Questions Asked on
March 29, 2014

Math
A physics exam consists of 9 multiplechoice questions and 6 openended problems in which all work must be shown. If an examinee must answer 5 of the multiplechoice questions and 2 of the openended problems, in how many ways can the questions and
asked by Anonymous 
Chemistry
A 1533 kg car is traveling down the road at 90.6 km/h. While traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?
asked by Harielle 
algebra
The height of a ball dropped from a tall building is modeled by the equation d(t) = 16t2 where d equals the distance traveled at time t seconds and t equals the time in seconds. What does the average rate of change of d(t) from t = 2 to t = 5 represent?
asked by Anonymous 
Chemistry Help Please!!!
What is the greatest source of error for the hydrolysis of salts and pH of buffer solutions lab?How would you minimize this source of error?
asked by Kim 
3 science questions
7. Which of the following is used to make biomass fuel? B. plants and animal waste C. coal
asked by Check my answers please 
physics
The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 4.20N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the drawing, determine the
asked by adeola akinwekomi 
chemistry
What are strongest intermolecular force in hydrogen iodide ?
asked by john 
math
Suppose you borrow $1,000 of principal that must be repaid at the end of two years, along with interest of 5 percent a year. If the annual inflation rate turns out to be 10 percent, (a) What is the real rate of interest on the loan? For this I got 5%. (b)
asked by jay 
HIM
Case Discussion Dr. Pearson has recently been hired into the Central City Internal Medicine Group as its fifth physician. He has recently completed his residency and is eager to enter private practice. Dr. Pearson is introduced to Meredith and Dawn, two
asked by abed 
physic
A 69cmdiameter wheel accelerates uniformly about its center from 150rpm to 320rpm in 4.4s . Determine angular acceleration?
asked by Charles 
Chemistry Help Please!!!
1) using kb for NH3 calculate ka for NH4+ ion. Compare this value with that calculated from your measured ph's? 2) how should the pH of a 0.1M solution of NaC2 at H3O2 compare with that of a 0.1 M solution of KC2H3O2? Explain briefly? THANK YOU!
asked by Layla 
math
If the consumption function is C = $200 billion + 0.6Y, (a) How much do consumers spend with incomes of $8.25 trillion? I got 5.2 trillion for this. (b) How much do they save? ??
asked by jay 
south carolina state history
Which statement explains why public education suffered during reconstruction? A) the state preferred private education to public educatioin. B) teachers were not properly trained to do their jobs effectively.**** THIS ONE? C) the general public cared more
asked by Runtafus 
physic angular momentum and torque
Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
asked by Jenna 
Statistics
. A 2003 Harris Poll of 993 randomly selected American adults found that 69% believed in capital punishment (death penalty). A sample size of 1010 American adults in 2000 found that 64% believed in capital punishment. Write the hypotheses for a
asked by Robert 
Chemistry
In this experiment NaOH is standardized to find out the percent by mass of the acetic acid in a sample of vinegar. A student had not allowed the NaOH pellets to dissolve completely before standardizing it with KHP, but when the student refilled the buret
asked by Sandy 
physic angular momentum and torque
What is the angular momentum of a figure skater spinning at 2.7rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.6m , a radius of 14cm , and a mass of 50kg How much torque is required to slow her to a stop in
asked by sammy 
Fiance
What must be the price of a $10,000 bond with a 6.5% coupon rate, semiannual coupons, and two years to maturity if it has a yield to maturity of 8% APR?
asked by Victor 
Finance
If $12,000 is invested in a certain business at the start of the year, the investor will receive $3,600 at the end of the next four years. What is the present value of this business opportunity if the interest rate is 7% per year?
asked by Victor 
Physics
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency. If one string slips from its normal tension of 610 N to 542.00 N, what beat
asked by Jen 
chemistry
if .5 mole of baCl2 is mixed with .2 mole of Na3Po4.Then maximum number of mole of Ba3(PO4)2 is
asked by anu 
Finance
What is the coupon rate of a twoyear, $10,000 bond with semiannual coupons and a price of $9,543.45, if it has yield to maturity of 6.8%?
asked by Victor 
Trig
If the period of a cosine function is 1/3 what is the frequency of the function?
