Friday
November 21, 2014

Posts by JEFF


Total # Posts: 634

Statistics
A sociologist is interested in the relations between x = number of job changes and y = annual salary (in thousands of dollars) for people living in the Nashville area. A random sample of 10 people employed in Nashville provided the following information. x (Number of job ...
July 21, 2012

Math
Jeff is changing the shape of his sandbox from 10 feet long by 12 feet wide to a square that has the same area. What is the perimeter of the square sandbox, rounded to the nearest hundredth?
July 16, 2012

statistics
the mean IQ of statistics teachers is greater than 110. write the existing state and alternative hypotheses.
July 5, 2012

statistics
how can you reword these research hypotheses to null hypotheses: a. smoking during pregnancy increases the risk of a child being born prematurely. b. regular exercise in older adults decreases blood pressure levels.
July 5, 2012

math statistics
create a null hypothesis on these research questions: a. what are the differences between emergency room shifts on medication errors? b. On a clinical trial of a new drug what will be the effects over a currently used drug?
July 5, 2012

algebra
I do not know where to start with this one. Suppose p varies directly as the square of z and inversely as r. If p = 32/5 when z = 4 and r = 10, find p when z = 3 and r = 36.
June 24, 2012

St. John
What is the greatest 7 digit number without repeating any digit
June 24, 2012

General Chemistry
substituting all values in the above discussion would yield 131.25 g/mol. This element is Xenon. :D
June 20, 2012

Social Studies
3. At the Constitutional Convention in Philadelphia, Madison drafted the plan presented by Virginia Governor Randolph, and William Patterson of _______ presented a plan that was similar to the Articles of Confederation. A. Pennsylvania B. South Carolina C. Massachusetts D. New...
June 14, 2012

Chemistry
What mass of KClO3 must be decomposed to KCl and O2 to give 638ml O2 at 18 degrees Celcius and 752torr?
June 11, 2012

world geography
5. Medinas capture the unique historical character and social patterns of cities in North Africa and Southwest Asia. Labyrinths of winding alleys and many kinds of souks are typical features. What are souks? A. Sacred sites B. Ethnic quarters C. Bordellos D. Commercial areas
May 30, 2012

trig
solve equation for the exact solutions if possible put answer in degrees. 2tanx/3-tan^2x=1
May 30, 2012

math
is (0,4)a solution to y=6-2x?.Explain
May 9, 2012

math
Carlos hiked 1 and 3/4 miles along a nature trail to a fork in the trial. He than hiked 2 and 1/2 along a path that led to a waterfall. When carlos reached the waterfall, how far had he hiked altogether?
May 7, 2012

physics
AM radio signals are electromagnetic waves transmitted between frequencies of 550 kHz and 1600 kHz. Find the range of wavelengths for these signals. largest ___m smallest___m
April 16, 2012

Math
A simple dartboard has three areas the main board has a radius of 9 inches there is a circle with a radius of 5 inches ans the bullseye has a radius of 3 inches What is the proability of a random dart landing inside the bullseye Round to the nearest 1000th
April 16, 2012

physics please help!
thank you!
April 15, 2012

physics please help!
find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air
April 15, 2012

physics
Explain the Doppler Effect?
April 12, 2012

science
2. An electric fan having a radius of 0.5 m is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 83.8 rad/s in 17.5 s. the deceleration is 42.0 rad/s2. Determine a) The initial angular speed of the fan b) the linear speed of a point on...
April 11, 2012

math
solve each triangle. A=45,a=24,b=13
March 28, 2012

Chemistry
Empirical formula 12.67 aluminum, 19.73 nitrogen, 67.60 oxygen
March 26, 2012

chemistry
complete KH2PO4(aq)+KOH(aq)
March 16, 2012

physics
On a wet racetrack, the maximum safe speed, to avoid sliding on a level circular curve with a radius of curvature of 56 m, is 73 km/hr. What is the coefficient of friction between the car's tires and the track surface?
March 12, 2012

Statistics
A 82% confidence interval for a sampling distribution with a mean of 100, a sample standard deviation of 24 and a sample size of 36 will be based on a á= ______ and a corresponding Zá of ___
March 5, 2012

