Questions Asked on
November 9, 2011

Chemistry
Classify the possible combinations of signs for a reaction's ∆H and ∆S values by the resulting spontaneity. A) Spontaneous as written at all temperatures. B) Spontaneous in reverse at all temperatures. C) Spontaneous as written above a certain
asked by Jessica 
PROBABILITY MATH
A batch consists of 12 defective coils and 88 good ones. find the probability of getting two good coils when two coils are randomly selected if the first selection is replaced before the second is made. Help me.. since it would be replaced would the answer
asked by HM 
PROBABILITY MATH
From a group of 3 men and 4 women, a delegation of 2 is selected at random. What is the expected number of men in the delegation? Round your answers to two decimal places as needed. Could someone help me with how to do this?
asked by HM 
PROBABILITY MATH
An unprepared student makes random guesses for the ten truefalse questions on a quiz. Find the probability that there is at least one correct answer. Could some one please help me? And explain to me how they got the answer? and is there another way
asked by HM 
Chemistry
Consider these changes. (a) Hg(l)>Hg(g) (b) 3O2(g)>2O3(g) (c) CuSo4*5H2O(s)>CuSO4(s)+5H2O(g) (d) H2(g)+F2(g)>2HF(g) At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In
asked by Anonymous 
calculus
Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)
asked by Courtney 
PROBABILITY MATH
Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A(not B)) Could some one explain this to me and tell me how they got the answer
asked by HM 
Math
Describe how to draw a line that passes through the origin and has a slope of 3/5.
asked by Jane 
Statistics
A box contains 12 lights bulbs, of which 4 are defective. All bulbs look alike and have equal chance of being chosen. 3 light bulbs are selected from the box to check the quality. a. List all the possible outcomes b. find the probability that all 3 are
asked by Yvonne 
math
Jacie is considering a job that offers a monthly starting salary of $3000 and guarantees her a monthly raise of $180 during her first year on the job. Find the general term of this arithmetic sequence and her monthly salary at the end of her first year/
asked by andrew 
calculous
Find the area of the region bounded by the parabola y = 4x^2, the tangent line to this parabola at (4, 64), and the xaxis.
asked by Ryan 
chemistry
which solution has the lower pH? a)0.1 M HCL or 0.1 M HC2H3O2? b)0.1 M NaOH or 0.1 M NH3? c)0.1 M Na2CO3 or 0.1 M NaCl?
asked by denis 
Physics
When the Earth, Moon, and Sun form a right triangle, with the Moon located at the right angle, the Moon is in its thirdquarter phase. Find the magnitude of the net force exerted on the Sun. Find the direction of the net force exerted on the Sun. Give the
asked by Cooper 
Chemistry
Calculate ∆H˚ for the following reaction using the given bond dissociation energies. CH4 (g) + 2O2 (g) > CO2 (g) + 2H2O (g) Bond.......∆H˚ (kJ/mol) OO........142 HO.........459 CH.........411 C=O........799 O=O........498 CO.........358 ∆H˚
asked by Raj 
PROBABILITY MATH
Find the probability of correctly answering the first 4 questions on a multiple choice test if random guesses are made and each question has 5 possible answers. Explain to me the answer?
asked by HM 
Chemistry
Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH > H2O + A^ calculate the pka value of the acid and determine the number
asked by Alex 
Algebra
Financial Project Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement
asked by Torra 
Physics
An equilateral triangle 10.0 m on a side has a 1.00kg mass at one corner, a 2.00kg mass at another corner, and a 3.00kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg mass. Find the direction of the net force acting
asked by Cooper 
Inverse Variation
Help me please.. Explain also :( 1. E is inversely proportional to Z and Z = 4 when E = 6. 2. P varies inversely as Q and Q = 2/3 when P = 1/2. 3.R is inversely proportional to the square of I and I = 25 when R = 100. 4. F varies inversely as the cube root
asked by Elmo Schnittka 
calculus
Find an equation of the tangent line to the curve at (8,0). y=ln(x^2 8x +1)
asked by Alexa 
Math
What is the annual interest rate if $1600 is invested for 6yrs. and 456 in intrest is earned
asked by Zach 
Astronomy
Based on what you learned about light, select all of the correct statements from the following list. The only type of electromagnetic radiation that is actually considered light is visible light. High frequency photons carry more energy than long
asked by Andy 
Applied Decision Methods for Business
. Construct a Gantt chart and project network for the following set of activities, compute the length of each path in the network, and indicate the critical path: Activity Activity Predecessor Time (months) 1 ___ 4 2 ___ 7 3 1 8 4 1 3 5 2 9 6 3 5 7 3 2 8
asked by Zanobia 
Physics
An archer shoots an arrow horizontally at a target 12 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow? (Neglect air resistance.)
asked by Juhmillico 
Calculus
The widths (in meters) of a kidneyshaped swimming pool were measured at 3meter intervals as indicated in the figure. Use the Midpoint Rule with n = 4 to estimate the area S of the pool if a1 = 15.5, a2 = 18, a3 = 17, a4 = 14, a5 = 12.5, a6 = 12, and a7 =
asked by Ethan 
Economics
Say you are the manager of a perfectly competitive firm selling a product. Your business is making a loss because total revenue is less than total costs. What would you doshut down or continue to operate? Use hypothetical numbers to explain. Information
asked by Michelle 
Math, Finance
Parents have set up a sinking fund in order to have $120,000 in 15 years for their children's education. How much should be paid semiannually into an account paying 6.8% compounded semiannually? PMT = FV ____i_____ (1 + i)^n – 1
asked by Debra 
Physics
Suppose a planet is discovered orbiting a distant star with 13 times the mass of the Earth and 1/13 its radius. How does the escape speed on this planet compare with that of the Earth? Ve new  = ve earth
asked by Cooper 
calculus
Let L and M be two perpendicular lines tangent to a circle with radius 6. Find the area bounded by the two lines and the circle
asked by Angelina 
Physics
An astronaut exploring a distant solar system lands on an unnamed planet with a radius of 3800 km. When the astronaut jumps upward with an initial speed of 4.00 m/s , she rises to a height of 0.600 m. What is the mass of the planet?
asked by Cooper 
Algebra
The flower garden has the shape of a right triangle. 5ft of a perennial border forms the hypotenuse of the triangle, and one leg is 1ft longer than the other leg.Find the lengths of the legs.
asked by Kelly 
English
I was referring to my previous sentence: they checked (in) their bags for cigarettes. I urgently need to check these sentences. I believe there are mistakes in the word choice,. Thank you. 1) Another blow (I need a synonym) to traditional beliefs came from
asked by Henry2 
Algebra
At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vicepresident and in the
asked by Monica 
Social Studies 9
PLEASE I NEED HELP, I DON'T GET WHAT THIS QUESTION IS ASKING FOR ? :# Were the sons of liberty justified in their treatment of the loyalists.
