Questions Asked on
April 14, 2008

Math
What happened when the Crossword Puzzle Champion died?
asked by Matt 
Chemistry
If a copper sample containing some zinc impurity is to be purified by electrolysis, the anode and the cathode must be which of the following? a. anode: pure copper cathode: pure zinc b. anode: pure zinc cathode: pure copper c. anode: pure copper cathode:
asked by John 
chemistry check over work
Naphthalene (C10H8)is a solid aromatic compound often sold as mothballs.The complete combustion of this substance to yield CO2(g)and H2O(l)at 25 ْC yields 5154 kJ/mol. A. write balanced equation for the combustion of C10H8. C10H8+12O2>10CO2+4H2O ΔH
asked by sasha 
Chemistry
If two salts AX and BX2, have the same Ksp values of 4.0x10^12 at a given temperature, then A. their molar solubilities in water are the same B. the salts are more soluble in 0.1 M NaX than in water C. the molar solubility of AX in water is less than that
asked by LT 
Chemistry
what is the molar solubility of lead sulfate in 1.0 X 10^3 M Na2SO4? The Solubility Product Constant PbSO4 Ksp= 1.8 x 10^8 The Ksp expression is: Na2SO4 = [2Na][SO4^2] [2Na]=2x [SO4^2]=x Ksp= 1.8 x 10^8 = (x)(2x) Ksp= 1.8 x 10^8 /4x^3 1.8 x 10^8/4 =
asked by LT 
chem
Briefly explain why the transitions associated with the Lyman series correspond to wavelengths in the ultraviolet region of the electromagnetic spectrum.
asked by natash 
trig help
verify that cos(AB)/cosAsinB=tanA+cotB is an identity
asked by sam 
chemistry
using only the periodic table, write the expected groundstate electron configurations for: a. element number 116 b. an element with three unpaired 5d electrons c. the halogen with electrons in the 6p atomic orbitals
asked by aaloy 
Physics
You want to take a full length photo of your friend who is 2 m tall, using a 35 mm camera having a 50 mm lens. The image dimensions of 35 mm film is 24 mm by 36 mm, and you want to make this a vertical photo in which your friend's image completely fills
asked by J 
physics
A woman finds the front windshield of her car covered with ice at 12.6°C. The ice has a thickness of 4.80 104 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?
asked by Jaime 
Chemistry
If the concentration of a saturated solution of SrCO3 is 0.000040 mol*L^1, what is the value for the solubility product constant of this salt. How do I start this please
asked by LT 
chemhelp
the bright yellow light emitted by a sodium vapor lamp consists of two emission lines at 589.0 and 589.6 nm. what are the frequency and the energy of a photon of light at each of these wavelengths? what are the enegies in kJ/mol
asked by justin 
Atomic physics
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. b. Calculate the wavelength of light emitted with the
asked by Sandhya 
Chemistry
The dissociation for a weak base BOH in water found to be 1.25 x 10^6. What is the concentration of H+ in a 3.2M soluton of BOH.
asked by LT 
Chemistry
Equal volumes of 1 M BaCl2 and 1 M NaSO4 are mixed. What effect will the addition of more Na2SO4 solution have on the concentration of Ba^2+ remaining in solution? *No effect *increase the concentration of Ba^2+ ions *Decreases the concentration of Ba^2+
asked by LT 
Chemistry
What is the OH^ concentraton of a solution that is 0.10M in Na2C2O4? I have a couple of these concentration questions asking different things but I don't know how to do them
asked by LT 
physics
A law enforcement officer in an intergalactic "police car" turns on a red flashing light and sees it generate a flash every 1.5 s. A person on earth measures that the time between flashes is 2.9 s. How fast is the "police car" moving relative to the earth?