Statistics
A 82% confidence interval for a sampling distribution with a mean of 100, a sample standard deviation of 24 and a sample size of 36 will be based on a á= ______ and a corresponding Zá of ___
March 5, 2012

chemistry
Calculate pH for strong base solution: 15.0 mL of 1.20×10^−2 M Ca(OH)2 diluted to 460.0 mL
February 26, 2012

Psychological Statistics
A random selection of files from a student counseling center revealed the following reasons why college students seek services: Mental health issues 25 Learning/school issues 15 Relationship issues 5 Other 5 What does it mean to say the files were randomly selected? How would ...
February 16, 2012

business mathematics
What is the cash discount and net amount paid if the gross amount of the invoice or freight paid is 7000$, freight charged is 100$, date of invoice is 4/8, terms of service is 2/10, n/60, and date of payment is 4/15?
February 13, 2012

Physics
A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V. (C is the capacitance and U is the stored energy.) Answer the following questions regarding the capacitor charged by a battery. For ...
February 6, 2012

CHEMISTRY
DRAW LEWIS, KEKULE AND SKELETAL STRUCTURE OF: (CH3)2NCH2CH3
January 25, 2012

STADISTIC
Did you get this answer???
December 8, 2011

Physics
A 48 g ball is released from rest at h = 1.4 m above the bottom of the track shown in the figure below. It rolls down a straight 30° segment, then back up a parabolic segment whose shape is given by y = 1/4 x2, where x and y are in m. How high will the ball go on the right...
December 5, 2011

math
How many 4-digit numbers can be formed using the numbers 5, 6, 7 and 8? How many of the 4-digit numbers are less than 7000?
November 27, 2011

Chemistry
Nickel carbonyl has a formula: Ni(CO)4. Nickel carbonyl is produced by the reaction of solid nickel metal with carbon monoxide gas. 1. how do you write a balanced equation for this reaction? 2. How many liters of carbon monoxide gas must be provided to react with 5.00g of ...
November 19, 2011

Chemistry
It does not have anything by the cc.
November 19, 2011

Math
What is the greatest odd number that uses digits 3, 4, 5 once each?
November 11, 2011

s.s
Ms. Sue, no offense, but stop making assumptions you can't justify. How do you know it's a wild-guess answer? That's insulting their intelligence.
November 2, 2011

Math/DataSets
I am looking for a good problem about data sets. Something along the lines of having to crtically look at a large chart of numbers and glean the appropriate ones. Make sense?
November 2, 2011

Calculus
If a_n does not equal zero for any n>=1 and ∑a_n converges absolutely, then ∑ 1/|a_n| diverges. The series are from n=1 to infinity. I think this is true but I'm not sure.
October 20, 2011

physics
In a movie a character jumps off a balcony at an angel of 25 degree 10 meters above the ground and land in a window that is 5 meters away and 9 meters above the ground. What is the intial velocity?
October 6, 2011

Spanish 9th grade
Is this how I say the spider is smaller than the lizard? La araña es más pequeña que la iguana.
October 5, 2011

math
80
October 4, 2011

Chemistry
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
October 1, 2011

Science
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
October 1, 2011

help please!:)
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
October 1, 2011

Physical Science
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
September 30, 2011

earth
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
September 29, 2011

chemistry
How many milliliters of a stock solution of 5.40 M HNO_3 would you have to use to prepare 0.150 L of 0.510 M HNO_3?
September 27, 2011

physics
Two boxes sit side-by-side on a smooth horizontal surface. The lighter box has a mass of 5.18 kg, the heavier box has a mass of 7.51 kg. (a) Find the contact force between these boxes when a horizontal force of 3.9 N is applied to the light box.
September 26, 2011

US history
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
September 25, 2011

Programming Logic
Programmign Logic for business Modify the PROCESS routine in Section 5.4 to determine whether the student is full time or part time before checking whether he or she lives in district or out of district. Use a flowchart and pseudocode to show your solution. Here
September 19, 2011

INFORMATION SCIENCE
Modify the PROCESS routine in Section 5.4 to determine whether the student is full time or part time before checking whether he or she lives in district or out of district. Use a flowchart and pseudocode to show your solution. Here
September 19, 2011

