Questions Asked on
October 31, 2008

Physics
A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. (Intro 1 figure) The spring has a spring constant k, the ball has a mass m, and the ramp rises a height y above
asked by Sam 
halflife of radioisotope
A radioisotope has a halflife of 4 days. How much of a 20gram sample of this radioisotope remains at the end of each time period? 1) 4 days 2) 8 days
asked by Stephanie 
physics kinetic energy
a) if a particle's speed decreases by a factor of four, by what factor does its kinetic energy change? b) particle A has three times the mass and twice the kinetic energy of particle B. What is the speed ratio VA / VB?
asked by joyce 
Chemistry
Ca + F2 > CaF2 The mass of CaF2 that results from the reaction of 3.00 g of calcium and 2.00 g of fluorine is 4.02 g. What is the percent yield? (Atomic weights: Ca = 40.08, F = 19.00).
asked by Songyi 
Physics
A long uniform rod of length 6.66 m and mass 6.74 kg is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a vertical position as in the figure. Question 1: At the instant the rod is horizontal, find its angular
asked by Jimmy 
math
This is an SAT prep question. Senai customized her bicycle by exchanging the front wheel for a wheel that had one half the diameter of the back wheel. Now Senai rides the bicycle, how many revolution does the front wheel make for each revolution on the
asked by Anonymous 
Chemistry
Given the chemical reaction: N2+3H2>2NH3 If 20 molecules of nitrogen react with 30 molecules of hydrogen to from ammonia, what is the total number of molecules present after the reaction goes to completion?
asked by Songyi 
physics
Use the period of the earth (2.34 y), its mean orbital radius (1.496 × 1011 m), and the universal gravitational constant (6.673 × 10−11 N · m2/kg2) to calculate the mass of sun. Answer in units of kg.
asked by Molly86 
chemistry
How many total moles of ions are released when each of the following samples dissolves completely in water? 30.2g of Ba(OH)2 8H2O
asked by ben 
math
In rolling a pair of dice, suppose you win $5 if the sum is 10 but lose $2 if the roll is "doubles." If the price to play is $1, would it be a fair game? Justify your answer.
asked by joey 
Statistics
An automobile in surer has found that repair claims have a mean of $1520 and a stardard deviation of $770. Suppose that the next 100 claims can be ragarded as a random sample from the longrun claims process 1. What is the mean and standrd deviation of the
asked by Kim 
chemistry
a)indium115 has a half life of 4.5 hours. if you start with a 12.0mg sample of indium115, how much will remain after 13.5 hours? b)how much of a 3.50mg smaple of nickel63 will remain after 368 years? the halflife of nickel63 is 92 years?
asked by amanda 
math
Suppose a single die is rolled, Find: a)P(6, given that an odd number was rolled) b) P(5, given that an odd number was rolled)
asked by helpme 
college
Describe the cultural bases of negotiation conflict in 250 to 300 words, taking into account the following: o What specific factors underlie negotiation conflict o Why the underlying factors of negotiation conflict are difficult to recognize o How one can
asked by jujubee 
math
suppose a pair of dice is rolled. Consider the sums of numbers on the top of the dice. Find the probabilities: a) P(5, given that the sum are odd) b) P(odd, given that the sum rolled is 5) c) P(7, given that one of the dice rolled was odd)
asked by ken 
Social Studies
I am trying to find something that starts with the letter X that is related to the Civil War, can anyone help me?
asked by Tim 
physics help 3!! **
Based on the following data about planet X (which orbits around the Sun): Planet X's distance from Sun = 3.6*1012 m Planet X's radius = 2*106 m Planet X's mass = 8.2*1022 kg a.) Find gx, the size of the acceleration due to gravity on the surface of Planet
asked by kelsey 
math
Suppose you toss a coin and it you win a dollar if it comes up heads. If it comes up tails you toss the coin again. This time you get two dollars if it is heads. If it is tails you toss it again. This time you win four dollars if it is heads, but if it is
asked by brianne 
chemistry
The redox reaction below occurs in acidic solution. Balance it with the smallest whole number coefficients and determine the coefficient for H+. MnO4(aq) + HNO2(aq) > Mn2+(aq) + NO3(aq)
asked by Megan 
HS Calculus/math
x=2sint y=3cost 0
asked by ee 
algebra
One number is twice another. The sum of their reciprocals is 3/10. Find the number.
