Questions Asked on
January 24, 2010

physics
a 2000 kg car rounds a circular turn of radius 20.0 meters. if the road is flat and the coefficient of static friction between the tires and the road is .70, how fast can the car go without skidding
asked by mallory!!!!!!!!!!!! 
physics!
tarzan tries to cross a river by swinging from one bank to the other on a vine that is 10.0 meters long. his speed at the bottom of the swimg is 8.0 meters/second. Tarzan does not know that the vine has a breaking strnght of 1000 newtons. what is the
asked by hannah! 
chemistry
how many grams of HNO3 can be produced if 225 grams of NO2 is mixed with 55.2 g of H2O? 3NO2 + H2O=2HNO3 + NO
asked by jenny 
math
A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work for the machine to work properly. Assume the probability of one part working does not depend on the functionality of any of the other parts. Also assume
asked by April 
college chemistry
Given that the heat of fusion of water is 6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 kJ/mol*K and that the heat capacity of H2O(s) is 37.7 kJ/mol*K, calculate the heat of fusion of water at 11 K.
asked by i'm stuck 
Physics
Estimate the terminal speed of a wooden sphere (density 0.770 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.) (b) From what height would a freely falling object reach this speed in
asked by ucieng 
physics
Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 13 ft when leaving the ground at an angle of 40.4°. With what speed, in SI units, does it
asked by Michelle 
chemistry
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.8 of water upon warming from 25degree C to 50degree C . Assume that the water is initially saturated with nitrogen and
asked by bf 
physics
A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 40.0° with the vertical. Find the velocity of the rain
asked by Michelle 
Organic chemistry
Is mnitroaniline soluble in water, 1.0M NaOH, 1.0M HCl?
asked by Kevin 
Organic chemistry
is benzoic acid soluble in water, 1.0M NaOH, 1.0M HCl?
asked by Kevin 
chemistry
Celeste's diet restricts her intake of protein to 24 g per day. If she eats 1.2oz of protein, has she exceeded her protein limit for the day?
asked by robynn 
Physics
Estimate the terminal speed of a wooden sphere (density 0.770 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.) (b) From what height would a freely falling object reach this speed in
asked by ucieng 
4 grade
A snail climbs up a wall 20 feet high. Each day the snail climbs 5 feet, but each night it slips backwards 4 feet. How many days will it take for the snail to get to the top of the wall?
asked by Anonymous 
Physics
The following values are the only allowable energy levels of a hypothetical oneelectron atom: E6 = =2 X 10^19 J E5 = 7 X 10^19 J E4 = 11 X 10^19 J E3 = 15 X 10^19 J E2 = 17 X 10^19 J E1 = 20 X 10^19 J A) If the electron were in the n = 3 level,
asked by Vea 
Vibration and Waves
1. A girl on a playground swing makes a complete toandfro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2. (1 second) 3. (2 seconds)
asked by Sam 
physics
An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 15.0 m if her initial speed is 2.40 m/s. What is the freefall acceleration on the planet?
asked by Michelle 
Physics
A 10,000 kg railroad car traveling at a speed of 24.0 m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward?
asked by Jeremy 
physics
Mayan kings and many school sports teams are named for the puma, cougar, or mountain lion Felis concolor, the best jumper among animals. It can jump to a height of 13 ft when leaving the ground at an angle of 40.4°. With what speed, in SI units, does it
asked by Michelle 
communication
As such, each department has a different perspective on how to get things done, and what to get done. they have developed, hopefully, well defined policies procedures, as well as specific processes in order to ensure that their work gets completed in an
asked by Anonymous 
Trigonometry
A little boy is flying a kite. The string of the kite makes an angle of 30 dgrees with the ground. If the height of the kite is h equals 15 m, find the length (in meters)of the string that the boy has used.
asked by Rob 
Statistics
70% of the student body of a very large postscondary institution is female. In a random sample of 12 students, what is the probability that: a) at most half will be females b) more than 7 will be females c) fewer than 3 will be males I used the Table of
asked by Sunny 
Physics
A 10,000 kg railroad car traveling at a speed of 24.0 m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward?
asked by Jeremy 
Calculus
Prove that the average of LRAM and RRAM is equal to TAM.
asked by Daniel 
Chemistry
Select all cases in which the units comprising the solid are best classified as molecules. CrSe C2H2 CS2 C2H4 Cs2S Cl2O7 None Help please? I think they're all molecules
asked by Angel 
Physics
When a solid wheel rotates about a fixed axis, do all of the points of the wheel have the same tangential speed?
asked by courtney!! 
PHYSICSradiation
Four billion years ago the Sun’s radiative output was 30% less than it is today. (i) If we assume the radius of the sun is the same, and that the Earth’s atmosphere was the same as it is now (that is, the atmosphere absorbs 10% of the incoming solar
asked by RANI 
chemistry
A 1.10 sample contains only glucose and sucrose . When the sample is dissolved in water to a total solution volume of 25.0 , the osmotic pressure of the solution is 3.78 at 298 .
asked by bf 
physics
In the Millikan oil drop experiment, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on
asked by James 
chemistry
If 4.36g of a hydrate of the salt baCl2 is heated and in the process losses 0.6431g of mass, show all your work to calculate the amount of water X in the hydrate, BaCl2.XH2O
asked by ujay 
Math 156
A child's dose of medicine is 16 of a premeasured dose cup. If the bottle of medicine is the size of 9 dose cups, how many children's doses are there in the bottle?
asked by Janey 
physics
Correct the following statement: The racing car rounds the turn at a constant velocity of 145 km/hr.
