Questions Asked on
April 22, 2012

ap physics
At serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is required for the ball to clear the 0.90mhigh net about 15.0m from the server if the ball is "launched" from a height of 2.50m ? part b)here (relative to server)
asked by clarissa 
Chemistry
How much heat is required to warm 229 g of ice from 45.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
asked by Skrillex 
Physics
an oil layer floats on 87 cm of water in a tank. the pressure at the bottom of the tank is 120.0 kPa. How thick is the oil?
asked by Deanna 
physics @ elena
can you please help me with this one At serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is required for the ball to clear the 0.90mhigh net about 15.0m from the server if the ball is "launched" from a height of 2.50m ?
asked by emily 
Physics
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a screen that is 2.75 m away. How wide is the slit?
asked by ####Nadine#### 
english
Put parentheses around the prepositional phrases. Identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective complement). 1. Take the box to your mother. 2. Sandy's throw to first base was short. 3.
asked by Monica 
math
the population of Canadian city is modeled by P(t)= 12t^2 + 800t + 40,00, where t is the time in years. when t=0, the year is 2007 A) according to the model, what will the population be in 2020? B)in what year is the population predicted to be 300,000?
asked by kennisha 
math
a steel ball weighing 128 lb is suspended from a spring, whereupon the spring is stretched 2 ft from its natural length. the ball is started in motion with no initial velocity by displacing it 6 in above the equilibrium position. assuming no damping force,
asked by anisah 
Physics
A 2.11 cm high insect is 1.31 m from a 125 mm focallength lens. Where is the image? Distance of the image is ? How high is it? What type is it?
asked by ####Nadine#### 
algebra
Joseph always throws change into a can and takes it out every two weeks. This time it is all nickels and dimes. There are six times as many dimes as nickels, and the value of the dimes is $4.95 more than the value of the nickels. How many nickels and dimes
asked by aj 
dav public school
find the product by using distributive property 241*107
asked by Anonymous 
physics
How much work does a refrigerator with a COP of 3.8 require to freeze 660 g of water already at its freezing point?
asked by I 
chemistry!
What volume of solvent should be added to 36.8 g of CH3OH to produce a 0.500 M solution of CH3OH?
asked by please help 
Vectors?
find an ordered pair to represent vector u in u = (3/4)w2v if vector w = and vector v = How do i do this?
asked by Tabby 
Chemistry Acid Question Ka
Enough of a monoprotic acid is dissolved in water to produce a 0.0165 M solution. The pH of the resulting solution is 2.38. Calculate the Ka for the acid.
asked by RZeal 
@damon
I am still getting the wrong answrs, can you please do me a favor and for each part list the formulas and steps i need to do in order to get the answer. thank you At serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is
asked by Clarissa 
Physics
Janet jumps off a high diving platform with a horizontal velocity of 1.73 m/s and lands in the water 1.8 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2 . Answer in units of m
asked by Joe 
Algebra 2
What is the angular speed in radians per second of the hour hand of a clock? If the hand is 5cm long, how fast is the tip moving in millimeters per second?
asked by Sonya 
chemistry
If you filled up three balloons with equal volumes of hydrogen, argon, and carbon dioxide gas all at the same temperature and pressure, which balloon would weigh the most? which balloon would weigh the least?
asked by akboyer31 
Vectors/Magnitude
The vector v has a magnitude of 89.7 feet and a direction of 12(degree sign)48'. find the magnitude of its vertical component a: 887.47 ft b: 19.87 ft c: 19.38 ft d: 87.58 ft
asked by Some1 Help Me Plz 
To Ms. Sue (PLEASE read!)
To Ms. Sue  Laruen, Sunday, April 22, 2012 at 6:05pm The radial artery is found close to the inside part of your wrist near your thumb. To Ms. Sue  Ms. Sue, Sunday, April 22, 2012 at 6:11pm Right!! To Ms. Sue  Laruen, Sunday, April 22, 2012 at 6:12pm ok
asked by Laruen 
Chemistry
If a buffer solution is 0.190 M in a weak acid (Ka = 5.8 x 10^5) and 0.550 M in its conjugate base, what is the pH? What if it said "if a buffer solution is ___ M in a weak base (Kb = ____) and ___ M in its conjugate acid, what is the pH? Would the steps
asked by Katherine 
Chemistry(Please check, thanks)
Which choice below has the highest standard molar entropy? SiCl4(s), CCl4(g), CCl4(l), Si(Cl4(l) I know that the gas state has the largest entropy so SiCl4(s) would have the highest. Is my answer correct? Thank you!!
asked by Hannah 
geometry
If the parallel sides of a trapezoid are contained by the lines and , find the equation of the line that contains the midsegment. Show equations and all work that leads to your answer.
asked by Anonymous 
physics
The Kâ characteristic Xray line for tungsten has a wavelength of 1.94 1011 m. What is the difference in energy between the two energy levels that give rise to this line? Express this in each of the following units. (a) joules (b) electron volts
asked by Jason 
Statistics
You are working as an assistant to the dean of institutional research at your university. She wants to survey members of the alumni association who obtained their baccalaureate degrees 5 years ago to learn what their starting salaries were in their first
asked by Julie Ann 
physics
A tire with an inner volume of 0.0250 m3 is filled with air at a gauge pressure of 30.3 psi. If the tire valve is opened to the atmosphere, what volume outside of the tire does the escaping air occupy? Some air remains within the tire occupying the
asked by Akbar 
Chemistry
(a) Explain what is meant by a weak acid. Methanoic acid (HCO2H) has a numerical value of Ka(T) at 298K of 1.60 × 104 (b) Write an expression for Ka(T) of methanoic acid, and state its units. (c) What is the pH value of a 0.10 mol dm3 aqueous solution
asked by Henry 
math
The table below shows the heights of 6 members of a basketball team. player: 1 , 2 , 3 , 4 , 5 , 6 height(in.): 54 , 60 , 82 , 60 , 84 , 65 Which measure best describes the team in terms of height? a. range b. mode c. median d. mean
asked by Kassidie 
science
Which techniques would you use if you were trying to detect the presence of a protein? Which techniques would you use to detect gene expression? How would you determine whether a tissue or cell was producing a steroid hormone? How would you confirm that a
asked by endo 
Science 7R  Worksheet (Q5)
********* Sorry I post too much question but these are the questions I'm having trouble with, the other questions on my science worksheet i done it by myself This is the last one I need help with and that's it E. How is the structure of a bone related to
asked by Laruen 
Algebra 2
The angular speed of a larger pulley wheel (radius=15cm) is 50 rev./min. Find the angular speed of the smaller wheel (radius=6cm).