asked by Anonymous 
math
Which is more probable. a) flipping a coin 3 times and obtaining at least 2 heads b) flipping a coin 4 times and obtaining at least 2 heads Justify your answer
asked by joey 
MATH
0.42 0.163
asked by ROXANNE 
math
In the xyplane, line l passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at the point (t,t+1), what is the value of t? I tried drawing a picture of the problem described above, but I don't
asked by Michelle 
Algebra 2
Linear Programming Your club is making boxes and plant hangers to sell as a fundraiser. Your profit is $10 for a box and $8 for a hanger. How many boxes and hangers should you make in order to maximize your profit under the following conditions A) lumber
asked by Carver 
psy
need some information to compare and contrast this trait below: I am confused. Neurophysiological substrates Traits are biological patternings in the central nervous system that cause behavior to occur and account for the consistencies in socioemotional
asked by rose 
HS Calculus/math
suppose that in any given year, the population of a certain endangered species is reduce by 25%. if the population is now 7500, in how many years will the population be 4000?
asked by dt 
HS Calculus/math
Solve the equation cotx=4 in the interval 0
asked by dt 
Stem Cells
Are adult stem cells found only in adults human beings or all human beings regardless of age?
asked by Lena 
chemistry
how can i describe the test to see if ACIDS ar covalent or ionic what do the results of such a test show
asked by lila 
Chemistry.
hi again, thanks to the previous help i got the first part of the question. the second part builds on the first part as we used that stock solution for titration of the next. we are now given: Concentration of Standard Acid Soultion (M) = 0.100 M Volume of
asked by Vanessa 
SCI 125
What are 3 freshwater resource issues? What are 3 ocean water resource issues? Choose one fresh or ocean water resource challenge and describe in detail why the issue has become a problem and how human activities have contributed to the problem.
asked by angela 
math
flip a coin 3 times a) what are the odds in favor of getting exactly 2 heads b) what are the odds against getting at most 1 tail
asked by annonymous 
math
4y+6x+7=10+6x what is slope and yintercept
asked by steve 
math
While shopping for an air conditioner, Adam Bryer consulted the following table giving a machines BTUs and the square footage that it would cool. Ft^2(x) BTUs(y) 150 5000 175 5500 215 6000 250 6500 280 7000 310 7500 350 8000 370 8500 420 9000 450 9500 a.
asked by Dan 
Business
• Consider the following scenario: Your company sells its products in many different countries. The Director of Exporting and Trade has decided to take on a number of interns over the summer to help the company communicate with its outlets within the
asked by E 
physics help 4 please!!
Two turtles (each 2 kg) sit on an approximately massless branch in the water. They sit on opposite sides of the branch's center, each 3 m away. The branch (10 m long) is spinning at 2 rad/s about its center (nearly without friction). Now, if both turtles
asked by kelsey 
Geography/Social Studies
Find the destination using the clues below. With easy access to the bountiful sea, it's no surprise that this place developed into a leading fishing and whaling port in the 18th century. Typical of port towns with moving (shifting) sandbanks (or sandbars),
asked by Larry 
math
flip a coin 3 times a) what are the odds in favor of getting exactly 2 heads b) what are the odds against getting at most 1 tail
asked by joey 
math
31/2y=8x what is the slope and yintercept
asked by johnny 
chemistry
Ammonia acts as a base in aqueous solution; Kb is equal to 1.8 x 105. What is the Ka for the ammonium ion NH4+ in aqueous solution?
asked by Megan 
chemistry
Which of the following has the central atom with the lowest oxidation number? a. CO32 b. NO3 c. ClO2 d. SO42 e. PO43
asked by Megan 
math
find an equation of the line having the given slope and containing the givin point m=2,(7,5) the equation of the line is y=
asked by mikey123 
physics help 2 please!!
