Monday
December 22, 2014

Posts by jeremy


Total # Posts: 252

Chemistry
I thought that was the case too, sorry if I am overthinking it and thank you!
November 22, 2014

Chemistry
An unknown metal with a mass of 260 g has a heat capacity of 100 J/oC. What is the specific heat of the metal? I am stuck finding the right equation, knowing that the mass is 260 g and heat is 100 J per Celsius. Thus, going with the equation, q=msT, the equation should fit in ...
November 22, 2014

math
Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1 + X) · E(1/1 + X)= 1. n→∞
November 15, 2014

statistics
Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1 + X) · E(1/1 + X)= 1. n→∞
November 15, 2014

statistics
Let X be a Binomial random variable with parameters n and 0 < p < 1. Show that lim E(1+X)·E(1+X)·E(1/1+X)=1. n→∞
November 15, 2014

Physics
A mass of 9.8 kg is moving in the positive x direction at 16.6 m/s and collides in a perfectly elastic, head on collision with a mass of 12.7 kg at rest. The same mass of 9.8 kg in the positive direction at 16.6 m/s also collides with the mass of 12.7 kg at rest in an ...
November 11, 2014

Chemistry
What is the molarity of a solution made by mixing 213.6 ml of 1.5 M NaCl with 328 ml of 4.3 M NaCl?
November 8, 2014

chemistry
Calculate the number of GRAMS of carbon dioxide (CO2) produced when 100 grams of methane (CH4) are completely burned in oxygen (O2).
October 29, 2014

physics
At a distance of 1 cm from the source, the flux from the isotropic source is one hundred times brighter. Which source is brighter fifty centimeters away? At what distance from the source are the two equally bright? Could you explain the theory behind the answers too? Isn't...
October 17, 2014

computers
In a 350 word written paper, using pseudocode, write a program on how you turn a corner in an automobile. Note that there is a stop sign in the intersection. Determine the logical steps involved and write the pseudocode. Consider the following questions when completing your ...
October 15, 2014

statistics
The Graduate Record Exam (GRE) has a combined verbal and quantitative mean of 1000 and a standard deviation of 200. Scores range from 200 to 1600 and are approximately normally distributed. What percentage score above 1300? What percentage score above 800? What percentage ...
September 21, 2014

algebra
Alicia finished the race 3.75 seconds befor Kaye. Donna finished the race5.09 seconds after Carmen. Carmen finished the race 10 second before Kaye. Anders finished 4.89 seconds after Kaye. How many seconds earlier did Carmen finish than Anders?
September 11, 2014

physics
What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04m ?
September 2, 2014

math
Ivanna is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges 114 and allows unlimited mileage. Company B has an initial fee of 65 and charges an additional 0.70 for every mile driven. For what ...
August 2, 2014

Chemistry 12
calculate the Ph of a solution composed of 0.75 grams of KOH dissolved in 500ml of water. assume total ionization.
June 27, 2014

Geometry
Martin wants to use coordinate geometry to prove that the opposite sides of a rectangle are congruent. He places parallelogram ABCD in the coordinate plane so that A is (0, 0), B is (a, 0), C is (a, b), and D is (0, b). What formula can he use to determine the distance from ...
May 19, 2014

Chemistry
calculate the concentration of the silver ion remaining in the solution when 10g of solid AgNO3 is added to 50 ml of 1x10-2 M NaCl solution.
May 18, 2014

new neutrich high school
what is the independent and dependent variable if in every 29 minutes jogging burns 200 calories?
May 9, 2014

Math
Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for each of the projects are given in the table below: ...
April 19, 2014

Finance
Capital Budgeting Problems I. Indigo Industrial, Inc. is trying to determine which, if any, of five different projects it should undertake. Indigo Industrial has a 8.25% required rate of return on projects that it undertakes. The projected cash flows for each of the projects ...
April 19, 2014

Algebra
What word told you to multiply 3 and pe and q and 2 instead of divide? and then why did you set them equal to each other?
March 8, 2014

Algebra
Also what kind of problem is this? a rate of change?
March 8, 2014

Algebra
On Monday, it took Helen 3 hours to do a page of science homework exercises. The next day she did the same number of exercises in 2 hours. If her average rate on Monday was p exercises per hour, what was her average rate the next day, in terms of p? I know that the answer is 3...
March 8, 2014

