# Posts by james

Total # Posts: 2,479

main idea of mythMyth 2: You have to read every word. Some experts suggest that you don’t need to read every word of a passage. This is particularly true once you break your reading task into steps with distinct purposes. For example, the first step in SQ3R is to survey. ...

find the mainMyth 1: You only need to read the material once. Textbooks are packed with too much information to understand, much less retain, in one reading session. This is particularly true if the information is new and unfamiliar. Most students who can read and retain ...

Physics 221
Hydraulic engineers in the United States often use, as a unit of volume of water, the acre-foot, defined as the volume of water that will cover 1 acre of land to depth of 1 ft.(feet) A severe thunderstorm dumped 2.0in. (inches) of rain in 30 minutes on a town of area 26 km2 (...

Algebra 2
I need help finding the vertex of the parabola y=x^2-3x-21

math
A rectangular Persian carpet has a perimeter of 240 inches. The length of the carpet is 30 inches more than the width. What are the dimensions of the carpet? Use P = 2L + 2W.

Algebra
The second angle of a triangle is 3 times as large as the first. The third angle is 55° more than the first. Find the measure of the smallest angle

calculus
Determine whether the graph of the equation is symmetric with respect to the x-axis, y-axis, line y=x, line y=-x, or none of these. x+y=6 Do I have to move the y and 6 to the other side of the equations or does it not matter? Also, if I do, when I test using the equation a^2...

medical
according to a December 4 hospital census of 100 , what are the total inpatient service days for December 5 ?

accounting
The overall (weighted average) cost of capital is composed of a weighted average of : a)The cost of common equity and the cost of debt b)The cost of common equity and the cost of preferred stock c)The cost of preferred stock and the cost of debt d)The cost of common equity, ...

physics
A spring (k=200N/m) is fixed at the top of a frictionless plane inclined at an angle of 40 degrees. A 1 kg block is projected up the plane from an initial position that is distance d=0.60m from the end of the relaxed spring, with an initial kinetic energy of 16J. A) What is ...

physics
A spring (k=200N/m) is fixed at the top of a frictionless plane inclined at an angle of 40 degrees. A 1 kg block is projected up the plane from an initial position that is distance d=0.60m from the end of the relaxed spring, with an initial kinetic energy of 16J. A) What is ...

idk?

Business relationships often present ethical dilemmas that are ________ 1. not easily resolved 2. easily resolved by following the relevant laws 3.best resolved by creating a lose-lose situation 4.irrelevant and therefore require no action

Economics
A reliable 15-year-old babysitter can be a price maker within her own neighborhood. Suppose that this babysitter wishes to implement a Multipart Pricing Plan. Customers who use her services less than L hours per month will pay a high price of PH dollars per hour. Customers who...

english
Lucia works for a lawyer who depends on her for everything. Answering phones, planning business trips, proofreading documents, and scheduling appointments. Is this sentence grammatically correct

physics
A horse pulls a cart with a force of 40lb at an angle of 30 degrees above the horizontal and moves along at a speed of 6mi/hr. A) how much work does the force do in 10 min? B) What is the average power (in horsepower) of the force?

Trigonometric Functions
This is confusing

finance
Oppenheimer Bank is offering a 30-year mortgage with an EAR of 5 3/8%. If you plan to borrow \$150,000, what will your monthly payment be?

Physics
12

allied health
I want to say D. Not sure here Which of the following is true in regard to limited data sets? A. Patients must authorize the use of limited data sets. B. Those who receive limited data sets can pass them on without restrictions. C. Limited data sets can’t include a ...

health

help with week nine final project

pre-calculus
I'm not sure. It was on my math test. I typed it out exactly like it said on the test.

pre-calculus
Prove 3+4+5+...+(n+2) = [n(n+5)]/2 for n>4 Do the first step in a proof by induction.

trig
Write the following equation in standard form and identify the type of conic: 9y^2 - 4x^2 + 8x + 18y + 41 = 0

math
In November, a toy was \$40.00. In Dec., the price increased by 80%. In Jan., the price decreased by 80%. What was the price of the toy after it was discounted in January?

MATH
Triangle XYZ below is an isosceles triangle with legs and . and are perpendicular bisectors of triangle XYZ. Find the length of segment if QR = ½ x and QS = - ½ x + 4.

calculus
I'm not sure how to find the limit of this problem :S limit as x -> 0+ (cos(x))^(1/x^2)

CHEIMISTRY
A buffer solution is 0.20 M in HPO42- ions and 0.l0 M in H2PO4- ions. What is the H3O+ ion concentration of the solution? The ionization constants for H3PO4 are as follows: Ka1 = 7.5 ´ 10 -3, Ka2 = 6.2 ´ 10-8, Ka3 = 1 ´ 10-12. a. 3.7 ´ 10-3 M b. 3.7 &...

chemistry
What is Ka for 4-aminobenzoic acid if a 0.020 M solution of the acid has a pH of 3.31? a. 2.5 ´ 10-2 b. 2.0 ´ 10-2 c. 4.9 ´ 10-4 d. 1.2 ´ 10-5 e. 2.8 ´ 10-6

college
arranged in a triangle with each building about 500 meters apart. Previously, these buildings were wired with CAT3 UTP running 10BaseT Ethernet. The IT director had mandated that your company will need to use 1000 Mbps Ethernet to the desktop. Define a comprehensive network ...

