Thursday
December 8, 2016

# Posts by nick

Total # Posts: 1,288

chemistry
What is the molarity of KOH in a solution that has pH of 10.0?
April 21, 2011

chemistry
What is the pH of 6.6 X 10^4 M HCL?
April 21, 2011

math
Simply the expression 3(2+3) squared/ 7-2 - 10 squared/5
April 19, 2011

math
Which type of graph would be most appropriate to show the students in the debate club, the computer club and the ecology club and the students who are in more than one of these clubs? A bar graph, line graph, Bennett diagram, or a circle graph? Is it a circle graph?
April 18, 2011

finance
Kohers Inc is considering a leasing arrangement to finance some manufacturing tools that it needs for the next 3 years. The tools will be obsolete and worthless after 3 years. The firm will depreciate the cost of the tools on a straight-line basis over their 3 year life. It ...
April 13, 2011

math
A 2-pint bottle of soy sauce costs \$1.79. If the unit price remains the same, how much wi 2 gallons of soy sauce cost?
April 12, 2011

Finance
Kohers Inc is considering a leasing arrangement to finance some manufacturing tools that it needs for the next 3 years. The tools will be obsolete and worthless after 3 years. The firm will depreciate the cost of the tools on a straight-line basis over their 3 year life. It ...
April 12, 2011

Finance
Sutton Corporation, which has a zero tax rate due to tax loss carry-forwards, is considering a 5 year, \$6,000,000 bank loan to finance service equipment. The loan has an interest rate of 10% and would be amortized over 5 years, with 5 end-of-year payments. Sutton can also ...
April 12, 2011

Finance
Union America Corporation (UAC) is planning to bid on a project to supply 150,000 cartons of machine screws per year for 5 years to the US NAvy. In order to produce the machine screws UAC would have to buy some new equipment. The new equipment would cost \$780,000 to purchase ...
April 12, 2011

Finance
Thomson Media is considering some new equipment whose data are shown below. The equipment has a 3 year tax life and would be fully depreciated by the straight line method over 3 years but it would have a positve pre-tax salvage value at the end of year 3, when the project ...
April 12, 2011

Finance
Thomson Media is considering some new equipment whose data are shown below. The equipment has a 3 year tax life and would be fully depreciated by the straight line method over 3 years but it would have a positve pre-tax salvage value at the end of year 3, when the project ...
April 12, 2011

sciences
If a baseball is thrown 30 m/s backwards from a truck moving 50 m/s, how fast will the ball strike the glove of a ground-based catcher?
April 10, 2011

spanish
Rewrite each statement two ways using object pronouns. Tengo que leer los libros en una semana.
April 6, 2011

Math
(4.3 x 10^3)(2 x 10^-8)
April 4, 2011

calculus
In a certain region, the number of bushels of corn per acre, B, is given by the function B(n)=-0.1n^2 + 10n, where n represents the number of seeds, in thousands, planted per acre. If corn sells for \$3/bushel and cost \$2 for 1000 seeds, find the optimal number of seeds to be ...
April 4, 2011

statistics
a simple random sample of size n=5 is obtained from the population of drivers living in New York City, and the breaking reaction time of each driver is measured. The results are to be used for constructing a 95% confidence interval. What is the number of degrees of freedom ...
March 30, 2011

physics
A 27-kg boy stands 4 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 238 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground. (a) Calculate the angular velocity of the merry-go-round. (b...
March 26, 2011

Physics
Find the net force of gravity on the moon (Mm = 7.35 x 10^22 kg) from the earth and the sun (Ms = 1.99 x 10^30). Assume that the two forces are perpendicular to each other. Give the angle in relationship to the sun.
March 24, 2011

Science
a scooter goes from a velocity of 6.9 m/s to a velocity of 4.8 m/s in a time of 5.1 seconds. what is the acceleration of the scooter
March 15, 2011