Chemistry
Consider the following unbalanced reaction. P4(s) + F2(g)---> PF3(g) How many grams of F2 are needed to produce 114 g of PF3 if the reaction has a 80.3% yield? I've worked it every way I can think, and the online grader says I am wrong. Someone plz lend me a hand.
September 13, 2011

physics
A fishtank with inside dimensions of 30.5 cm X 61 cm X 30.5 cm is filled with water. What is the volume in cm3 of water required? What is the mass in grams of the water required? What is the mass in kilograms? The fishtank above measures 1 ft X 2 ft X 1 ft in English ...
September 12, 2011

physics
A fishtank with inside dimensions of 30.5 cm X 61 cm X 30.5 cm is filled with water. What is the volume in cm3 of water required? What is the mass in grams of the water required? What is the mass in kilograms?
September 12, 2011

chemistry
How much NaC3H5O3 (in grams) is needed to create a 1000 ml volume of Ringer’s lactate solution?
September 8, 2011

biology
How much NaC3H5O3 (in grams) is needed to create a 1000 ml volume of Ringer’s lactate solution?
September 8, 2011

physics
A rock is dropped from a 154-m-high cliff. How long does it take to fall (a) the first 77.0 m and (b) the second 77.0 m?
September 7, 2011

physics
A person is to run a circular track with a radius of 93 meters. The person starts at a certain spot and runs 3 and 1/2 times around the track in a time of 227 seconds. Find the magnitude of average velocity for this trip (|vav|) and find the average speed for this trip. Then ...
September 1, 2011

Henry3
What is it?
September 1, 2011

Henry3
Suppose someone invents a new unit of length called a zizzle. If 3.5 zizzles = 1 meter, what is 11.9 zizzles/s in km/hour?
September 1, 2011

physics
Which of the following equations is dimensionally consistent? A. a3 = 1.2 (v/t)3 + 0.2 x3/t6 + 1.5 v4/x3 B. a3 = 1.2 (v/t)3 + 0.2 x2/t6 +3 v6/x3 C. a3 = 1.2 (v/t)3 + 0.2 x3/t6 - 1.5 v6/x3 D. a3 = 1.5 (v/t)2 + 0.2 x3/t6 - 1.5 v6/x3
September 1, 2011

Chemistry
Frank Steelman Office: Phone or Course Chat Office Hours: By appointment - as needed by the student. Phone: 609-204-0359
August 31, 2011

early childhood education
1. Small group discussions with preschools enables them to: A. Find out if they are superior B. Learn to argue C. Outsmart the others and gain teachers attention D. Compare their ideas with peer ideas I choose D 2. Children with many experience with stories: A. Can accurately ...
August 16, 2011

Math
A conical tank (with its vertex down) is 8 feet tall and 6 feet across its diameter. If water is flowing into the tank at the rate of 2 feet3/min, find the rate at which the water level is rising at the instant when the water depth is 2.5 feet.
July 31, 2011

calculus
A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.
July 30, 2011

calculus
6. A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.
July 30, 2011

calculus
7. A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cut-out square so that the box has the ...
July 30, 2011

Behavioral Science
what is the most divisive issue that is fueling the controversy over Affirmative Action
July 13, 2011

Civics
You should not put it that way because the current method is in-hu-main. Just one type and that is used at animal clinics.
July 6, 2011

Operations Management
Joe Henry's machine shop uses 2,500 brackets during the course of a year. These brackets are purchased from a supplier 90 miles away. the following information is known about the brackets. annual demand 2,500 holding cost per bracket per year $1.50 order cost per order $18...
July 6, 2011

Calculus 2
A cone is filled w/ freshwater (w=62.4 lb/ft^3). Determine the total force on the inside of the cone. Height of 10 and base of 12.
June 29, 2011

math
2 5/8 * 24 * 6 2/3
June 27, 2011

alg II
how do you solve this equation 2 cos pi x = 4x + 5
June 16, 2011

math
it is the cost of the item.
June 7, 2011

math
what is a 40% mark up on an item that costs-$38.00?
June 7, 2011

Little River
Jack and Jill invented a Trivia game in which a player can score 0,6 or 11 points on each turn.each player must take at least one turn.write an equation for a total score of 45 points in the game.
May 22, 2011

chemistry
A galvanic cell has an iron electrode in contact with 0.20 M FeSO4 and a copper electrode in contact with a CuSO4 solution. If the measured cell potential at 25 degrees Celcius is 0.61 V , what is the concentration of Cu2+ in the CuSO4 solution?
May 17, 2011

physics ( help)
First of all your initial vertical velocity is not 4.5 m/s. it is Viy= 4.5 * sin(30) and your horizontal = 4.5 * cos(30)
April 25, 2011