asked by Mary 
Chemistry
Calculate the enthalpy of the reaction 2B2H6 + 6O2=2B2O3 +6H2O given the following pertinent information: A. B2O3(s) + 2H2) )g) = 3O2 (g) + B2H6 (g), delta H= +2035kJ B. 2B (s) + 3H2 (g) =B2H6 (g), delta H= +36 kJ C. H2 (g) + 1/2)2 (g) =H2O (l), delta
asked by B 
@elena
You helped me with this question earlier today, the answer you got was incorrect, i tried looking through your calculations but i cant find the mistake. the program wont let me see the right answer just tells the answer i put in was wrong. can you please
asked by JOEY 
Parametric to Rectangular?
find the rectangular eqaution of the curve whose parametric equations are x=5cos2T and y=sin2T, where 0 is less than/equal to T which is less than/equal to 180
asked by Tabby 
math
meg has 20 pet stickers to go on a page 1/4of them are dog stickers 1/2of them are cat stickers the rest are rabbit stickers how many rabbit stickers does she have?
asked by jack 
College
An electron enters the region of a uniform electric field, with v1=3*10^6 m/s and E=200N/C. The horizontal length of the plates is 0.100m 1. Fine the acceleration of the electron while in the field. 2. If the electron enters the field at a time t=0, find
asked by Tsoanelo 
To Ms. Sue
Ms. Sue I'm REALLY having trouble with those question in my science homework. b. A man has a blood clot in his Femoral artery. Where is the clot? c. Where would a nurse take your radial pulse? E. How is the structure of a bone related to its function? Use
asked by Laruen 
math
ABCD is a quadrilateral in which AB parallel DC and AD=BC.prove that (1)angle A + angle C =180 degree = angle B + angle D (2)AC=BD
asked by majumder 
geometry
A circular pool with a diameter of 32 feet is surrounded by a wood deck of uniform width. If the area of the deck is 68π square feet, what is x, the width of the deck?
asked by punk480 
Physics
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a screen that is 2.75 m away. How wide is the slit?
asked by ####Nadine#### 
precalc
find the exact value of the given expression. Thank you! tan(1/2cos^1(9/10)
asked by Kim 
precalculus
cosx= 8/17, 180
asked by Adam 
precalculus
tanx= 12/5 x in quadrant 2 find; sin2x= cos2x= tan2x=
asked by Adam 
Chemistry
Calculate how many grams of the product(s) would be produced by complete reaction of 0.125 mole of the first reactant. CaCO3 + 2HCl > CaCl2 + CO2 + H2O
asked by Lindsey 
Chemistry
Do free electrons appear anywhere in the balanced equation for a redox reaction? a) Yes, free electrons appear in the right part of the equation. b) Yes, free electrons appear in the left part of the equation. c) Yes, free electrons appear in the both
asked by Abby 
Foreing languages
Writeacher, can you please have a look if the following definition of interior monologue is correct (from the point of view of the content). Can you suggest a site on which this topic is investigated in further detail? 1) The interior monologue has the
asked by Mike1 
intro to law of torts
The main difference between a claim in a contract for rescission and a claim in tort for fraud include: The remedy, the proper measure of damages. The court where the trial will be held. The length of the trial. The elements a plaintiff must prove. None of
asked by michelle 
math
determine the xintercept of the quadratic function f(x)= 2x^2+ x15
asked by kathy 
chemistry 2
What does a negative E cell indicate about a redox reaction? What does is indicate about the reverse reaction?
asked by anonymous 
Physics
A 1.55 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 16.5 cm. Find the total mechanical energy of the system Find the maximum speed of the mass
asked by Alex 
Physics please help!
The de Broglie wavelength of a proton in a particle accelerator is 3.60 x 10^14 m. Determine the kinetic energy (in joules) of the proton.
asked by Jessie 
College Majors?
I am a senior rapidly approaching the end of my high school education. Of course college is on my rader. I plan to go to doublemajor in journalism and art. I want to get my bachelor's degree in journalism so I can become an editor. I can work this job
asked by At A Crossroads 
life orientation
Critically discuss 8 ways in which the waste dumps impacts on the community
asked by Anonymous 
English
Writeacher, I've found an example of interior monologue with two levels of narration. Now I have to link it to my definition. Can you please help me? The second type of interior monologue is characterized by two levels of narration: one external to the
asked by Mike1 
physics
Using the Bohr model, estimate the wavelength ë of the Ká characteristic Xray for a metal an atom of which contains Z = 50 protons.
asked by jason 
science
what are temporary magnets and permanent magnets?
asked by Celest 
Science 7R  Worksheet (Q3)
b. A man has a blood clot in his Femoral artery. Where is the clot? please help!!!!
asked by Laruen 
precalculus
tan(1/2)cos^1(9/10)
asked by Kim 
Science 7R  Worksheet (Q4)
c. Where would a nurse take your radial pulse? PLEASE help!!!
asked by Laruen 
chemistry
how much energy is needed to warm a 45g iron sample from 20 degrees celsius to 37.5 degrees celsius?
asked by Anonymous 
chem
How many molecules are in 1.60 g of SO2? Answer in units of molec
asked by luke 
Chemistry
Calculate the pH at the equivalence point in titrating 0.110 M solution of sodium hydrogen chromate (NaHCrO4) with 8.0×10−2 M NaOH.
asked by Kaitlyn Smith 
chemistry!
