Saturday
April 19, 2014

Posts by KEVIN


Total # Posts: 905

chemistry
How do you find the moler mass of a compound like H2O?

math
What is the volume of a cylinder with radius 8km and height 7km?

physics
A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally skating. What is the spee...

math
14 x 6 / 28

IT/210
I don't know how to upload the text book

IT/210
Assignment: Chapter 5 Programming Problems · Complete Programming Problems 1 and 2. · Provide the analysis, pseudocode and test cases using the template submitted in Week 6 only (no diagrams are required). Chapter 5 Programming Problem Maximum Points Analysis 20 ...

Physics
Two balls, each with a mass of 0.819 kg, exert a gravitational force of 8.76 × 10^−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10−11 Nm2/kg2. Answer in units of m.

science
what is an independent variable

Chemistry
The oxidation state for solid iron is 0 True False

Physics
While watching ocean waves at the dock of the bay, Otis notices that 13 waves pass beneath him in 26 seconds. He also notices that the crests of successive waves exactly coincide with the posts that are 5 meters apart. What are the period, frequency, wavelength, and speed of t...

Physics
A nichrome wire has a radius of 0.50 mm and a resistivity of 1.5 ´ 10‑6 W‑m. What is the resistance per unit length of this wire?

Chemistry
In general, the orders (exponents) in a rate law can turn out to be positive or negative rational numbers, so -1 is a possibility.

economics
Which of the following is given as a reason for nations NOT to engage in free trade? A) Free trade gives consumers access to goods they might not otherwise be able to consume B) Tariffs are a good source of revenue for a nation C) Trade is shown to promote peace among nations ...

Physics
Two objects attract each other gravitationally with a force of 2.3×10−10 when they are 0.21 apart. Their total mass is 4.50 . Find their individual masses.

statistics
I need to prove this σ(hat)^2(x,y) = (1/n) Σ (Xi - X (bar) ) Yi using σ(hat)^2(x,y)= (1/n) Σ (Xi - X(bar)) (Yi-Y(bar)) and X(bar)= (1/n) Σ Xi σ(hat)^2 (x,y) is the estimator of covariance

physics
A block of mass m is dropped from the fourth floor of an office building and hits the sidewalk below at speed v. From what floor should the mass be dropped to double that impact speed?

programming in c
write a program to compute in centimeters of a steel rod

physics
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 118-kg laser sensor that measures the thickness of the ice (see the drawing). The helicopter and the sensor both move only in the horizontal direction and have a horizontal acceleration of m...

math
816 357 492

Physics
A 2.0 kg ball and a 3.5 kg ball are connected by a 2.0 m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 21 rpm . What torque will bring the balls to a halt in 6.0s?

economics
How would you illustrate the impact of each of the following events on a production possibilities curve for factory goods and farm goods? (a) the computer is invented (b) 1 million farm workers remain unemployed for six months (c) a drought

physics
If an impulse of 60 Ns is required to stop and object, list in your log three force and time combinations that can stop an object.

Chemistry
How much energy (in kilojoules) is released when 12.8 g of steam at 130.0 C is condensed to give liquid water at 73.5 C? The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K*Mol)for the liquid and 33.6 J/(K*Mol) for the vapor.

Probation
Write a 750- to 1,000-word paper in APA format in which you assess the effectiveness of probation. In your paper you must address the following: •Define probation as a sentence. •Explain the probation process. •Explain your findings within each researched item a...

mat h
ms. buxx invested a total of $2000 in two savings accounts. The first account pays 3% interest per year and the second account pays 5% interest per yera. If the interest from both accounts totals $84 per yera, how much is invested in each account?

physics
A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it takes the police offic...

physics
A motorist drives along a straight road at a constant speed of 15.0 m/s. just as she passes a parked police officer,the officer starts to accelerate at 2.00 m/s^2 to overtake her. assuming the officer maintains this acceleration, a) determine the time it takes the police offic...

Fin- Management
$5.17

Fin- Management
David purchased a $100,000 participating whole life policy. The annual premium is $2,280. Projected dividends for the first 20 years are $15,624. The cash value after 20 years will be $35,260. If the premiums were invested at 5 percent for 20 years, the premiums would grow to ...

Statistics
a player have to pick six number from 1 to 30 how many diffrent choice does the player have

ChemistryDrBob222
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....

ChemistryDrBob222
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1...

math
A matrix A is said to be skew symmetric if A^T = -A. Show that is a matrix is skew symmetric then its diagonal entries must all be 0. A^T meant to be A transpose.

math
give two ways to show dollar to 2.65?