Algebra
sqrt(55) -sqrt(1/55)+sqrt(5/11)=?
April 10, 2011

English
Not sure that you need that dash in "already-significant" In the end, change "help" to "helping." Better yet, you could say "I'm looking forward to contributing to the success of your company."
April 10, 2011

Algebra
sqrt(55)-sqrt(1/55)+sqrt(5/11)=?
April 10, 2011

Algebra
I am racking my brain trying to figure out how to work this: the square root of 55 minus the square root of one over 55 plus the square root of 5 over 11. Do I use conjugates? Ahhhh!
April 10, 2011

geo 2
if ABCD is a square and DB is equal to 12 cm, then AC is equal to 6 cm.
March 31, 2011

math
simplify 9-(6+4v) & 7(p-10)-7
March 22, 2011

econ
A bumper crop of farm products causes: 1) only a slight decline in the price of farm products because the demand for farm products is income inelastic. 2) a large decline in the price of farm products because the demand for farm products is price inelastic. 3) only a slight ...
March 13, 2011

math
Find the set that describes the intersection of each pair of sets: a. C={people who are more than 20 years old}. D={people who are enrolled in college}. b. A={4,6,8}, B={2,4}. c. E={the odd whole numbers}, F={the even whole numbers greater than 40}.
March 3, 2011

Chemistry
I need to duplicate the strength of lye made from wood ash dissolved in water (Potassium Hydroxide) to that of lye made from Sodium Hydroxide disolved in water. The soap recipes I use require lye of various strengths as determined by fluid volume of water combined with the ...
February 28, 2011

Chem
I need to duplicate the strength of lye made from wood ash dissolved in water (Potassium Hydroxide) to that of lye made from Sodium Hydroxide disolved in water. The soap recipes I use require lye of various strengths as determined by fluid volume of water combined with the ...
February 28, 2011

Chem
I know how to make soap, using lye. I want to be able to make the lye solution from wood ash be the same ph as commercial lye. I think this can be done using the ph of sodium hydroxide in water as I first stated. Is it possible to compute this ph.
February 28, 2011

Chem
What is the PH range between 58 grams and 87 grams of Sodium Hydroxide in 6 oz by volume of water. What is the PH range of that amount of Sodium Hydroxide in 8 oz of water. I need this information to learn to make soap using wood ash.
February 28, 2011

AP Physics
The initial kinetic energy imparted to a 0.72 kg bullet is 1777 J.The acceleration of gravity is 9.81 m/s2. Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained. Answer in units of km.
February 26, 2011

Ma
Autoparts Inc. produces three types of parts' assemblies: (P,Q,R)and they each require (2,5,3) units of work on machine I and (2,2,4) units of work on machine II respectively. The two machines have respectively (160,190) units of work available per day. It is given that ...
February 26, 2011

AP Physics
27. a)In the 1950’s, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that produced a thrust of 4.37× 10^5 N for a distance of 465 m.Find the work done on the train. Answer in units of J. b)Find the change in kinetic...
February 26, 2011

AP Physics
22. a)You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.19 m and the cannon is aimed at a 32 angle from the ...
February 26, 2011

AP Physics
A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the student to overcome gravity is most nearly 1. P = 560 W. 2. P = 87.5 W. 3. P = 5, 600 W. 4. P = 1.1 W. 5. P = 875 W.
February 26, 2011

AP Physics
15. A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0 with the horizontal, as shown in the figure. The acceleration of gravity is 9.81 m/s2. If the coefficient of kinetic friction between the block and...
February 26, 2011

AP Physics
6. a)A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s. Find the work done on the car in this time.Answer in units of J. b)Find the average power delivered by the engine in the first 1.768 s. Answer in units of W. c)Find the instantaneous power delivered by ...
February 26, 2011

ap Physics
1. a)A 15.6 kg block is dragged over a rough, horizontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234.Find the work done by the 72.2 N force.The ...
February 26, 2011

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