asked by Stephanie 
economics
which of the following is not a goal of governmetn programs? A. To enforce private property rights B. To prohibit natural monopolies C. To reduce pollution D. To transfer money from higherincom households to the poorest households E. To maintain price
asked by Anonymous 
geometry
Is this triangle acute, obtuse, or right? Angle R is 82 degrees, Angle S is 56 degrees, and Angle T is 42 degrees
asked by Rose 
calculus
Find the volume of the solid generated by revolving about line x = 4 the region bounded by x = y  y^2 and x = y^2  3
asked by Ryan 
6th grade Math
Light travels about 1 mile in 0.000005 seconds. If a spacecraft could travel at this speed, it would travel almost 10 to the 6th power miles in 5 seconds. About how far would this spacecraft travel in 50 seconds?
asked by Bob 
physics
The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires a gun, she is driven back over the edge and into the sea. Suppose the mass of a bullet is 0.012 kg, and its velocity is +715 m/s. Her
asked by Kelsey 
chemestry
A calorimeter contains 16.0 of water at 15.0. When 1.60 of (a substance with a molar mass of 58.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5. Calculate the enthalpy change, , for this reaction per mole
asked by Anonymous 
English
I checked the sentences myself.There were spelling mistakes to correct. I need to prepare this listening activity taken from a course book (again). I just want to be sure that everything is OK. 1) Travel and expeditions were much in the people’s mind.
asked by Henry2 
chemistry
Consider the following reaction in a closed reaction flask. If 0.600 atm of gas A is allowed to react with 1.20 atm of gas B and the reaction goes to completion at constant temperature and volume, what is the total pressure in the reaction flask at the end
asked by Celeste 
science
Earthquakes occur because of _____. plate tectonics cracks in the crust landslides volcanoes
asked by sam 
Math
1/3as many dimes as nickels. 3 more quarters than nickels 17 coins in all
asked by Siraj 
Mathematics
If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
asked by Mikie 
physics
A gymnast weighing 72 kg hangs from a cross bar. His coach pushes him forward with a force of 38 N and backward with a force of 20 N. The upward reaction force on the gymnast is 750N. Calculate: i). The resultant (net) force on the gymnast and ii). The
asked by brighton 
Organic Chem
The following reaction is a singlestep, bimolecular reaction: CH3Br + NaOH > CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.150 M, the rate of the reaction is 0.0090 M/s. a) what is the rate of the reaction if the concentration of
asked by Bryan 
Chemistry
A reaction has a standard freeenergy change of 11.80 kJ/mol (2.820 kcal/mol). Calculate the equilibrium constant for the reaction at 25 degrees C. Please help!
asked by Tanisha 
Physics.. please help!!!!!
A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. What is the net external force in the x direction? y direction?? Also.... What is the magnitude of
asked by Elle 
Economics
The index most widely used by the government and the private sector to measure changes in the cost of living is the (a) the GDP deflator, (b) Producer Price Index, (c) The interest rate, (d) Consumer Price Index
asked by JJ 
physics
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. It is observed that the maximum speed of the bunch of bananas is 39.6 cm/s. What is
asked by kate 
Physics
A communications satellite with a mass of 450 kg is in a circular orbit about the Earth. The radius of the orbit is 2.9×10^4 km as measured from the center of the Earth. Calculate the weight of the satellite on the surface of the Earth Calculate the
asked by Cooper 
Mathematics
A half of what John's age was 4 years ago is equal to one third of what it will be in 5 years' time. How old is John now? Explain your workings
asked by Adam 
Stats
HarleyDavidson motorcycles make up 14% of all the motorcycles registered in the United States. You plan to interview an SRS of 600 motorcycle owners. a.) What is the sampling distribution of the proportion of your sample who own Harley's? b.) How likely
asked by Manda 
physics
A golf ball is drive. With an initial velocity of 25 m/s at an angle of 35 degrees with the horizontal find the maximum height the ball reaches above its original height
asked by Anthony 
Math
What does it mean to refer to a 20 inch TV or a 25 inch tv set? Such ubits are refer to the diagonal of the screen. A 25 inch TV set also has a width of 20 inch what is its height? would I multiply 20 by the height to get the diagonal? I think the answer
asked by Allison 
physics
An Atwood's machine consists of blocks of masses m1 = 13.0 kg and m2 = 19.0 kg attached by a cord running over a pulley as in the figure below. The pulley is a solid cylinder with mass M = 7.30 kg and radius r = 0.200 m. The block of mass m2 is allowed to
asked by Anonymous 
chemistry
A student measures 0.2452 g of a monoprotic solid acid, and dissolves the solid in water to make 100.0 mL of solution. the entire solution is titrated to a phenolphthalein endpoint with 45.06mL of 0.1725M KOH. A. what is the molarity of the acid solution?
asked by ali 
math
The height of an object thrown upward with an initial velocity of 96 feet per second is given by the formula h = 16t2 + 96t, where t is the time in seconds. How long will it take the object to reach a height of 144 feet?
asked by Emily 
Science
What instrument are used to measure mass?
asked by Laruen 
Sport
What are the reasons for the olympic games to be largest of all sporting events?
asked by Lorry 
Sport
Why Olympia selected to hold at the ancient Olympic Games?
asked by Emily 
Calculus
Consider f(x)=200+8x^3+x^4. find the intervals on which function is increasing or decreasing, the local max and minimu values, the intervals of concavity and the inflection points
asked by Ashley 
Social Studies
The interaction of private companies trying to make the greatest profit and customers trying to get the best deal is called A) competition B) blind faith C) the invisible hand D) the zero sum game Blind faith means belief without true understanding so I'm
asked by Courtney 
physics
Two balls are approaching each other headon. Their velocities are +9.30 and 12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) (a) They have same
asked by Taylor 
math
For every 7 blue chips there are 3 red chips. In a pile of 320 blue and red chips, there are ___ more blue chips than red chips.
asked by Anonymous 
math
if lynns age is 8 years less than 15 times the age of her neice Elizabeth, if the sum of their ages is 24, what is elizabeths age?
asked by sharee 
physics
a 60 kg student jumps from a table 1.2m high. When his feet hit the floor he bends his knees so that the stopping time is .06s. What is the average force that the floor exerts on his body in order to stop him?
asked by Paul 
maths
use square nombers to determine at least 3 pattern for the first five square nombers.