Physics
A 1.3 X 10^3 kg car traveling with a speed of 2.5 m/s executes a turn with a 7.5 m radius of curvature. Calculate the centripetal acceleration of the car and the centripetal force acting on the car.

Physics
Describe the primary force or forces involved when a car executes a turn. Explain why passengers tend to lean or slide toward the outside of the turn.

Physics
Centripetal force can be calculated from centripetal acceleration by?

Physics
A centripetal force acts

Physics
What term describes a force that causes an object to move in a circular path?

Physics
What is the centripetal acceleration of a skater moving with a tangential speed of 2.0 m/s in a circular path with radius 2.0 m?

Physics
What is the speed of an object in circular motion called?

trigonometry
in triangle abc, angle c is a right angle, AC=8,Bc=15 and AB=17 a.find Sine a b.Find cosine A c.Find Sine B d. Find COsine B E. the measure of angel A f. the measure of angela b Can u tell me the answers and how to do it. Because im in 8th grade

trigonometry
in triangle abc, m<c=90, bc=20, and ba=40. a.find sine a b.find measure of <a

triginometry
thanks

triginometry
In Triangle RST, m<S=90, RS=5, and ST=12. Find Cosine T

Physics
suppose the hammer has a mass of 7.26kg, the wire is 1.00m long, and the force keeping the hammer moving in a circle is 7.43 x 10^3N. what will the hammer's speed be when the thrower releases the wire?

Physics
what is magnitude of the centripetal if the tangential speed of the car is 2.0m/s and the radius of the wheel is 83m

Chemistry
1. c 2. a

math
how to slove (2y+5)(y-3)

chemistry
How many atoms of Ag are in each of the following quantities? 1- 0.38 mole Ag2S? 2- 0.78 mole AgCl?

Chemistry
What is the name of the product when cinnamaldehyde and cyclopentanone undergo aldo condensation?

College Chemistry
Sulfur trioxide is made from the reaction of sulfur dioxide and oxygen. how many grams of SO3 can be made from the reaction of 1.91g SO2 with 1.29g O2? 2 SO2(g) + O2(g)---> 2SO3(g) a) 2.39g b) 3.20g c) 3.23g d) 4.77g e) 6.46g How would i solve this problem?? Im thinking i ...

social studies
what tools did egyptians use to bulid pyramids

Chemistry
What precautions must be taken when you introduce the mixture of compounds to be separated onto the absorbent column

College Chemistry
Thanks, i had my doubts! I was also wondering how i can determine which ionic solid will have the least melting point. Do i look at the intermolecular forces, or do i need to look else where for my answer???

College Chemistry
Does Vapor Pressure decrease as intermolecular forces increase???

Math
You roll a number cube three times. Find P(all odd).

College Chemistry
I see. Well thanks DrBob222. Im starting to understand it a little more.

College Chemistry
BF3 can best be described through the lewis structure as? 1. It has less than an octet on at least one atom. or 2. It has less than an octet of electrons on all toms. I know that it is missing electrons in order to satisfy the octet. And Boron nor fluorine can make double ...

Chemistry
Hi Can someone please help me undersand how to get the answer to this question A 15.0 mL solution of 0.050 mol/L AgNO3 was titrated with 0.0250 mol/L NaBr in the cell SCE || titrated solution | Ag(s) Find the cell voltage for 10.0 mL of titrant added. (a) -0.0312 V (b) 0.194 V...

math
y=3x^2-7

calculus
Solve the equation. 2x - 4 = -10 Find the LCM of 29 and 116. Simplify. 88 · 8-8

mat
2 - x > 17

computer programming c++
c++ program questoin A particular talent competition has 5 judges, each of whom awards a score between 0 and 10 to each performer. Fractional scores, such as 8.3, are allowed. A performer’s final score is determined by dropping the highest and lowest score received, then ...

chemistry
Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s) + O2(g) -> SO2(g) 2SO2(g) + O2(g) -> 2SO3(g) What volume of O2 (g) at 350 degrees Celsius and a pressure of 5.25 atm is needed to completely convert 5.00g ...

are you seriously in 4th grade and using this website for help? lol i'm a 3rd year college student and i just started to ask for help online

math
a series of numbers starts with 2.each number in the series is two times as great as the number before it.what is the sixth number in the series.

US History
How did the Missouri Compromise cause the North and South to have even stronger feelings of sectionalism in the United States?

College Chemistry
How do acids and bases react?

US History
What was the Gasden Purchase?

CRT 205
I AM HAVING TROUBLE WITH FINAL PROJECT ON GUN CONTROLL

organic chemistry
Lab was: PREPARATION OF A SYNTHETIC PLANT HORMONE

PHYSICS PLS HELP
Internal resistance problem. Suppose that in Figure 3.3, Vo=13V, R1=250kphm, R2=375kohm, and Ri=1.9Mohm. Initially, the voltmeter is disconnected. EXAMPLES: What is the voltage across R2? [Answer: 7.8 V.] What is the voltage across R2 with the meter connected? [Answer: 7....