Chemistry
How many moles of chloroform, CHCl^3, are required to fill a 253-ml flask at 100.0 degrees Celsuis and 940 torr?
March 14, 2011

Chemistry
A sample of air has a volume of 140.0 mL at 67 degrees Celsius. At what temperature would its volume be 50.0 mL at constant pressure?
March 6, 2011

calculus
That's what I have done, I have expanded it to get the derivative, but I am having problems solving for t.
March 5, 2011

calculus
If the fish population, p, in a lake can be modelled by the function p(t)=15(t^2+30)(t+8), where t is the time, in years , from now. How do I determine the rate of change when the population when there are 5000 fish in the lake?
March 5, 2011

college physics
If a rope with linear mass density .167kg/m and is 4m long, what are the lowest four frequencies of standing waves possible on such a rope? What is the fundamental frequency?
March 3, 2011

Physics
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 20°. For a speed of 29 m/s, at what value of the distance d should a driver locate his car if he ...
March 2, 2011

Physics
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 20°. For a speed of 29 m/s, at what value of the distance d should a driver locate his car if he ...
March 2, 2011

Physics
A satellite has a mass of 6000 kg and is in a circular orbit 4.20 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.20 106 m. What is the true weight of the satellite when it is at rest on the planet's surface?
March 2, 2011

Physics
A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 2.60 104 s. What is the speed at which the satellite travels?
March 2, 2011

chemestry
an aqueous solution was prepared by dissolving 1438.0g of a nonelectrolyte in 469.0g of water at 25*c. the Vapor pressure of the resulting solution was found to be 20.5 torr. what is the molar mass of the unknown compound? the vapor pressure of the water at 25*c is 23.76torr.
March 2, 2011

Chemistry (Stoichiometry)
Magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. a) Write a balanced chemical equation for this reaction. b) What is the percentage yield if 10.1g Mg reacts with an excess of water and 21.0g Mg(OH)2 is recovered? c) If 24g Mg is used and the ...
March 2, 2011

algebra
a 9 foot board is cut in two pieces . one is 3.5 feet longer than the other . how long is the longer piece
March 1, 2011

physics
Wnc=change in energy=ef-eo =.5mvf^2 - mgh Should get -32540.68 J
February 28, 2011

math
Create your own word problem that uses a system of equations to solve. Your problem must include the following words: beach,hammock,dance,and troll.
February 24, 2011

math
s=5k+5z
February 16, 2011

math
A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace
February 13, 2011

math
Andrew factored the expression 54x^3-30x^2+15x as 5x(9x^2-6x+3) but when Melissa applied the distributive law and multiplied out 5x(9x^2-6x+3). she got 45x^3-30x^2+15x. thus andrew's solution does not appear to check. why is this? eplain your reasoning and correctly factor...
February 11, 2011

Physics
A guitar string, destined to be an upper E string, has length 100 cm and mass 0.400 g. a. What is its mass per unit length? u = m/L = 0.004 g/cm b. What length of this string should be used on a guitar if the fundamental frequency is to be 330 Hz and its tension is to be 100 N...
February 10, 2011

math
The are of a rectangular athletic field is represented by the expression 12y^3+48y^2+24y square meters.write an algebriac expression to represent one possible set of dimensions (in the same sense''length times width'')of the althetic field. include the correct ...
February 10, 2011

Physics
A fountain contains a 3 m tall cylinder with holes placed at a height of 1 m and 2m. The water level is kept constant at a height of 3 m by an input pipe. As water shoots out from the tube, it strikes the fountain pool at some distance x away from the cylinder. Find x for each...
February 9, 2011

Chemistry
Given the following equation: 2KClO3---> 2KCl+3O2 How many moles of O2 can be produced by letting 12.00 moles of KClO3 react?
February 8, 2011

Chemistry
for each of the following balanced chemical equations write all possible mole ratios. Mg+ 2HF---> MgF^2+ H^2
February 7, 2011