asked by kell kell 
math
A parallelogram ABCD has lengths of sides and angles given below. Find the length of the diagonals AC and BD. (Round your answers to two decimal places.) AB = DC = 6 and AD = BC = 5, angleA = 40°
asked by deanna 
english
which of the following is not Abrahamic religion? a. christianity b. buddhism c. judaism. d. islam
asked by tracy 
math
How to show that 2nCn
asked by jiya 
Chemistry
CH3CH2CH(BR)CH=C(BONDED TO A METHYL ON ONE SIDE AND AN ETHYL ON THE OTHER)
asked by Jay 
spanish II
Complete with the correct form of the indicated verb: Los alumnos ____ cuando la profesora habla. (dormir)
asked by Bob Randy 
Chemistry
draw the alkyne formed when 3,4dichloroheptane is treated with an excess of a strong base such as sodium amide. I got CH3CH3C(triple bond)CCH2CH3 but was told it was the wrong answer
asked by Jay 
math
The allcity band is made up of students from 3 schools. bayside, lincoln, and hendricks. 20 students are in the allcity band. 5 students come from bayside. lincoln has 1 more student in the band than hendricks. how many students in the allcity band come
asked by dimitri 
English
Could you please check these sentences for me? Thank you. 1) She doesn't want me to watch it because she thinks it is a programme with no ideas, in which characters often shout at one another. 2) She gets on well with her younger brother. 3) They don't go
asked by Henry2 
physics
a baseball (m = 153 g) approaches a bat horizontally at a speed of 41.0 m/s (92 mi/h) and is hit straight back at a speed of 45.8 m/s (102 mi/h). If the ball is in contact with the bat for a time of 1.05 ms, what is the average force exerted on the ball by
asked by Kelsey 
maths
a conical tank open at the top is 4m and has a top radius of 1m its filled with water and after 2 hours, the depth of water dropped to 1m due to evaporation.set up a differential equation for the depth of water as a function of time.set up an equation for
asked by apollo 
math..
so is the remainder 1, when 2 raised to power 2003 is divided by 17?
asked by ss.. 
physics
a ball takes 22 seconds to reach the ground from a height.calculate from what height it dropped?.
asked by brighton 
criminal justices
what are current parole and mandatory release policies
asked by Anonymous 
PROBABILITY MATH
From a group of 3 men and 4 women, a delegation of 2 is selected at random. What is the expected number of men in the delegation? Round your answers to two decimal places as needed. Could someone help me with how to do this?
asked by HM 
PROBABILITY MATH
Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A= event a diamond is selected B=event a club is selected Determine P(A(not B)) Could some one explain this to me and tell me how they got the answer
asked by HM 
physics
a boy drops a rock off a cliff. how fast will it be traveling 2 seconds after he drops it?
asked by braandon 
mathematics (kindly help)
the average of first four numbers in a GP is 140. find the ratio.
asked by ss.. 
computer
2. _____is applications software designed to help users be more efficient. (Points: 5) a.Assistance software b.Efficiency software c.Productivity software d.Software suites is it D
asked by john 
computer
What type of software is provided with the expectation that the users will change it to meet their particular needs? (Points: 5) Commercial Software Open Source Software Public Domain Software Shareware is it "Open source software" im confused
asked by john 
health, safety, and nutrittion
the children in your class are working on an art project thar requires them to use a standard hair dryer to produce a particular effect. of the following locations, which one would be the safest place to put the hair dryer while the children are working on
asked by Alana 
math
f a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = 9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to
asked by tina 
Grammar
In the following sentence, is the word empty an adjective? It seems like it would be a noun/direct object The same with this sentence: The good bike was expensive. Is expensive a noun/direct object, or an adjective?
asked by Lisa 
calculus
Find the number b such that the line y = b divides the region bounded by the curves y = 16x2 and y = 9 into two regions with equal area. (Round your answer to two decimal places.)
asked by Courtney 
computer
A collection of integrated software is called a software: (Points: 5) congregation. family. office. suite. im confused about this one i think its D
asked by john 
calculous
Find the area of the region bounded by the parabola y = 4x^2, the tangent line to this parabola at (4, 64), and the xaxis.
asked by Ryan 
physics
Could you change the drawing in Figure 15.6 to make it illustrate the heating of air when it is compressed? Make a sketch of this case
asked by yupi 
Science
Does intensity increase as amplitude increases? (in reference to SOUND WAVES) Or does it decrease? I'm so confused now. I wrote that loudness, energy and intensity inreases as amplitude increases. Am I right? thank you.
asked by Lola 
geography
what is the marcellus shale ? tell me in your own words.
asked by lola 
Business
I am suppose to describe what style of decisionmaking my organization is; but I will be honest, I am not a business major, and this material confuses me. When looking at the company i work for, I recognize that they in the past relied on benchmarking, but
asked by Jace 
omputer
The process called __________ marks a particular part of the document for special processing. (Points: 5) blocking editing identifying selecting is it D? im confused betweem B n D
asked by john 
math
4n+8=9n7
asked by gage 
Grammar
What is the common nouns & proper nouns in these sentences. 1. Long ago there was a thief in England named Robert. 2. They robbed only rich men. 3. The stolen money was given to anyone who was poor. 4. He was known everywhere as Robin Hood. 5. No one was
asked by Medy 
Chemistry
Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.
asked by Hannah 
science
What elements does the compound MgCL2, magnesium chloride, contain? A. Chloride only B. Magnesium only C. M
asked by stephanie 
Biology
Which of the following would increase the chance of a successful infection? A. The host has a strong immune system. B. The pathogen is very virulent. C. The pathogen population at the infection site is small D. A and B E. A, B, and C
asked by Sammie R 
Comprehension
The sweater looks best on you is the red one. Which pronoun do I use
asked by Daniel 
English
A good writer makes events in a story occur plausibly. The action should be consistent with the characters; if the author forces them into uncharacteristic behavior in order to advance the plot, the story will seem artificial. In "Thank You, M'am, " by
asked by Dylan 
Calculus
Show that limit as n approaches infinity of (1+x/n)^n=e^x for any x>0... Should i use the formula e= lim as x>0 (1+x)^(1/x) or e= lim as x>infinity (1+1/n)^n Am i able to substitute in x/n for x? and then say that e lim x >0 (1+x/n)^(1/(x/n)) and then
asked by Frederick E. 