How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 > 2NH3
asked by please help 
society, please help
What is a negative problem with today society??? What is society's biggest problem??
asked by KATHY☺☻ 
project mgmt
A project has an expected duration of 34 weeks with a critical path variance of 6. Suppose the project network is given and the critical path is identified on the network. Suppose the normal time, crash time, and the associated cost for each activity is
asked by kathy 
marketing
Unit 5 Individual Project Deliverable Length: 45 body pages, 1 PERT chart, 1 Gantt chart Details: Using your current work organization (or an organization of interest) as the subject matter, research the elements of business and prepare an APA formatted
asked by d 
math
find the product of 5.2 x10^3and 6.5 x10^7
asked by wanda 
English
I have to write a argment Paper and it is based on Native Americans traditional culture. I don't know it this is a good thesis: Although Native Americans face challenges, they keep their tradition alive.
asked by La 
language arts/math
what is an irregular polygon. what is congruent. what are corresponding angles. what are corresponding sides. FULL SENTENCES PLZZZ!!!!
asked by smiley 
Math
Explain how you know that the triangle formed is BOTH right & isoceles?
asked by Scott 
English
Yes, it's correct. Thank you very much. I urgently need you to check this paragraph. 1) Here below you can find the list of the students you sent me. I pair each of your students with an Italian partner for the email partnership. 2) You should send me as
asked by Mike1 
computer network engineering
a steel ball weighing 128 lb is suspended from a spring, whereupon the spring is stretched 2 ft from its natural length. the ball is started in motion with no initial velocity by displacing it 6 in above the equilibrium position. assuming no damping force,
asked by anisah 
physics. HELP PLEASE !
An athlete executing a long jump leaves the ground at a 28.0 angle and lands 7.60m away. part a)What was the takeoff speed? part b) If this speed were increased by just 8.0 % , how much longer would the jump be? i got for part a)9.48 m/s but i need help
asked by emily 
writing
what is the behaviors associated with editing
asked by margaret 
biology
How does carbon dioxide emissions from factories, cars and trucks effect global warming? How does methane released from landfills and agriculture effect global warming?
asked by Henry 
MAth
A 13 foot ladder is resting against the wall. The bottom is initially 10 feet away from the wall and is being pushed towards the wall at a rate of 0.25 ft/sec. How fast is the top of the ladder moving up the wall 20 seconds after we start pushing? Hint:
asked by Sam 
Chemisty
When the following equation is balanced properly under acidic conditions, what are the coefficients of the species shown? ClO3 + HAsO2 Cl + H3AsO4 Water appears in the balanced equation as a _______(reactant, product, neither) with a coefficient of____ .
asked by mercy 
@damon physics
I was wondering if you can help me with these two questions. Thank you Question # 1 A horse is pulling a heavy cart up a hill. The cart has 400 kg of mass inside it. The horse is pulling the cart with 10 N of force. What is the magnitude of the force on
asked by Teal 
physics
At serve, a tennis player aims to hit the ball horizontally. part a)What minimum speed is required for the ball to clear the 0.90mhigh net about 15.0m from the server if the ball is "launched" from a height of 2.50m ? part b)here (relative to server)
asked by Clarrissa 
English  ms. sue
ms. sue for my metaphor, i write one line that say trees losing leaves lead to new growth of them, so i not let myself get disappointed if a write something poorly i believe in hope... i not know what add after hope.
asked by Mohammad 
Cardiovalscular
Phonology refers to the science which treats A. vocal sounds B. heart rhymths C.nutrional deficiencies D. blood disorders my answer is (C) can someone check my answer
asked by Brenna 
FACS  Reading Assignment (Q2) Check
3. Explain  Why are foodslab tasks moved from one person to another? Answer  The reason why are foodslab tasks moved from one person to another is because when team members work together to complete tasks in the school foods lab, the whole group
asked by Laruen 
Science
A ball of mass 0.2kg falls from a height of 45m. On striking the ground it rebounds in 0.1s with twothirds of the velocity with which it struck the ground. Calculate i the momentum change on hitting the ground, ii the forcn on the ball due to the impact.
asked by Moriam 
Chemistry
It is found that an unknown gas has a density of 2.5 times that of Oxygen gas of the same Temperature and Pressure. What is its molecular weight?
asked by Haley 
L.o
Global warming.name two institutions/community organizations that are involved in supporting or giviing redresss to these disaster.Explain how these organizations are involved in providing a safe and healthy environment.(suggestion:Find out about NGO's or
asked by Esther 
physics
The balloon contains 0.30 {\rm mol} of helium starts at a pressure of 115 {\rm kPa} and rises to an altitude where the pressure is 55.0 {\rm kPa}, maintaining a constant 300 {\rm K} temperature. (A)By what factor does its volume increase? (B)How much work
asked by George 
Chemistry
you make a solution by dissolving 25.0g of sodium chloride in 100.0 mL of water. What is the boiling point of the solution?
asked by akboyer31 
HOW TO CALCULATE LASS WIDTHS?
