Questions Asked on
July 19, 2010

Physics
A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was realeased?
asked by Britney 
Chemistry (WebWorks)
Answer the follow questions by looking at how the HOMO and LUMO change on the Energy Profile plot. More than one answer is possible for some questions. A. The HOMO image seen at the longest constraint distance most closely resembles . (Use i, ii, iv, etc.
asked by Anonymous 
physics
A rope 26 ft long is attached to two points A and B, 20 ft apart at the same level. A load of 250 lb is carried at the middle of the rope. What forced is exerted on A?
asked by senior pogi 
physics
A 9.5kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 70 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest
asked by Anonymous 
chemistry
What is the pH of 0.10 M HNO2 given Ka = 4.5x104.
asked by Anonymous 
UCI Webworks
Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,
asked by Screwed 
college physics
a 7500 kilogram rocket blasts off vertically upward from the launch pad with a constant acceleration of 2.25 m/s squared and feels no appreciable air resistance, when it reaches the height of 525 meter its engine suddenly fail so that the only force acting
asked by kat 
Physics
A 15g bullet is fired horizontally into a 3.000kg block of wood suspended by a long cord. The bullet sticks in the block. Compute the speed of the bullet if the impact causes the block to swing 10 cm above its initial level. Initial Velocity of
asked by Lony 
geometry
If AC = 15 centimeters, and BC = 12 centimeters, which does AB equal?
asked by Anonymous 
physics
superman is said to be able to leap tall buildings in a single bound. how high a building could superman jump over if he were to leave the ground with a speed of 60m/s at an angle of 75 degrees to the horizontal?
asked by Anonymous 
chemistry
Write balanced equations and solubility product expressions for the solubility equlibria of the following compounds: a. CuBr b. ZnC2O4 c. Ag2CrO4 d. Hg2Cl2 e. AuCl3 f. Mn3(po4)2 can you give me some examples using the compounds given?
asked by Jin 
Chemistry
A scuba diver 40ft below the ocean surface inhales 50.0 ml of compressed air mixture in a scuba tank at a pressure of 3.00 atm. and a temperature of 8 C. What is the pressure of air in the lungs if the gas expands to 150. ml at a body temperature of 37 C?
asked by amy 
statistics
Assume that a set of test scores is normally distributed with a mean of 100 and a standard devaiton of 20. Use the 689599.7 rule to find the following quantities: a. percentages of scores less than 100 b. relative frequency of scores less than 120
asked by terry 
Chemistry
The halflife of radon222 is 3.82 days. If a sample of gas contains 4.38ug of radon222, how much will remain in the sample after 15.2 days?
asked by Leyah 
Chemistry(Webwork)
Enter the numerical energy values (X, Y, & Z) on the yaxis and calculate the Ea and G. (Note: This is a multipart problem. First input your values for X, Y, and Z. When you are satisfied with your values submit them and check the box Go on to next part
asked by Anth 
chemistry
Explain, with balanced ionic equations, why a. CuI2 dissolves in ammonia solution b. AgBr dissolves in NaCN solution, c. HgCl2 dissolves in KCL solution.
asked by Jin 
chemistry
An air bubble has a volume of 0.500 L at 18 C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? A. 0 C B. 425 K C. 12 C D. 575 K
asked by amy 
Chemistry
Determine the molar mass of each of the following gases? A. 2.90 g of gas that occupies 0.500 L at 0 C and 1.00 atm (STP) B. 1.48 G of gas that occupies 2.00 L at 0 C and 760 mmHg (STP) C. 0.726g of a gas that occupies 855 mL at 1.20 atm at 18 C? D. 2.32 G
asked by amy 
Physics
"Two springs are hooked together and one end is attached to a ceiling. Spring A has a spring constant of 25N/m, and spring B has a spring constant of 60N/m. A mass weighing 40.0N is attached to the free end of the spring system to pull it downward from the
asked by Stuck 
UCI webworks Problem 9
Use the labels (CV+, –OH, CVOH, , Ea (activation energy), & G) to complete the reaction potential energy profile below. More than one answer is possible for some spots a. ? b. iii c. iv d. ii e. i these are the correct answers. idk a but i know its not
asked by Screwed 
physics
Gooluk, the Inuit, is pulling a 62kg sled through the snow on his way home from ice fishing. On the back of the sled is his 50kg sack of fishing tackle. The coefficient of sliding friction between the sled and the snow is .07 and the coefficient of sliding
asked by Anonymous 
Physics
Vector A has length 4 units and directed to the north. Vector B has length 9 units and is directed to the south. Calculate the magnitude and direction of A+B.