Social Studies
Im having trouble understanding what is China's FDI. Does anyone have a definition for it?
asked by Andy 
Algebra 1
Tim and Kim are twins. At birth, Kim weighed 3 pounds more that 2/3 of Tim's weight. If Kim weighed 6 1/2 pounds at birth,how much did Tim weigh at birth?
asked by Mercedez 
English Help Please Due at 8am
Please proofread for any errors. If you see any please correct them. Thank you. Obesity is one of the major causes of health problems in the United States. Research has been done about this topic for many years. It is more common in the United States
asked by Angela 
JavaScript
I need help these javascript exericses: Input: A text string, using prompt. Output: Either "Valid name" or "Invalid name", depending on whether the input names fit the required format, which is Last name,first name, middle initial where neither of the
asked by Mike Moskvich 
Math
1/3as many dimes as nickels. 3 more quarters than nickels 17 coins in all
asked by Siraj 
Blue Planet
Wind and the surface ocean currents it drives are both strongly influenced by the Fill in the Blank 01, which makes them curve from a straight path as they move over the Earth’s surface. They constantly veer to their Fill in the Blank 02 in the northern
asked by Loi 
Logic Formal Proof
I need to solve a proof and I cannot figure it out. The instructions say only that I will have to use subproofs within subproofs. Premises: A or B A or C Conclusion: A or (B and C)
asked by Megan 
Math
Use the pattern "1 less than 3 times the number." Start with the number 5. What is the 4th number in the pattern?
asked by Lea 
history JFK
How did the media help kennedy win the presidential election against nixon can someone help me with at least some facts
asked by helen 
calculus
Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the halflife of
asked by John 
English
Thank you very much. I have a few other doubts concerning a paraphrase. Could you please check it? 1) He thinks that even the clear water of the ocean (from Neptune’s ocean?) will not be able to clean his hands and that the blood he has on them will
asked by Henry2 
Sport please help me i have a test 2morrow
What are the reasons for the olympic games to be largest of all sporting events?
asked by Emily 
physics
In the following diagram, the hanging mass is 3.5kg, and the box has a mass of 1.5kg. If the force of the box with the surface is 0.80N, a) find the acceleration of the masses b)determine the force of tension in the string The diagram shows a box on a
asked by codyramsz 
Western Civ
Help! Describe the evolutionary account of the emergence of Israelite religion paying particular attention to the ideas of covenant, law, prophets, morality, relations with Canaanite culture, and other themes you deem significant. Also explain how Jewish
asked by Sara 
middle school math
If the numerator and the denominator of a proper fraction are increased by the same amount, is the new fraction greater than, equal to, or less than the original fraction? Is this correct... it would be equal to because you are increasing both the
asked by liz 
8th grade math
It takes Bob five minutes to saw a board into three pieces. How long would it take him to saw a board into nine pieces? HINT: The answer is NOT fifteen minutes.
asked by Anonymous 
physics
A roller coaster has a loop the loop with a loop radius of 14.5 m. What is the minimum speed that the cart must have so that unconstrained riders do not fall out when the cart is upside down at the top of the loop? What condition on the riders is met at
asked by Jacky 
physics
Block A has a mass of 6.07 kg and is on a rough incline of 12.5o to the horizontal. Block B has a mass of 4.82 kg and the coefficient of kinetic friction between Block A and the plane is 0.268. What is the acceleration of the blocks? What is the tension in
asked by Yul 
physics
If a vector that is 1cm long represents a velocity of 10km/h, what velocity does a vector 2cm long drawn to the same scale represent? An airplane has an airspeed of 100km/h north. If there is a 30 km/h tailwind, what is its groundspeed?
asked by Paulina 
Physics
Problem 17.8 Light from a sodium lamp (wavelenght = 598) illuminates two narrow slits. The fringe spacing on a screen 150cm behind the slits is 4.0 mm . Part A  What is the spacing (in mm ) between the two slits? Express your answer using two significant
asked by Paige 
Physics
Problem 17.11 Light from a heliumneon laser (wavelenght = 633 nm) is used to illuminate two narrow slits. The interference pattern is observed on a screen 3.0 m behind the slits. Thirteen bright fringes are seen, spanning a distance of 52 mm . Part A 
asked by Paige 
physics
Suppose you increase your walking speed from 1m/s to 3m/s in a period of 1s. What is your acceleration? a:2m/s b:5m/s c:4m/s d:3m/s
asked by Anonymous 
Statistics
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24hour cycle of sleeping and waking—even if they are not exposed to the usual pattern of
asked by DT 
physics
Suppose you increase your walking speed from 1m/s to 3m/s in a period of 1s. What is your acceleration? a:2m/s b:5m/s c:4m/s d:3m/s
asked by ashley 
physics
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (b)
asked by jim 
math
if a trapezium has a height of 2 m, one side of parallel two sides is 40 m what will be the measurement of other parallel side?
asked by Diana Chakraborty 
geometry
A kindergarten school has square mats in two colors, red and blue. The ratio of the perimeter of the red mat to the perimeter of the blue mat is 1 : 2. The area of the red mat is blue mat is 9 square feet. What is the area of the red mat?
asked by vanessa 
physics
A person lifts a 4.4 kg cement block a vertical distance of 1.30 m and then carries the block horizontally a distance of 13.50 m. (a) How much work is done by the person in the process?
asked by Anonymous 
math
Gloria talked on her cell phone for 320 minutes the first month, 243 minutes the second month and 489 minutes the third month.Her payment package does not allow her to pay per minute;she can only buy packages.If she has to pay $25 for every 200 minutes,how
asked by phillip 
Math
Leroy ran a total of 15 miles last month. He ran 5/8 mile each day. How many days did he run?
asked by Anon 
Algebra 1 (HELP PLEASE!!)
Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?
asked by HAHAHAHAHA 
statisticsmath
The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed. (a) What percent of students earned a score between 50% and 70%? ( /2)
asked by Noelle 
algebra
Multiply , then simplify 5 sqrt:75  7 sqrt:3
asked by Bill 
SciencePlease help
Can someone tell me what this question means I don't understand it: Violent weather  thunderstorm Why must Charge Separation be tremendous prior too the occurrence of lightning?
asked by Mike 
Math
Vicky uses 1 2/3 cup milk for a muffin recipe. If she wants to make 3 times the amount of muffins, how much milk will she use?
asked by Anon 
algebra
Simplify by removing factors of 1: 9t^2+9t/36t^2+81t
asked by Katy 
Socials Crosswords
Canada and the Twenties... New form of signage? It's 4 letters, and the second letter is E. Leader in the Winnipeg General Strike? 3 letters, and the last letter is U. Canada becomes involved in this international group in the 20's 6 letters, and the last
asked by Anonymous 
Chemistry
Predict whether the following reactions will be exothermic or endothermic A.] N2 (g) + 3H2 (g) > 2NH3 (g) B.] S (g) + O2 (g) > SO2 (g) C.] 2 H2O (g) > 2 H2 (g) + O2 (g) D.] 2 F (g) > F2 (g) Bond ________ ∆H˚ (kJ/mol) HH _________ 432 N(triple)N
asked by Matt 
algebra
Find all numbers for which the rational expression is underfined: r^24r?r^24r
asked by Jason 
Algebra
Multiply and simplify (8v+4)(4x^2+9x+4)
asked by Logan 
Algebra
Solve sqrt:9x+55=x+5, Simplify and use comma to separate the answers
asked by Chris 
Algebra
Add, simplify if possible 4y/y^29 + y/y3
asked by Chris 
Algebra
Solve and simplify: x^2+14x4=0
asked by Chris 
Physics
In each hand you hold a 0.15 kg apple. What is the gravitational force exerted by each apple on the other when their separation is 0.25 m? What is the gravitational force exerted by each apple on the other when their separation is 0.50 m?