Mass A (7 kg) and mass B (10 kg) sit on the ground, 2 m apart. a.) What is size of the the gravitational force: on A from B? N on B from A? N b.) What is the size of the gravitational force: on A from the Earth? N on B from the Earth? N once again, i am
asked by kelsey 
HS Calculus/math
Find the Parametrization for the left half of the parabola y=x^24x+3
asked by dt 
physics
A long uniform rod of length 4.76 m and mass 5.48 kg is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a vertical position as in the figure. (A) At the instant the rod is horizontal, find its angular speed.
asked by Molly86 
chemistry
How many total moles of ions are released when each of the following samples dissolves completely in water? ? 3.70g of CuSO4 5H2O
asked by james 
healthcare
I need some help with describing some approaches to measuring patient outcomes. The links that were provide really didn't help me.
asked by Nikia Walker 
math
a diver dives to 84m. If the diver rises 5 meters per min for 10 min. Where is the diver in relation to the surface. The answer would be 34 meters right?
asked by deedee 
chemistry
sorry to keep bugging you, but if it makes you feel better i am understanding it more. what if you have the same numbers, but you are trying to find the concentration of an UNKNOWN acid. all you have is: Volume of Unknown Acid Volume of Stock Solution
asked by Vanessa 
8th grade pigskin georgraphy
Determine which state capital will be visited bty a team form a state capital.
asked by Anonymous 
For Jishka Answerers
This is not a homework question but for Ms.Sue Sra Mcgin drwl Dr.bob Guru Blue writeacher and any others i have 61 posts, 62 counting this one and I just wanted to ask do I annoy you guys sometimes? If so I apologize. It's just that im on Jishka a lot ^^
asked by mysterychicken 
bio
how does acute pancreatitis affect organs of the digestive system? does anyone know its answer?
asked by jess 
civics
what example can I write about the rights that the 3rd amendment protects?
asked by bianca 
math
(6,4)and (8,8) find the slope if it exists, of the line containg the pair of points
asked by mikey123 
information technology
How would you describe property management system (PMS, pointof sale(POS) and Accounting uses and interelation within the hospitality industry?
asked by Ishi 
Physics  continued
Would it be sq(2ks^2/m)?
asked by Sam 
math
m=6/7(5,7) the equation of the line is y=
asked by mikey123 
Windows XP
You are assisting a salesperson who has called into the Help Desk with a problem. The user’s laptop has a single hard drive, and he is currently using the laptop on the road while visiting potential sales partners. At one sales site, the technical staff
asked by LD 
reimbursement methodologies
under major maedical insurance, $250 must be paid before the company assumes liability. who responsible for paying the $250?
asked by Anonymous 
reimbursement methodologies
the ability to accurately predict yearly expenses was one reason that large companies decided to A. offer HMO programs. B. enroll in manage care plans. C. selfinsure their employees. D. offer medical spending plans.
asked by Anonymous 
college
Assignment: · Explain the cultural differences in approaching negotiations that predominate in two different countries. Be sure to include: o Negotiation models o Negotiation styles o Outcome preferences · Imagine a business person from each of the
asked by jujubee 
chemistry
a compound contains only c,h and o. c=48.65% and h=8.11%.a)calculate its emperical formula
asked by sameer 
accounting, departmental accounts
P/S: Pls help me to solve this problem. i really don't get it and i have to present the answer in front of the classroom by next week. from the following list of balances you are required to prepare a departmental trading and profit and loss account in
asked by miya 
Chemistry
I've been given the Volume of Concentrated NaOh solution (mL) and also the Concentration of Concentrated NaOh solution (M). I also have the volume of stock solution after dilution (mL). The question is asking the approximate concentration of stock solution
asked by Vanessa 
chemistry (continued)
i kinda understand waht you're saying. to be a bit more clear this is from a lab, and here are the volumes we retrieved: Volume of Concentrated NaOH soultion (mL) = 9.00 mL Concentration of Concentrated NaOH soultuon (M) = 6.00 M Volume of Stock Solution
asked by Vanessa 
math
which store is cheaper kroger or meijers?
asked by neha 
the inspection process
the main reason real estate agents use home inspections is to?
asked by Anonymous 
math
okay I need to find the slope for 8x=7y+63
asked by johnny 
math
I do not even know where to start with this one, can someone help? the peak of a mountain is 19,340 ft above sea level. what is the integer that best expresses the given number?
asked by deedee 
Georgia Studies
How was the name Ku Klux Klan brought into being? What were some of the harsher things that they did? Thanks Mysterychicken
asked by mysterychicken 
accountancy
2. The ledger accounts of M Ltd. show the following balances: Rs. 14% Preference share Capital 3,00,000 Securities Premium 20,000 Investment Allowance Reserve 50,000 General Reserve 80,000 Profit and Loss Account 38,600 The company redeems preference
asked by manoj 
insurance
what is the corporate structure of Manulife Financial Corporation?
asked by Tee