# Posts by Kevin

Total # Posts: 1,248

**science**

so in other words, it took 1.5 hours to travel 150 km. Therefore, if you want velocity in km/hr it is 100 kilometers per hour.

**Calculating Averages?**

just throwing out a number because i'm bored: 55.8741 was what i got. I'm no chemist, but i wanted to take a shot at it and now i'm curious how close the real answer is to mine.

**Algebra 2**

A country's population in 1991 was 15 million. In 2001 it was 16 million. Estimate the population in 2005 using exponential growth formula. Round your answer to the nearest million.

**Calculus**

20

**PHYSICS**

A 54.0-cm diameter disk rotates with a constant angular acceleration of 2.0 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. Find the ...

**Economis**

How would you illustrate the impact of each of the following events on a production possibilities curve for factory goods and farm goods

**Economis**

Vf hhhh x bbr foto N hhhh xbx db f df

**Algebra II**

f(x)=1/(x+2)

**Algebra II**

Find x-intercepts y= x²-2 is it (-√2,0) (√2,0)?

**Algebra II**

solve using quadratic formula p²+5p-5=0

**spanish**

Su novio la mas increible?

**science**

What hypotheses could you test to help resolve the debate that famines are caused more by human actions (or inactions) than by environmental forces?

**math**

What's the force on a mans knees weighing 235 lbs falling from 8' landing on his feet on hard dirt be?

**precalc**

A is accumulated amount investing after p principal for t years at and interest rate of r compounded anually k is times per year. P=$1500, r= 7%, t=6 P=1500, r=7%,t=5,k=4 P=$1250, r=5.4%,t=6

**pre calculous**

use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms. show your work ln x^2/y^3 Assuming x,y AND z are positive use properties of logariths to write the expression as a single logarithm logx+log y 1/3logx 4 ...

**Chemistry**

What is the definition of Gay-Lussac's law?

**Chemistry**

What is the definition of Combined Gas Law? I can't find it in my book anywhere.

**lit**

is it c

**Claret Maths**

represent 555 in base 5

**English**

Identify the comma that separates the subject from the verb with a comma below All students who attend Madison High School, should do so without the feeling that they will be subject to harassment or threats based on their clothing. It is their right to feel safe and secure ...

**physics**

ah man. i've got this too. for anyone that can help, the fact that the electron moves at close to the speed of light and thus Einstein's theory of special relativity will effect any lengths (based on the reference point) has to be taken into account. i think. maybe not...

**chemistery**

how many grams of O2 will it take to Oxidize 88 grams of C3H8 to CO and H2O

**Law**

looking to ascertain what the liquid volume of 5 gallons of acetic anhydride is in pounds.

**JAVASCRIPT**

Start button won't work for a scolling marquee. Below is the javascript code. window.onload = defineMarquee; var timeID; var marqueeTxt = new Array; var marqueeOff = true; function defineMarquee() { var topValue = 0; var allElems = document.getElementsByTagName("*&...

**ap us history**

i wasn't asking for an answer, i was asking for a critique of the question i wrote for my project

**ap us history**

criticize my ap us history dbq question that i made for a project During the 1960s, the united states moved from indirect into direct involvement in the vietnam war in order to stop the spread of communism. In light of the following documents and your knowledge of the time ...

**Buisness Law**

What is the function of a negotiable instrument? Describe the essential elements of a negotiable instrument.

**math**

t=sin(2*t^3) get the t

**Managerial Accounting**

Determining and interpreting flexible budget variances Use the standard price and cost data supplied in problem 15-18. Assume that Holligan actually produced and sold 31,000 books. The actual sales price and costs incurred follow. Actual price and variable costs: Sales price $...

**chemistry**

Helps a bunch thank you.

**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 ...

**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**

All the same.

**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 ...

**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 ...

**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 ...

**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 ...

**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 ...

**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

**CHEMISTRY**

Well, you have to read the question carefully. It says aqueous solution of sodium ions, not sodium carbonate. So you have to divide 2.65g by 2. We use two in this question because there are 2 moles of Na in 1 mole of Na2CO3.

**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....

**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 ...

**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 ...

**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 ...

**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 ...

**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 ...

**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 ...

**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 ...

**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?