asked by rick 
chemistry
use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with
asked by Katie 
Physics check
1)How is displacement different from distance? Under what conditions can an object travel a certain distance and yet its resultant displacement be zero? Displacement is a vector quantity while distance is a scalar quantity. If an object goes roundtrip its
asked by Jon 
Macroeconomics
The following calculations help you see how the ratio of debt to GDP changes from one year to the next. Suppose that in a hypothetical country with a currency called the ducat, debt is equal to 140 trillion ducats and GDP is equal to 100 trillion ducats.
asked by Jenny 
physics
A farm boy studying physics believes that he can fit a 15.0 m long pole into a 12.0 m long barn if he runs fast enough (carrying a pole). Can he do it? Explain in detail.How does this fit with the idea that when he is running the barn looks even shorter to
asked by raks 
Chem II
Ammonia is a weak base. If Ammonium nitrate is added to it, the pH of the ammonia solution will _____________ (increase, decrease, stay the same)
asked by Ken 
english  revise
Where do you normally find information for topics that interest you? how do you know when sources are reliable? Explain: In order to find information for topics that interest me, I will go to the University library. When using different sources such as
asked by rose 
physics
An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^13 W/m2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 7.0 mm and the light has a wavelength of 545
asked by rick 
science(chem)
Can someone tell me if this objective for my lab report sounds alright? The objective of this multistep lab was to ultimately synthesize 4bromo2chloro6iodoaniline through the intermediate formation of acetanilide, 4bromoacetanilide,
asked by ~christina~ 
Chemistry
Which one of the following salts is obtained by the reation of a weak acid with a strong base. MgCl2 NH4F LiClO4 NaCl K2SO3
asked by LT 
Physics
The energy of the nth excited state of a hydrogen atom is proportional to 100  (100/n2). 1) Using this formula, calculate the energy of the first five energy states. 2) How many spectral lines are possible for the transition of a photon in the n= 5 state
asked by CGUFF 
Physics
What does wave interference have to do with the electron energy levels in an atom?
asked by need help :( 
Chem II
Calculate the pH and percent ionization for the solution made up of 0.035 M NH3 and 0.015 M NH4Br.
asked by Ken 
Physics
What evidence can you cite for the wave nature of light? For the particle nature of light?
asked by need help :( 
science
unscrammble the word oucocbitinmulaa
asked by Patty 
Physics check
1)What can you say about the motion of a body if: a. its displacementtime graph is a straight line inclined with the time axis b. its velocitytime graph is a straight line inclined with the same axis. c. its velocity time graph is a parabola A)The
asked by Jon 
PHYSICS
Oil is flowing with a speed of 1.30 m/s through a pipeline with a radius of 0.315 m. How many gallons of oil (1 gal = 3.79 103m3) flow in one day?
asked by Zach 
English expression
Hana Middle School This is our school. It's 37 years old. There are 780 students and 34 teachers. We have a computer center and a library. We have a gym and a music room, too. Our Classroom This is our classroom. There are 40 students in our class. Our
asked by John 
English expression
What sport do you like best? I like rope jumping best. What sports do you like best? I like cricket and dodgeball best. Which sport do you like better, billiards or squash? I like billiards better. Do you play rugby sometimes? Yes, I do. Do you play sports
asked by John 
chemistry
Reaction 1: I2(aq)Cu^+2(aq) Ag^+(aq)Br2(aq) Column 1Column 2Column 3Column 4Column 5 I(aq)XXTT Cu(s)TXTT Ag(s)XXXT Br(aq)XXXX Reaction of metals and solution of ions Reaction 2:
asked by Joseph 
To Kill A MockingBird ..please help.
