Posts by Chris

Total # Posts: 2,765

Chemistry
We apply the same amount of energy to 10.0-g samples of aluminum, and silver which begin at the same temperature.Rank the metals from highest to lowest temperature after the heat is applied.

math
is that just the units?

math
what is rev?

math
The CD player in your computer rotates a disc at 7200rmp. Determine its velocity in: a)degrees per second b)radians per minute

math
1.A child chooses a horse to ride on a carousel. The horse is located 9m from the centre of the carousel. If the ride turns through an angle of 128pie/27 determine the length of the arc travelled by the horse.

Grammar
Thank you so much!!

Grammar
Hello! I am doing a presentation on the green sea turtle. I unsure what part of "green sea turtle" should be capitalized if at all. I am seeing it multiple ways online. Any advice would be greatly appreciated. Thanks!

math
Find a six-digit even number containing no zeros and no repeating digits in which the first digit is four more than the second digit, the third digit is one less than the sixth digit, and the fourth and fifth digits when read as a single number equal the product of the first ...

Algebra
12(2nd power)/24(2nd power)/6(2ndpower)= Simplify I got 144/576/36 is this right?

psychology Help
How did Erik Erikson progress through the hierarchy of needs difined in Maslows theory. So for physiological needs-These include the most basic needs that are vital to survival, such as the need for water, air, food, and sleep. How/what would be an example of Eriks process in ...

psychology HeLp
How did Erik Erikson progress through the hierarchy of needs difined in Maslows theory. So for physiological needs-These include the most basic needs that are vital to survival, such as the need for water, air, food, and sleep. How/what would be an example of Eriks process in ...

psychology
What motivated Erik Erikson to achieve in life? Would his own personal experiences in life be considered a motivation? Example: Changing his last name to make his own identity, his 8 phychosocial stages...

Psychology
Is Maslow's hierarchy universal? Do you see it applicable in other cultures? After reading/researching Maslow's theory of motivation we all share a compelling need to "move up", to improve ourselves, and than we become self-actualized. So to me this would not...

Physics
A massless string is wrapped around a cylinder of mass 0.400 kg and radius 0.100 m. The string is attached to the ceiling. The cylinder is released. As it falls, the string unwinds. What is the magnitude of the acceleration of the cylinder as it falls in m/s2? A.3.27 B.6.54 C....

Physics
A pendulum is composed of a mass m suspended from the ceiling by a massless string of length L. If the mass is pulled back so that it is raised an amount L/4 and then released, what is the tension on the string at the bottom of the swing? A.3 mg B.4 mg C.2 mg D.5/2 mg E.3/2 mg...

geometry
how to write an equation in slope intercept form of the line through point P(8,20 with slope 4?

math
for the equation y = 1x - 25, will the value of y increase or decrease as x increases?

algebra
2x+8y-8z-22 x+2y-2z=3 5x+7y+z=-13 solve by gaussian elimination

algebra
a can of soda at 80 F is placed in a refrigerator that maintains a constant temperature of 37 F the temperature T of the soda t minutes after it is placed in the refrigerator is given by T(t)=37+43e^-0.058t find temp to the nearest degree of the soda after 7 minutes when to ...

Math
can you guys help me with this one problem? Thanks a bunch! Problem: Draw a circle whose center is at (1,2) so that the point (1,5) is a point on the circle. What is the circumference of the circle. I don't get this so please help!!!

ALGEBRA
x(x+2)=528 x^2+2x=528. At this point complete the square (x+1)^2=529 x+1=+/-square root 529 x=-1+/-23 The two solutions are 22,-24. Remember that is wants even integers. 22(24)=528

Transportation and Security
what are potential vulnerabilities of airplanes?

transportation and cargo
would these agencies have the biggest impact on global transportation security post 9/11. • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border Protection (CBP) • U.S. ...

transportation and cargo security
Thank you.

transportation and cargo security
what agencies had the biggest impact on global transportation security post 9/11. would this be like... • TSA • Federal Emergency Management Agency (FEMA) • United States Citizenship and Immigration Services (USCIS) • U.S. Customs and Border Protection (CBP...

Microeconomics

chemistry
so d then

chemistry
A reaction will be nonspontaneous under all conditions when a. delta G is negative b. delta H is negative and DS is positive c. delta H is positive and DS is negative d. delta H is positive independent of the value and sign of DS e. delta S is positive independent of the value...

chemistry
not getting right answer how do you set it up?

