# Posts by katy

Total # Posts: 462

**physics help!!**

a wheel of radius R rotates making f revolutions per second. the quantity f is know as the frecuency of the motion. show tha 1/f is the time to complete one revolution, called the period T of the motion. show that the centripetal acceleration of a point at the rim of the wheel...

**physics**

a wheel of radius R rotates making f revolutions per second. the quantity f is know as the frecuency of the motion. show tha 1/f is the time to complete one revolution, called the period T of the motion. show that the centripetal acceleration of a point at the rim of the wheel...

**physics**

an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

**physics**

an astronaut rotates at the end of a test machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

**physics**

an astronaut rotates at the end of a tesr machine whose arm has a length of 10.0m. if the acceleration she experiences must not exceed 5g (g=10m/s^2? what is the maximum number of revolutions per minute of the arm?

**math**

What are the matrix used for?

**math**

What are the matrix used for?

**math**

What are the matrix used for?

**math**

What are the matrix used for?

**Chemistry**

In lab we determined the heat capacity of a calorimeter. The question is how would the heat capacity of the calorimeter be affected if the NaOH solution had been at 25 degrees Celsius and the HCl solution had been at 22 degrees Celsius when the two solutions were mixed? Would ...

**business**

an example of PEST analysis please

**business**

A PEST analysis of a company... answer please

**Chemistry**

What is the percent aluminum in a sample weighing 1.85 grams. If 35 mL of wet hydrogen gas was produced @ 24 degrees Celsius under a total pressure of 752 torr?

**physics**

A 50.0 kg gymast hangs vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 45 degrees with the ceiling, what is the tension in each rope?

**math**

When you multiply 4.7805 by 1000, you move the decimal three places over which would give you an answer of 4780.5.

**technology**

Why computers manufacturers constantly are taking out computers more faster?

**english**

a person who is professionally engaged in the analysis and interpretation of works of art. That's the definition, is that an answer?

**Geography/History**

Okay. Those are the ones I was thinking were true. And 6, but that one isn't true. But I always have to check with questions that I'm not so sure about. Thank you, Ms. Sue.

**Geography/History**

I'm pretty sure I know which ones are true. But I want to double check. Just to make sure.

**Geography/History**

Multiple select. The dissolution of the Union of Soviet Socialist Republics _____. 1) had no effect on the United States 2) affected nations throughout the world 3) reduced the number of Communist nations in the world 4) increased the number of Communist nations in the world 5...

**Geography/History**

Ahh, okay. Thank you. (:

**Geography/History**

Incidents of Basque violence are caused by their desire for _____. 1) educational opportunities 2) improved health care 3) increased wages 4) independence I think it is 4. I just want to know if I am right. help?

**IPC**

Thank you! I get it now. (:

**IPC**

The specific heat of gold is 0.031 calories/gram°C and the specific heat of silver is 0.057 calories/gram°C. If equal amounts of each metal are exposed to equal heating, which will heat up faster? The answers are: 1) The silver will heat up almost twice as fast. 2) The...

**History/Geography**

Thanks a bunch, Ms. Sue. I appreciate it. (:

**History/Geography**

20 More oil Tankers Attacked in Pakistan. I read the article on google, as assigned. The question is; what role does culture play in this event? And I'm drawing a blank. Any help?

**IPC**

which one of these is true? Which of the following statements is true? 1) The freezing and boiling temperatures of a substance are the same. 2) The freezing and condensation temperatures of a substance are the same. 3) The freezing and melting temperatures of a substance are ...

**IPC**

Oh, so you just set it up like a proportion? And thank you. (:

**IPC**

The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

**algebra**

Given the function f described by f (x) - 12x, find each of the following: f(-11) f(12) f(29)

**algebra**

Given the function f described by f(x)=12x, find each of the following: f(0) f(-1) f(2)

**maths**

find w from the formula k=wa+b when k =30, b=6 and a=4

**math**

is the answer 3 ?

**math**

find w from the formula k=wa+b whn k=30, b=6 and a=4

**Math**

2.1

**algebra**

The function H described bu H(x)=2.75x + 71.48 can be used to predict the height in centimeters of a woman whose humerus is x cm long. Predict the height os a woman whose humerus is 36cm long.

**simple math**

if i simplify 8x^(1/3) the answer will be 2x ,correct?