Chemistry 2
Styrene, C8H8, is one of the substances used in the production of synthetic rubber. When styrene burns in oxygen to form carbon dioxide and liquid water under standard-state conditions at 25°C, 42.62 kJ are released per gram of styrene. Find the standard enthalpy of ...
February 6, 2011

algebra
(y^4+3y-5)/(y^2+7) find the quotient
February 6, 2011

physics
CALCULATE THE ACCELERATION FOR A 10.0 KG BLOCK WHICH IS BEING PULLED UP A 35.0 DEGREE SLOPE BY A FORCE OF 140 N IF THE COEFFICIENT OF SLIDING FRICTION IS 0.100
February 6, 2011

physics
CALCULATE THE ACCELERATION FOR A 10.0 KG BLOCK WHICH IS BEING PULLED UP A 35.0 DEGREE SLOPE BY A FORCE OF 140 N IF THE COEFFICIENT OF SLIDING FRICTION IS 0.100
February 6, 2011

math
how do I solve (4x^2-9y^2)/2x+3y)
February 3, 2011

math
how do I solve (4x^2-9y^2)/2x+3y)
February 3, 2011

Chemistry
What are the products for the combustion of a a hydrocarbon.
February 1, 2011

Science
when a cell has a specific function, it is called what?
February 1, 2011

math
(1/3 +5/6)divided by 2/5=? in simplest form
January 31, 2011

21/8 divided by 5/6=? in simplest form
January 31, 2011

Calculus
A ladder 41 feet long that was leaning against a vertical wall begins to slip. Its top slides down the wall while its bottom moves along the level ground at a constant speed of 4 feet per second. How fast is the top of the ladder moving when its 9 ft above the ground?
January 30, 2011

Physics
Two balls, each with mass 0.5g and carrying charge Q, are hung on strings 35cm and suspended from one point. The balls repel and form a 40 degree angle between them. What is the charge? CAN YOU WALK ME THROUGH THIS QUESTION?
January 30, 2011

math
find the difference (6x^2-3x-9)-(2x^2+8x+3)
January 27, 2011

physics
A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32 km2. What mass of ...
January 26, 2011

Chemistry
I'm really not getting how to solve these chemical equations. If someone could explain to me their method of solving. I know you have to list the number of reactants and products for each side but I get confused what you add and what determines what you add. Stuff like ...
January 25, 2011

Chemistry
if each "hydrogen" atom has a mass of 1g and each "carbon" atom has a mass of 12g what is the ratio of the mass of 1 mole of carbon to one mole of hydrogen
January 25, 2011

Physics
After driving 20.0 km west, a car turns southwest and proceeds another 80.0 km. What is the displacement (in kilometers) of the car from the point of origin (magnitude only)?
January 24, 2011

grammar
Trumpets and trombones are part of our band. In some ways this feels like part is a direct object, but it also seems like this could be an intransitive sentence.
January 22, 2011

grammar
transitive :)
January 22, 2011

grammar
Miss, give me that cake. In this sentence, is the subject "you" since it is imperative, or is the subject Miss. If you think of the sentence like this: (You) give me the cake, miss, it seems like it would be intransitive with an active verb. Is that right?
January 22, 2011

Grammar
Can What be a subject? Or is song the subject?
January 22, 2011

Grammar
Is it also intransitive?
January 22, 2011

Grammar
I'm working with linking, transitive and intransitive verbs. For this sentence, do I need to write it as a statement? I think it is a linking verb. Intransitive? "What is the most popular song in the country this week?"
January 22, 2011

math
A plane travels at a rate of 425 miles per hour. Write an expression to show the distance it travels, if t reprents hours.
January 19, 2011

math
jonna and elizabeth found a level campsite and pitched thier tent as shown below.if m <2 explain your reasoning
January 18, 2011

math
a man hods a rifle in a horizontal postion 4 feet above the ground and shoots the bullet with an initial velocity of 2000 fps horizontally. it may be assumed that the ground is level, what will be the horizontal distance from the man to the point at which the bullet strikes ...
January 10, 2011