chemistry
Calculate the value of ()Go for the following reaction , given the standard free energies of formation listed below each ion. Ag(SO3)_2^3- -> Ag+ + 2SO32- delta Gf, kJ/mol = -943 +77 -497 a. - 1860 kJ b. – 128 kJ c. + 26 kJ d. - 369 kJ e. + 523 kJ help no idea

chemistry
delta G for a reaction can be calculated from 1. delta Gf data 2. delta Hf and delta S data 3. equilibrium constants a. only 1 or 2 or 3 b. 1 & 2 only c. 1 & 3 only d. 2 & 3 only e. 1, 2 & 3 help

chemistry
delta G for a reaction can be calculated from 1. delta Gf data 2. delta Hf and delta S data 3. equilibrium constants a. only 1 or 2 or 3 b. 1 & 2 only c. 1 & 3 only d. 2 & 3 only e. 1, 2 & 3 help

chemistry
Free energies of formation are a. always positive b. always negative c. never zero d. measured at 298K e. more than one response above is correct help thinkin a though

chemistry
Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is 2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227C Using delta H = 81.2 kJ and delta S = 128 J/K, calculate the value of the equilibrium constant for this reaction. a 1.60 X 10-2 b. 2.1 X 10-7 c. 62.8 d. 4.9 X ...

chemistry
still not getting ans

chemistry
the new delta s= .128 81.2-(227x.128)=52.144 52.144=-rtlnk what is rt?

chemistry
Nitrosyl chloride (NOCl) decomposes at high temperature. The equation is 2 NOCl (g) -> 2 NO (g) + Cl2 (g) at 227C Using delta H = 81.2 kJ and delta S = 128 J/K, calculate the value of the equilibrium constant for this reaction. a 1.60 X 10-2 b. 2.1 X 10-7 c. 62.8 d. 4.9 X ...

chemistry
For a particular reaction delta G is more negative than delta H. This means that a. delta S is zero. b. deltaS is negative c. delta S is positive d. delta S is negative if delta H is positive. e. delta S is negative if delta H is negative. i thought it was c?

chemistry
how do i set this up?

chemistry
The standard molar entropy value of N2 (g) is 191.5 J/K-mol, of O2 (g) is 205.0 J/K-mol and of NO2 (g) is 240.0 J/K-mol. From these values we can calculate the Delta S for the reaction N2 (g) + 2 O2 (g) produces 2 NO2 (g) to be a. – 156.5 J/K b. 636.5 J/K c. 15.5 J/K d...

chemistry
so d?

chemistry
q1=c q2 what am i looking for?

chemistry
q1)Which entries below should have the highest standard molar entropy? a. SiCl4 (s) b. CCl4(l) c. CCl4 (g) d. SiCl4 (l) q2) For the above, which should have the next highest standard molar entropy?

math
Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive square. (b) Use a formula ...

math
Amit investment \$750 at 8.2% per year and \$1,300 at 4.9% per year.Both investments earn simple intrest.Whoch investment earns more simple intrest in a year? Show your work.

Transportation and Cargo Security
This is what I have so far... We have a strong and efficient transportation system which provides businesses with access to materials and markets, and provides people with access to goods, services, recreation, jobs, and other people. The U.S. transportation system includes ...

Transportation and Cargo Security
THIS IS THE FULL QUESTION I AM ASKED TO DO. Identify an asset such as an airport or a shipping company within the global transportation system. Develop and describe a security system that you feel would be most appropriate to protect the assets of the organization selected by ...

Transportation and Cargo Secuirty
THIS IS THE FULL QUESTION I AM ASKED TO DO. Identify an asset such as an airport or a shipping company within the global transportation system. Develop and describe a security system that you feel would be most appropriate to protect the assets of the organization selected by ...

Transportation and Cargo Secuirty
So I could put Austin Straubel International Airport at Green Bay

Transportation and Cargo Secuirty
Identify an asset such as an airport or a shipping company within the global transportation system. What does this mean? What is an asset of an airport or shipping company?

transportation and cargo security
I think I am thinking too much into this assignment. I was thinking that's what to write but than I second guess myself. Thank you for your help!

transportation and cargo security
Im chose to write about Air travel and I don't understand what it is ment by the public utilization of the system.

transportation and cargo security
Research the various U.S. transportation systems and identify the appropriate one to use for your case study. Research the selected system carefully and prepare a brief summary. The summary should include the following: An introduction to the system. Public utilization of the ...

division of decimals
.160416 divided by 4

Statistics
Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores:

Honors Chemistry
1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+] concentration of 1 X 10^ -12...

Math
A warranty identification number for a certain product consists of a letter of the alphabet followed by a seven-digit number. How many possible identification numbers are there if the first digit of the seven-digit number must be nonzero?

government
B: Tort law definition: "A civil wrong, other than a breach of contract, which the law will redress by an award of damages."

math
there are 5 balls in a bag.3 are white and 2 are blue. what part is white?

chemistry
A compound weighing 115 g contains 68.3 g of carbon, 13.2 g of hydrogen, 15.9 g of nitrogen, and some amount of oxygen. What is the mass percent of oxygen in the compound?

statistics
Assume that a sample is used to estimate a population proportion p. Find the margin of error. 95% confidence; n = 250, x = 130

statitics
Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective

statitics
Suppose that a sample of n = 1,600 tires of the same type are obtained at random from an ongoing production process in which 8% of all such tires produced are defective. What is the probability that in such a sample 150 or fewer tires will be defective

statistics
Suppose that SAT scores among U.S. college students are normally distributed with a mean of 450 and a standard deviation of 150. What is the probability that a randomly selected individual from this population has an SAT score at or below 600?

statistics
Jack’s ACT score is 30. Jason’s SAT score is 950. Who did better? The mean SAT score is 1000 with a standard deviation of 100 SAT points. The mean ACT score is 22 with a standard deviation of 3 ACT points

Calculus
Find the volume of the solid formed when the area bounded by x^2-y^2=9, y=x+5, and the x axis is rotated about x=1.