Hi, in to Kill A mockingbird , can you please help me out, and tell me any significant events that happen in CHAPTER 23? I am suppose to explain why the events , important speeches in Chapter 23 are important. All I can really think of is that Attticus
asked by May 
chemistry
A weak base with a concentration of 1.3 mol/L has a percent ionization of 0.72%. What is the Kb of this weak base? could someone help me with this question or how to get started?
asked by samantha 
Physics
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens. (a) How far must the lens be from the photocells? (b) How tall is the image on the photocells? Is it erect or inverted? (c) A SLR
asked by J 
English
How do you write a acrostic poem?
asked by Aben 
Math
In Music, What Does "Allegro" Mean?
asked by Matt 
Physics
A skier starts at rest on the top of Mt Circular, a strange, smooth, icy hill shaped like a hemisphere. The hill has a constant radius of R. Neglecting friction (it is icy!), show that the skier will leave the surface of the hill and become airborne at a
asked by Courtney 
English
hi i would want to know good websites for research about Mid summer night stream as we are going 2 start reading that book and so my teacher wants a little summary about it??
asked by numz 
chemistry
use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with
asked by Katie 
Chemistry
The Rydberg equation (1=Rni 2–Rnf 2) can be treated as a line equation. What is the value of nf as a function of the slope (m) and yintercept(b)? A. (mb)^1/2 B. (–mb)^1/2 C. (mb)^1/2 D. mb E. –mb^2 F. None of these are correct.
asked by Chris 
Physics
A 22.8 kg turntable with a radius of 47 cm is covered with a uniform layer of dry ice that has a mass of 4.08 kg. The angular speed of the turntable and dry ice is initially 0.52 rad/s, but it increases as the dry ice evaporates. What is the angular speed
asked by Christina 
chemistry
calculate the equilibrium constant for the reactionas written at 940K. NH4Cl>NH3+HCl delta H= NH4Cl 1779, NH3 46, HCl 92 delta s= NH4Cl  682,NH3 192,HCl 187 i don't know how to solve for the equilibrium constant without the concentration of the
asked by david 
Physics
An electron (m=9.11 * 10^31) enters a uniform magnetic field B=1.8T and moves perpendicular to the field lines with a speed v=0.92c. what is the radius of curvature of its path?
asked by Jenish 
organizational theory and behavior
How has learning about Organizational Behavior given you a better understanding of organizations in your community? Has what you have learned about Organizational Behavior increased your interest in a future leadership or management role? Would you now
asked by deshaun 
English
How do you analyze a poem???...i always have trouble trying to understand the poem...especially metaphors because they have a different meaning then what the words means directly.
asked by Vanessa 
BiologySmallpox
Who usually gets smallpox? Who's at risk, age groups or areas of the world
asked by Mike 
chemistry
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.520. If a trial's absorbance is measured to be 0.275 and its initial concentration of SCN– was 0.00060 M, the
asked by david 
WORD PROBLEMS
AND THE LAST TWO ARE THE FOLLOWING: 9. MARTHA LIND RECEIVED ANOTICE SHOWING THAT HER EMPLOYER PAID THESE BENEFITS BASED ON HER 53,000 ANNUAL SALARY:8.7%, REQUIRED TAX BENEFITS, 6%; MEDICAL INSURANCE; 3% PENSION PLAN CONTRIBUTION; 5% VACAION AND HOLIDAY
asked by JESSICA 33 
Chemistry
What is the pH of the solution created by combining 2.00 mL of the 0.10 M base[ammonia] with 8.00 mL of the 0.10 M acid[acid acid]? I tried this problem so many times, but always got it wrong. It's a weak base and acid titration. but i don't know the
asked by HELP Plz 
chemistry
I found a pattern and I was wondering if it applies to all reactions. The more times there is evidence of a redox reaction occuring for an element, the higher this element will be on the list?
asked by Joseph 
literary
My daughter has to write an advertisement using 3 different propaganda techniques. I cannot find a definition or sample of propaganda techniques..can you help?