asked by Cooper 
Chemistry
If an atom gains energy, is it in a more stable or unstable state?
asked by Andres 
Social Studies 9
why do you think lawyers in land claims trials refer to the royal proclamation of 1763 more then 200 years . PLEASE PLEASE I NEED IT BY TOMORROW . !!!
asked by Stephanie 
3rd grade math
looking at the table of 9's facts. do you see another number pattern in the multiples of 9? explain.
asked by boss 
Math
liz earns a weekly salary of $459 and $20 per hour for each overtime hour she works. this week her total pay including salary and overtime pay was $559. write an equation to represent this situation. how many hours of overtime did liz work?
asked by Angie(: 
English
I left out the following sentences. Thank you. 1) My bed is next to the door against 2)Along the wall opposite the window there's a bookshelf. The children are playing happily. 3) I always do my homework carefully. 4) The students are behaving very badly.
asked by Henry2 
physics
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 210 N applied to its edge causes the wheel to have an angular acceleration of 1.161 rad/s2. (a)
asked by Anonymous 
math
find the sum of the square of 3 1/1 and cube of 3/2
asked by mj 
Physics
Gravity on Titan Titan is the largest moon of Saturn and the only moon in the solar system known to have a substantial atmosphere. Find the acceleration due to gravity on Titan's surface, given that its mass is 1.35 X 10^23 kg and its radius is 2570 km.
asked by Cooper 
Physics
Calculate the rotational inertia of a wheel that has a kinetic energy of 41.6 kJ when rotating at 264 rev/min.
asked by Emily 
English
Could you please check these other sentences I left out? (The first refers to my previous post). Thank you. 1) This is a nonsense. She admits being guilty but then she says she would be ashamed of having a coward's heart (by not admitting her guilt?)
asked by Henry2 
reading
Is flying, cried, clapped, try, shook are consonant clusteres
asked by ashley 
Physics
The largest moon in the solar system is Ganymede, a moon of Jupiter. Ganymede orbits at a distance of 1.07 X 10^9 m from the center of Jupiter with an orbital period of about 6.18 X 10^5 s. Using this information, find the mass of Jupiter.
asked by Cooper 
physics
Pleaseee help explain how to draw the free body diagrams for this problem!!! Two blocks with masses m1 = 10.9 kg and m2 = 79.3 kg, shown in the figure (in the figure the 79.3kg block(m2) is on a flat surface, the 10.9kg(m1) block is pinned against the
asked by dave 
Math
three friends each own land in the same town. Miguel owns 71/2 acres. Jorge & Juanita own the same number of acres. if the friends own 20 1/3 acres altogether, how many acres do Jorge and Juanita owns?
asked by Anon 
English
I forgot to add this sentence. I'm unsure on the use of the preposition "in". Do you think I can omit it? The new parents checked (in) their bags for cigarettes and listened to their songs to see if they contained bad language.
asked by Henry2 
Physics
Two 0.53g basketballs, each with a radius of 17 cm, are just touching. How much energy is required to change the separation between the centers of the basketballs to 1.1 m? (Ignore any other gravitational interactions.) How much energy is required to
asked by Cooper 
LA
why does prince humperdink have to look for a bride in The Princess Bride?
asked by Nicole 
Biology
What is the difference between beta and alpha glucose.
asked by Debe 
Physics
Suppose one of the Global Positioning System satellites has a speed of 4.50 km/s at perigee and a speed of 3.52 km/s at apogee. If the distance from the center of the Earth to the satellite at perigee is 2.21×104 km, what is the corresponding distance at
asked by Cooper 
writing
I AM ONLY ASKING FOR YOU TO HELP WITH EDITING IT AND GIVE CONSTRUCTIVE CRITICISM. i AM LOOKING FOR STUFF LIKE WHAT I HEADING IN THE RIGHT DIRECTION , SPELLING ERRORS , ETC I chose the article by John H. Banshaf III, “Lawsuits against FastFood
asked by Tasha 
Math
If interest is compounded monthly at 8% per year for 10 years, explain how to find the number of compounding periods and the interest rate per compounding period.
asked by Faith 
statistics
space shuttle astronauts each consume an average of 3000 calories per day. one meal normally consists of a main dish, a vegetable dish, and 2 different desserts. the astronauts can choose from 11 man dishes, 8 vegetable dishes, and 12 desserts. how many
asked by kerri 
Algebra
During the first part of a trip a canoeist travels 49 miles at a certain speed. The canoeist travels 25 miles on the second part of the trip at a speed of 5mph slower. The total time for the trip is 5hrs. What was the speed on each part of the trip?
asked by Kelly 
PROBABILITY MATH
A bag contains 10 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are the same color? Round your answer to 3 decimal places.. Help me find the answer. Is there
asked by HM 
english
why do u think Edwards felt it was necessary to terrify his puritan audience into action?
asked by anna 
english
I have to write a speech about recycling can you help me?
asked by rimy 
Math
Main Street can hold four houses. About how big would one house be?
asked by Mike 
statistics
suppose you just received a shipment of 13 tvs. 3 of them are defective. if 2 tvs are randomly selected compute the probability that both tvs work and what is the probability at least one doesn't work? answer as a fraction in simplified form
asked by kerri 
math HELP FAST PLEASE
sal's movie rental club membership costs $11 per month. with a membership, each movie costs $2. sal's monthly movie rental charge was $23. how many movies did sal rent?
asked by Anon 
Math HELP FAST PLEASE
liz earns a weekly salary of $459 and $20 per hour for each overtime hour she works. this week her total pay including salary and overtime pay was $559. write an equation to represent this situation. how many hours of overtime did liz work?
asked by Anon 
statistics
about 11% of the population is nervous around strangers. if 2 people are randomly selected, what is the probability that both are nervous and strangers? what is the probability that at least one is nervous around strangers?
asked by kerri 
precal
Find the components and so that fog =H . H(x)=log_3e^x
asked by tina 
Math HELP FAST PLEASE
chris has some rice cakes and 1 granola bar as a snack. the snack contained a total of 560 calories. if the granola bar had 120 calories and each rice had 40 calories, how many rice cakes did chris have? explain
asked by Anon 
math HELP FAST PLEASE
bella baked 6 dozen cookies. she wants to keep 1 dozen and give the rest to 20 friends. she wants to give an equal number of cookies to each friend. how many cookies does each friend get? justify your answer.