**5th grade**

thanks alot ineed alot of help :)

**Health Information**

The ability to accurately predict yearly expenses was one reason that large companies decided to a. offer HMO programs b. enroll in managed care plans c. self-insure their employees d. offer medical spending plans

**Health Information**

Medicare and Medicaid financial issues put constraints on a. physician services. b. critical care centers. c. public hospitals. d. outpatient services.

**Health Information**

You started working for a private insurance company before the inception of managed care. You've been talking with your co-workers about how different reimbursement was in the past. You commented that before managed care, your employer reimbursed providers on a a. ...

**Health Information**

You own a company in a state where state funds aren't mandated for employee health insurance. What's one option for providing your employees with health care coverage for work-related injuries? a. medicaid plans b. referrals to other network groups c. medical savings ...

**Law**

Explain the subject matter jurisdiction of federal courts.

**Law**

Compare and contrast contributory negligence with comparative negligence.

**Law**

Which of the following is most pertinent in a legal or courtroom context? a. Patient's expectation of privacy b. Confidentiality c. Privileged communication d. Etiquette

**health**

Sally sues for malpractice, claiming she didn't know that the operation could have (and, in this case, did have) negative consequences. Your office has a copy of an informed consent form signed by Sally. Explain how this affects the case.

**college**

If Dr. Jones is practicing "defensive medicine," what is likely to be his motivation for doing so?

**chemistry**

54.8

**Calculus (repost)**

Use implicit differentiation to find dy/dx if cos xy = 2x^2 - 3y. I'm stuck on this problem because I'm getting thrown off on how to factor this. Here's my work so far: -{[(dy/dx)y + y]sin xy} = 4x - 3(dy/dx) -{[(dy/dx)y + y]sinxy} + 3(dy/dx) = 4x ...now what? Thx

**Calculus**

Use implicit differentiation to find dy/dx if cos xy = 2x^2 - 3y. I'm stuck on this problem because I'm getting thrown off on how to factor this. Here's my work so far: -{[(dy/dx)y + y]sin xy} = 4x - 3(dy/dx) -{[(dy/dx)y + y]sinxy} + 3(dy/dx) = 4x ...now what? Thx

**Biology**

What biogeochemical cycles go on in a tropical rainforest? Thank you!!

**reading**

this is for a crossword puzzle,a visitor to a new place,one on a tour?

**physics**

I have a Pressure in atm and a volume in liters how do i find the temperature in kelvins?? I know the formula pv=nRT works...but i don't know the number of moles so... I don't know what to do.

**Physics**

never mind. I made a silly error. i got .01804 moles...multiplied that times 4.03grams and then multiplied that times 1000 and got 72.7mg. got it! thanks so much!

**Physics**

so i got the answer to be .01804 moles and i know one mole of helium is 4.03 g do i just multiply the two together? and then divide by 10000 to convert g to mg?

**Physics**

doesnt that give me an answer in moles? ...is there a way to convert moles to mg?

**Physics**

A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. If 15.0 J of work is done by the gas during this process, what is the mass of helium present? I am not sure what equations to use for this problem....

**Physics**

Having landed on a newly discovered planet, an astronaut sets up a simple pedulum of length 1.29 m and finds that it makes 567 oscillations in 1020 s. The amplitude of the oscillations is very small compared to the pendulum's length. What is the gravitational acceleration ...

**Physics**

Having landed on a newly discovered planet, an astronaut sets up a simple pedulum of length 1.29 m and finds that it makes 567 oscillations in 1020 s. The amplitude of the oscillations is very small compared to the pendulum's length. What is the gravitational acceleration ...

**math**

Why is (AB)^-1 = B^-1A^-1 in matrices, and not (AB)^-1 = A^-1B^-1

**math**

an extremely volatile substance, Ofnetite, has a half-life of 25 minutes. Find the percentage decrease of this substance in the first two hours.

**math**

OMG u are in watever grade and im in 6th and know how 2 do that!!!!

**pre-algebra**

twenty more than three times a number is -4.

**chemistry**

sorry i forgot some of the units in the initial posting 8.00g of NaOH are dissolved in water to make 4.00L of solution. What is the concentration of hydronium ions, , in this solution?

**chemistry**

8.00g of NaOH are dissolved in water to make 4.00 of solution. What is the concentration of hydronium ions, , in this solution?

**chemistry**

8.00 of are dissolved in water to make 4.00 of solution. What is the concentration of hydronium ions, , in this solution?

**math**

what's a prime number?

**Math**

Find the smallest postive integre that gives a remander of 2 when divided by either 3 0r 7, and gives a remainder of 3 when divided by 5.

**Science**

A set of controlled steps used to answer scientific questions is?