asked by Mary 
Physics
You want to take a full length photo of your friend who is 2 m tall, using a 35 mm camera having a 50 mm lens. The image dimensions of 35 mm film is 24 mm by 36 mm, and you want to make this a vertical photo in which your friend's image completely fills
asked by J 
Chemistry
All of the following species would be expected to be able to function a Lewis bases EXCEPT a. F b. O2 c. OH+ d. H2O BF3
asked by LT 
Physics check
A boy starts from point A and moves 5 units toward the east, then turns back and moves 3 units toward the west. What is the displacement in the position of the boy? 53=2 2 units east
asked by Jon 
trig
write the expression sin4xsin5x as a sum or difference of trigonometric functions
asked by sam 
calculus
Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(y/3) for y(0)=10 my answer was y=10e^(x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)4 3. dz/dt=te^z for z(0)=0 my answer was
asked by tia 
Physics check
1)The velocity of sound in air is 332 m/s. If the unit of length is km and the unit of time is hour, what is the value of velocity? m/s 2)What conclusions can be drawn if a velocitytime graph is a curve? acceleration is not constant.
asked by Jon 
Chem
In a molecular weight determination, a volume of an unknown gas effused through a small opening in 40 seconds while the same volume of O2 required only 20 seconds for effusion. Calculate the molecular weight of the unknown gas.
asked by Casey 
accounting
a) Use the following data to compute averafe revenues per store, capital spending per new store, and ending inventory per store. b) Assume 200 additional stores will be added by the end of year +1 and assume that each new store will be pen for business for
asked by Bob 
Geometry
Find the radius of a right cone with the slant height 21m and the surface area 168pi m^2
asked by Help me!! 
chemistry
Because solution pH is a measurement of either [H3O+] or [OH] concentration, the acidic or basic nature of the acids and bases used in this experiment can be ascertained by inspecting just the density (electrostatic) potentials from the products (which
asked by David 
History
How did the consumer economy in the late 1800s effect American life?
asked by Anna 
English Grammar
This school building is 37 years old. This is a 37yearold school building. The boy is 13 years old. He is a 13yearold boy. The is 170 cm tall. He is a 170 cmtall boy.  Is each pair the same and grammatical?
asked by John 
Chemistry
How do you calculate the pH, pOH, [H3O] and [OH] for a 0.067 M solution of sodium iodate
asked by LT 
chemistry
hey drbob222 do you think you could help me out with this lab. Lab: Electrolytic Cells Purpose: The purpose of this experiment is to test the method of stoichiometry in cells. Materials: balance steel can tin electrode power source wire lead (x2) tin (II)
asked by unknown 
English Expression
ex) Do you like baseball? Do you like jumping rope? Do you like jumping ropes? Do you like jump rope? Do you like rope jumping? Do you like skipping rope? Do you like rope skipping?  Instead of 'baseball', can we use all the other
asked by John 
english
Although Max bled profusely before he died, there was no blood on the ground where his body was found. Therefore, he was killed somewhere else and brought here after the murder. a) true beyond a reasonable doubt b) probably true c) possibly true or
asked by Karen 
chem
why are the atomic emission line spectra different for each element?
asked by natash 
grammar
could you explain the difference of seen and saw.Thankyou.
asked by janice 
world geography
i need help with world geography lesson from penn foster ezamination number 6648y if anyone has answers please help, thanx
asked by nathan 
maths (is this correct)
calculate the exact value of 4 1/5  (1 1/9 * 3)is it=39/45
asked by marsha 
Math
Franca Traveled 6.8km from one town to another Town. Where might Franca have traveled.
asked by inder 
Physics
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens. (a) How far must the lens be from the photocells? (b) How tall is the image on the photocells? Is it erect or inverted? (c) A SLR
asked by J 
Chemistry
What does the density potential (also known as the electrostatic potential) measure? What do the colors on the images indicate?