can someone tell me how to calculate class width. suppose the number of classes and class widh being 5 and 12 respectively.form a grouped frequency distribution.. the maximum is 98 while the minimum is 12. Should i calculate it: maximum  minimum that is
asked by PALLAVI 
chemistry
N2(g) + 3 F2(g) → 2 NF3(g) ΔH° = –264 kJ/mol ΔS° = –278 J/(mol∙K) a. calculate the maximum amount of nonPΔV work that can be accomplished through this reaction at a temperature of 500°C. b. Determine the temperature at which the equilibrium
asked by chamy 
chemistry
If im trying to separate alcohol from water by distillation, is it possible if I heat the mixture to 100degreeC so water reaches its boiling point? I mean, is this method only workable if I distill the alcohol which has a lower boiling point first? What
asked by Hae 
chemistry
Hydrogen peroxide can be produced in the lab by reacting barium peroxide with hydrochloric acid. another product of the reaction is barium chloride. 1). what is the balanced chemical equation for the reaction? 2). what mass of hydrogen peroxide should
asked by akboyer31 
math
simplify 40 – (10 – a) – ( 10b ) – (10c_ ) – ( 10d )
asked by Josh Baker 
chemistry
assume the volume of an idol is 1.0L, if it were solid gold, what mass would the idol have? is playing catch with the idol plausable? Density of the gold is 19.32 g/cm3
asked by akboyer31 
chemistry
radiocarbon is used to estimate the age of which of the following? SAND,QUARTZ,WOOD
asked by plz help me 
geomotry
Anita says that a Plus sign + forms 2 pairs of veritcal angles Charles says it forms 2 pairs of congruent angles who is correct? explain
asked by chase 
geometry
find the equation of the circle having center on 3x+y=6 and tangent to both axes
asked by nyl 
math
an oil drum is 8ft high and 2 ft in diameter if the drum is half full how much is in cylinder. please show explanation
asked by Faith 
Chemistry
When 7 mL of a solution containing 4 M KNO3 is diluted to 23 mL, a dilute solution is formed. What is the NO3 concentration in 15 mL of the dilute solution?
asked by Amanda 
environment
In 1015 lines critically discuss 5 ways of water pollution what impacts does it have to the community
asked by Zandile 
foreign language
Americans Despite its ethnic diversity, the United States has managed to absorb bits and pieces of many cultures and weave them into a unique culture that is strikingly consistent and distinct. You can pick out Americans anyplace in the world, often very
asked by sara 
geometry
need help please: the sides of the triangle on the lines 6x7+11=0 2x+9y+11=0 and 9x2y11=0. find the equation of the circle inscribed in the triangle.
asked by nyl 
Chemistry
What are the enthalpy, entropy, and free energy for the hydrogenation of ethene (C2H4) to ethane (C2H6) at 25 degrees. Is this a spontaneous process and how can you tell?
asked by anonymous 
Life orientation
Critically discuss 8 ways in accidents which the everomental problem impacts on your community or any other community within south africa or globally
asked by Masego 
science
A mass,m of water at 100degree celcius is added to another mass of water ,m at a temperature,t. The reslting temperature of the mixture is T. If the specific heat capacity of water is 4.2J/gk. Drive an expression for L terms of other quantities.
asked by n s k 
biology
A farmer buys a land.There were lots of insectivorous plants in it.He was unaware of this,but when he came to know this he decided not to cultivate any crops and return the land.What could be the reason behind this decision?
asked by help me out it's urgent 
biology
what is the need for vertebrates to evolve from oviparity to viviparity?
asked by help me out it's urgent 
Math
Lisa has downloaded 260 songs on her mp3 player,of her260 songs, 117 are pop music. What percent of lisas songs are pop music. Can someone explain please
asked by Mike 
ALGEBRA
A telephone company has a choice of two plans. Plan A  $30 per month and $.05 per phone call and Plan B  $20 per month and $.10 per phone call. Which is the best plan for you? I need to form two equations with the above, please help
asked by ODSSEY 
MathTrigonometry
Use the halfangle formulas to find the exact values. Cosine 165 degrees, Sine 157 degrees 30' and tan pi/8
asked by Neicey 
Social studies
At were the social studies education was introduced?
asked by Hayatuddeen Adamu sani 
chemistry!
If the chemist mistakenly makes 275 mL of solution instead of the 200 mL, what molar concentration of sodium nitrate will the chemist have actually prepared? Answer in units of M
asked by please help 
Social studies
Why the scope of social studie education is flexible?
asked by Hayatuddeen Adamu sani 
Accounting
1.state ten users of accounting information and show their intrest 2. Enlimurate eight qualities that accounting information must poses. 3. Itemize at least eight roles of accounting in any organisation.,
asked by Charles 
computer programming
Make an Maplet that does the simple calculator funtions as addition, subtraction, multiplication, division, factorial, sin(), cos(), tan(). (using maplet in maplesoft)
asked by david 
english
Please help with my speech
asked by Anele 
Science HW Check
D. Name the joint shown in each picture 1. Elmbow answer  Antecubital fossa. 2. wrist answer  carpal 3. shoulder answer  glenohumeral 4. neck vertebras answer  ????????????????? what is the joint in your neck vertebrae called?????????? can you check to
asked by Laruen 
Chemistry
Enough of a monoprotic acid is dissolved in water to produce a 0.0195 M solution. The pH of the resulting solution is 6.24. Calculate the Ka for the acid. Also, the answer is not 1.7 * 10 ^ 11 The response is: You treated the initial concentration as 0.
asked by chem1 
Chemistry
a compound is made up of iron and oxygen, only. the ratio of iron ions to oxide ions is 2:3 in this compound. the iupac name for this compound is?
asked by Glenn 
Accounting
1.state ten users of accounting information and show their intrest 2. Enlimurate eight qualities that accounting information must poses. 3. Itemize at least eight roles of accounting in any organisation.,
asked by Charles 
life orientation
identify and describe one environmental problem that causes ill health,accidents,crises,and disasters within south africa
asked by nelly 
Chemistry
A solution in which no more solid can be dissoved is referred to as [saturated?] In such a solution, the concentration of solute is called the ____ when reported in g/L and the [molarity?] when reported in mol/L. Does anybody know what might go in that
asked by Katherine 
chemistry
you dissolve 6.55g of potassium nitrate in enough water to make a 250ml solution. if you add 1.25 l of additional water to this solution.what is the molarity of this new solution.