asked by mimi 
physics
the force exerted by a spring increases as the spring stretches. imagine that you attach a heavy object to one end of a spring and then, while holding the springs other end, whirl the spring and object in a horizontal circle. does the spring stretch.
asked by billie 
English
“Harlem” What happens to a dream deferred? Does it dry up like a raisin in the sun? Or fester like a sore— And then run? Does it stink like rotten meat? Or crust and sugar over— like a syrupy sweet? Maybe it just sags like a heavy load. Or does it
asked by Candace 
chemistry
if 4.36g of a hydrate of the salt baCl2 is heated and in the process losses 0.6431g of mass, show all your work to calculate the amount of water X in the hydrate, BaCl2.XH2O
asked by ujay 
12th grade economics
how might opportunity cost help to explain tha pattern of international trade?
asked by muz 
eng gr 9
hi I have an exam tomorrow in english and our teacher told us the exam is writing an essay on either curious case of the dog in the night time or midsummer's night dream. I have studied for both the play and the novel the themes, character analysis, way to
asked by Anonymous 
check and correct public speaking
1. (TCO5) According to the text, nonverbal communication is: My Answer D continuous, emotional, ambiguous and both intentional and unintentional ambiguous, multichanneled, intentional and both continuous and sporadic continuous, multifaceted, emotional
asked by Bryan 
PHYSICS!!!
iN THE EQUATION FOR THE MAGNITUDE OF TORQUE, WHAT DOES THE QUANTITY d sin radians represent.
asked by Mackenzie!!!!!!!!! 
Science
Engineering Science Project ideas and some thing cool interesting and new not that has been popular as a science project!!!!!!!!!!!!! Plz!!!!!!!!!!!!!!
asked by Edward 
chem
Species of arsenic found in kriking water include (AsO3)3, (CH3)2(AsO2)2, (CH3)AsO3 2, and (AsO4)3. Pure water containing no arsenic was spiked with 0.40microgram arsenate/L. Seven replicate determinations gave 0.39, 0.40, 0.38, 0.41, 0.36, 0.35 and
asked by bun 
PHYSICS
Four billion years ago the Sun’s radiative output was 30% less than it is today. (i) If we assume the radius of the sun is the same, and that the Earth’s atmosphere was the same as it is now (that is, the atmosphere absorbs 10% of the incoming solar
asked by Sunshin3 
physics
a perpetual motion machine is a machine that, when set in motion, will never come to a halt. why is such a machine not possible?
asked by bobbyyyyyyyyyyyyyyyyyy 
marketing
There are four Ps in marketing. These are Price, Product, Promotion, and Place. Choose a product or service with which you are familiar. Describe the product or service. Then, in your own words, describe the 4P decisions which would be important when
asked by Anonymous 
chem
why do elements in the same family generally have similar properties?
asked by samuel 
Geology
Can someone help me with these questions I have some material for them but not enough. • First Compare and contrast the geological features of a desert landscape and glacial landscape. Describe at least one process that creates the resulting landforms
asked by Jen 
chemistry
A 1.10g sample contains only glucose and sucrose . When the sample is dissolved in water to a total solution volume of 25.0ML , the osmotic pressure of the solution is 3.78atm at 298K a.What is the percent by mass of glucose in the sample? b.What is the
asked by bf 
Physics
The mass of a car is 2400 kg. the constant power supplied by the engine is 60 kW and the car starts from rest. What is the speed of the car at the end of 2 seconds?
asked by Leah 
9th grade
Why did many people in mecca reject muhammad's ideas at first?
asked by zainab 
Vibration and Wave Fundamentals
Vibration and Wave Fundamentals 1. A machine gun fires 10 rounds per second. The speed of the bullets is 300 m/s. (A.) What is the distance in the air between the flying bullets? ____ ANSWER=30 (B.)What happens to the distance between the bullets if the
asked by Sam 
college chemistry
An aspirin tablet weighing 0.502 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of
asked by Alexander 
algebra
Four pears and two apples cost $1.96. Three apples and three pears cost $2.10. Find the cost of 1 apple and 1 pear.
asked by brooke 
Algebra 2
a computer manufacturer needs to change the dimensions of its foam packaging for a new model of computer. the width of the original piece is three times the height, and he length is equal to the height squared. The volume of the new piece can be
asked by Jane 
Biology
Need help with these two: 26. Why do plant cells contain both choroplasts and mitochondria? a. in the light, plants are photosynthetic autotrophs. In the dark, they are heterotrophs. b. if plants can't produce enough ATP to make sugars during
asked by mysterychicken 
5th Grade fractions
Walt has a piece of rope which is 10 1/3 feet long. He has to cut it into 4 equal pieces. How long will each piece be? I took 10 1/3 divided by 4 which is 2.58333. How can I explain this to my 5th grader in fractions?
asked by Meghan 
Physics E&M
An electron is released from rest on the axis of a uniform positively charged ring, 0.100 m from the ring's center. If the linear charge density of the ring is +0.149 µC/m and the radius of the ring is 0.200 m, how fast will the electron be moving when it
asked by Alex 
Trig
2cos^2BetaCosbeta=0 (find all solutions for the equation in the interval 0, 2 pi). I have no idea how to go about doing this. Do you isolate the beta on one side? Would you be able to show me how and I'll solve for you to check?
asked by Janie 
math
A police department reports that the probabilities that 0,1,2, and 3 burglaries will be reported in a given day are .51, .44, .04, and .01, respectively. Find the expected number of burglaries reported in a given day. How do I figure this out? I simply do
asked by April 
social studies
Who represented Linda Brown in the court case Brown vs. Board of Education of Topeka?