asked by Glam 
chemistry
Solid NaI is slowly added to a soln that is 0.010M in Cu+ and 0.010M in Ag+. a. Which compound will begin to precipitate first? b. Calculate [Ag+] when CuI just begins to precipitate/ c. What percent of Ag+ remains in solution at this point?
asked by Jin 
CHEMISTRY (WEBWORK)
SPARTAN: Enter the numerical energy values (X, Y, & Z) on the yaxis and calculate the Ea and G. (Note: This is a multipart problem. First input your values for X, Y, and Z. When you are satisfied with your values submit them and check the box Go on to
asked by arthur 
Chemistry
What is used to tell different isotopes of a particular element apart? A. the mass number B. the atomic number C. the number of protons D. the number of electrons A is the answer. After how many halflives are there equal amounts of parent and daughter
asked by Derrick 
statistics
M&M plain candies have weights that are normally distrbuted with a mean weight of 0.8565 gram and a standard deviation of 0.0518 gram. A random sample of 100 M&M candies is obtained from a package containing 465 candies: the package label states that the
asked by cindy 
business
Many of the toy products sold in the United States are imported from Taiwan because the Taiwanese can produce these products more efficiently than U.S. companies. This is an example of
asked by kyle 
Astrophysics
If an eclipsing binary system has a period of 32 days, an orbital velocity of 153km/s, and an orbit that is nearly edgeon, what is the circumference of the orbit? The radius of the orbit? The mass of the system? I can't seem to find a starting point for
asked by Sheena 
geography
How are natural resources distributed throughout the world? (a) Most natural resources are found in developed nations. (b) Most natural resources lie beneath the ocean floor. (c) Natural resources are distributed evenly among all nations. (d) Natural
asked by Priya 
Chemistry
The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?
asked by Leah 
statistical reasoning
Systolic blood pressure for women between the ages of 18 and 24 is normally distributed with a mean of 114.8 (millimeters of mercury) and a standard deviation of 13.1. A. What is the likelihood that an individual woman has a blood pressure abouve 125? B.
asked by cindy 
UCI Webworks
Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,
asked by Screwed 
College physics
You have a collection of six 1.0 kilo ohm resistors. what is the smallest resistance you can make by combining them
asked by emoni 
chemistry
Out of the following compounds, which one is the weakest base? NH3, CH3NH2, NH2F, NH2Br
asked by Anonymous 
12th grade  Advanced Functions
the height, h, in meters, of a gold ball t seconds after is is hit can be modelled by the function: h (t) = 4.9t^2 + 32t + 0.2. When is the height of the ball 15 m?
asked by Nish 
CHEMISTRY (WEBWORK)
SPARTAN: Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? _____ (Use i, ii, iv, etc. for your answer) B. at the highest
asked by arthur 
physics
A pump is required to lift 800 liters of water per minute from a well 15.0 m deep and eject it with a speed of 17.0 m/s. How much work per minute does the pump do?
asked by tom 
epimediology
a. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder. b. A casecontrol study of the relationship between liver cirrhosis and alcohol use. In this study,
asked by trisha 
physics
A 300kg motorboat is turned off as it approaches a dock and it coasts in toward the dock at .5 m/s. Isaac, whose mass is 62kg, jumps off the front of the boat with a speed of 3m/s relative to the boat. what is the velocity of the boat after Isaac jumps?