asked by David 
chemistry
"Ag(s) reacts with none of the 4 (solutions of Ag^+2, Pb^+2, Cu^+2, Zn^+2}. So Ag(s) goes at the bottom of the table for now although there may be some metals below silver when you finish with the entire table. Cu(s) reacts with (Ag^+ solution) so Cu goes
asked by Joseph 
social studies
List four major events from this lesson! Patriots at War
asked by christian 
english
You expect to get forty miles to the gallon in that? Why, that old wreck has a monster V8; besides, it’s fifty years old and needs an overhaul. a) true beyond a reasonable doubt b) probably true c) Possibly true or possibly false The answer is (C)
asked by Matt 
english
In three of the last four presidential races, the winner of the Iowa Republican primary has not captured the Republican nomination. Therefore, the winner of the next Iowa Republican primary will not capture the Republican nomination. a) true beyond a
asked by Matt 
calculus
from the equation: x^4  i = 0 x^4 = i how do you get: The solutions are the fourth roots of i = cos(pi/2) + isin(pi/2) I don't understand how you get pi/2? please full and detailed explanation please.
asked by Dom 
English grammar
I would recommend parents to use articles that are written by college professors, a doctor in education, or a specialist in child development, since these are more credible articles than articles written by parents or family members.
asked by Bizzy 
Spanish Homework
Estuve trastornado tan cuando mi hermano pidió que el hombre polaco saliera de nuestra casa. Entonces fui abajo al sótano a trabajar en mi preparación. Sin embargo, no era alegre. Deseé levantarme y bailar. Despejé tan mi escritorio, estaba parado
asked by Alex 
algebra1
If there are 700 people in the town, how many people have both cats and dogs? 22% has both cats and dogs. I am having trouble because i keep coming up with 1.54. Just don't seem correct.Help!
asked by deshaun 
WORD PROBLEMS
5. THE UNIT COST OF A BEGINNING INVENTORY OF 405 UNITS IS zzz$15.16. TH EUNIT COST OF THE LAST 600UNITS PURCHASED IS $16.81 . USE FIFO TO FIND THE VALUE OF THE ENDING INVENTORY OF 170UNITS. 6. MXV PRODUCTS USES A COMPUTER PROGRAM TO SCREEN JOB APPLICATION
asked by JESSICA 33 
english
• The article I chose is: how stuff works – communication. The type of introduction that the writer used was to include interesting facts about the subject. He also gave animated illustrations to show how telephone communication works. The kind of
asked by Tom 
trig
3x  y = 4
asked by Wanda 
Maths
Given y2 wirte down the value of y: y2 = 81 y2 = 25 y2 = 16 y2 = 100 y2 = 4 y2 = 16
asked by Rebeca 
chemistry
I need an edible suspension for a project i am doing.
asked by casey 
math
how would I solve 5x+7=42
asked by farah 
algebra 1
I'm having troubles with these problems from a packet I got: 1. 1/x^29 2. 2(x1)^2(x1)1 3. y^2(ab)(ab) 4. c^2+c+1/4 5. (x+1)^23(x1)+2 6. x^49x^2+20 7. y^21/6y1/6 8. n^4+2n^23 Please help. Thanks.
asked by Victoria 
BiologyBacteria
What are the two basic ways that bacteria cause disease? Thanks
asked by Sue 
english
. The number of cellular telephones has increased dramatically in each of the past few years. Therefore there will be even more of them in use this coming year. a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false my answer
asked by Ahish 
SCi
What carbohydrates are, the difference between simple and complex carbohydrates, how sugars are broken down and used in the body, the benefits that carbohydrates provide to the body • Give examples of foods that are considered healthy sources of
asked by Dawn 
WORD PROBLEMS
I JUST NEED HELP IN DECIDING WHICH WAY TO SOLVE. I LIKE TO SOLVE THEM BUT I AM HAVING TROUBLE SETTING THEM UP... 1. THE BOARD GAME SKRIBIN HAS DAILY SALES OF 12UNITS. IT TAKES 28 DAYS TO RECEIVE A NEW SHIPMENT. NO SAFETY STOCK IS PURCHASED. WHAT IS THE
asked by JESSICA 33 
AED
help! Is it best to adjust instruction to teach in accordance with individual learning styles, or should students experience and be encouraged to participate in activities that require learning styles other than those they naturally prefer? In other words,
asked by Dawn 
spell
To be worryless, could mean life itself. Many people struggle through everyday life  Children, Bills, School, but most importantly money. The world has evolved around money, and i wish that people could be worry free, and didn't have to worry about money,
asked by Walker 
Physics
A ball is thrown vertically upward with a speed of 1.53 m/s from a point 4.21 m above the ground. Calculate the time in which the ball reach the ground. I'm figuring I have to do something with 9.80 which is gravity but I don't know what.
