# Posts by james

Total # Posts: 2,494

**math**

5x=-15

**scientist**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...

**Chemistry**

(3.9)*(0.9025J)*(Tfinal-99.3)+(10)*(4.184J)*(Tfinal-22.6)=0 (3.51975J)*(Tfinal-99.3)+(41.84J)*(Tfinal-22.6)=0 45.35975JTfinal-1295.095175=0 1295.095175/45.35975=28.6 degrees celsius

**math**

Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun. Not the same person

**Physics (Oscillation)**

If a particle moves in simple harmonic motion with a frequency of 3.00 Hz and an amplitude of 5.00 cm through what total distance does the particle move during one cycle of its motion, what is its maximum speed, where does this maximum speed occur and what and where does the ...

**com155**

So how did you do on this? I have the same assignemnt but I have come up with different answers than yours. How did you do?

**Chemistry**

Thanks I just figured it out too. I appreciate your help.

**Chemistry**

A solution is prepared by dissolving 5.00g of an unknown molecular solid in water to make 500 ml of solution. The osmotic pressure of the solution is 1.61 atm at 25 degrees C. What is the molar mass of the solute? This is what ive done so far: M= 1.61atm/(0.0821Lxatm/molxK)(...

**algebra**

solve algebraically x^2 + y^2 = 16 x - y = 4

**algebriacally.**

x^2 - y^2 = 9 y = 4

**equation**

Solve algebraically and check y = x^2 - 3 x + y = -1

**IT/Business/Law?**

Do I have to register for copyright protection of works of art including writing, photographs and digital images?

**science**

an object will accelerate in free fall because the only force accting on it is gravity True or false

**Math**

Can someone please tell me what the vertex and line of symentry would be for r(x)=-3(x+3)^2.. Thank you

**College Chemistry**

Help please.

**College Chemistry**

Complete the following table for aqueous solutions of caffeine, C8H10O2N4. Find: Molality Mass Percent Solvent Ppm Solute Given: Mole Fraction Solvent = 0.900 Molar Mass is 194.2g i believe.

**basic college reading**

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. ...

**basic college reading**

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 ...

**business**

idk?

**business**

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**

please show examples og week nine final for human services admin.

**human services admin**

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 ...

**4 grade math**

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.