Pre algebra(3)
\$29/kg is how many cents/g
January 9, 2011

algebra (inequalities)
a. 120p> 175 b. p> 1.46
January 9, 2011

Geometry
If AB = 3x +8 and GJ = 2x +24 what is AB? AB and GJ are ||
January 6, 2011

math
125x.1 explain the decimal movement when multiplying by .1
January 6, 2011

500 divided by 100 explain the decimal movement when dividing by 100.
January 6, 2011

125x.1 explain the decimal movement when mutiplying by.1
January 6, 2011

50 divided by 10 EXPLAIN THE DECEMAL MOVEMENT WHEN DIVIDING BY 10.
January 6, 2011

geometry
In isosceles triangle ABC, AB = BC, and D is a point between A and C on AC. Can you conclude MO > ML, MN > MO, angle L > angle BDA, or angle N > angle BDC
January 5, 2011

math
January 3, 2011

science
how does the distribution of animal tissues in an organism difer from the distribution of tissues in a plant
December 20, 2010

math
December 16, 2010

english
I need help really quick unscrambling this word!!! AAAATTTLIIRRONNME Its two words and its the name of a mall. the first words starts with I and the second starts with M.
December 15, 2010

math
substitution
December 12, 2010

math
Solve the following linear system of equations. 3x-2y+z=2 x-y+z=2 5x+10y-5Z=10
December 12, 2010

Math
Let f(x)=-(x-1)^2+4 Solve f(x)=0 to find the x-intercepts
December 12, 2010

Math
A lottery prize worth \$1,000,000 is awarded in payments of \$10,000 five times a year for 20 years. Suppose the money is worth 20% compounded five times per year. What is the formula used to find the present value of the prize?
December 12, 2010

Math
How much would have to be invested at the end of each year at 6% interest compounded annually to pay off a debt of \$80,000 in 10 years?
December 12, 2010

Legal aspects healthcare
You are so right. It has to be true.
December 11, 2010

Legal aspects healthcare
Healthcare professionals who have a “need to know” access to medical records have a legal and an ethical obligation to protect the confidentiality of the patient information. I think it is not true, right?
December 11, 2010

chemistry
Predict the product: hydrogen peroxide (catalyzed by manganese dioxide)
December 5, 2010

algebra
43-n= 27
November 30, 2010

English
I need to find 2 medaphors in the book Among the Enemy by Margaret Peterson Haddix. I can't find them after I've read it twice.
November 28, 2010

Science
Thank you. That helped a lot.
November 22, 2010

Science
I have to write a project proposal about the global climate crisis so I can do a report and powerpoint. I need suggestions on what to write about by answering the following questions.... How do I affect the water and carbon cycle and what can I do to lesson my negative impact ...
November 22, 2010

Physics
A centrifuge rotor rotating at 10700 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 2.48 m * N. 1. If the mass of the rotor is 5.61 kg and it can be approximated as a solid cylinder of radius 0.0820 m, through how many revolutions will ...
November 22, 2010

Physics
A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make?
November 22, 2010

Physics
The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?
November 22, 2010

Physics
A laser beam is directed at the Moon, 380,000 km from Earth. The beam diverges at an angle of 4.6×10−5 rad. 1. What diameter spot will it make on the Moon?
November 22, 2010

college physics
An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?
November 19, 2010

college physics
An ideal gas (volume 1.1m3, pressure 103600 Pa, temperature 400 K) undergoes an isothermal process during which it absorbs 2000 J of heat. How much did the entropy of the system increase?
November 19, 2010

chemistry
H2C=CH2(g) + H2(g) C2H6(g) Adding a small amount of platinum powder greatly increases the rate of the reaction above. How might the platinum be affecting the rate of the reaction? (Select all that apply.) 1) It increases the concentration of the reactants. 2) It increases the ...
November 18, 2010

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