# Posts by JEFF

Total # Posts: 868

physics
A particle travels between two parallel vertical walls separated by 11 m. It moves toward the opposing wall at a constant rate of 5.2 m/s. It hits the opposite wall at the same height. The acceleration of gravity is 9.8 m/s2. a) What will be its speed when it hits the opposing...

chemistry
The speed of a substance is 13.056 m/s. What is the speed in cm/Ms??

geology
14

math
This question must have been written by someone with a weak command of English. It is a truly terrible question. The "grouping" should have been by section. Based on the wording (and a common understanding of English) there is no reason to find that there are three ...

algebra
Write an algebraic rule to describe the relationship in each table

physics
The original problem asked for the velocity at t= 1s of the position x(t)= 5sin(pt + p/3). Take the derivative of the position function dx(t) = v(t) = 5pCos(p + p/3) v(t) = -5*p*Cos(p + p/3) v(t) = -7.9 The negative sign is part of the equation for the angular frequency of the...

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 ...

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?

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

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.

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?

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.

St. John
What is the greatest 7 digit number without repeating any digit

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

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...

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

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

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

Earth Science
82437097235

Pre-algebra
a number

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

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?

math
that why i asked you

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

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

thank you!

find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air

physics
Explain the Doppler Effect?

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...

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

Chemistry
Empirical formula 12.67 aluminum, 19.73 nitrogen, 67.60 oxygen

chemistry
complete KH2PO4(aq)+KOH(aq)

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?

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 ___

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 ___

calculus
no clue

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

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 ...

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?

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 ...

Biology
Fifiif

Chemistry
i know nothing

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

Math Riddle-Algebra With Pizzaz
4a-9(3- A)

Did you get this answer???

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...

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?

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 ...

Chemistry
It does not have anything by the cc.

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

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.

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?

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.

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?

chem
I am lost on how to write the half reactions for the oxidation and reduction parts.Thank you

Is this how I say the spider is smaller than the lizard? La araña es más pequeña que la iguana.

math
80

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

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

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

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

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

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?

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.

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

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

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

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.

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 ...

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?

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

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

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?

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 ...

Henry3
What is it?

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?

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

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

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 ...

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.

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.

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.

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 ...

Behavioral Science
what is the most divisive issue that is fueling the controversy over Affirmative Action

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.

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...

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.

math
2 5/8 * 24 * 6 2/3

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

Science
no

math
it is the cost of the item.

math
what is a 40% mark up on an item that costs-\$38.00?

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.

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?

trig confused.. pls help
convert km to meter. 1km = 1,000 meters. therefore, 4.81km = 4,810 meters

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)

Algebra
sqrt(55) -sqrt(1/55)+sqrt(5/11)=?

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."

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