asked by Jon 
english  after revision
In order to find information for topics that interest me, I will go to the University library. When using different sources such as website, library and articles, it is very important to know that each source has an author and which one is the most
asked by rose  Ms. Sue 
Spanish
Estuve trastornado tan cuando mi hermano pidió que el hombre polaco saliera de nuestra casa. Entonces fui abajo al sótano a trabajar en mi preparación. Sin embargo, no era alegre. Deseé levantarme y bailar. Despejé tan mi escritorio, estaba parado
asked by Alex 
english literature
i am writing a research paper about JOHN KEATS and his 3 works ( social political religious or any)_ but i didn't find some of the things about him. my question is: WHAT ARE THE SOCIAL POLITICAL AND RELIGIOUS CONTRIBUTION OF JOHN KEATS TO THE ENGLISH
asked by martin 
chem
what colored lines are expected in the atomic emission spectrum for mercury?
asked by natash 
science
the movement of static electricity into an object is a(n)?
asked by sheri 
math
A cylindrical ring of thickness 3.5mm.Each ring has internal diameter 14 mm and external diameter 16 mm.Taking pie=3.14 calculate the volume of maetla in single link chain,writing your answer correc to 3 significant figs.
asked by sascha 
math/trigonometry
solve secx/2=cosx/2 over the interval[0,2pi) without using a calculator
asked by jake 
chemistry
the s.p.h of iron is 0.405 J/gK. how many joules of heat are needed to raise the temperature of 0.105 kg of Fe from 298K to 361.5K
asked by bebo 
mass media
If you have a population of 500,000 people how many to be sample to give a representative profile with only a 5% point margin of error ?
asked by leslie 
statistics
If you have a population of 500,000 people how many to be sampled to give a representative profile with only a 5% point margin of error ?
asked by leslie 
geometry
What are the names of the faces of a pyramid?
asked by Viradis 
Physics
A free nuetron can decay into a proton, an electron, and a neutrino.Assume the neutrino's rest mass is zero, and the rest masses for proton and electron are 1.6726*10^27 kg and 9.11*10^31 kg. Determine the total kinetic energy shared among the three
asked by Jenish 
Math
What happened after Chief Short Cake died?
asked by Matt 
algebra
Create an equation of a nonlinear function and provide two inputs to evaluate
asked by C 
6th grade math word problem
Mrs. Silva has 24 lillies to arrange in equal rows. Name all the possible of number of lillies she could have in each row.
asked by Canyon 
Western Civiliztion
In 1875, which of these four political philosophies best addresses the political realities of Europe? Why?  1. A group of Austrian conservatives, adherents to the principles advocated by Prince Clemens von Metternich: Our
asked by Jarrod 
AP HISTORY
What was the least common and least sucessful form of slave resistance pre civi war?
asked by Alexis 
trig
1tan^2x/ 1cot^2x = 1sec^2 x
asked by traci 
english
. Since the graduates of Harvard, Yale, Princeton, and other Ivy League schools generally score higher on the Graduate Record Examination than students from Central State, it follows that the Ivy League schools do more toward educating their students than
asked by Matt 
english
Michael Jackson has had more plastic surgery than anybody else in California. You can bet he’s had more than anybody in Connecticut! a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false The answer is (C) possibly true or
asked by Matt 
Social Studies
What laws regulate media censorship?