Chemistry
Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....

art history
name four concepts or subjects on which renaissance artists based their works

5th grade math
Please help with estimate and calculate quotients. I do not understand what magnitude estimate is and to circle a box between 0.1s 1s 10s 100s examples of what i mean are 6/78.6 3/387 29.52 divided by 8 989 divided by 43 845 divided by 5 15.94 divided by 9 please help

math
fill in the blanks with the numbers so that the statement is true 2,3,4,7 (_ + _)2 + _ x _ = 53

Finance
A U.S.-based firm is planning to make an investment in Europe. The firm estimates that the project will generate cash flows of 200,000 euros after one year. If the one-year forward exchange rate is $1.40/euro and the dollar cost of capital is 9%, what is the present value (PV)...

Gen Chemistry
The following absorption data of a solution was collected in a cell with 1 cm path length. The absorption of the same substance in a solution with unknown concentration was 0.197. What is the concentration of the unknown substance? c (M) A 1.00x10-3 0.119 2.00x10-3 0.243 3.00x...

Gen Chemistry
i got the moles of Ca3(PO4)2=0.01275549 but how do i covert that to moles of CaCl2? using the stoichiometric ratio which is 1:1 or am i doing something wrong

Gen Chemistry
i got the moles of Ca3(PO4)2=0.01275549 but how do i covert that to moles of CaCl2? using the stoichiometric ratio which is 1:1 or am i doing something wrong

Gen Chemistry
52.8 mL of a calcium chloride solution with unknown concentration was treated with phosphoric acid to remove all of the calcium ions in the form of a precipitate. The precipitate was filtered, dried and was found to have the mass of 3.9565 g. What was the concentration of the ...

chemistry Molarity
You have 353 mL of a 1.25 M potassium Chloride solution, but you need to make a 0.50 M potassium Chloride solution. How many milliliters of water must you add to the original 1.25 M solution to make the 0.50 M potassium Chloride solution

College Chemistry Really Need Help
THE EQUILIBRIUM CONSTANT FOR A REACTION IS 2.48 AT 25 DEGREES CELSIUS. WHAT IS THE VALUE OF ΔG°(KJ)AT THIS TEMPERATURE? (R=8.314 J/K mol)

Algebra
Why do some regressions models give you r and some give you r squared? What does r squared tell you? If you take the square root of r squared for a model and get a number close to one does that mean that the closer the square root of r squared to one, it is the better model?

chemistry
describe the formation of a sr ion as its bons with chlorine to form SrCl2 and properties the compound will posess

physics
A box slides down a 33° ramp with an acceleration of 1.38 m/s2. Determine the coefficient of kinetic friction between the box and the ramp.

physics
Thank You!

physics
A skater spinning with angular speed of 1.5 rad/s draws in her outstretched arms thereby reducing her moment of inertia by a factor a 3. a) Find her final angular speed. b)What is the ratio of her final angular momentum to her initial angular momentum? c) Determine the ratio o...

physics
A 4.5 kg bag of groceries is in equilibrium on an incline of angle θ = 55°. Find the normal force of the incline on the bag.

Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the gravity force, find th...

Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5s. Through how many revolutions did the wheel turn during the 5s of braking?

Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the gravity force, find the...

Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5 s of braking? I tri...

Finance
Gemini Real Estate is offered a $2 million line of credit for four months at an APR of 9%. This loan has a loan origination fee of 1.5%. What is the actual four-month interest rate paid, expressed as an EAR

Finance
Crimini Foods is offered a $400,000 line of credit for six months at an APR of 10%. This loan has a loan origination fee of 2%. What is the actual six-month interest rate paid, expressed as an EAR

Finance
Carborundum Metals issues commercial paper with a face value of $1,000,000 and a maturity of three months. Carborundum receives net proceeds of $992,000 when it sells the paper. If the prime rate is 8% APR compounded quarterly, how much savings in interest did Carborundum real...

Physics
A 70 kg man just before contact with the ground has a speed of 5 m/s In a stiff-legged landing he comes to a halt in 7ms (miliseconds). Keeping in mind that the average net force acting on the man includes both the force of the ground on the man and the gravity force, find th...

Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5 s of braking? I trie...

FINANCE
Crimini Foods is offered a $400,000 line of credit for six months at an APR of 10%. This loan has a loan origination fee of 2%. What is the actual six-month interest rate paid, expressed as an EAR

FINANCE
Carborundum Metals issues commercial paper with a face value of $1,000,000 and a maturity of three months. Carborundum receives net proceeds of $992,000 when it sells the paper. If the prime rate is 8% APR compounded quarterly, how much savings in interest did Carborundum real...

FINANCE
Gemini Real Estate is offered a $2 million line of credit for four months at an APR of 9%. This loan has a loan origination fee of 1.5%. What is the actual four-month interest rate paid, expressed as an EAR

Finance
A firm issues three-month commercial paper with $200,000 face value and receives $192,000. What is the EAR the firm is paying for these funds? I WOULD BE HAPPY IF SOME ONE CAN RESPOND TO MY QUESTION IN NUMCERS.

Physics
A child rolls a ball on a level floor 3.4 m to another child. If the ball makes 9.0 revolutions, what is its diameter?

