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# black_star_47001

• ### Calculus Problem? *I do not want the answer*?

"Suppose you are standing in a field near a straight section of railroad tracks just as the locomotive of a train passes the point nearest to you, which is 1/3 mile away. The train, with length 4/5 mile, is traveling 13 mile/hr. If you start running in a straight line across the field, how slowly can you run and still catch the train? In which direction should you run?"

Please do not give me the answer! I'm just foggy on how to go about this. I know I would maximize distance in order to minimize speed, but I just can't think how to set this up. If someone could help I'd really appreciate it. Thanks!!

• ### What is the best diaper brand?

I'm a (soon-to-be) first time mom and I want to get opinions from all parents about the best brand of diapers. I've heard that Pampers leaks more so than other brands.. any personal good/bad experiences with certain brands?

• ### I'm 99% positive my mom just broke her hand. Please read inside.?

My mom just hit a dog in the head (the dog was attacking our dog, she wasn't being unjustly cruel) and her hand popped and she said she felt a blinding pain. Her face is white, her hand is bruising already, and there is a bump below where her knuckle should be below her pinkie. Her knuckle is no longer apparent. She can't move her hand. We put ice on it, but we can't get to the emergency room for another 3 hours. What can we do to keep it from getting worse in that time?

• ### Calculus domain problem?

f(x)=x^2 ln(1-x^2)

I have to find the domain of f. I would assume it to be all real numbers, but the back of my text book say (-1,1). Can anyone please explain? Thank you.

• ### Projectile motion problem?

A projectile is fired with an initial speed of 113 m/s at an angle of 60 degrees above the horizontal from the top of a cliff 49m high. Find:

a) the time to reach the maximum height

b)the maximum height

c)the total time in the air

d)the horizontal range

e)the components of the final velocity when the object reaches the ground.

I used the fact that at the maximum height, the vertical velocity is 0m/s. I also know that the initial vertical velocity is 113*sin60. With this, I found the time to be 10. seconds. I then used the time to find the maximum height of 540m. I'm now stuck on how to find the total time in the air as well as the range and the final velocity components. If someone could explain to me how to approach it, I'd really appreciate it.

• ### Spanish Homework Check?

So I have pretend like I'm in an exchange program and write a letter to the family I will be staying with to tell them about myself. Could some fluent or native-speaking check my letter? I don't know how to get the accents on my computer, so I'll use apostrophes. Thanks!

Quereda familia Santos,

Hola! Me llamo Madison. Tengo 17 anos. Vivo en Los Estados Unidos y soy estudiante en la escuela secundaria. Me gustan las matematicas y las ciencias. Soy vegetariana. No como las carnes. Estoy muy emocionado visitar Panama'. Quiero dar un caminata en los montanas y ver las selvas de Panama'. Lei' sobre los bonitos pa'rajos en la selva y no puedo esperar para verlos. Espero verte pronto!

Atentamente,

• ### Spanish Homework Check?

So I have pretend like I'm in an exchange program and write a letter to the family I will be staying with to tell them about myself. Could some fluent or native-speaking check my letter? I don't know how to get the accents on my computer, so I'll use apostrophes. Thanks!

Quereda familia Santos,

Hola! Me llamo Madison. Tengo 17 anos. Vivo en Los Estados Unidos y soy estudiante en la escuela secundaria. Me gustan las matematicas y las ciencias. Soy vegetariana. No como las carnes. Estoy muy emocionado visitar Panama'. Quiero dar un caminata en los montanas y ver las selvas de Panama'. Lei' sobre los bonitos pa'rajos en la selva y no puedo esperar para verlos. Espero verte pronto!

Atentamente,

• ### Limits of a piecewise defined function?

I have the function:

h(x)={x if x<0

x^2 if 0<x<2

8-x if x>2

I have to find the limit as x approaches 0, but since 0 doesn't fit into any the fuctions, does it not exsist or what?

• ### y-intercept?