asked by Ashley 
math
solve. x(1 +2x) = (2x  1)(x  2)
asked by LO 
3rd grade
the best estimate to measure a desk. i put ruler and meter
asked by aliyah 
physics
how does the gravitational force exerted by earth on the sun compare with the gravitational force exerted by sun on the earth? and would you expect tides to be higher at the equator or at the north pole? why?
asked by amar 
physics calc based
In the product F = qB (vectors), take q = 2 (neglecting the units of charge, q) and v = 2.0 i + 4.0 j + 6.0 k and F = 4.0 i + (20 j) + 12 k . What then is B in unitvector notation if Bx=By ?
asked by hannah 
8TH GRADE MATH
thank you so much, ms sue! may i ask another question? If 6 oz cost 3.25 20 oz cost 5.59 36 cost 6.59 how much would 12oz, 26 oz, 48 oz cost? Thank you so much! maribeth
asked by maribeth 
biochem
When making Aspirin, I know that sulfuric acid is used as a catalyst. But i was wondering 1.) if the reaction would happen without the cataylst and 2.) can other substances be used as a cataylst in this reaction?
asked by chrissy 
chemistry
im doing a lab on le chatelier's priciple and the question is 'describe what you observe when the saturated solution of sodium chloride was stressed by the addition of CL ions, write the ionic equation and explain how le chatelier's principle is applied
asked by Anonymous 
Math
Express the given quantity in terms of the indicated variable. The interest obtained after one year on an investment at 2 1/2% simple interest per year; x = number of dollars invested
asked by Sara 
pure maths
use trapezium rule with 3 intervals to estimate the value of intergrating x=0 and x=3 squarerooting 1+xsquared
asked by marie 
physics
A fly lands on one wall of a room. The lower lefthand corner of the wall is selected as the origin of a twodimensional Cartesian coordinate system. The fly is located at the ...
asked by Anonymous 
social studies
How does italy's geographical features affect its economy?
asked by amy 
Physics
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that slopes upward at a 12° angle with the horizontal. As you face the window (0.86 m high, 2.1 m wide) in your compartment, the
asked by Mike 
science
Expain why,it is easier to break an egg by stricking at the flat side, other than at the pointed edges.
asked by caleb 
pre calculus
Perform the division and write your answer in form. g(x)+r(x)/ d(x) (4x^31)/ (x4)
asked by indigo 
instrument
I have absolutely no idea about this, but I am doing a crossword puzzle for music, and I don't know what #1 across is. The clue it gives you is, "music sounds produced by the use of tools," and the word or words is 19 letters long. Help please! Due
asked by Ash 
Trigonometry
A crow is on the ground 80 feet from the base of a 45 foot tall tree. It then flies straight throught the air to the top of the tree. What is the angle of the crow's flight path relative to the ground ?
asked by Drake 
algebra
A 30ft. cable is cut into 2 pieces. One piece is twice as long as the other piece. Find th length of each piece of the cable.
asked by brooke 
algebra
Translate to an inequality. The average speed, s, was between 100 and 110 mph. Translation: 100_ s _ 110
asked by Sharone 
college physics
The electric field near the surface of a uniformly charged conducting plane can be determined by Gauss's law. If the plane is a square of sides 11.5 cm and carries a charge of 22.0 nC (that's nanocoulombs), what is the magnitude of the electric field near
asked by Aly 
College Physics
Now we also know that the charge on a pair of parallel plates is proportional to the potential difference V, namely q=CV. We also know that the capacitance of two parallel plates is given by C=ε0A/d, where ε0=8.85×1012 is the permittivity of free space
asked by Robert 
Physics: fictitious forces
A plumb bob does not hang exactly along a line directed to the center of the Earth's rotation. How much does the plumb bob deviate from a radial line at 39.0° north latitude? Assume that the Earth is spherical. This was in my textbook with an angle of 35
asked by ucieng 
chemistry
Which of the following minor products could not arise from the halogenation reaction below? a)2,5 dimethylhexane b)2 bromo2 methyl propane c)1,3 dibromo, 2 methyl propane d) 2,4 dimethylhexane e)2,2,5 trimethyl pentane plz can someone help me...i kno its
asked by rafael 
Trig
Let O represent the origin and P be the point (9, 4). Find the positive angle (counterclock wise direction)that the line segment OP makes with the positive xaxis. the answer is 5.86 radians but i keep getting 0.418 radian. please help and show work
asked by Drew 
physicsss
Phobos is the larger and closer of Mars’s two moons. It has no atmosphere, a mean radius of 11 km, an albedo of 0.07, and an emissivity of 1.0. (i) Assuming that the radiative temperature of Phobos is 222 K and that it is spherical, what is its mean
asked by physics help! 
algebra
the width of a rectangle is fixed 29 cm. what lengths will the perimeter greater than 82 cm. the length must be greater than blank cm.
asked by at 
Physics
A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to the amount of work done
asked by Anonymous 
Finite
Assume that the producer has 8 skits and 5 commercials available. In how many ways can the producer create a television show?
asked by Megan 
grade 11 physics
PLEASE HELP  NOBODY ANSWERED MY QUESTION YESTERDAY. sue drives her 1452 kg car along a straight road at a constant velocity of 30 m/s [E]. Ger brakes suddently give out. she puts the car in neutral and lets it coast for 25 seconds. The air drag
asked by Laura 
math
Solve. x+1/3 + x+2/7 =2
asked by Deedee 
7th grade science
1) what makes bones hard? 2) what is the hard,strong layer of bone called? 3) what is the smooth flexable layer of tissue covering the ends of bones? 4) what kind of joints are found in the skull and pelvis? 5) what type of muscles make up the majority of
asked by mary 
Trigonometry
A pole with a height of 60 ft. has a shadow of length of 34.64 ft at a particular instant of time. Find the angle of elevation of the sun at this point of time.