asked by Kiki 
math
1. For n repeated independent trials, with constant probability of success p for all trials, find the probability of exactly x successes in the following exercises.Round your final answers to three decimal places. a.n = 7, p = ¼ , x = 4
asked by carol 
Stats
Assume that event A occurs with probability 0.4 and event B occurs with probability 0.5. Assume that A and B are disjoint events. The probability that either event occurs (A or B) is A. 0.0 B. 0.7 C. 0.9 D. 1.0.
asked by Tracy 
Chemistry
In this experiment NaOH is standardized to titrate it with vinegar so thtat the percent by mass of the acetic acid can be determined. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How
asked by Sandy 
algebra
Jeremy had 36 community concert tickets to sell. He sold 2 and 3 and a third of the tickets did jeremy sell
asked by Kayla 
chemistry
what is the hybridization of each atom for hydrocyanic acid?
asked by Mai 
Physics
The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The
asked by Jen 
Stats
The high temperature X (in degrees Fahrenheit) on January days in Columbus, Ohio varies according to the Normal distribution with mean 21 and standard deviation 10. The value of P(X < 10) is
asked by Tracy 
Chemistry
How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concentration? How is the term acid anhydride applied here? I know you had answered this already, but what if KHP is used to titrate the NaOH. In this
asked by Sandy 
Stats
Let the random variable X be a random number with the uniform density curve given below. P(0.6 < X < 0.9) is
asked by Tracy 
algebra
The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $310 for 140 mi and in June her cost was $450 for 700 mi. Assume that there is a linear relationship between the monthly cost C of driving
asked by tim 
physics
If the specific gravity of mercury is 13.6 and the atmospheric pressure is 70cm of mercury, what is the total pressure of gas supply in cm of water
asked by micheal 
survey math 140
a textbook search is considering 19 books for possible adoption. the committee has decided to select 5 of the 19 for furture consideration in how many way can id do so
asked by Anonymous 
algebra 1
A company manfactures an alarm clock. Three weeks ago the company had 250 on hand. Two weeks from now it will have 500. Assume the company will continue to make the clocks at the same rate.
asked by Anonymous 
maths natural log
In the beginning, only some white aigrettes live in a swamp. On a certain day, a group of black aigrettes migrate to the swamp. The population of the white aigrettes (W) and the black aigrettes (b)after t months are given by W= 1100e^(0.08t) and b= 800
asked by jasontt 
Physic Angular momentum and torque
What is the angular momentum of a 1.0kg uniform cylindrical grinding wheel of radius 19cm when rotating at 1700rpm ?How much torque is required to stop it in 4.6s ?
asked by David 
probability
A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles?
asked by Matt 
Finance
You borrow $150,000 to purchase a new house. The bank offers you a special 20 year loan with a 7% interest rate and you will make annual payments. How large will each payment be? If you want to sell your house after 7 years, how much will you owe and need
asked by Donald 
Chemistry  Solubility
1.a) What did you observe upon the addition of NH3 (aq) to the magnesium chloride solution? Explain using relevant chemical reactions. I observed a colorless liquid. (Not sure how to explain) b) What happens when NH4Cl was added? Explain observation with
asked by HelpThankYou 
us history
Explain how wwII promoted an awareness of the links between racism in the US and coloniasm around the world. (in a long essay please)
asked by Catherine 
To Steve
Sorry here is completed question A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? 1 Randomly choose a marble don't replace
asked by Matt 
Law
can someone explain to me what the term Libel by Implication means? does it mean like libel my suggestion/ insinuation?
asked by Blaze 
Trig
In ΔABC, a = 19, c = 10, and m∠A = 111. Which statement can be used to find the value of C?
asked by Kiki 
health
Below are descriptions about the programs that are designed to help prevent suicide. Which statement is true? A. CBT because it teaches the skills needed to deal better with upsetting situations. B. DBT, sometimes called collaborative care management, uses
asked by mix_lks 
Physic
Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
asked by Charles 
Statistics
Which of these statements is always true for a researcher who is using standard statistical methods in a test of significance? A. A researcher who rejects a true null hypothesis has committed a Type II error. B. A researcher who rejects the null hypothesis
asked by John 
Trig
What is the total number of solutions for the equation 3 tan^2 A + tan A – 2 = 0 in the interval. 0 ≤ A ≤ π?