Math
How? Ann is painting a fence that is 8 1/4 times as wide as she is tall. If Ann is 5 1/2 feet tall, how many feet wide is the fence? I so confused???? Any help would be appreciated - Thank You
January 29, 2014

physics
Car A with a mass of 1250 kg, is traveling at 30 m/s to the east. Car B is a truck with a mass of 2000 kg, traveling to the west at 25 m/s. assume these two vehicles experience an inelastic collision but do not stick together, and car A goes off 10 m/s to the west. what will ...
January 5, 2014

physics
A cylinder is fitted with a piston that is connected to the bottom by a spring. The spring has a spring constant of k = 3600 N/m. The cylinder is open to air at the top and is frictionless. The radius of the cylinder is 25 mm and the piston has negligible mass. The air beneath...
November 21, 2013

math
A rectangular plot of land is to be seeded with grass if the plot is 22m X 28m and a 1kg bag of seed is needed for 85m^ of land how many bags of seeds are needed?
October 8, 2013

Computer
How do you solve this algorithm problem? Suppose that you are given a sequence of n elements to sort. The input sequence consists of n/k subsequences, each containing k elements. The elements in a given subsequence are all smaller than the elements in the succeeding ...
October 8, 2013

Statistics
Which of the following is not a source of caution in regression analysis between two variables? A) non-linear form. B) linear form. C) a lurking variable. D) an outlier. E) extrapolation. E?
September 22, 2013

Statistics
A golf ball is dropped from 15 different heights (in inches) and the height of the bounce is recorded (in inches.) The regression analysis gives the model y-hat = -0.4 + 0.70 (drop height) where y-hat is the predicted bounce height of the golf ball. A golf ball dropped from 71...
September 18, 2013

Math
A ⊆ B. Prove P(A|B)>= P(A)
September 17, 2013

math
a rectangular mosaic is made up of exactly 12 square tiles that have an area of 9 square inches each. If the width of the mosaic is 9 inches, what is the perimeter of the mosaic in inches
September 10, 2013

physics
A faint sound with an intensity of 10 -9 W/m2 is measured by an intensity-level meter. What will the reading be in dB?
May 26, 2013

chemistry
what is the change in temperature if 24g of water at 50 degrees C absorbs 985j of heat energy
April 19, 2013

Math
a 55 kg skateboarder on a 3 kg board starts coasting on level ground at 8 m/sec. Let k=3.2 kg/sec. About how far will the skater coast before reaching a complete stop?
March 27, 2013

Math
with x = hours at first job and y = hours at the second job y <= 25 - x which is the amount of hours you can work at the same time, y >= (150/8)- (5/8)x is the amount of money you want to make if you graph both of these equations, you can find the range you should use.
March 27, 2013

Chemistry
How do the following solutions show the properties of a buffer? 1) 50 ml 0.10 M NH3 + 50 ml 0.10 M NH4NO3 2) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M HCl 3) 10 ml solution #1 + 6 ml 0.10 M HCl 4) 10 ml solution #1 + 5 ml H2O + 1 ml 0.10 M NaOH
March 20, 2013

Math
Principal 450.00 x interest rate 9.25 x compounded monthly x 4 years
March 18, 2013

math
the letters g and g stand for numbers. if g + 9=h + 9, what is true about g and h?
March 18, 2013

precalculus
A rectangular field is to be enclosed by a fence and divided into three equal rectangular parts by two other fences. find the maximum area that can be enclosed and separated in this way with 1200m of fencing.
March 14, 2013

Physics
I'd like to know when it is appropriate to use each formula. Im new to studying physics and its seems that there are certain situations when one formula leads to the answer, yet a derivative of that formula that should lead to the answer is incorrect. For example: the ...
March 7, 2013

math 6
write an expression in terms of x for the perimeter of an isosceles triangle with 2 sides of 6 cm and a third side of 2x cm.
March 6, 2013

chemistry
What is the pH of pure water in equilibrium with 1 atmosphere of carbon dioxide at 25˚C? (Hint, what does 1 atmosphere of CO2 mean?)
March 6, 2013

math
Never mind, I guess I misinterpreted the problem because the radius actually does change
February 27, 2013

math
Gravel is being dumped from a conveyor belt at a rate of 40 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 22 feet high? Here are ...
February 27, 2013

calculus
F(x)= ln (cos theta) f'(x)
February 24, 2013

Calculus
Find an equation of the tangent line to the curve at the given point y^2 = x^3 (2-x) (1,1)
February 23, 2013

Chemistry
For the oxidation of glucose ( C6H12O6 + 2O2---6H2O +6CO2), how many moles of O2 will it take to consume 6 moles of glucose. Can someone explain it?
January 27, 2013

Chemistry
The nuclide 96Nb decays by a first-order process with a rate constant of 2.96 × 10-2 h-1. How long will it take for 85% of the initial amount of 96Nb to be consumed? I believe it is 5.07 hrs...
January 21, 2013