asked by Rob 
algebra
tains A and train B are travling in the same dicrtion on a parral track train A is traving 60 mph and train B is traviling 70 mph train A passes a staion at 11.15 am and train B passes the same station at 11.45 am at what time will train B catch up to
asked by me 
9th grade
How do you factor this expression? 10x+15
asked by Daniel 
algebra
If Kurt were 10 years old, he would be twise as old as his sister, and their combine ages would be 36. How old are Kurt and his sister?
asked by brooke 
math
How do I find a variance for a set of numbers {1,16,8,17,12} I got that variance34.2, but I'm unsure. Any help? Thanks.
asked by April 
algebra
help please im on my final exam for algebra and i need to pass this is the second time taking it. media services charges $20 for a phone and $30 a month for itd economy plan. the equation c=30t+20 describes the total cost c, of operating a media service
asked by at 
French/Sra
J'aime faire du shopping au centre commercial et aux grands magasins. Mes amis uniquement font du shopping au centre commercial. J'aime porter des tshirts longs, jeans, pantalons, pulls, et ce que je suis comfortable dans l'école. Les vêtements que
asked by Anna 
Algebra 209
the perimeter of rectangle back yard is 6x+6 yards if the width is x yards find a binominal that represents the length.
asked by Tanya 
Public Speaking
what is an example for negative interpersonal communication skill working?
asked by Bryan 
algebra
x=2 type the integer of a fraction if there is one
asked by me 
math
how do I solve 1/3 x = 5/12
asked by marc 
PHYSICS
ANOTHER QUICKQUESTION ABOUT THIS ONE, PLEASE HELP pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah decideds
asked by SAMIR 
math
find the midrange of these: 1.5, 2.5, 3.0, 1.0, 1.4, 3.5, 1.8, 1.8, 3.3, 2.2, 2.8, 1.8 I thought you take the highest  the lowest and then divide by 2, but the answer I get is not one of the choices. Show me the formuula please? Thanks!
asked by Sam 
English I
Respond to the question presented by the poet. "..if there were a fire in a museum which would you save, a Rembrandt painting or an old woman who hadn't many years left anyhow?" Explain your answer. "Ethics" In ethics class so many years ago our teacher
asked by Candace 
grade 11 physics
Cathy takes the bus home from work. In her hand she holds a 2 kg cake box, tied together with a string. As she ascends the steps into the bus,the box accelerates upward at a rate of 2.5m/s^2. what is the force exerted on the string? Fg=ma =2*9.8 =19.6N
asked by Sarah N H 
5th grade
What is each branch of government responsible for?
asked by Emmy 
algebra
solve by the elimination method 3x+4y=3 6x+8y=6 help please
asked by a 
Conflict Management Communications
Think of a recent conflict, and now create a metaphor or figure of speech (simile) that summarizes the experience of it. What aspects of the experience does the metaphor emphasize? Does it focus on constructive or destructive aspects of the event or
asked by Crystal 
math
solve. 3/x  1/3 = 1/6
asked by judith 
algebra
Translate to an inequality. The average speed, s, was between 100 and 110 mph. Translation: 100_ s _ 110
asked by Sharone 
algebra 1
Solve each linear system by substitution method. x+2y=7 2x+4y=8 I'm getting stuck. Could some one explain the work out process and what the outcome means?
asked by Chica 
Stats
The distribution of SAT verbal scores of University X's incoming freshman class (N=950) has a mean of 475. What is the value for the sum of deviation scores from the mean of this distribution?
asked by Jill 
algebra
0.4x+4
asked by help 
college physics
Let's say that you find a slope of 6.671×1014 for square plates of width 11.5 cm. What do you get for the value of the permittivity of free space?
asked by Alexandra 
physics
As a result of doing work a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and delivers 900 J of energy in 14 seconds to some object. what is the effiecency of this machine?
asked by CB 
grammar
They have endeared me by just being themselves and helping me learn to appreciate the imagination, creativity, and personality inside of them.
asked by alisa 
physics
A ball is kicked at ground level with a speed of 15.0 m/s at an angle of 35.0° to the horizontal. How much later does it hit the ground?
asked by Anonymous 
French/Sra
J'aime faire du shopping au centre commercial et aux grands magasins. Mes amis uniquement font du shopping au centre commercial. J'aime porter des tshirts longs, jeans, pantalons, pulls, et ce que je suis comfortable dans l'école. Les vêtements que
asked by Anna 
spelling
Hi my name is Lily. This is the first time I am oing o be in a spelling bee. Our class is practicing my teacher will choose three students I really want to be one of them can you please help me so I can have a good peperation? Thank You in advance
asked by Lilly 
spanish
what does la piz mean?
asked by carnell 
Literature
If in Shakespeare's time, the women roles were played by trained boy actors, how did they do romantic scenes? For example, the balcony scene in Romeo and Juliet or when they had to kiss? Thanks MC
asked by mysterychicken 
Math
in a family with two children, what are the probabilities of the following outcomes, assuming that the birth of boys and girls is equally likely?
asked by Judy 
English
I am asked to describe the "syntax" of a book I am reading. I have looked up several definitions of the word and still do not understand what it means.
asked by Peter 
chemistry
what is the difference between electron affinity and ionization energy?
asked by Jeremy 
CHEM
rank the fallowing elements by increasing atomic radius: carbon, aluminum, oxygen, potassium. please help!