asked by Anonymous 
Science
After replicated a DNA molecule with two strands three times, how many molecules of DNA are formed? Is eight the correct answer?
asked by Kally 
Factoring
(100)d^2(57.3)d= 0 solve for d. yes...I just can't figure out what number I'd use to factor this and it got bumped to the next page. I thought it was an easy question but... Thanks
asked by ~christina~ 
math
Explain how to reflect a polygon over the X axis and the Y axis.
asked by Kayla 
algebra 1
c^2+c+1/4 I don't understand how to do that equation.
asked by Victoria 
math
how do i factorise: a)5a^2b+ab^2 b)9k^21 c)2y^25y+2
asked by margaret 
biology
Can someone help me find information to refute or support that without the invention of the mircscope, the cell theory would not have been possible.
asked by xoliswa 
Physics / Dynamics
An object is 6000 mi from the surface of a 4000 mi diameter planet. If the relative speed is 12000 mi/hr and the surface gravity of the planet is 12.9 ft/s^2, determine the impact velocity at the surface. Given answer: 15460 mi/hr Thanks in advance.
asked by alpha 
chemistry
for the redox k lab there are also two questions.. drbob222 do you think you could help Question: 1. Of the reactions that occurred spontaneously in the individual tables, what types of qualitative changes would you observe that would indicate the reaction
asked by unknown 
english
Relax. The kid’s been delivering the paper for, how long? Three, four years maybe? And not once has she missed us. The paper will be here, just wait and see. She’s just been delayed for some reason. a) true beyond a reasonable doubt b) probably true c)
asked by Matt 
trig
give the exact real number value without using a calculator sin[(cos^1)(1/4)] sin[(tan^1)(3/4)+(tan^1)(12/5)]
asked by billy 
math?? factoring
100N/m d^2  57.3d= 0 sigh...I can't figure out how to find d know it's factoring but as to actual number to factor out...not so sure. Thanks
asked by ~christina~ 
algebra
Create an equation of a nonlinear function and provide two inputs to evaluate
asked by C 
Social studys
Vikings
asked by Vikings 
math
how do i expand and simplify (2x+5) (3x4)
asked by mina 
AP Chemistry
Hey I have the AP Chem test coming up and i was wondering where I could find the answer key to some of the AP Chemistry tests like 1994, 1999, and 2002 MC and FR
asked by Corey 
religion
The basis of Jewish faith is found in which part of the Bible?
asked by Nikki 
Science
How is yeast considered a fungus?
asked by Kathryn 
Math
How could you use mental math to find 3x122?
asked by Chelsea 
english
The annual rainfall in California’s north valley averages twentythree inches. So the rainfall next year will be twentythree inches. a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false The answer is (C) possibly true or
asked by Chris 
AP HISTORY
Who were most slaves in the South owned by?
asked by Alexis 
english
First, it seems clear that even if there are occasional small dips in the consumption of petroleum, the general trend shows no sign of a real permanent decrease. Second, petroleum reserves are not being discovered as fast as petroleum is currently being
asked by Matt 
Maths
The weight of a termite mound (y) in kilograms is measured each month (x) after it was first found. The mound after 1 month is found to be 2 kilograms and after 3 months it is measured at 18 kilograms. It is believed that the model connecting the weight of
asked by TP 
biology
explain why the movement of chlordie ions and water is reduced in a person with cystic fibrosis. please could someone help me! thanks
asked by sam 
Math Help Needed
I need to figure out a pattern (using an algebraic expression) that will get me from: 1 to .01, 2 to .02, 3 to .04, 4 to .08, etc. all the way to 25 to 153,948.16! HELP
asked by Andrew 
math (repost)
if f(x)=2x1 and g(x) 1/2 (x+2) calculate a)f(3) now if 2(3)1=5 how do i find for gf(3)????