asked by Kiki 
math
A bag contains 3 red marbles, 3 blue marbles and 3 yellow marbles. Which of the following methods of selecting 2 marbles will have the greater probability of choosing 2 red marbles? Randomly choose a marble don't replace it then randomly choose another
asked by Matt 
Chemistry
What did you observe after the addition of dilute HCl to the saturated lead chloride solution? Explain observations using relevant chemical reaction. I observed that a white precipitate was formed. Not sure how to explain why it formed
asked by PleaseHelp 
Finance
Mark has won a contest in which he will receive $10,000 at the end of each of the next 10 years and then $20,000 a year for the next 30 years after that. With an 8% discount rate, what is the present value of Mark's prize?
asked by Donald 
english
Think about the figurative language in this stanza. What is the speaker saying? (1 point) It is hard to find your way at night because it is dark. It is the middle of the night and she is hungry. People find life in being with others. People have to help
asked by james 
Chemistry
I am thrown off by this question because they don't give a molecule to work with. Also i don't know how i would work the acid... help! A 195 mL solution of a dilute acid is added to 102 mL of a base solution in a coffeecup calorimeter. The temperature of
asked by Ali 
chemistry
how many mL of 1M HCL is used to make: 100mL of 0.1M hcl 250Ml OF 0.5M hcl 10Ml OF 0.01m hcl
asked by Tammy 
Statistics
Sorry to ask another question but I keep struggling with this class. If all else remains the same, which of these will make a confidence interval for a proportion narrower? I. Increase the confidence level. II. Increase the sample size. III. Increase the
asked by John 
physics
Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light heats her hand. The light bounces off the pages of a book and into her eyes. If this room is a closed system, what happens to
asked by Help 
Chemistry  Solubility Product
What did you observe after the addition of dilute HCl to the saturated lead chloride solution? Explain observations using relevant chemical reaction. I observed that a white precipitate was formed. Not sure how to explain why it formed
asked by PleaseHelp 
Finance
Jared has decided that he wants to build enough retirement wealth that, if he invests at 8% per year (compounded monthly), will provide him with $3,500 of monthly income for 30 years. To date, he has saved nothing, but he still has 25 years until he
asked by Donald 
math
you have a 2.5 od pipe can you get the same flow from two 1.and a quarter od pipe
asked by billy 
math
if 1/2 years ago adam was 12, and 1/2x years from now he will be 2x years old, how old will he be 3x years from now
asked by Leona 
Health
What causes depression? A. Genetic issues B. Biochemical issues C. There is no known cause D. Environmental issues
asked by mix_lks 
helth
Which symptoms are more common in depressed children and adolescents than in adults with depression? A. Fears of separation B. Reluctance to meet people C. General aches and pains D. All of the above b?
asked by mix_lks 
math
If true, prove. If false, provide just a counterexample: a. For every function f from nonnegative integers into nonnegative reals, o( f ) = O( f ) −Θ( f ) . (Here, ““ denotes the set difference: A – B consists of elements in A that are not in
asked by huing 
chemistry
what is the lewis structure for Nbromosuccinimide?
asked by Mai 
algebra
Solve the following rational inequality. Write the solution in interval notation. Show the number line and breaking points or graph of the polynomial with the part of the graph that is the solution (x4)(x+2)/(x3)(x+5) ¡Ü 0
asked by james 
Social Studies
Identify two problems resulting from urban sprawl in the western region of the United States. If these problems are not solved, what will the outcome likely be? Pls i really need help D:
asked by George 
Physics
How much is the acceleration of a baseball thrown by a pitcher in a major league baseball game, if the ball goes from 0 to 90 mph in a onehalfsecond time period?
asked by Reggie 
math
Solve this equation for x Log3^2x+5 =1
asked by Lindsay 
research help/ law
How is Japan's libel law different from the U.S. Can anyone provide me with some helpful Websites, it can't be wikipedia or the encyclopedia. I'm having difficulty finding useful sites.
asked by Blaze 
Help!! Physics
What capacitance in needed in series with an 785 µH inductor to form a circuit that radiates a wavelength of 199 m?
asked by S 
Physic Moment of inertia
Determine the moment of inertia of a 11.1kg sphere of radius 0.794m when the axis of rotation is through its center.
asked by David 
teaching
How would you incorporate logic and experimentation into your curriculum and still emphasize Native American thinking into your curriculum? For example a science teacher could have students monitor and document the phases of the moon by dates and write
asked by Dave 
Calculus
When dy/dx=(x6)^½ what does y equal?
asked by Eric