asked by cateye 
math
the point of intersection of the diagonals of a quadrilateral divides one diagonal in the ratio 2:3. is it parallelogram ? give reasons
asked by majumder 
Government
Nigeria has been characterized as the most corrupt country in the world and evidence of corruption has been manifested daily by public officers. My question Discuss the nature, cause , forms and means of eradicating controling corruption in public
asked by Charles 
macroeconomics
gov. increases expenditures by $100 billon and marginal propensity to consume is 0.50 by how much will equilibrium gdp charge
asked by dixie 
Algebra
What is the perimeter of a computer graphic with sides measuring: 2 times the square root of 50, 3 times the square of 72, 6 times the square root of 98, and 3 times the square root of 12 centimeters?
asked by Taurus 
Life orientation
In 1015 lines critically discuss 5 ways in which the human or envirmnmental problem on the community.provide relevant sources to support the claims.
asked by Miss t.k 
English  ms. sue
ms. sue i have to write two paragraphs one in which i just say what type writer i be and the other one be explaining what type metaphor i be. for paragraph which tell what type writer i be, i hve little bit stuff i add, but i not know what else to say
asked by Mohammad 
physics
The Kâ characteristic Xray line for tungsten has a wavelength of 1.94 1011 m. What is the difference in energy between the two energy levels that give rise to this line? Express this in each of the following units. (a) joules (b) electron volts
asked by jason 
math
prove that the diagonals of isosceles trapezium are equal
asked by majumder 
History
Can someone explain how the term regime relates to LAPD SWAT because i am getting confused. Thank you :)
asked by Anonymous 
chemistry
calculate the pressure when 57 g of flourine at 55 degrees celsius is confined to a 152 liter container.
asked by brad 
physics help!
Using the Bohr model, estimate the wavelength ë of the Ká characteristic Xray for a metal an atom of which contains Z = 50 protons.
asked by jason 
Physics
The interatomic spacing in a crystal of table salt is 0.281 nm. This crystal is being studied in a neutron diffraction experiment, similar to the one that produced the photograph in the figure. How fast must a neutron (mass = 1.67 x 10^27 kg) be moving to
asked by Matt 
Algebra
Multiply: (6 times square of 5 + square root of 5)(square root of 3  4 times square of 5) Note: How do I type the symbol for square root?
asked by Jay 
math
ABCD a parallelogram in wich AB=6.5cm,AD=4.8cm,BD=5.7cm.what will be the measure of its diagonals
asked by majumder 
English  ms. sue
ms. sue i also want to say this about leaves that they draw energy from their surroundings but how i make that relate with me?
asked by Mohammad 
PHYSICS
Q: AN OBJECT IS MOVING PAST YOU IN A STRAIGHT LINE WITH A CONSTANT SPEED. YOU CAN CONCUDED A. THAT THERE IS A CONSTANT FORCE IN THE DIRECTION OF MOTION B. THAT THERE ARE NO FORCES ACTING ON THE OBJECT C. THAT THE NET FORCE ON THE OBJECT IS ZERO D. NONE OF
asked by JACOB 
Calculus 1
A 10m ladder leans against a wall at an angle theta with the horizontal. The top of the ladder is x metres above the ground. If the bottom of the ladder is pushed towards the wall, find the rate at which x changes with respect to theta when theta equals 60
asked by Yain 
Chemistry
A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure acetic acid Is a liquid density of 1.049 g/ml. how many ml of acetic acid should be dissolved to male 500 ml of 8% acetic acid?
asked by Kate 
FACS  Reading Assignment Help!
7. Explain  Why is it important to evaluate the work plan? What might happen if team members fail to evaluate it? Answer  The reason why it's important to evaluate the work plan is because so that they understand what did correctly, what could be
asked by Laruen 
Cardiovascular
leukemia affects the bone marrow and develops gradually. A.acute myelocytic B. chronic lymphocytic C.acute lymphocytic D.chronc myelocytic My answer is Chronic Lymphocytic
asked by Brenna 
math
in an isosceles triangle ABC ,AB=AC.if AB and AC are produced to D and E respectively so that BD=CE.prove thatBE=CD
asked by majumder 
math
line segment AB and CD bisect each other at O . join AC and BD . prove that tringle AOC congruent triangle BOD
asked by majumder 
physics
What is the longest wavelength that can be heard by a normal ear?
asked by Katherine 
physics concept
An astronaut who is floating freely through space is seated upon a unicycle. He begins to pedal the unicycle “forward.” As he does so,what would the astronauts' motion be in space? Would he rotate in the opposite direction of the spinning wheel?
asked by Hannah 
math
show that the measure of each angle of an equilateral triangle is 60 degree
asked by majumder 
Physics
A 2.11 cm high insect is 1.31 m from a 125 mm focallength lens. Where is the image? Distance of the image is ? How high is it? What type is it?
asked by ####Nadine#### 
Physics
I don't get this problem! Please show work. Thanks!! The de Broglie wavelength of a proton in a particle accelerator is 3.60 x 10^14 m. Determine the kinetic energy (in joules) of the proton.
asked by Jessie 
math
3 boys or 5 girls can clean a compound in 8 hours. in how many hours will 2 boy 2 girls clean the same compound
asked by majumder 
chemistry!