asked by Anon 
Physics
An equilateral triangle 10.0 m on a side has a 1.00kg mass at one corner, a 2.00kg mass at another corner, and a 3.00kg mass at the third corner. Find the magnitude of the net force acting on the 1.00 kg mass. Find the direction of the net force acting
asked by Cooper 
Organic Chemistry
What is the mechanism for the removal of bromine from dibromocholesterol using Zinc and acetic acid?
asked by Tom 
chemistry
In a titration experiment, 22.00mL of a NaOH solution are required to neutralize 24.02 mL of a 0.1094 M HCL solution. what is the molarity of H+ in the HCL solution? (same as the molarity of HCL)
asked by sari 
Social Studies 9
PLEASE I NEED THIS BY TOMORROW!!!. why do you think lawyers in land claims trials more then 200 years after it was proclaimed . NO LINKS PLEASE.
asked by Stephanie 
math
Simply: (a) Four multiply by square root of seven open bracket two multiply by the square root of three plus three multiply by the square root of six minus the square root of seven close bracket. (b) open bracket three multiply by the square root of seven
asked by lupupa 
math
A piece of paper is 280 millimeters long and 200 millimeters wide. You want to draw a grid on the paper so that there is a whole number of squares on the paper. What are the possible sizes of thet is the largest possible squares?
asked by unknown 
science
how does the wind blow around high and lows along and near the surface in the northtern hemisphere?
asked by danielle 
math
what must be added to 6 3/5 to produce 3 5/6?
asked by kristeen 
math
The greatest common factor of two numbers is 5. What could the two numbers be?
asked by unknown 
English
What are the ways of how to derive words into noun?
asked by laniie 
Physics help
A particle moving along the yaxis has the potential eneryg function U = 6 * y3 J where y is in m. What is the ycomponent of the force on the particle at 0 m? What is the ycomponent of the force on the particle at 9 m? What is the ycomponent of the
asked by Me 
Mathematics
If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
asked by Kevin 
Math
How do you simplify the radical 4sqrt(128 n^8)
asked by Naty 
Statistics
Ticket sales for opening night of a movie have a mean of $2100 with a standard deviation of $450. Assume these ticket sales follow a normal distribution. If a movie is selected randomly, what is the probability that opening night ticket sales are more than
asked by Joe 
chemistry
in a exothermic reaction temperature changed from 30 to 43, reasons why I got those answers
asked by Jake 
Stats
Tonya wants to estimate what proportion of the students in her dormitory like the dorm food. She interviews an SRS of 50 of the 175 students living in the dormitory. She finds that 14 think the dorm food is good. a.) What population does Tonya want to draw
asked by Manda 
9th grade algebra
h(t)=16t+64t what does each zero of this !@#$%^&tion represent
asked by Anonymous 
Physics
A flywheel with a diameter of 2.45 m is rotating at an angular speed of 74.1 rev/min. (a) What is the angular speed of the flywheel in radians per second? (b) What is the linear speed of a point on the rim of the flywheel? (c) What constant angular
asked by kyle 
physics
If an airplane propeller rotates at 1570 rev/min while the airplane flies at a speed of 333 km/h relative to the ground, what is the linear speed of a point on the tip of the propeller, at radius 1.97 m, as seen by (a) the pilot and (b) an observer on the
asked by kyle 
CHEMISTRY
Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH > H2O + A^ calculate the pka value of the acid and determine the number
asked by Alexander 
precalculus
find the component f and g so that fog =H H(x)=log3 e^x
asked by tiona 
math
boxes are stacked one on top of the other. you paint only the sides of each box not top or bottom, but will paint the top at the end of the stack how many faces does he paint in a stack of three boxes?
asked by SLb 
english
so apparently my comparison is suppose to be written in formal and not in first person. so my first sentence is not right.how can i rephrase "Miley Cyrus song "The climb" is not only one of my favourite songs, but so it Katy Perry's song"firework? or just
asked by lalala 
statistics
A psychologist wants to estimate the variance of employee test scores. A random sample of 18 scores had a sample standard deviation 10.4. Find a 90% confidence 2 interval for the population variance. What assumption, if any, have you made in calculating
asked by Janelle 
Algebra
Ms Newton's class took the same test as Mr. Euclid's students. Ms. Newton's class has 20 students, and the average(mean) test score was 90. The average of Mr. Euclids class was 80. If you combine both classes the average score on the test is 85. How many
asked by Kahlil 
Physics
A 2.9kg 12cmradius cylinder, initially at rest, is free to rotate about the axis of the cylinder. A rope of negligible mass is wrapped around it and pulled with a force of 20 N. (a) Find the magnitude of the torque exerted by the rope. (b) Find the
asked by Kayla 
Mathematics
If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
asked by Jessica 
geography
why is Marcellus Shale important?
asked by lola 
English
I was wondering what you all may think about video games and their effects on children playing them? Are the children becoming more violent? What do these games do t a child's psyche?
asked by Benjamin 
Stats
Which of the following would be closest to a normal distribution? a.) The sampling distribution of the average weight of 40 eggs randomly selected from the stock at the High Street Kroger's grocery? b.) The sampling distribution of the average weight of 4
asked by Manda 
physics.pls help
Participants in a road race take water from a refreshment station and throw their empty cups away farther down the course. If a runner has a forward speed of 6.20m/s, how far in advance of a garbage pail should he realease his water cup if the vertical
asked by ted 
phys
Doug pushes a 4.65 kg crate up a 2.00 m high 13.0° frictionless slope by pushing it with a constant horizontal force of 35.8 N. What is the speed (in m/s) of the crate as it reaches the top of the slope assuming that the local acceleration due to gravity
asked by tc 
physics
A 0.5 kg football is kicked with a speed of 15 m/s. A goalkeeper catches the ball and brings it to rest in 0.02 seconds. What is the impulse delivered to the ball and the average force exerted on the goalkeeper?
asked by Anonymous 
statistics
Help!!!!!! A confidence interval estimate for the population mean is given to be (39,90, 48.11) If the standard deviation is 11.473 and the sample size is 52 determine the maximum error of the estimate. determine the confidence level used for the given
asked by amy 
social civics
true or false the united states gained territory in the caribbean sea as a result of the spanish american war
asked by Anonymous 
Pre Algebra
I am having problems with inequality problems. The opposite of g is at least 5. Write an inequality and solve.
asked by Roz 
critical thinking
Corporate power affects the dissemination of news by: Answer advertising getting big business presented favorably preventing conflicting viewpoints from being expressed )) my answer getting big business presented favorably
asked by Anonymous 
Stats
A large company has found that 40% of it employees own their own homes. a.) If we randomly select a sample of 20 employees, what is the probability that the sample proportion that own their homes is over 50%? b.) If we randomly select a sample of 40
asked by Manda 
English
Is it a mistake if I include "in", then? Thank you.