Math
Boys have to be either 3, 6, 9, or 12 because you have to be able to take 2/3 of them and get a whole number. The number of girls for each of these cases is 10, 7, 4, 1. You have to be able to take 1/4 of this number and also get a whole number, 4 is the only one that works so...

Math 8
6 1/2 joules. particles looses 0.08 joule of energy every 15 seconds what will energy after 4 minutes. Would this be 6 1/2 - 1.28 divide by 4

Math 8
how do you dilate a figure under 1

Math
6 divided by 1.00 will tell you how much each one is.

chemistry
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

chemistry
A 3.00- flask is filled with gaseous ammonia, . The gas pressure measured at 28.0 is 2.35 . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

math
alex is x years old his sister is 3 years older , togerther their age is 57. what is the equation for this.

math
alex is x years old his sister is 3 years older , togerther their age is 57. what is the equation for this.

Physics
This is all that was given

Physics
Calculate AMA given μk = 0.019 and an angle of 11 degrees.

bio
i got D

biology
its a

Economics
I was guessing between A or D. Thank you, David. Greatly appreciate it.

Economics
The spirit of equating marginal cost with marginal revenue is not held by a.perfectly competitive firms. b.oligopolistic firms. c.perfectly competitive firms and oligopolistic firms. d.none of the statements associated with this question are correct.

Economics
Two identical firms compete as a Cournot duopoly. The demand they face is P = 100 - 2Q. The cost function for each firm is C(Q) = 4Q. The equilibrium output of each firm is: A. 8 B. 16 C. 32 D. 36

Mangerial Economics
Consider a Cournot duopoly with the following inverse demand function: P = 50 - 0.2Q1 - 0.2Q2. The firms' marginal cost are identical and given by MCi(Qi) = 2. Based on this information firm 1 and 2's reaction functions are A) r1(Q2) = 4.8 - 0.5Q1 and r2(Q1) = 4.8 - 0....

math
Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for \$350 million. Since the primary asset of this business is real estate, Templeton’s management has determined that they will be able to borrow the majority of the money ...

Maths
Square root of 12 using prime factor form? Square root of 320 using prime factor form? Square root of 36 using prime factor form?

english
briefly summarizing the theory and discussing at least two of the “Seven Intelligences” that apply most closely to you, providing examples to illustrate your point.

physics
A 0.23 kg ball of dough is thrown straight up into the air with an initial velocity of 12 m/s.Find the momentum of the ball of dough halfway to its maximum height on the way up.

Chemistry
Original deltaG=288.9 deltaG(system)=deltaG[CO2]+deltaG[M]-deltaG[MO2]-deltaG[C] look up deltaG value from table for CO2=-394.4 DeltaG for a solid is almost always zero (C) So -394.4+288.9=deltaGsystem then K=e^((deltaGsystem)/((8.314/1000)*298)))

HS Chem
Using terms of equilibrium, what is the difference between spilling a glass of milk versus ozone eminating from your copy machine?

A car cost \$65 per day to rent plus \$.35 per mile. Joe rents car for 1 day and drives 115 miles. what is the equation and the solution. The solution is pretty simple \$65 + .35x115 = 105.25 I can't figure out the equation.

chemistry
Using standard heat of formations. (Appendix II in text). Calculate the standard enthalpy change for the combustion of methane. CH4 (g) + 2 O2 ---¨ 2CO2(g) + 2H2O (l) ƒ¢H0 = ?

Chemistry
Calculate the [H+], [OH ‾ ], and the pH of 0.16 M solutions of: hydroxylamine (HONH2, Kb = 1.1 10-8)

Chemistry
Calculate the pH of a 5.90x10-3 M solution of H2SO4.

Chem Acids/Bases
A 25.00 mL sample of H3PO4(aq) requires 31.05 mL of 0.2410 M KOH for titration to the second equivalence point. What is the molarity of the H3PO4(aq)?

Chemistry
Write the dissociation reaction and the corresponding Ka equilibrium expression for each of the following acids in water. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer. Omit water in your answer.) (a) HC_2H_3O_2 (b) Co(H2O...

principles of physics
A carnival has a Ferris wheel where the seats are located halfway between the center and outside rim. If you were at the outside rim, your angular speed while riding on this Ferris wheel would be A) more and your tangential speed less.B) less and your tangential speed more.C...

principles of physics
If the Earth had two identical moons in one circular orbit, and the moons were as far apart in that orbit as they could be, the center of gravity of the Earth-moons system would beA) at the center of the Earth.B) outside the Earth, but beyond the orbital path of the moons.C) ...