**precal**

could someone help me with this problem? find 2 postive and 2 negative coterminal angles of -(pi)/4

**research writing**

What would you do differently if your were just starting this course?

**science**

what is a website i can go on that is a website with enviromentally friendly prouducts and why?

**science**

talking

**science**

A. radiation

**science**

do you know any enviromentally friendly products, and why they are better for the earth?

**Business Communication**

D is the answer, subj is athletes, not one.

**Math**

for the deposit, use thsi as your equation: 1000(1+.07)^4 for the investment in RGF use this as your equation: 10000(1+.01)^6 Just plug them into a calulator to solve.

**Algebra I - Answer check**

2. a) 7^12/7^4 = 7^8 b)x^11/x^5 = x^6 c)12x^5/3x^2 = 4x^3 d)7x^6y^3/14x^3y = .5x^3y^2 5. a) (2x)^3(3x^2)^4 = 648x^11 b)(5x)^7/(5x)^4 = 25x^2 c)(2x)^5/-8x^3 = -4x^2 d)(4x^2y^5)(-3xy^3)^3 = -12xy^4 6. How long does it take light to travel from the Sun to Earth? Answer to the ...

**algebra 1**

Determine whether each trinomial is a perfect square trinomial. x^2-16x+64

**Algebra I**

thank you

**Algebra I**

Match expressions from this list that are equivalent but written in different forms. There can be multiple matches. I know that there is a group of 3, and a group of 2, matching expressions. Here are the expression-I need help figuring out how to go about this. a.) (2x^2)^3 b...

**algebra 1**

the terms a and b are being added. Since they are being added, and aren't the same variables, they cannot be factored.

**Math**

...what were your coordinates?

**Algebra I**

oh-wow.totaly mind blank there-thank you for answering my question. After reading it a while i finally got it! Thanks again

**Algebra I**

I guess i can try to clear it up. Sorry. So I'm adding the exponents of 1 for EACH variable/base x. That'd make it x^2. Okay, so if i have to rewrite the equation with just one exponent, then would i put the x^2 after JUST ONE of the coefficents? Like this: 4x^2(3) or ...

**Algebra I**

If i have two base variables with exponents for example: 4x(3x) After getting x^2-would i have just ONE variable base? i.e. 4(3x^2) or place the exponent on BOTH variable bases like this: 4x^2(3x^2)? Thanks!

**ALGEBRA**

Divide -272 by 2. Then check your work. THEN, make sure that when you add them, they equal two. If not, then you either did the math wrong, or my method is wrong. Either way, good luck.

**Algebra**

i go with y=mx+b. just plug in a point on the line, try to get a solid number, no decimals, and postive if possible. If not that's okay. Then plug in your slope and solve for b. So using (7,0) your equation should look kinda like this: y=mx+b 0= -8(7)+b ....that doesn'...

**Algebra I**

whoops, meant to post that as a question. just...disreagard that last comment please, and Thanks Reiny. Sorry-it's a very late Monday for me.

**Algebra I**

If i have two base variables with exponents for example: 4x(3x) After getting x^2-would i have just ONE variable base? i.e. 4(3x^2) or place the exponent on BOTH variable bases like this: 4x^2(3x^2)? Thanks!

**Algebra I**

(-4m^3)(2m+m^2) I have to use the property of exponents to rewrite the expression. I'm just asking if -3^6 is right. (we don't have to solve it--just simplify it) Thank you!

**english 1 honors**

ok that's what i was thinking. thank you so much :-)

**english 1 honors**

Can someone tell me the sentence structure of this sentence? In Frank R. Stockton's short story "The lady or the tiger?" one knows that the semi- barbaric princess motions to her lover to pick the door that contains the tiger.

**Algebra I**

thank you so much!

**Algebra I**

Write each percent change as a ratio comparing the result to the original quantity. Then write it as a constant multiplier. Book's example: 3% increase, 103/100, 1+0.03 I don't understand double digit numbers. The one that I have to solve is an 11% decrease. Tips, ...

**8th grade Science**

thank you

**8th grade Science**

I need help really bad. What are the three ways that unbalanced forces can cause an object to change it's motion?

**Algebra**

I have to write each of the following percent change into a ratio comparing it to the original quantity. Then I have to write it as a constant multiplier. This is the example in my book: 3% increase, 103/100, 1+0.03 So I understand how to do single digit numbers, like 8, but ...

**s.s**

What are some synonyms for one and another?

**5th grade**

how do you get rid of bad luck?