asked by Anonymous 
math
how do i represent 1/(1+x^4) in general taylor polynomial. I know the pattern is 1x^4+x^8x^16..... I don't know how to represent this pattern in variables equation form
asked by eng 
Physics
a ball is thrown vertically upward from the ground with the velocity of 30m/s. a) how long will it take to rise to its highest poitn? b) how high does the ball rise? c) how long after projection will the ball have a velocity of 10m/s? d) what is the total
asked by Patrick 
statistics
Complete the hypothesis test: null hypothesis = 52, alternative hypothesis =
asked by Shelly 
math
how do i represent 1/(1+x^4) in general taylor polynomial. I know the pattern is 1x^4+x^8x^16..... I don't know how to represent this pattern in variables equation form
asked by eng 
Biology
1. Why are cells from a blastula used to examine mitosis? 2. How fast do you think cells divide when an embryo is developing compared to the normal growth of an animal?
asked by Mely 
college
a .215kg particle is released from rest at point A in a smooth hemisperical bowl of radius .30m with a height of 2/3R. what is the gravitational potential energy at A relative to B?
asked by Anonymous 
Biology
How do sperm and eggs differ in size? (consider size and the quatity of each gamete). Explain possible reasons for these differences.
asked by Mely 
geometry
The length is 5ft less than twice the width and the perimeter is 80ft
asked by julian 
chemistry
The amount of indicator used in an acidbase titration must be small. why??
asked by Jin 
Finance
Year Cash Flow 1 $695,000 2 876,250 3 1,057,500 4 1,238,750 5 1,420,000 1. Calculate the IRR and NPV of this project utilizing a 12% discount rate and a 15% cap rate. Ms. Brown was able to secure a loan for $1,540,000, and an equity investor agreed to
asked by Quentin 
math.please help!
minimize z= 5x + 9y subject to 6x + y >= 18 2x + 3y >= 30 x= 0 find the corner points, ans subject the objective function to the corner points, finding the minimum value of z giving the constraints. i know the first and second points but i couldn't figure
asked by sha 
verb tense
i am to write five sentences about the role of education in successful financial planning, in which i am correctly to use a different verb tense in each sentence
asked by shawna 
Drafting an Introduction and a Conclusion
Hi can someone assist mewith this DQPost a minimum 200 word response to the following: Pretend you are a teacher explaining to your class how to write an introduction and conclusion for a persuasive research paper. 1. Identify and describe the components
asked by jay 2 
Math
If it takes 16 faucets 10 hours to fill 8 tubs, how long will it take 12 faucets to fill 9 tubs?
asked by Pauline 
Chemistry
What is needed for nuclear fusion to occur? pressure, a beta particle or high temperature? I think it's only high temperature and pressure needed.
asked by Derrick 
Math
If the length of a rectangle is increased by 120%, and its width is decreased by 20%, what happens to the area of the rectangle.
asked by Pauline 
geometry
what is the area of a rhombus if AB equals 9.9 and AC equals 13 and DB equals 15?
asked by jay 
9 gr
3. Which statement is true about the following set of data? 18, 17, 21, 24, 21 a.The mean is greater than the median. b.The median is less than the mode. c.The mean and median are the same number. d.The median and the mode are the same number.
asked by ruslan 
chemistry
When Cl is added to the following reaction at equilibrium, does the reaction go in the forward direction, reverse direction, or remain unchanged? Ag>Ag^+ + Cl^
asked by Anonymous 
algebra factoring
given the revenue eqn R(p) =0.08p^2+300p how do i determine the demand equation?
asked by Anonymous 
Physical Science
If you can help with this problem, I would so appreciate it. If I can understand, I think I can do the rest of them. Here is the problem and the answer. How do I work through to the answer? A certain radio wave has a frequency of 1.03 MHz. What is the
asked by Sam 
math.please help!