asked by Jay 
algebra
help please the equation of y= 1777x+27,153 can be used to predict the number yof gun deaths in the united states after 2000 that is x=0 corresponds is x=2000x=3 x=correspopnds to 2003 x=6 corresponds to 2003 abd so on predict the number of gun deaths in
asked by at 
algebra
8x(4x+6)=2 the solution is x=
asked by help 
organic chemistry
Which of the following minor products could not arise from the halogenation reaction below? isobutane + Br2 > 1bromo2methyl propane + HBr + minor products a)2,5 dimethylhexane b)2 bromo2 methyl propane c)1,3 dibromo, 2 methyl propane d) 2,4
asked by Bengali 
Chemistry
Assuming it behaves as an ideal gas, calculate the temperature of a sample of He whose molecules have an average translational kinetic energy of 1.14E23 kJ/molecule.
asked by Sammy 
Trig
Let O represent the origin and P be the point (9, 4). Find the positive angle (counterclock wise direction)that the line segment OP makes with the positive xaxis. the answer is 5.86 radians but i keep getting 0.418 radian. please help and show work
asked by Drew 
trig
Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= tan²x I still can't figure this out.
asked by Matt 
nutrition
What arguments are being raised by the Grocery Manufacturers of America?
asked by bala 
chemistry
now am stuck on how to find the grams of X+Y=1.10 X for glucose and Y for sucrose i had 3.78=M0.08206*298 3.78/24.45=0.1546M 0.1546*0.025=0.003865 moles. now am stuck. help please
asked by bf 
algebra
a cable is cut into 2 pieces. One piece is twice as long as the other piece. Find the length of each piece of cable
asked by brooke 
PHYSICS
The force applied by the ebrake is F(eb) = m*a(eb) = 8.13*1452 = 12,100 N I didn't get the same answer  I got 11,804.76....please check
asked by SAMIR  ATTN DRWLS QUICK QUESTION 
algebra
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train B is traveling at 88 miles per hour. Train A passes a station at 10:10 P.M. If train B passes the same station at 10:25 P.M. at what
asked by heather 
Early Childhood Growth and Development
What a child repeats a behavior or action simply to observe that action, you would not infer that
asked by Michelle 
Trigonometry
You are stationed at a radar base in Warner Robins, GA and you observe an unidentified flying object at an altitude of 2000 m flying towards your radar base at an angle of 20 degrees. How far away from the radar base is that plane (hypotenuse)?
asked by Jake 
Chemistry
An unknown was prepared with the concentration of 0.000630 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1550.2 M–1. The
asked by Anonymous 
Trigonometry
A=30 degrees, a=9 and b=8. Find the missing sides/angles. I did cos39=x/8 and reduced that to 8cos39=x. I got 6.92. But that's not a valid answer, so I can't go from there. What did I do wrong? Can you show me how to get the other answers as well, please?
asked by Janie 
Algebra
A woman driving a car 14 ft long is passing a truck 30 ft long. The truck is traveling at 50 mi/h. How fast must the woman drive her car so that she can pass the truck completely in 6s?
asked by Sara 
math
Three men walk inside a hotel and decide to stay for the night. They pay the price of $30 by splitting it so they each pay $10. They go up their room, but then the manager realizes that the price that night is $25 dollars so he sends $5 dollars up with the
asked by Amy 
physical geography
i need to know how the elements of the planets,ie... solids, liquids,gasses and factoring in gravity and temperature combine to dictate their position from the sun?
asked by danielle 
PHYSICS
Consider a one layer atmosphere for the planet Venus. 19% of incoming solar radiation is absorbed by the atmosphere. 99% of the outgoing radiation is absorbed by the atmosphere. The incoming radiation, E, as measured by satellite is 615 Wm2. 1) Derive two
asked by Bubbles 
chemistry
Which of the following minor products could not arise from the halogenation reaction below? isobutane + Br2 > 1bromo2methyl propane + HBr + minor products a)2,5 dimethylhexane b)2 bromo2 methyl propane c)1,3 dibromo, 2 methyl propane d) 2,4
asked by rafael 
algebra
the funcation h described by h (x)=2.75+71.48 can be used to predict the height in centimeters of a women whose humerus is x cm long. the predicted height of a women whose 32 cm long is
asked by at 
pre algebra
60 (6/1 +40/8)
asked by aurora 
algebra
a+b for a=34 and b=2 ____ 6 a+b= ______ 6 i don't get this
asked by help 
communication
Class, you have probably heard of 'Group think', in which members of a group basically agree with each other, regardless of how they personally feel about an issue. My question to you is, how does this impact healthcare decision making? Is this something
asked by Anonymous 
algebra
Area of a square find a polynominal A(X) that represents the area of the shaded region u have a square with an arrow pointing left and right at top of the square with x @ the top and a arrow up and down on the right side of the square.The #3 on the right
asked by Tanya 
reiny
How do I find a variance for a set of numbers {1,16,8,17,12} I got that variance34.2, but I'm unsure. Any help? Thanks. math  Reiny, Sunday, January 24, 2010 at 8:16pm look at his page. Reiny  April, Sunday, January 24, 2010 at 8:25pm I looked at that
asked by April 
algebra
1x=5 __ __ 2 6 x=
asked by at 
Trigonometry
Two men on the same side of a tall building notice the angle of elevation to the top of the building to be 30 dgrees and 60 dgrees respectively. If the height of the building is known to be h equals 60 m, find the distance (in meters)btween the 2 men.
asked by Drake 
math
find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons.