asked by cassie 
1984
1.What is Orwell's version of history prior to his own time? My answer: I don't understand this question. 2. How many of Orwell's predictions have come true? My answer: I don't think many of Orwell's predictions have come true. The thought police and the
asked by Christian 
Statistics
If you have a population of 1,000,000 people, how many to be sampled to give a representative profile with only a 5% point margin of error ?
asked by leslie 
statistics
If you have a population of 3,000,000 people, how many to be sampled to give a representative profile with only a 5% point margin of error?
asked by leslie 
algebra
what is the solution to 8/9(b72)
asked by C 
A
What is the translation of: The product of 32% of some number (q represents some number)?
asked by C 
Math
1.5 x 1.5 =
asked by Andre 
english
The New York steak, the Maine lobster, and the beef stroganoff at that restaurant are all exceptionally good. All the entrees are excellent. a) true beyond a reasonable doubt b) probably true c) possibly true or possibly false my answer is "C"
asked by Ahish 
english
When liquor was banned in 1920, hospitalizations for alcoholism and related diseases plummeted; in 1933, when Prohibition was repealed, alcoholrelated illnesses rose sharply again. Legalization of cocaine, heroin, and marijuana would not curb abuse of
asked by Anne 
WORD PROBLEMS HELP
CAN SOMEONE PLEASE HELP ME WITH ASSISTENCE ON THE PREVIOUS PROBLEMS....OR SHOW ME HOW OR WHAT FORMULA TO USE.....ANYTHING IS HELPFU.
asked by JESSICA 33 
College/degrees
what is the difference between an business amdinistration degree and an business mangment degree?
asked by Bryan 
Media help with a reference
I'm currently writing an essay for university but have a slight problem with one of my references. The source comes from a book called Screen Violence which is a collection of essays, edited by Karl French. The piece that I am referencing from is an
asked by Harriet 
math
fatorise: a)x^25x b)x^281
asked by marisa 
math(did i do this right)
did i factorise this correctly?? 8h^24h 2h(4h2) 8h^24h
asked by sam 
mass media
If you have a population of 3,000,000 people, how many to be sampled to give a representative profile with only a 5% point margin of error?
asked by leslie 
spell
I have a question for language arts. My question is that I got this homework saying Each word below is misspelled. Rewrite each word correctly. And the words are rippol_____ sampel_____ rurol______ jewle______ raffel______ plurel______ royle_______
asked by Netanya 
Math
How could you use mental to find 5x306?
asked by Chelsea 
English expression
1. I like fully ripen persimmons. 2. I like wellgrown persimmons. Are they have the same meaning? What is the English word for a persimmon which feels smooth and well ripen so that people can eat with ease? Do you have a special term for that?
asked by John 
english
The sign on the parking meter says “Out of Order,” so the meter isn’t working. a) true beyond a reasonable doubt b) probably true c) possibly true or possible false my answer is "B" please help
asked by Chris 
Social Studies
Did the colony of Virginia want to be free from England?
asked by Kaitlyn 
science
explain the causes, results and strategies of fuelwood crisis
asked by zinhle mz 
math
solve the simlutaneous equation: x^2= 4y x= y+2
asked by jack 
math
simplify: a^2+4a/a^2+3a4
asked by rita 
math
solve the equation 4x+5/4  9+2x/3=0
asked by fran 
math
given that l=2, m=3 and n=7 calculate the value of: lm(mn)
asked by keese 
Math
3x  y = 4
asked by Wanda 
math (did i work this right)
if f(x)=2x1 and g(x)=1/2(x+2) calculate a)f(3) b gf(3) a)f(3)=2(3)1=5 b)gf(3)=1/2(3+2)=3 2(3)1=5
asked by cassie 
mass media
If you have a population of 1,000,000 people, how many to be sampled to give a representative profile with only a 5% point margin of error ?
asked by leslie 
socila studies
the pros and cons of oil issues
asked by mariaya 
math
what is 4.48586766654575855656?
asked by travie