set up the linear programming problem. Do not solve. A brewery manufactures three types of beerlite, regular and dark. Each vat of lite beer requires 6 bags of barley, 1 bag of sugar, and 1 bag of hops. Each vat of regular bear requires 4 bags of barley,
asked by sha 
Chemistry
Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,
asked by Anth 
writing
Is this topic sentence clear enough? Or is it too broad? If so, could I get some guidance, Im lost. This is for a comparaison/contrast paragraph. "To share the same blood type and genetic material does not ensure that two people will be exactly alike, as
asked by Anonymous 
MAT/117
a. Suppose that a market research company finds that at a price of p = $40, they would sell x = 37 tiles each month. If they lower the price to p = $25, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time.
asked by Michelle 
chemistry
When KI is dissolved in water, the solution will be ___. a) Strongly Acidic b) Slightly Acidic c) Neutral d) Basic
asked by Anonymous 
chemistry
When KI is dissolved in water, the solution will be ___. a) Strongly Acidic b) Slightly Acidic c) Neutral d) Basic
asked by Anonymous 
Math11U
Simplify each trigonometric expression a) Sin(theta)Cot(theta)Sin(theta)Cos(theta) c)(sin x + cos x)(sin x  cos x)+ 2 cos(squared)x
asked by Katya 
CJA/363
Technology and Communication Paper · Prepare a 1,050 to 1,750word paper that explains how technology has affected the communication capabilities of specialized databases in the criminal justice system. · Include the following in your paper: o A
asked by Jamie 
Accounting
It's approaching yearend, and your president has asked you, the management accountant, to visit his office for a hearttoheart talk. After he closes the door, he tells you that profits for the year will end up below plan and that he's disappointed. He
asked by Anonymous 
Phyical Science
I have several problems where I have the answer, but I need to know how to work it out. You guys are amazing. Any help would be appreciated. Problem: A series of ocean waves, each 6.0 m from crest to crest and moving past an observer at a rate of 2.0 waves
asked by Sam 
Physics
Explain which would be more useful to you if you needed to locate a buried treasure of the position of the treasure. I'm guessin its the distance, but the position is also very important.
asked by Anonymous 
Physics
Could you explain to me how it is possible to run a distance of 1.0 km and have zero displacment.
asked by Anonymous 
MATHS
if a student scores 58 in a maths exam predict the score they would get in science??? Have no idea where to start on this answer other than having a good guess!! Can anyone help please??? Thanks Andrew
asked by ANDREW 
ETH 125
Can you help me with finding sources for information on whether Chinese Americans faced discrimination through redlining, institutional discrimination, reverse discrimination, and glass ceiling? Thank You!
asked by Anonymous 
9gr
An ice cream shop owner recorded these daily sales of ice cream pints at his shop over the last 15 days. (See assignment sheet for stem and leaf plot). How many pints must he sell on day 16, so that the mean number of pints sold is equal to 60? a.53 b.60
asked by ruslan 
XBIS219
Conduct research on the following three booksellers: Amazon, Barnes and Noble, and a local bookseller of your choice in terms of business model, competition, and mcommerce capabilities. At site click on Investor Relations and Careers on the bottom of the
asked by Anonymous 
Finance
You need to buy 20 computers for your business. You have the option of leasing the equipment for four years at $5,000 per year or buying the equipment at $1,000 per unit. Calculate the total cost for both options. What is the best option and why?
asked by Dale 
coding
when is it correct to assign a fourth digit category cade
asked by nirva 
CJS230
This is my assignment and I don't understand it. Write a 200 to 300word paper in APA format explaining a difference between the conventional forms of rehabilitation programs and the newer programs of today. Why do you think this change is important to
asked by Isabella 
trig
Plot the point and then find three representation of the point (3,2pi/3)
asked by jesse 
History 1301
How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe? Be specific. How were these differences important to the international state of affairs in 1450?
asked by Karen 
MAT117
How do you determine if a polynomial is the difference of two squares?
asked by Cindy 
Math  Calculus
What is the domain of this function?: y= ln(2x12)
asked by Julia 
Biology
How do the sizes of the oocytes differ as they move from the follicular stage towards the mature graafian follicle?