Physics
With speed 75m/s and period 5.42ms, calculate the wavelength.

chemistry
what is the pressure exerted by a 0.500 mol sample of nitrogen in a 10.0 L container at 20 degrees C?

chemistry
once i have the amount of mols of sucrose present how do i convert that to sucrose? and to kj and grams? lets say i have 0.03110 mols of sucrose

chemistry
if 32kj of energy results in an average weight gain of 1 g of body mass, then how much weight could a person gain after eating 1 cookie. use dimensional analysis mass of 15.21g of a cookie.

chemistry
does not at all say. that's all that is provided. it just sais use dimensional analysis to solve this question. i have a 95% average in this class so far and i am completely puzzled. this is a bonus question on a lab.

chemistry
if 32kj of energy results in an average weight gain of 1 g of body mass, then how much weight could a person gain after eating 1 cookie. mass of 15.21g of a cookie.

Algebra
No worries, Thank you

Algebra
it's f to the power of -1, then i think it's called composite f. Like you know when you get the problems fog of gof? it's like that except fof and the first f is raise to -1 power. Thanks

Algebra
using f(x)=4x-5, find f^-1 o f

Inorganic Chemistry
In the molecular compound [Co(NH3)3(DMF)](NO3)3 what is the mode of bonding in which DMF is preferred?

Inorganic Chemistry
In the molecular compound [Co(NH3)3(DMF)](NO3)3 what is the mode in which DMF is preferred?

College Chemistry
Would i take the n into consideration?? This has to do with quantom numbers by the way.

College Chemistry
How many orbitals have the following quantum numbers: n=6, l=2, ml=-2?? a. 0, b. 5, c. 7, d. 10, e.6 Since only one can include n=6 in its equation would it make it just one orbital having those numbers? im also thinking that there might be other orbitals that have these ...

XECO 212
I would for you to point me in the direction.

How did U.S. manufacturers become vulnerable to offshore outsourcing? What are some of the operations management practices that can help bring manufacturing back to the U.S? How can a focus on quality improve manufacturing? How can lean manufacturing and near-sourcing help a ...

physics
how do i solve this, i tried dividing the mass by the height, but its wrong A 407-kg pile driver is raised 15 m above ground. (a) How much work must be done to raise the pile driver?__kj (b) How much work does gravity do on the driver as it is raised?__kj (c) The driver is now...

College Chemistry
Thank you i appreciate it.

College Chemistry
Part a: What mass of solid CuCL2 is required to prepare 450.0mL of 0.125M CuCl2 solution?? Part B: What are the concentrations of Cu +2 ions and Cl- ions in the above solutions. I understand part a, and got the right answer. i need help understanding part b.

calc-kinematics
if a particle moves along a line so that at time t where t [0,pi] its position is given by s(t)=-4cost-t^2/2+10 what is the velocity of the particle when its acceleration is zero? so i found v(t) = 4sint-t a(t)=4cost-1 = 0 solved for t plugged it into v(t) and i got the wrong ...

calc-related rates
"The volume of a cone of radius r and height h is given by V=1/2(pi)(r^2)(h)If the radius and the height both increase at a constant rate of .5 cm per second at WHAT RATE in cubic cm per second, is the volume increasing when the height is 9 cm and the radus is 6 cm" ...

Chemistry
When solving using the quadratic equation, I get two possible values. Which one do I use? Both are positive.

Chemistry
What is the pH of a 0.0054 molar solution of Oxalic Acid. K1= 6.5E-2, K2= 6.1E-5? Here's what I have so far for K1: 6.5E-2 = (x)(x)/ (x-0.0054) x= 0.0059 pH = -log(0.0059) = 2.23 K2 is pretty much the same, but I have to work it out. 6.1E-5 = (x)(x + 0.0059)/ (x-0.0059) x...

calc
how to find the integral of this function x^2 * root(x^3+1)

calc
how do i find the derivative of........ (sinx) ^2-(cosx) ^2 i put it into my t-89 and got -4sinxcosx butthats not a multiple choice. can someone tel me how to do this by hand?

chemistry
Choose all of the following statements about the equilibrium constant K that are true: (a) If the K value for a reaction is > 1 then Go must be negative for this reaction (b) A large value for K implies there is a strong driver for the reaction to proceed in the forward ...

Math
What is 563 divided by 4 show you work

grammar
preschool ivite pablo on thursdays.

Chemistry
I'm not real sure about the K1 expressions. Is this correct? C2H2O4 --> H+ + C2O4H- K1 = (x + 0.0054)(x + 0.0054)/ (0.0054-x) Solve for x then repeat for K2

Chemistry
What is the pH of a 0.0054 molal solution of C2H2O4. First ionization constant K1= 6.5 x 10-2, second K2= 6.1 x 10-5.

Chemistry
Is the answer 0.211 mg/L PbF2?

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