Chemistry
In the first order, reaction A yields products, A=0.400M initially and 0.250M after 15.0 min. What is the value of the rate constant, k?
January 21, 2013

Chemistry
Is the bond in the molecular orbital energy level diagram of Li2 stable?
December 4, 2012

Chemistry
Why does I2 have a higher boiling point than F2? And why does NH3 have a higher boiling point than PH3?
December 4, 2012

Physics
A fire hose 10 cm in diameter delivers water at the rate of 23 kg/s. The hose terminates in a nozzle 3.1 cm in diameter. (a) What is the flow speed in the hose? (b) What is the flow speed in the nozzle?
November 30, 2012

science
what needs to go out of a cell
November 29, 2012

Physics Word Problem
using Snell's Law (sin(theta1)/sin(theta2) = v1/v2 where (theta1) is the angle of incidence and (theta2) is the angle of refration. The number V1/V2 is called the index of refraction. The index of refraction from air to water is 4/3. If a ray of light passes through the ...
November 14, 2012

Physics Word Problem
using Snell's Law (sin(theta1)/sin(theta2) = v1/v2 where (theta1) is the angle of incidence and (theta2) is the angle of refration. The number V1/V2 is called the index of refraction. The index of refraction from air to water is 4/3. If a ray of light passes through the ...
November 14, 2012

Calculus
use implicit differentiation to find dy/dx if x^3+y^3=6xy
November 13, 2012

Calculus
use implicit differentiation to find dy/dx if x^3+y^3=6xy
November 13, 2012

science
How do you know a television change electricity into light energy? What other form energy is produced?
October 24, 2012

science
Where in nature could you find a source of the same energy as that provided by batteries? explain
October 24, 2012

Math
Use the elimination method to solve a+6b=14 and a+3b=5
October 18, 2012

Physics
A coil of 5 ohms resistance is connected to a battery whose E.M.F. is 6 volts. What current flows in the coil?
October 14, 2012

math
Your ladder is 26' long. The bottom of repunzel's window is 24 feet high. hOW FAR FROM THE TOWER SIDE SHOULD YOU PLACE THE BOTTOM OF YOUR LADDER TO RESCUE rA PUNZEL?
September 13, 2012

calculus maths
y=lnlog base2 x
September 13, 2012

Science.
You are carrying a 3.4 gallon jug full of cold water. Given that the water has a density of 1.0 grams per milliliter, and one gallon is equal to 3.8 liters, state the mass of the water in kilograms.
August 21, 2012

Science.
Assume a typical hummingbird has a lifespan of 4.0 years and an average heart rate of 1300 beats per minute. (a) Calculate the number of times a hummingbird's heart beats in its life, and express it in scientific notation. Use 365.24 days per year. (b) A long-lived ...
August 21, 2012

Science.
Sara has lived 18.0 years. How many seconds has she lived? Express the answer in scientific notation. Use 365.24 days per year for your calculations.
August 21, 2012

Science.
An atom of uranium-235 has a mass 235.043924 amu (atomic mass units). Using scientific notation, state the mass in amu of ten million such atoms.
August 21, 2012

Science.
Express 0.0000000000375 in scientific notation
August 21, 2012

Math
what is 2.15x10^5 miles per hour squared converted to meters per second squared?
August 20, 2012

Physics
What is the centripetal acceleration of the Moon? The period of the Moon's orbit about the Earth is 27.3 days, measured with respect to the fixed stars. The radius of the Moon's orbit is RM = 3.85 · 108 m.
June 14, 2012

physics
Which one of the following statements is true for two bodies having same kinetic energy but different masses? a. they have same velocity b. they have same momentum c. the momentum of smaller mass body is smaller than the other d. the momentum of smaller mass body is larger ...
June 14, 2012

Physics
Young acrobats are standing still on a circular horizontal platform suspended at the center. The origin of the two-dimensional Cartesian coordinate system is assumed to be at the center of the platform. A 30-kg acrobat is located at (4 m, 9 m), and a 36-kg acrobat is located ...
June 11, 2012

Physics
The answer is supposed to be 1.27e+06 mph, but I'm not sure how to solve for it.
June 6, 2012

Physics
How fast would a 9-g fly have to be traveling to slow a 1910-kg car traveling at 61 mph by 6 mph if the fly hit the car in a totally inelastic head-on collision? Could someone explain the steps, please?
June 6, 2012

Physics
An engine expends 44.0 hp in moving a car along a level track at a speed of 13.9 m/s. How large is the total force acting on the car in the opposite direction of the motion of the car?
May 28, 2012