asked by Henry2 
Algebra
7.5+y
asked by Kevin 
College Statistics
A random sample of greeting cards is a mean value of $2.55 and a standard deviation of $0.44 So construct a 95% confidence interval estimate of the mean value of all cards in the store's inventory. So if the 2500 cards in the inventory then how are the
asked by Vicki 
Algebra
7.5+y
asked by Kevin 
math
22. Your class hopes to collect at least 325 cans of food for the annual food drive. There were 135 cans donated the first week and 89 more the second week. a. Write an inequality that describes this situation. Let c represent the number of cans of food
asked by ooooo 
math
What are the solutions of the inequality in questions 12? 1.  5(2x+2)  10x  17 (1 point)
asked by ooooo 
english 2
WHAT INFERENCE CAN YOU MAKE FROM THE FACT THAT IT IS FORBIDDEN TO GO TO THE PLACEBY THE WATER OF BABYLON
asked by emily 
Chemistry
Is the formula for zinc hydroxide ZnOH2
asked by Rose 
Algebra
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 37 said they drove alone. 38 rode in a carpool. 25 rode public transportation. 6 used both carpools and public transportation. 10 used both a
asked by Monica 
english
can anyone please let me know my grammatical mistakes in this paragraph: Presently, I am pursuing diploma in medical administrative assistant from Penn Foster. Since last month I have been looking for job in administration department in a hospital, so I
asked by louise 
Algebra  Please HELP
During the first part of a trip a canoeist travels 49 miles at a certain speed. The canoeist travels 25 miles on the second part of the trip at a speed of 5mph slower. The total time for the trip is 5hrs. What was the speed on each part of the trip?
asked by Kelly 
critical thinking
Often the press can report political spin without analyzing it to do which of the following? Answer separate lies from denials find the new and unusual separate fact from fiction (( not sure but i think its this one)) separate leaks from fact
asked by Anonymous 
Zoology
What are the two most diverse animal phyla? Arthropoda and.....?
asked by Jill 
Organic Chemistry I LAB
why would 4methyl2pentanone have a lower boiling point that 2hexanone if they are isomers and their molecular weights are the same?
asked by Sarah 
Science
How many families are found in the Phylum Arthropoda?
asked by Maggie 
Chemistry
A complex ion, [M(OH)6]4, is orange in solution. Which of the following ligands, when bound to the same metal might cause the solution to be blue? Cl CN CO F H2O I NH3 NO2 OH NCS
asked by Kourtney 
physics
A cooling fan is turned off when it is running at 870 rev/min. It turns 1200 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant? How long did it take the fan to come to a complete stop?
asked by Anonymous 
critical thinking
When the interests of politicians or big business moguls coincide with those of the masses which of the following is the consequence? Answer coverage of events will be slanted coverage of events will be automatic coverage of events will be cancelled
asked by Anonymous 
Math
How long will it take 7500 to triple itself if it is invested at 7% simple interest?
asked by Ashley 
math
find the sum of the square of 3 1 over 3 and the cube 3 over 2..
asked by mj 
Chemistry
Based on crystal field theory, which of the following metal ions will not be colored when placed in an octahedral crystal field? Au+ Fe3+ Ag+ Au3+ Nb3+
asked by Melody 
Physics help pleaseee
A cable with 21.2 N of tension pulls straight up on a 1.10 kg block that is initially at rest. What is the block's speed (in m/s) after being lifted 2.42 m assuming that the local acceleration due to gravity is 9.80 m/s2?
asked by Me 
Algebra
A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. 37 said they drove alone. 38 rode in a carpool. 25 rode public transportation. 6 used both carpools and public transportation. 10 used both a
asked by Monica 
statistics
if 1 adult male is randomly selected and is assumed to have 20 lb of carry on baggage, find the probabilty that his total is greater than 195 lb
asked by Kristie 
statistics
Can any sample proportion less than 0.5 be used to support a claim that the population proportion is greater than 0.5?
asked by tina 
physics
A 248kg crate rests on a surface that is inclined above the horizontal at an angle of 19.5°. A horizontal force (magnitude = 537 N and parallel to the ground, not the incline) is required to start the crate moving down the incline. What is the
asked by Jul 
Math
In 1976, there were five Sundays in February. In which of the remaining years in the 21st century will February have five Sundays?
asked by MATH HELP PLEASE 
math
pls. explain how to get this: A number x is the harmonic mean of two numbers a and b if 1/x is the mean of 1/a and 1/b. a) Write an equation to represent the harmonic mean of a and b. b) Determine the harmonic mean of 12 and 15. c) The harmonic mean of 6
asked by hi 
calculus
Differentiate the function. f(x)=3x ln 6x  3x
asked by Jessie 
Intro to food preperation
why is deep frying considered a dry heat cooking method? and broiling considered a moist cooking method?
asked by Aran 
advanced math
What is the half life of a substance if it decays by 75% in two weeks?
asked by katelyn 
physics
Suppose a beam of 5.0 eV protons strikes a potential energy barrier of height 5.5 eV and thickness 0.57 nm, at a rate equivalent to a current of 825 A. (a) How long would you have to waiton averagefor one proton to be transmitted? (b) How long would you
asked by Anonymous 
Calculus
Okay, I know that the derivative functon of the function 500/x is 500/x^2, but I am having a hard time getting to this result using limit notation. Could someone show or explain the steps used in limit notation to get the derivative of 500/x^2?
asked by Mishaka 
calculus
Differentiate the function. h(x)= ln(x+ sqrt(x^2 4))
asked by Ali 
Algebra
Ms Newton's class took the same test as Mr. Euclid's students. Ms. Newton's class has 20 students, and the average(mean) test score was 90. The average of Mr. Euclids class was 80. If you combine both classes the average score on the test is 85. How many
asked by Kahlil 
chem
A gas at a pressure of 2.0 atm is contained in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature. (Assume that the volume of the container changes with the volume of the gas.)
asked by keyisha 
math
I am a number between 75 and 87. I have fewer than 3 ones. I am an odd number. What number am I ?
asked by wwps 
Math
A lends altogether Rs 6000 to B and C for two years.B pays Simple Interest @ 10%p.a. and C pays Compound Interest @8 %.If C pays Rs 50 more than B as the interest , how much did A lend to each of them?