asked by chris 
Finance Anaylsis
If a firm is expected to have a profit margin of 8 percent but trades at a price to sales ratio of 25, what inferences would you make?
asked by sam 
geometry
A pyramid must have all equilateral triangles for faces for it to have an axis of symmetry. True or False? I thought maybe true, but I couldn't find it anywhere in my text saying yes or no. Help please?
asked by April 
Physics
This is a pretty simple physics problem, but I do not know how to go about it. How do I: Show that the time required for a projectile to reach its highest point is equal to the time for it to return to its original height?
asked by Jeremy 
algebra
a)using intercepts, graph the three lines 4x + y  8=0, 2x  y  4=0, x + 2y  16 = 0
asked by bob 
algebra
50% of what number is 10?
asked by me 
College Physics
If the uncertanty in the slope is 1.214×1014, is the measured value of ε0 within experimental uncertainty of the accepted value? (Yes or No)
asked by Marie 
English
What are examples of Juxtaposition in Hamelet?
asked by Anonymous 
French/Sra
J'ai besoin de nouvelles chaussures noires. Je vais en avoir besoin pour la gym. J'ai besoin d'une nouvelle teeshirt rouge. J'ai besoin d'un nouveau jean bleu. J'ai besoin des nouvelles sandales blanches. J'ai besoin d'une nouvelle robe noir. I need one
asked by Anna 
arithmetic
Find the sum of the 25th term to 50th term of the arithmetic progression 28,23,18, ...
asked by Eryea 
chem
why does fluorine have a higher ionization energy than iodine?
asked by samuel 
algebra
6x>1/13
asked by a 
calculus
A ship is running at 14 3/4 knots (nautical miles per hour) for 7 1/2 hours. How far does the ship travel?
asked by Jammie 
math/probability
Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12 pounds. Find the probability that a person on this diet loses more than 11 pounds in the first two months.
asked by katie 
math
find the worlds production of nickel in a year when russia and new caledonia together produced 1/3 of it,canada 1/6 of it,and australia 1/9 of it, and the rest of the world 420,000 tons
asked by chris 
Social Studies
What were the 4 dynasties of Ancient China ? Please give me information on each one regarding government, social hierarchy, religion and accomplishments.
asked by Sophia 
chemistry
can u help me on these questions? 1) describe the development of the modern periodic table. include contributions made by Lavoiser, Newlands, Mendeleev, and Mosely. 2) describe the general characteristics of metals, nonmetals, and metalloids. 3) identify
asked by anon 101010 
mathfunctions
Given g(x)=px+q where p and q are constants.If g^2(x)=16x+15 find the possible values of p and q?
asked by Nicholas Lim 
organic chemistry
How would using sodium fluoroacetate instead of sodium chloroacetate affect the reaction? This experiment was to synthesis of plant hormone. and If sodium iodoacetate is used instead of sodium chloroacetate, how will the rate of reaction be affected?
asked by tweety 
English
Thank you for your last suggestions Can you tell me if the following statements are all possible? 1) Antony stirs the crowd against Brutus 2) He turns the crowd against him 3) He urges/incites the crowd to mutiny against him 4) Is this sentence still
asked by Franco 
English
What is the prepositional phrase and what is the word that modifies it in the following sentences? 1. Many stars together create cloudy bands of light. 2. Traveling clouds of dust are called nebulas.
asked by Dilinda 
socials
what were some of the military of the Civil War on americnas.
asked by Anonymous 
Chemistry
Select all cases in which the attraction between units in the solid can best be classified as individual atom induced dipole forces. Y2O3 NH3 H2S ZnBr2 Cu KrF4 None I honestly do not know what to do. I know dipole dipole is positive and negative but this
asked by Anonymous 
business statistics
1.to measure how much the cost of some variable changes over time, you would use? 2.if an index number calculation over 8 years with a base value of 100 gave an index for 1993 of 110, what would be the percentage relative for 1993?
asked by mirjee 
PHYSICS  please check my work
pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah decideds to join the game as well. Now pete pulls on Sarah
asked by SAMIR 
math
how do I solve : 1/2 + 2/x =3/4. thanks for helping!
asked by julia 
French
You decide to enter a contest for a shopping spree at your favourite clothing store. Write a paragraph describing what new clothes you need for summer and why you need them. Include the color of 5 articles of clothing that you would like and what
asked by Anna 
7th grade science
the human skeleton has how many bones?
asked by mary 
college
if you take a $1000.00 and add 6% over 48 years how much would you have
asked by allison 
Physics
Describe the path of a moving body whose acceleration is constant in magnitude at all times and is perpendicular to the velocity.
asked by anne 
eng gr 9
hi can you please tell me adjectives to describe characters from midsummers night dream and from curious incident of the missing dog in the night time
asked by Anonymous 
PHYSICS
CAN SOMEONE PLEASE CHECK THE LAST PART OF THIS QUESTION? pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah
asked by SAMIR 
algebra
collect like terms 12m+5n 10m7n=
asked by me 
algebra
The charge for admission into the concert is $2.75 for adults and $1.50 for childeren. If 589 people paid to get into the concert and $1151 was collected, find the number of adults and the number of childeren who paid for tickets.
asked by brooke 
math
Help! Solve: 1. 3x + 15 = 0 2. 6x + 18 =0 thanks!
asked by Kris 
organic chem!
when trying to purify aspirin, why would i have to add hot water to the crystals that are formed, and then recool the crystals? what does this do to the crystals?
asked by chrissy 
algebra
is there a solution to this problem.. x+3y=5(1) x+43x(2)
asked by at 
math
How do you work out 7.00 x 4.78
asked by Anonymous 
Geometry.