How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3H2 ! 2NH3
asked by please help 
math
A does 8/15 of a work in 8 days and the remaining work is finished with the assistance of B in 4 days . how long will B take to do the work alone
asked by majumder 
geometry
Denise poured milk into a glass shaped like a right circular cylinder with a radius of 2 inches. When she added chocolate syrup to the milk, the height of the liquid in the glass increased by 1/2 inch. What was the volume of the chocolate syrup that Denise
asked by Slacker 
trig
2sec(3x(pi/3)) Find the period.
asked by Nathan 
Math
Part A Lisa has downloaded 260 songs on her mp3 player,of her260 songs, 117 are pop music. What percent of lisas songs are pop music. Part B country music makes up to 20% of lisas 260 songs. How many songs are country music .. PartA already answered I need
asked by Mike 
physics
An athlete executing a long jump leaves the ground at a 28.0 angle and lands 7.60m away. part a)What was the takeoff speed? part b) If this speed were increased by just 8.0 % , how much longer would the jump be? i got for part a)9.48 m/s but i need help
asked by emily 
life orientation
environmental factor cause.accident .crises or disasters which negatively on our health
asked by michael 
Transportation and Security
what are potential vulnerabilities of airplanes?
asked by chris 
l.o
in 1015 lines critically discuss 5 ways in which the envirommental problem impacts on the community.provide relevant sources to support your claims.
asked by dzulani 
FACS  Reading Assignment Help!
THINKING CRITICALLY 6. Apply  Make a list of three (3) other activities, besides cooking, in which dovetailing would be helpful. I need help!
asked by Laruen 
Algebra
During the first part of a trip, a canoeist travels 57 miles at a certain speed. The canoeist travels 13 miles on the second trip at a speed 5 mph slower. The total time for the trip is 5 hrs. what was the speed on each part of the trip? The speed on the
asked by Stella 
vhulaudzi
environmental issue
asked by dzulani 
math
Observe the patterns in the sequence below. What is the missing algebraic expression in the box? Express your answer in terms of c. 5 4 5a 2a 10b b 40 2 6 ? 2 5c
asked by Al 
PLEASE COME LIST YOUR OPINIONS!
I'm writing a poem and it requires me to list reasons on what you want your significant other to do to make you happy. SEEMS EASY ENOUGH, RIGHT? So I want to hear your thoughts on this particular topic :D
asked by Haley 
Physics
A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is not true?< (A) The passenger is in motion relative to the passerby (B) The passerby is stationery relative
asked by eze1111 
transportation and cargo security
what agencies had the biggest impact on global transportation security post 9/11. would this be like... • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border
asked by chris 
geometry
A scuba diver is at the surface of the water and preparing to swim to a shipwreck. The shipwreck is 20 meters underwater and the diver is 65 meters away from a buoy that shows where the shipwreck lies. At what angle does the diver have to swim to reach the
asked by Anonymous 
to ms.sue
karmen wears a wool sweater. she touches her foot on the carpet. what will happen? i said she will get shocked, but why. my friend said electrical charges flow through, but why?
asked by Celest 
Physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min
asked by Amy 
Microeconomics
If fixed cost is $8,000, variable cost is $5,000 at an output of 2 and $9,000 at an output of 3, how much is marginal cost at an output of 3?
asked by Beth Martin 
math  Additional Info
The value of a $20,000 car decreases every, t. The equation below model this situation. 20,000(10.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me
asked by Jane 
marketing
Can you help me to understand what a positioning and differentiation strategies for the product would be?
asked by Patiance 
Algebra. Please help(:
The time required for a trip 108 miles downstream on a steamer is 3 hours less than the time required for the upstream trip. A boat whose rate is 6 miles per hour less than that of the steamer required 9 hours more for the upstream trip than for the
asked by My Name Is Bob 
Statistics
How do I find a percentile if I only have the mean and sd? ie...what IQ score is associated with the 65th percentile?mean is 100 and sd is 15. Thanks in advance :)
asked by joey 
geometry
The surface area of the following square pyramid is 152 cm2. What is the slant height, l, of the square pyramid in centimeters? The base is 8cm.
asked by Anonymous 
SCI HW CHECK
D. Name the joint shown in each picture 1. Elmbow answer  Antecubital fossa. 2. wrist answer  carpal 3. shoulder answer  glenohumeral 4. neck vertebras answer  ????????????????? what is the joint in your neck vertebrae called?????????? can you check to
asked by Laruen 
calculus
Suppose x=4sin(theta, for theta (pie/2, pie/2). Rewrite(sqrt16x^2)^3/x^3 (Sorry Im not very good at making symbols. I hope you know what I mean here! if not I can try to rewrite it a different way)
asked by maura 
english
I need someone to check my answers to see if what I have is correct. I think that I finally got the hang of this. I need to underline the adjective clause in each sentence and circle the modified noun. Then I need to identify the clause as restrictive or
asked by Brandie 
environment
Identify 1 environmental factor or human factor that cause ill healthy within your community withn south africa.in 1015 lines critically discuss 5 wayz in which the environmental proplem impacts on the community.
asked by Zandile 
precalc
simplfy the expression by double angle formula or a half angle formula. cos^2(x/2)sin^2(x/2) 2sin(x/2)cos(x/2)
asked by Amanda 
geometry
the volume of a cylinder is 88 m. If the radius of the cylinder is quadrupled, what will be the volume of the new cylinder in cubic meters?
asked by Mary 
to ms.sue
i still don't get it.
asked by Celest 
chemistry
What would the pressure be if h3 po4 was vaporized in a 20L container at a temperature of 23.5 degrees Celsius?? ( gas law)
asked by Liz 
to ms.sue
what will the sciencepssa have? magnets and electricity?
asked by Celest 
Algebra
Building windows: Window World, Inc., is responsible for designing new windows for the expansion of the campus chapel. The current design is shown in the figure. The metal trim used to secure the perimeter of the frame is 126″ long. If the maximum window
asked by Yadira 
AP Calculus
Let R be the region bounded by the xaxis and the graph of y=6xx^2 Find the volume of the solid generated when R is revolved around the yaxis
asked by Kelsey 
science 6th grade
do you know where I can find in abc order all of the STATES AND THEIR CAPITALS MAYBE A LINK. THIS IS FOR MY HOMEWORK TOMORROW.....THANK YOU IN ADVANCE FOR YOUR HELP!
asked by xavier 
Life Orientation
identify and describe the environmental problem waste dumps
asked by Duduzile Thanjekwayo 
Chemistry
Calculate how many moles of products(s) would be produced if 0.500 mole of the first reactant were to react completely. BaCl2 + 2AgNO3 > 2AgCl +Ba(NO3)2
asked by Lindsey 
algebra
the length of a rectangle is twice it's width. if it's length is decreased by 3 cm , and it's width is increased by 5 cm the result will be a square , then the perimeter of this rectangle will equal ...... cm
asked by Amr 
Chemistry help!!