Microeconomics
What has the video gaming industry done from a microeconomic perspective? Furthermore, analyze the gaming industry with a specific emphasis on jobs created by the gaming industry and how do they pay? How is it developing? What are the expectations, salary, and opportunities of...
April 30, 2012

Science
How can the parent rock or bedrock effect the environment?
April 28, 2012

Differential Calculus
y = 1 + (x-1)^(1/2) Considering the interval (2,4), calculate delta(y) and dy. would delta(y) be: delta(y) = f(4) - f(2) = (1 + squr(3) ) - 2 = squr(3) - 1 and dy is 1/(2 squr(x-1)) dx Thank you
April 27, 2012

Algebra
help me solve this exponential problem P to the 3rd power times q 5 over 2 all over q to the 2nd power times r to the negative 6.
April 24, 2012

Accounting
A woman would like to open a store in 8 years. She figures she will need 50,000 in capital to do so. She will make 10% on her money. a. How much would she need to invest today in one lump sum to end up with 50000 in 8 years? I got 23,325.25 b. if she's starting from ...
April 1, 2012

Chemistry
Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S
March 30, 2012

Chemistry
Rank the following ionic compounds by lattice energy. Highest to Lowest LiCl MgO Na2O Beo Na2S
March 30, 2012

Astronomy
You've been told the Earth puts out 0.070 [W/m squared] as a global average. What would you predict would be the surface heat flux in [W/m squared] from a planet that is 70% larger in radius than the Earth, but has the same bulk composition. You can assume the only source ...
March 28, 2012

physics
B=u0*I*N/L u0=4pi*10^-7 I= .61A N=240 L=.018m B=.0102T Multiply B times an increase of 120 Answer=1.2T
March 22, 2012

Chemistry
Hi, Please provide assistance on the following problem. I worked out part of it, but do not know what to do after calculating pH for HCl. Suppose you dissolved 0.0365 grams of HCl in water to give a final volume of 10.0 mL. The molar mass of HCl is 36.5 g/mole and the molar ...
March 19, 2012

Algebra
Help please (x^3 + 3x^2 - 2x+7)/(x+1)=11 I don't how how to solve this at all-the answer should be 11 but I don't have a clue how to get it-please show me this one so I can hopefully do my homeowrk-we did this in class today but I don't understand it
March 7, 2012

Math
A restaurant owner has a luncheon special that consists of a cup of soup, half of a sandwich, and a beverage. She wants to advertise that a different luncheon of three items can be purchased 365 days of the year for $4.99 apiece. If she has 7 different kinds of soup and 6 ...
February 26, 2012

Chemistry
The reaction 2NO2--->2NO+O2 has the rate constant k= 0.68 m-1s-1. If the initial concentration of NO2 is 9.30×10−2 M, how long it would take for the concentration to decrease to 2.00×10−2 M ? please answer and show the steps
February 9, 2012

Physics
Are you serious? If I knew how to get started I wouldn't be here. There are actually 2 more parts to the question that I didn't even post, because I just needed help with the first part. And for the record my name is Jeremy.
February 7, 2012

Physics
An enemy ship is on the western side of a mountain island. The enemy ship can maneuver to within 2520 m of the 1850 m high mountain peak and can shoot projectiles with an initial speed of 260 m/s. If the eastern shoreline is horizontally 305 m from the peak, what is the ...
February 7, 2012

CHEMISTRY
At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is essentially an ...
February 7, 2012

math
what are you asking? if you are asking 45 and 1/5 times 3/4, then the answer is 33.9
February 6, 2012

Chemistry
Thank you!!!!
February 6, 2012

Chemistry
At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is essentially an aqueous...
February 6, 2012

Chemistry
A dilute aqueous solution of an organic compound soluble in water is formed by dissolving 2.35 g of the compound in water to form 0.250 L solution. The resulting solution has an osmotic pressure of 0.605 atm at 25 Celsius. Assuming that the organic compound is a nonelectrolyte...
February 6, 2012

Physics
You are driving south on a highway at 24.0 m/s (approximately 54 mi/h) in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 26.6° to the horizontal. Calculate the speed ...
February 5, 2012

Chemistry
How many grams of sulfur (S8) must be dissolved in 100.0 naphthalene (C10H8) to make a 0.13 solution? answer in grams.
February 3, 2012

Chemistry
Which is more soluble in water: HCl or ethyl chloride?
January 30, 2012

Chemistry
Which is more soluble in water: propionic acid or sodium propionate?
January 30, 2012

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