asked by Mely 
Math12
Tan^2 30* cos^2 45*
asked by Ken 
Algebra
explain the logical error Square both sides to get a2 = b2
asked by JT 
geometry
a regular hexagon has a perimeter of 50m.What is the length of its side
asked by Anonymous 
algebra
Please help me factor this by grouping. I am stuck. 7x^335x^26x+30
asked by Joe 
12th gradeAdvanced functions
provide any 2 solutions for the equation y=cot(1/2(thetapi/2))5 solutions may be in degrees
asked by aaron 
Accounting
How can I project profits using tradition format ?
asked by adolphus 
Biology
Given colchicine's properties, could this compound be used to treat cancer?
asked by Mely 
4th grade
how do I use sentences comparing Strong, stronger and strongest? what is the difference between those words?
asked by Vincent 
bnhs
a regular triangle and a regular hexagon have the same perimeter length.If the length of a side of hexagon is 20cm,how long is each side of the triangle?
asked by tintin 
Math
(2m)^4 * (2m)16
asked by June 
math
1/2a5=1/3a1 please show me how to set this problem up and solve it
asked by katrina 
Math  Calculus
I have to solve for x in this problem: (3x+5)/[(x1)(x4+7)=0
asked by Julia 
statistics
what is the probability of 62 with a mean of 60 and a standard deviation of 7?
asked by beverlt 
Algebra
Why are these algebraic expressions used and explain the logical error: Since a = b, then a2 = a * b Subtract b2 from both sides a2 – b2 = a * b – b2 Factor both sides: ( a + b )( a – b ) = b(a – b ) Divide both sides by ( a – b) ( a + b ) = b
asked by JT 
english
Lucia works for a lawyer who depends on her for everything. Answering phones, planning business trips, proofreading documents, and scheduling appointments. Is this sentence grammatically correct
asked by james 
Immigration
What are the three most significant changes that have occurred in our understanding of the immigration process
asked by mike 
Medical Terminology
I need to devise a memory aid for any five terms relating to the genitourinary and five terms relating to the female reproductive system.
asked by Randi Grzesik 
PHYSICS
How do we determine time interval? We determine time interval by subtracting the final time from the initial time.
asked by Anonymous 
7th grade
what is the origin of pi? where does it come from? How is it used?
asked by Anonymous 
9gr
Caleb scored the following on his first four tests: 78, 84, 88, and 82. What is the least grade he can receive on his next test to have an average of 85 for the five tests? a.66 b.83 c.93 d.100
asked by david 
math
f(x)=2x3
asked by De 
English
How can I become my own editor and review my writing with a critical eye?
asked by Melinda 
medical billing and coding
You've started your first day at Venture Outpatient Surgery Center. Explain how you would code an operative report.
asked by Leonor 
EARTH SCIENCE
What would a calendar be like on Venus (for a hypothetical Venusian resident)?
asked by Anonymous 
Algebra
Find logical error a2 = b * b
asked by JT 
math..help?
from 1500 lottery tickets that are sold,3 tickets are to be selected for first, second, and third prizes. how many possible outcomes are there?
asked by sha 
AED
Develop a protocol for channeling students into a gifted program. In 200 to 300 words, include the following:
asked by Anonymous 
Physics
How do we determine time interval? We determine time interval by subtracting the final time from the initial time.
asked by Anonymous 
math
collect the like terms x5x
asked by sally 
statistics z or t test
the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation
asked by Anonymous 
english
We wre exceedingly pleased that Rex come home.. Is exceedingly an adjective?
asked by Patty 
immediate help needed statistics one tailed hypo
the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation
asked by Anonymous 
High School Chemistry
Determine the pH of solutions with the following ion concentrations: 1) {H+} = 1.0x10 to the negative 3 M
asked by Jesse 
geometry
a pentagon has sides 2N+7,3N+2,6,7N,5N6.If the perimeter is 180,find the length of each side.
asked by tintin 
math
m=18 kg w=? solve
asked by kftdfwekdfqtyfdtqkwd 
Math  Calculus
Which of the following expressions are identical? a. (sinx)^1 b. arcsinx c. sin x^1 d. 1/sinx
asked by Julia