A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure acetic acid Is a liquid density of 1.049 g/ml. how many ml of acetic acid should be dissolved to male 500 ml of 8% acetic acid? It
asked by Kate 
Chemistry(Please check)
1) Free energies of formation are a. always positive b. always negative c. never zero d. measured at 298K e. more than one response above is correct I think that free energies can be negative or postive so the answer cannot be e. I chose answer d, they are
asked by Hannah 
Chemistry
Given the unbalanced equation: (NH4)2 CO3> NH3 + CO2 + H2O Calculate the mass of ammonia gas that is produced if 1.25g of ammonium carbonate decomposes completely.
asked by Lindsey 
chemistry
following equilibrium system with a Kc of 1.23E03: C3H6O (aq) + 2C2H6O (aq)> C7H16O2 (aq) + 2H2O (l) 1.What is the equilibrium expression for this system? 2.If the molar concentrations of C3H6O2 and C2H6O are both 0.255 at equilibrium, what is the
asked by cateye 
Chemistry(Please check)
Delta G^o for a reaction can be calculated from? 1. delta G^o f data 2. Delta H^o f and delta S data 3. equilibrium constants I chose that delta G can be calculated from H and S values. Would you agree?
asked by Hannah 
Health
Jennifer is fiftyfour. Her husband Brian died suddenly in a care crash. Not only was she emotionally distraught, but she found herself in serious financial turmoil. Brian had handled the finances (at least she had thought he had) throughout their 21 year
asked by RT 
English  ms. sue
ms. sue this be ending part of my description writer paragraph, you please tell me if it be good, also what be last thing i say to conclude it well? I go through a lot of obstacles in my writing, but I’m always guided the right way. I like being in a
asked by Mohammad 
intermediate algebra
Factor completely.Using the AC method....6x^34x^210x
asked by Lueshelle 
Chemistry help!
Hi! In practice, why is the volume of oxygen obtained from the electrolysis of water LESS THAN half the volume of hydrogen obtained? I'm guessing it might have to do with gases escaping? Help!
asked by Josh 
precalculus
(tan^2x9)(2cosx+1)=0 Find one period 4cos^2x4cosx+1=0 find all angles and name 8 angles 7sin^2x22sinx+3=0 find all angles and name 8 angles 2cos^2x7cosx=3 find one period sinx(2sinx+1)=0 find one period
asked by Adam 
l.o
Cancer Describe life style disease \ behaviour and explain 5 factors that contribute to the disease
asked by vuledzani 
East Asia,and south easia
With respect to human rights issues in Southeast Asia, which statement is most accurate?
asked by Vikki 
chem
The ion product Of D2O is 1.35x 10^15 at 25 degrees C. For a solution to be acidic the PDF must be what?
asked by court 
chem
A distribution curve shows how fractions of nonionized acid and its conjugate base vary as a function of Ph. The curves of the plot of [CH3COOH] vs. [CH3COO] vs. PHwill intersect at a Ph of What?
asked by court 
Writing  application essay
I am writing an application essay to try and get accepted into Haywood Early College. I am writing four paragraphs and I already have 2 paragraph topics. I guess what I am trying to ask is could I possibly get help with 2 more topics?
asked by MayMay 
l.o
Five ways in which you critically discuss how life style\behaviour disease impact on the teenager?
asked by vuledzani matsobane 
Chemistry
You are instructed to prepare 250 mL of a solution which is 50 M in NaCl and 0.10 M in acetic acid. Solid NaCl and a 3.0 M solution are avaliable. How would you prepare this solution?
asked by Orianna 
Differential Equations
Find the eigenvalues and eigenfunction for the BVP: y ' ' '+ λ2 y ' = 0 , y(0) = 0, y’(0) = 0 and y’(L) = 0
asked by Chuck 
Bio Anatomy
Do you guys know of any sites that talks about the gentics of occipital lobe epilepsy?
asked by Nicole 
Differential Equations
Find the charge on the capacitor in an LRC series at t = 0.02 sec when L = 0.05 h, R = 2 Ohm, C = 0.01 farad. The initial conditions are q(0) = 5 C, i(0) = 0 Ampere. Determine the firt time at which the charge on the capacitor is equal to zero. Also, find
asked by Chuck 
Chemistry
how many gram of Co2 are formed for every gram of CH4 that combusts
asked by Ambra 
Differential Equations
The boundary value problem Ty"+ ρ(ω^2)y' = 0 , y(0) = 0, y(L) = 0 is the model of the shape Of a rotating string. Suppose T and ρ are constants. Find the critical angular speed ω = ωn for which there is nontrivial solutions.
asked by Chuck 
Physics
A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min
asked by Amy 
transportation and cargo
would these agencies have the biggest impact on global transportation security post 9/11. • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border Protection (CBP) •
asked by chris 
Physics please help!