HELP WITH ALOT OF QUESTIONS? TRIG? I don't get any concepts.
asked by Amy. 
grammar
what is the predicate adjective and participle in this sentence? Nearly a hundred years later, a talented ballet dancer appeared in the same city.
asked by kali 
Communication Language Studies
Have the use of war metaphors gone too far? More specifically, does it matter? that is, do these metaphors really influence how people think and act about movies, sports, politics and "real" wars? I would appreciate any feedback! Thanks!
asked by Audrey 
Comp150.
What kind of supporting paragraphs would go with the following topic?Scientist have discovered human remanis thought to be more then 2 million years older then Lucy Explain why
asked by Lilly 
psychology
what is an example of effort justification
asked by melissa 
French/Sra
J'ai besoin de nouvelles chaussures noires. Je vais en avoir besoin pour la gym. J'ai besoin d'une nouvelle teeshirt rouge. J'ai besoin d'un nouveau jean bleu. J'ai besoin d'une nouvelle sandales blanches. J'ai besoin d'une nouvelle robe noir. I need one
asked by Anna 
physics
What must a muscle do in order to do work?
asked by Tommy 
English
Can you check these sentences for me and help me find suitable synonyms? 1) Julius Caesar has just come back from a victorious (or triumphant) battle against his rival Pompey 2) Where has J. just come back from? 3) Some of his followers plot (synonym)
asked by Franco 
Health care
Measuring the quality of care and areas of patient care needs improvement.
asked by Johnny 
PHYSICS!!!
If a machine cant multiply the amount of work , what is the advantage of using such a machine?
asked by Carly!!!!! 
PHYSICS!!!
If a machine cant multiply the amount of work , what is the advantage of using such a machine?
asked by Carly!!!!! 
algebra
is 7 less than or greater than 12
asked by a 
algebra
the circle to the right has 21 points. All possible line segments have been drawn. How many line segments are there?
asked by Leyla 
8th grade
hi, if 20 oz of fish cost 4.59, how much would 6, 12, and 36 oz cost? how would i plot this on graph paper? thank you! maribeth
asked by maribeth 
math
Krista has $0.85 in nickels and dimes. She has 2 more nickels than dimes. How many nickels does she have?
asked by Clara 
cultural diversity
ethnocentrism
asked by Anonymous 
math
The equation 9c5f+160=0 describes the relationship between temperature, C, in degrees Celsius, and temperature, F, in degrees Fahrenheit. b)graph this relation.
asked by dylan 
math
how do I solde this equation? pls help.. 1. 3/2x + 2 = 1/2  1/2x
asked by laura 
calculus
Solve for all real values of x. 3tan^2x = 3^1/2 tan x I have no idea how to approach this problem.
asked by Tracy 
math
The slopes of the two lines are given. Conclude whether the lines are parallel, perpendicular, or neither. a)m=2/3,m=4/6 b)m=3/4,m=4/3 c)m=2,m=2 d)m=1,m=1 e)m=1/5,m=0.2 f)m=2 1/4, m=4/9
asked by dylan 
english
what is needed to combine two sentences with a comma
asked by erin 
spanish 2
Which question is addressed to "usted" (talking to someone with formal respect)? Con quien hablaste? ¿De qué hablaste? ¿Cuánto tiempo estuviste en el teléfono? Que compraste en la tienda? ¿Que hiciste después ¿Te dormiste al colgar el teléfono? Te
asked by kate 
physics
the oxidation numbers of the elements in a compound must add up to
asked by meir 
Financial matters
how does fund accounting handle depreciation
asked by PEEWEE 
physics
the oxidation numbers of the elements in a compound must add up to what
asked by meir 
Financial matters
what are the strengths and weakness of accrual , cash flow and fund accounting?
asked by PEEWEE 
Science
what is the difference between RNA and DNA?
asked by Lynn 
finance
the Wrights found that both Tom and Sue had a life insurance protection gap of $50,000. Present the steps in sequence how Wrights should proceed to search for protection to close that gap?
asked by vickie 
math
how would i write this in an equation?if f is equal to or less than g than h must be equal to or pluss x
asked by armando 
chemistry
can u help me on these questions? 1) describe the development of the modern periodic table. include contributions made by Lavoiser, Newlands, Mendeleev, and Mosely. 2) describe the general characteristics of metals, nonmetals, and metalloids. 3) identify
asked by anon 101010 
maths
iam a common multiple of 3 & 7 my digits have a total of 9
asked by derek 
algebra
here is a tough one for me simplify 6[93(9518)]= help please
asked by a 
algebra
solve 0.8x
asked by me 
biology
__________________ charcters show many degrees of variation because they result from the additive effects of several ____________. Many human conditions are complex because they are influenced both by ___________ and by ___________. If two genes cross
asked by brooke 
Math
Write the equation of the line in slope intercept form that is parallel to y=2+11, and passes through the point (4,2).
asked by Kat 
English
I was wondering if someone could tell me how I can improve my thesis statement/opening paragraph. I'm writing an essay on hamlet from the perspective of formalism (examining a work of literature's language and structure). Here it is: Formalism is a type of
asked by Valerie 
calculus
A ship is running at 14 3/4 knots (nautical miles per hour) for 7 1/2 hours. How far does the ship travel?
asked by Jammie 
CHEM
can u rank the fallowing elements by increasing electronegativity: sulur, oxygen, neon, and aluminum. please help!
asked by Jay 
Chemistry
how do you find the molar volume of a gas?