I know how to find y intercepts, but I ran into one problem where I don't understand how the answer was reached: y=2/(x-1)

For the y-intercept I set x=0 and solved. I came up with (0,-2). The book, however, says there is no y-intercept. Can anyone explain their answer? Thank you.

• ### y intercept?

I know how to find y intercepts, but I ran into one problem where I don't understand how the answer was reached: y=2/(x-1)

For the y-intercept I set x=0 and solved. I came up with (0,-2). The book, however, says there is no y-intercept. Can anyone explain their answer? Thank you.

• ### Same-sex relationship terminology?

My moms are in a same-sex relationship, and we are all having trouble with the terminology. I'm not sure what to call my non-biological mom. I already have a step-mom and a mom, so I don't know what to introduce her as. Saying she's my mom's girlfriend sounds too temporary, and introducing her as my mom's life partner sounds like I'm trying to be politically correct, plus it feels weird. Does anyone have any suggestions? The other issue is what my mom should call her partner. They don't like to say ''wife'' because she's a little on the masculine side, and again, saying she's my mom's partner isn't really comfortable for any of us. So we are looking for suggestions on what to refer to my mom's...partner (for lack of better word) as in the context of "my (insert term)" and "my mom's (insert term)". If I've made this too confusing just let me know. I can clarify.

Thanks!

• ### How do I know the if a college has a strong biology program?

I have a book listing te 366 best colleges in the U.S. and inside it has a list of the top 20 schools for biology. However, there are other schools that I am looking at. I've looked at the schools' websites, but each site says the school has a strong program in each major. So how would I go about seeing if a college does indeed have a strong biology program? Also, in the book I have it names each school's most popular majors. Does the popularity of a major at a given school affect the strength of the program?

Thanks

• ### Political Cartoon?

http://www.printsoldandrare.com/thomasnast/270tnas...

Could someone please help me with the meaning of this cartoon. It's kind of hard to read, but at the bottom it says, "The upright bench, which is above criticism."

Thanks

• ### How do I be assertive to a teacher without being disrespectful?

I am extremely passive, often to the point of being a doormat, but I really need to stand up to my teacher. My teacher gave out a project assignment on Friday (2/25) That was due on Monday (2/28), and I was absent. She told me I had to have the project completed for Wednesday, but I just haven't had enough time. Everyone else got three days to complete the assignment and I was only given 2. How do I tell her (or ask her) to give me 1 more day? I really don't want to sound like I am making excuses, or as if I'm trying to buy time; I just really need one more day. Just a reminder, I am not assertive. I really need help! Thank you.

• ### Where can I find outstanding warrants fot the state of Tennessee?

Where can I find outstanding warrants fot the state of Tennessee?

• ### how do I get caffeine pills out of my system...fast?

I have really bad insomnia and I'm out of melatonin (natural chemical that helps me sleep), so last night I couldn't sleep at all. Now I'm having troubles staying awake (irony?). I have to go to work in 30 minutes, so I took 2 caffeine pills an hour ago. I can't stop shaking (more like fast trembling) now and I feel really weak. Is there any way I can speed up the removal of the caffeine from my body?

• ### Hess's Law and Enthalpy?

My chemistry teacher had to leave for a few weeks while her husband is having back surgery. She left my class notes and an assignment. She gave 10 people in my class a section of the current chapter to present/teach to the class. My section deals with Hess's law and enthalpy. I read the chapter, the notes, and the definitions, so I do not need those to be repeated. I need someone to please explain to me what enthalpy and Hess's law are, essentially. I kind of understand it, but not well enough to present. If someone could help I would be extremely greatful. Thanks!

• ### Alternative methods for mouse control?

My mother and I have mice in our home, we need to get rid of them (obviously), but I absolutely refuse to use mouse traps for a few reasons, 1. they kill, 2. the death is usually not instant, 3. the death is messy, and 4. I don't want the animal to suffer. Is there any alternative method I could use to remove the critters, preferably with out having to kill them?