Using the Bohr model, estimate the wavelength ë of the Ká characteristic Xray for a metal an atom of which contains Z = 50 protons.
asked by linds 
English
I just wanted to know if there are alternatives to the prepositions I included. Thank you, Writeacher. 1) The students are happy about their exam results. 2) They are enthusiastic about .... 3) They are satisfied with ... 4) They are disappointed with.....
asked by Mike1 
PSY
Describing CPT Catergories Check Point
asked by C 
Science
Effects of global warming due to methane gases from land fills and animals? Effects of global warming due to carbon dioxide from cars and factories?
asked by Henry 
Vectors?
Find an ordered triple to represent vector x in x = 6z+1/4y if vector y= and vector z = Please and thank you. Multiple Choice: a) b) c) d)
asked by Tabby 
Biology
what are some medicines that help someone sleep. and what is the Chemistry Makeup of those medicines used for sleep and the effect on the brain
asked by Ginger 
physics
A particle has a de Broglie wavelength of 3.30 1010 m. Then its kinetic energy quadruples. What is the particle's new de Broglie wavelength, assuming that relativistic effects can be ignored?
asked by jason 
Sum Of Unit Vectors?
write MN as the sum of unit vectors for M(3/4, 5, 2/3) and N(6, 9, 3/5). Someone help me please?
asked by Tabby 
Accounting
State ten users of accounting iformation and show their intrest 2 enumurate eighth qualities that accounting information must posses 3. Itemize at least eight rules of accounting in any organisation.
asked by Charles 
Physics
Radio waves are electromagnetic waves that travel at a speed of 3.00 108 m/s, the speed of light. An AM radio station has an assigned frequency of 1350 kHz, which means that the radio waves broadcast by the station are at this frequency. Find the
asked by Alex 
Rhetoric
What is the relationship between feminist theory and traditional rhetorical theory? and how do they connect?
asked by Danielle 
stoichiometry
determine the number of moles in 4.50g of MgCl2?
asked by kim 
Science
Effects of global warming due to methane gases from land fills and animals? Effects of global warming due to carbon dioxide from cars and factories?
asked by Henry 
Intermediate Algebra
If a projectile is fired straight upward from the ground with an inital speed of 96 feet per second, then its height (h) in feet after t seconds is given by the equation h(t)=16t^2+96t Find the maximum height of the projectile.
asked by Ralph 
FACS  Reading Assignment Help!
I have this reading assignment for Family and Consumer Science. She gave us this packet for notes and to read to answer questions she gave us (that's our reading assignment which she is grading). So we answer the questions and to find the answers we look
asked by Laruen 
English
Is there a difference among the following sentences, Writeacher? Thank you. I included a few other sentences. He made breakfast himself. He made breakfast by himself. He made breakfast on his own. He made himself breakfast. 1) You shouldn't fuss (not make
asked by Mike1 
Science 7R  Worksheet
Title of the worksheet  What is the structure and function of our skeletal system? B. Identify three bones that protect internal organs ******** There is this chart on the left it says "bone" and on the right it says "Internal Organ Protected" (there are
asked by Laruen 
english
how do i write a commentary on a newspaper? I searched on google but i don't get it.
asked by mandy 
physics
A hot iron horseshoe (mass = 0.43 kg), just forged (Fig. 1416), is dropped into 1.60 L of water in a 0.26 kg iron pot initially at 20°C. If the final equilibrium temperature is 26°C, estimate the initial temperature of the hot horseshoe. Could someone
asked by Julie 
Physics
You observe that 32 crests of a water wave pass you each minute. If the wavelength is 10 m, what is the speed of the wave?
asked by Madelyn 
english
Can you check my poem if it has 10 syllables per line and any other mistake? and thank you. You just didn’t know how much I loved you How hard I tried and you still didn’t know How close we were was something oh so true I don’t think it was right for
asked by joseph 
Algebra
During the first part of a trip, a canoeist travels 57 miles at a certain speed. The canoeist travels 13 miles on the second trip at a speed 5 mph slower. The total time for the trip is 5 hrs. what was the speed on each part of the trip? The speed on the
asked by Stella 
Science 7R  Worksheet (Q2)
C. Where is it located? a. The secretary went to the doctor complaining about Carpal tunnel syndrome. What is hurting her? PLEASE help!!!!
asked by Laruen 
Capacitors
A parallel plate capacitor has area of 2cm^2 and a plate separation of 1mm. Find capacitance.
asked by Anonymous 
Please Proofread Any Suggestions Will Help
Every morning, I drive to work; as I get closer I can hear the cadence calling of all the basic training units on Fort Benning, Georgia. Regardless of what is on the training schedule for the rest of the day, we conduct Army Physical Readiness Training
asked by NICK Exemplification Essy 
life orientation
Five ways in which the human or environmental problem impacts on the community
asked by kidibone 
Physics
A particle has a de Broglie wavelength of 3.30 x 10^10 m. Then its kinetic energy quadruples. What is the particle's new de Broglie wavelength, assuming that relativistic effects can be ignored?
asked by Matt 
chemistry
If 33.0 mL of 0.002 M aqueous H3PO4 is required to neutralize 28.0 mL of an aqueous solution of NaOH, determine the molarity of the NaOH solution.
asked by Anonymous 
spanish
te question is Ella se ____ Julia. We were to pick between llama, llamas, and nombre. I think the answer is llama but a little hesitant on that
asked by m 
Chemistry
The ionisation of water plays an important role in the equilibria of aqueous solutions. Kw= 1.008 x 1014 mol2 dm6 at 298K. (a) Calculate the pH of the following solutions at 298K showing all your working. Assume full dissociation in each case. (i) 0.054
asked by Henry 
geometry
Hexagon A is a regular hexagon. The total length of all the sides of the hexagon is 24 inches. Hexagon A is dilated about its center to create Hexagon B. The length of each side of Hexagon B is inches. By what factor was Hexagon A dilated to create Hexagon
asked by jessica