
Find the basis for the following vector space. Please state the dimension of the vector space. S consists of all x in R3 such that x is orthogonal to n=(2,3,2)
asked by Simon 
trigonometry
given tanθ= 2√10/3 and π/2
asked by Yulieth 
Math
1. 2 1/3 x 3 1/2 = 2. 4 2/3 divided 7 =
asked by Brad 
Physics
A brass trombone
asked by Nan 
English
Thank you very much. I still need your help to revise a few more lines. 1) A quietus was a statement which released an accountant from his responsibility for the accounts he was working on; the full Latin phrase was quietus est, “it is at peace”, i.e.
asked by Henry2 
ALGEBRA
What is the 50th consecutive even number?
asked by MONICA 
finiance
WM3 is a company who is looking to expand. There is a potential deal with a furniture company but MW3 is not sure if they should take this deal. The furniture company is offering a 4 year contract for 100,000 units per year at a fixed price of $55.50 per
asked by Ky 
Physics
If you pull a 10kilogram cart along the ground for 5 meters using 2 Newtons of force,how high will it go before it stops?
asked by Anonymous 
Calculus
I need help finding the derivative of this function: f(x)=(X^2+2)^4/5 Thanks in advance! Any help would be greatly appreciated!
asked by Confused 
chem
what are the strong acids and what is a good way to remember them what are the strong bases and what is a good way to remember them I think but am not sure: are the weak acids and bases everything else?
asked by anonymous 
physics
I just need a around about answer if a 250 pund man is travling 8mph and hits his face into a stationary objest around how many pounds of pressure is he getting hit with think of it like getting punched in the face
asked by Anonymous 
Chemistry
how many moles of lead (II) sulfate will be produced when 500 grams of magnesium sulfate is allowedto react with lead (II) nitrate?
asked by Rachel 
English
I urgently need you to revise these sentences, too. I made some variations, but I have to be sure that everything is OK. I don't know if sentence 1 can make sense. 1) Two philosophical positions, which remain unreconciled in Hamlet's monologue, are
asked by Henry1 
English
Use a telescope to see into the sky
asked by Anonymous 
English
Here is the second part. Thank you very much. 1) If death,unlike sleep, is an end in itself, then it is desirable and therefore preferable to life's suffering. Once we have 2) As in sleep there is the possibility of dreaming, Hamlet wonders if there will
asked by Henry2 
science
What type of environments do leopards need to live in?
asked by Thalia 
Chemistry
how much sodium is in 1.80 grams of Na3PO4
asked by Anonymous 
English
I checked the rephrase as you recommended to me. Thanjk you 1)Hamlet wonders whether it is better to bear the nasty things which luck throws his (our) way or to make a stand against his mass of troubles. 2) He can oppose his troubles either by committing
asked by Henry1 
College Algebra
(ex)x·e4x + 4 = 1… so i need to solve for x…. how the hell do I do that???
asked by Brianna 
College Algebra
so i am suppose to to find the max value attained by… g(x) = 3x2  24x  18. but my teacher said "There is a difference between determining the maximum value and naming the location of the maximum value." what does that mean??
asked by Brianna 
College Algebra..LOG
log4(little four) (40  3x) = 0 now i need to solve for x...
asked by Brianna 
geometry
find the values of the variables and the measures of the triangles:x+(x+2)+(6x+10)
asked by ynddy 
Math problem
evaluate a+b/10 for a = 68 and b =12 a+b/10 =
asked by Avery 
PreCalculus
I'm having a had time with this problem. Could you please help with step by step resolution? e^x / e^1 + 3 dx Thank you..
asked by Lee 
socials
what happened after the cypress hill massacre?? The white invaders formed the Northwest Mounted Police ???? what else happened?
asked by kim 
College Algebra..LOG
log4(little four) (40  3x) = 0 now i need to solve for x...
asked by Brianna 
government
why was amendment 17 significant and how were the state governments represented before this amendment?
asked by Rachel