asked by Tasha 
Chemistry
a few drops of NaOH are added to a sample of the unknown. A blue precipitate appears. Next, approximately 1mL of ammonia, NH3, is added. The precipitate dissolves, but the solution remains blue. Which ion is present. Explain
asked by Reen 
adult education
what are three most important steps in adult program planning
asked by jones 
health care coverage
what can be some major issues for unisured children?
asked by april 
aspirin
during the synthesis of aspirin, why do the crystals mostly form when the test tube is placed in the ice bath and not before?
asked by chrissy 
Physics
As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?
asked by Anonymous 
Physics
A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?
asked by Anonymous 
math
THE LETTERS A TO K REPRESENTS A DIGIT. WHAT DIGIT DOES EACH LETTER REPRESENT? THERE IS MORE THAN ONE POSSIBLE ANSWER. A) A A A A + B B B B C C C C A=? B=? C=? B) D D D + E E E F F F G D=? E=? F=? G=? C) H H H + I I I J H H K H=? I=? J=? K=?
asked by KHALLED 
algebra
5+5x
asked by help 
algebra
How do I writeeach decimal as a fraction in simplest form?
asked by Damian 
Public Speaking
where can i find a list of people or several people who perform interpersonal communication skill well. Im looking for example i can draw from to see what behaviors would be useful to incorporate into my own repertoire?
asked by Bryan 
Math 7th grade
34/6=(2x+1)/3
asked by Jake 
Finance
Cooper Inc's latest EPS was $4.oo, its book value per share was $20.00, it had 200,000 shares outstanding, and its debt ratio was 40%. How much debt was outstanding? a. $2,333,333 b. $2,666,667 c. $3,000,000 d. $3,333,333 e. $3,666,667
asked by Carry 
algebra
on three consecutive passes a football team gains 8 yards loses 39 yards and gaons 13 yards what number represents the total net yardage?
asked by me 
Statistics
Are large or small data sets more appropriate for using perecentiles to summarize data? Why?
asked by Anonymous 
PHYSICS
Phobos is the larger and closer of Mars’s two moons. It has no atmosphere, a mean radius of 11 km, an albedo of 0.07, and an emissivity of 1.0. (i) Assuming that the radiative temperature of Phobos is 222 K and that it is spherical, what is its mean
asked by physics help! 
Math
How would you graph the inequality x > 5
asked by Dan 
French
The class that you exchange email messages with in France is interested in learning about teen's shopping habits in north America. Write a short paragraph describing where you and your friends like to shop and what you like to wear at school. Tell how
asked by Anna 
biology
How does the orientation of the phospholipids in the bilayer allow a cell to interact with its internal and external environment?
asked by haleigh 
Math
How would you graph the inequality x > 5
asked by Dan 
niu
he Declining Fish Stock VLR located under the Week Six Materials section of your course materials. · Write a 500 word paper in APA format that includes the following: o A brief description of the water resource problem in the video and how it originated.
asked by tomika harris 
spelling
Hi. I want to know how i can defeat a hard word in a spelling bee competition? Thank You in advance
asked by Lilly 
Geography
Where is Wales located in relation to London? Thanks! (:
asked by Thea 
science project
I have a magnet on top of my hand and a steel screw underneath my hand and there is attraction. If I give it to an adult it doesn't work. Why?
asked by shannan 
English
What is the modifier of the prepostional phase and what kind of prepostional phrase is it? Adverb or Adjective? 1. Its invention in 1978 revolutionized technology. 2. The microwave oven was invented in 1946.
asked by Jenna 
math
Describe what happens to the three points of concurrency that determine the Euler line when the triangle is (a) isosceles, (b) equilateral.
asked by BB 
Trigonometry
"Sketch the graph of y=tan(x/2) By solving the equation x/2=pi/2 x= pi and the equation x/2=pi/2 x=pi..." Before I go any further, I need to understand where these equations came from. Where does the pi come from out of thin air? What becomes of the
asked by Ellyn 
chemistry
can u help me on these questions? 1) describe the development of the modern periodic table. include contributions made by Lavoiser, Newlands, Mendeleev, and Mosely. 2) describe the general characteristics of metals, nonmetals, and metalloids. 3) identify
asked by anon 101010 
math
a square has a length of 5 inches. Then it is increased by 20%. Then the same square has a width of 10 inches and it is increased by 10%. How Many Percents has the area of the square been increased By? Thanx 4 your Help
asked by qwertyuiop 
science
explain the order of the planets due to the external environments by becoming solids, liquids, or gases. In the case of planet ordering, external environmental factors of gravity and temperature combine to dictate position from the Sun.why?
asked by danielle 
Art history
What were the key goals of the Italian, Dutch, and Spanish Baroque art periods?
asked by AL 87 
percipitate and colour
a few drops of NaOH are added to a sample of the unknown. A blue precipitate appears. Next, approximately 1mL of ammonia, NH3, is added. The precipitate dissolves, but the solution remains blue. Which ion is present. Explain
asked by Reen 
English 1
Can someone analyze this I have no idea what it means its from the poem substance, Shadow, and Spirit You had better go where fate leads. Drift on the stream of infinite flux Without joy, without fear: When you must gothen go And make a little fuss as you
asked by Andrea 
Algebra
is 6x+6yards if the width is x yards find a binominal that represents the length
asked by Tanya 
medical record
deficiency form is compiled as a consequence of
asked by Anonymous 
science
What determins how quickly or slowly of a moving object changes position
asked by pj 
PsyDAG
Thanks so much for the help with my narrative last night! =) MC
asked by mysterychicken 
PHYSICS
Can a car move around a racetrack so that it has tangential acceleration byt no centripetal acceleration?
asked by hailey