asked by priya 
english
Please help me with coming up with a thesis statement for this passage ? In Cormac McCarthy's The Road, the father and an old man who is perhaps named Ely (167, 171) discuss God. Considering this passage carefully—“When I saw that boy I thought I had
asked by mikku454 
Physics
Car 1 has a mass of m1 = 65 103 kg and moves at a velocity of v01 = +0.78 m/s. Car 2, with a mass of m2 = 92 103 kg and a velocity of v02 = +1.4 m/s, overtakes car 1 and couples to it. Neglect the effects of friction in your answer. (a) Determine the
asked by Taylor 
brown
parker wants to buy as many toys as she can with her 10$she can buy individule ponies for 2$ each or a set of 2 dolls for $3 what she she buy and why what do you need to find out what operations will you use why write a number sentence to show how you
asked by jennie 
Chemistry
Is the structure for chlorous acid H O Cl O or H Cl O ? O I was thinking that both could be correct but I am not 100% sure.
asked by Hannah 
math
if a number has a 9 in the ones place it is always divisible by 3
asked by rme 
college chemistry
what is the molarity of NaF in the final solution if a solution was prepared by mixing 35.0mL of 0.200M NaF with 28.5mL of 0.350M NaF
asked by S.Dunn 
Kinesiology
what is the torque generated to hold a 60N dumbell at 90 degrees? The dumbell is 0.6m from the shoulder, the centre of the mass of arm weighs 30N and is .25m from the shoulder, the moment arm is 0.05m?
asked by Laura 
Math
Can anybody help figure out how to write 20 hundredths and 8tenths. And 48 hundreds,25 tens, 12 ones and 4 tenths. I have been stuck on these.
asked by Samatha 
Math
How do I write the numbers in order from greatest to least and show my work 0.275, 2 5/8, 0.15, 3 6/7
asked by Ruby 
Comm II
When you write a definition of something, I was taught in school that you should not use the word you are defining in the definition. Does this still apply throughout a definition essay? If so, then how?
asked by Natasha 
Geometry
Which pair of transformations best describes the relationship between RST and VUT?
asked by Jean 
Geometry
Is this angle acute, right, or obtuse: Angle M is 102 degrees Angle N is 41 degrees Angle P is 37 degrees
asked by Rose 
Social Studies
Karl Marx's ideas are the foundation of A) communism B) capitalism C) mercantilism D) fascism
asked by Courtney 
PLEASE HELP!
What are the two most diverse animal phyla? Arthropoda and.....?
asked by Jill 
physics
a 200lb pound man walks out to the end of a uniform plank which projects perpendiculary over the edge of a roof. the plank is 20 ft long and weights 100lb. how far from the edge of the roof can the plank overhang?
asked by Anonymous 
MATH
a. Write the scientific notation b. Write the result in ordinary decimal notation. can you do this one so i know how to do the others (2.9 x 10^3)(3.0 x 10^3)
asked by Adam 
Physics
A car (mass = 1070 kg) is traveling at 40 m/s when it collides headon with a sport utility vehicle (mass = 2570 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle
asked by Taylor 
Chemistry
What would be the first step of the mechanism in the hydrolysis of SiCl4? I know that SiO2 is formed, but Im confused as to how this would occur.
asked by Alex 
math
whats the amount due today on 8000.00 at 7% from june 23. 2008
asked by louis 
Physics
A 59 kg polevaulter falls from rest from a height of 5.5 m onto a foam rubber pad. The polevaulter comes to rest 0.39 s after landing on the pad. a. Calculate the athlete's velocity just before reaching the pad. b. Calculate the constant force exerted on
asked by Force and Momentum 
Physics
An airplane has an airspeed of 100km/h north. if there is a 30km/h headwind what is its groundspeed
asked by Guadalupe 
Calculus (Derivatives)
Show the steps to get the derivative function of 500/x by evaluating the limit. By limit, they are referring to the equation, lim h > 0 (f(x + h)f(x))/h
asked by Mishaka 
algebra
For the following equation, state the value of the discriminant and then the nature of the soluation: 3x^28x11=0 Is there one real solution, two imaginary solutions or two real solutions?
asked by Jones 
french
for my homework we had to write a paragraph on what we do to help out around the house could you please let me know if there are grammar or spelling mistakes Pour aider autour de la maison décharger le lavevaisselle quand il doit être fait et j'ai aussi
asked by Ellie 
algebra
Write a quadratic equation in the variable x, having the given numbers as solutions. Type the equation in standard form, ax^2+bx+c=0. The soluation is 8 and is the only solution.
asked by Jones 
math
looking at the table of 9's facts. do you see another number pattern in the multiples of 9? explain.
asked by boss 
Math
Find the length of side a in the right triangle if b=12 and c=15 I have the length as 6 but I don't think this is correct Please help
asked by Allison 
science
home challenge iron in cereal. What happens when water is added to total cereal
asked by Janie 
chemistry
How many moles of sugar are required to react completely with 3.26 mol of oxygen?
asked by Anonymous 
algebra
Rewrite with a rational exponent and simplify. ^3 sqrt:22
asked by Robert 
Math
Find the integral of (3x2)4^x dx
asked by Ed 
mathematics
What will be the remainder when 2 raised to the power 2003 is divided by 17?
asked by ss.. 
algebra
If a pro basketball player has a vertical leap of about 20in., what is his hang time? Use the hang time function v=49t^2
asked by Smith 
algebra
1.FIND THE LCM OF 10X^7 AND 50X^4 2.FIND THE LCM OF x^2 36 AND x^2 + 11x +30 3.FIND THE LCM y^3+8y^2+16y, y^2 8y 4.FIND The LCM Of 15z^2 +60z and 3z^2 + 15z +12
asked by lisa 
mathematics..
the average of first four numbers in a GP is 140. find the ratio.
asked by ss.. 
English 12
I need help on an essay. I'm suppose to pick an author to write about and I chose Ernest Hemingway. I need help getting started. I need help on my thesis that way I can get started. Please Help and Thank you
asked by anoymous 
algebra
Identify the degree of each term of the polynormial and the degree of the polynormial. 4x^3+2x^2+7x+1 What is the degree of : the first term the second term the third term the fourth term the polynomial
asked by Lynn 
algebra
Find the xintecepts, for the graph of the equation: y=x^2+4x5
asked by Jack 
Physics
An airplane flies due north at 220 km/h with respect to the air. There is a wind blowing at 65 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
asked by Martha 
Health, Safety, and Nutrition
1)Following the nutritional label on a jar of peanut butter, you determine that 1 ounce of the peanut butter contains 115 calories and 9 grams of fat. What percent of the calories come from fat. a)30 b)40 c)70 d)80 i put c
asked by Alana 
Math
Cost 50 Selling Price 125 Mark up rate  Unknown, Operating Profit unknown Exected monthly sales (unit) 100 Need to solve for Mark up rate & Operating profit
asked by Keri 
Algebra Please help
A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone
asked by Linda 
geometry
A parallelogram ABCD has lengths of sides and angles given below. Find the length of the diagonals AC and BD. (Round your answers to two decimal places.) AB = DC = 6 and AD = BC = 5, angleA = 40°
asked by deanna