Math
A very strong girl runs 200 miles east for several hours. After a brief rest she runs another 100 miles north. She stops for the night at a local bed and breakfast and the next morning walks 75 miles directly south-east. Find the magnitude and direction of her displacement.

6th grade
well there are several anwers to this problem, actually. here they are: 6.0831 6.0832 6.0833 6.0834

Physics
find the deceleration of a cyclist reduces from 2.5m/s to 1.0 m/s in 12s?

Chemistry
1 torr = 0.001316 atm Do the conversion now. (.001316 atm/ 1 torr) x 832 torr. This cancels the torr unit and gives you the conversion into atm. 832 * .001316 = 1.094912 atm

Chemistry
1 pound per square inch = 0.0680459639 atm (.0608 atm / 1 psi) x 17.4 psi. This cancels the psi unit and gives your answer in atm.

Physics
A bicycle wheel of radius .7m is rolling without slipping on a horizontal surface with an angular speed of 2 rev/s when the cyclist begins to uniformly apply the brakes. The bicycle stops in 5 s. Through how many revolutions did the wheel turn during the 5 s of braking? I trie...

5 th grade English
stroll is to walk opposite of enormous can be small or tiny, you choose opposite of release can be throttle or suppress, you choose sorry i do not know the first one

8th grade
24 radical 152 is the same as 48 radical 38

british literature
no

Physics
A 2.60-kg block is attached to a horizontal spring that has a spring constant of 160. N/m. At the instant when the displacement of the spring from its unstrained length is -0.115 m, what is the acceleration a of the object?

Calculus
find the equation of a tangent line of x^(1/4) + y^(1/4) = 4 at the point (16,16)

Calculus Tangent lines
find the equation of a tangent line of x^(1/4) + y^(1/4) = 4 at the point (16,16)

Calculus
What are the antiderivites of x/ (x^2 (squareroot of x^4-1)) and 1/ (1+(x^2/4)) no idea :{

U.S. Presidents
Yeah i was typing that while before you posted a second time btw.

U.S. Presidents
Actually hes not anymore. Nolan Ryan and Chuck Greenberg are now the owners.

Physics
How much work must be done to stop a 970 kg car traveling at 115 km/h?

chemistry
suppose 10 g of sulfur is reacted with 48 g of fluorine gas to make SF6, and after the reaction is complete, the temperature in the flask is 125 C. Find the partial pressure of SF6 in the flask and the mole fraction of SF6 in the 6L flack after the reaction is complete.

Physics
Did you try velocity squared, then multiplied by the density?

Chemistry
A photon has a wavelength of 350 nm. Calculate the energy of the photon in joules

Chemistry
What is the frequency of light having a wavelength of 360 nm?

physics
A rock is dropped from a height of 130.0 meters. With what velocity does it land? How long does it take to fall?

Physics
A flat uniform circular disk (radius = 2.10 m, mass = 1.00 102 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 40.0-kg person, standing 1.00 m from the axis, begins to run on t...

Physics
A race car has a mass of 715 kg. It starts from rest and travels 38.0 m in 3.0 s. The car is uniformly accelerated during the entire time. What net force is exerted on it?

3rd grade
what number is 30 more than 432?

math
Suppose 4 days before the day after tomorrow was Thursday. What day of the week was yesterday?

8th grade
when a truck pulls a trailer the trailer and truck accelerate forward even though the action and reaction forces are the same size but are in oppsoite direction. Why don't these forces balance each other?

chem
what is the pH of a solution that is 0.40 M in sodium acetate and 0.60 M on acetic acid? (Ka for acetic acid is 1.85x10^-5.)

Calculus
Find the equation of the tangent line to the curve (a lemniscate) 2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( -3 , -1 )

Algebra
a rectangle with perimeter of 198 cm is divided into 5 congruent rectangles. What is the perimeter of one of the five congruent rectangles? i got the expression 5w + 4L = 198 the rectangle has two smaller rectangle on the top facing horizontally on the top and three smaller re...

math
.52

stats
How many students must we sample if we want to be within 4% of the true proportion of female students at DeVry University when using a 95% confidence interval?

General Physics
The 5 kg block in the figure slides down a frictionless curved ramp, starting from rest at a height of h = 3 m. The block then slides d = 12 m on a rough horizontal surface before coming to rest.What is the coefficient of friction between the block and the horizontal surface?

7th grade
Max wants to hang a picture 2 3/4 inches above a desk. His ruler is marked in 1/16ths. Max must use which measurement to hangb the picture? A. 2 1/16inches B. 2 3/16inches C. 2 9/16inches D. 2 12/16inches

English 2
1. b

Physics
I have a very similar problem due on mastering physics in an hour.. I came here to get help but now 30 minutes later I'm actually going to be giving help :). Hopefully it wont be too late depending on your time zone. u= coefficient of static friction force of friction = u*...

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