Homework Help

hey i'm doing a stastics math project. just wanted to knowif anyone has cool idea on what subject i should do it on.... ie. The number of sales an icecream man makes a week... smthn like that thx

Protein foods also supply energy to the body. If the person eats a lot of protein foods, the body uses the energy in the protein foods instead of using stored fat in the body. Is this statement correct? I'd think our bodies will use protein as source of energy only when we are in a state of starvation. Protein taken should be converted into amino acids first and then used to synthesize usable protein and excess are excreted.

Is it ok to ask for free tutoring from people on this forum? If I am please return message if you can tutor me a little? Or just some help. Email if you can XChinesemonkX@yahoo.com Thanks for the help

[math] $If$ [/math] [math] \int_a^b f(x) dx = a +2b [/math] [math] $then$ [/math] [math]\int_a^b (f(x) +5) dx = ?[/math] How do you work this one out? The "+ 5" part is really screwing me up.

hi guys..my name is casey-and im new here, i was reading some stuff around, and you guys really knwo your stuff!!! i am currently enrolled in Honors Biology, and i am a sophomore at my high school. we have a project due on tuesday on two books Hot Zone and Cobra Event...im sure you guys have read them...they are pretty good books, especially that Hot Zone. This project is huge, and has 18 different parts. I was wondering you guys could help me with a couple that i am stuck on.. 1. "Are Viruses alive" Include a discussion of the characteristics of life, organic and inorganic matter, and those characteristics that both living and non living share... 2…

Hey just wanted to check my answer for this question damn answers in back of book only being for every 2nd question i get v = 1.40m/s well heres the question

What does coherent exactly mean? What does same phase difference refer to? Why these two factors must be present so as to create interference?

Hi Guys, For a physics practical investigation I will be investigating the change in height (angle) of an inclined plane and the time taken to travel down the incline. Now for my hypothesis and results I am a bit stuck. For the hypothesis I will be using the following formula. x=ut+.5at^2 Where: x=distance down the incline plane (meters) u=Initial velocity (m/s) t=time taken to travel down (seconds) a=acceleration down the incline plane (m/s/s meters per second per second) Now for our situation x=1.58 u=0 t=? a=gSinΦ (Φ varies with different heights) So now I can build a relationship between the height (or the angle of inclination) and the tim…

what would have been an alternativefor GPS. what technology would replace the GPS in the near future??

1. A child comes into your ER crying, with a fever, stiff neck, and you suspect bacterial menegitis. List and describle each step in sequence that you would use to decide within antibiotic to use and how much? 2. You prick your finger with a rose thorn and microogranisms are introduced. Explain how these non-specific immune resposes act to protect you from pathogens. A. Phagocytosis B. Complement (against bacteria) C. Interferon (against viruses) Your help woulod be greatly appreciated.

This is a question where i have absolutely NO idea where to start: How long does it take for radiation from a cesium-133 atom to complete 1 million cycles? (ans: 1.087828 x 10^-4s) Also another question: Your friend holds a ruler by one end, letting the other end hang vertically. At the lower end, you hold your thumb and index finger on either side of the ruler, ready to grip it. Your friend releases the ruler without warning. You catch it as quickly as u can. if you catch the ruler 5.2cm from the lower end, what is your reaction time? (ans: 0.1s) (I can't seem to gather enough info from the question except for distance = 5.2cm and g = 9.8m/s...) Can anyo…

Hi, couple of questions i don't have a single clue how to answer. Four identical cells, each of emf 1.5V and internal resistance 2.0 ohms are connected in parallel by joining like terminals together. A 7.0 ohm resistor is then connected from the positive to the negativ eterminals. Calculate the current through the 7.0 ohm resisitor!?!?!? and... A generator of emf 20v and internal resistance 0.50 ohms is used to charge a car battery of emf 12V and internal resistance 0.10 ohm. They are connected in series together with a resistance R whose value is adjusted to give a charging current of 2.0A. what is: total emf in the circuit The value of R the …

Here is the problem that was set up as a lab experiment. We ran a car on a Rail (assumed to be frictionless) and collided it with another (stationary) car. There were three trials and I have gathered thwe average of the the Next we added three rayovac cells to the car and repeated the same process. I will provide the work already performed (i do not think it is correct) but here goes. the weight of the car without batteries is 985.5g = 0.986kg the impacted car car is posistioned at 100cm on the rail. Xi =100cm = 1m average Xf = 38 cm = .37m Ti =0, average Tf =4.25s We are to find the following: Here goes The problem states to find the following…

I worked out the problem...I'm just not sure if it's correct. A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak. It seems simple enough... First I used vf = vi + a*t I figured it out to be vi = 30.6 m/s Then I used vf^2 = vi^2 + 2ad My final answer was d = 47.9 m P.S. I'd be very grateful if someone would tell me if I'm in the right direction atleast

Hey i am currently studying for a physics exam and the questions we have been given have answers to only the odd numbered questions. But i like to be throuhgly prepared for exams and so am doing all of them. As you have probably guessed by now i need some help with an even numbered question. I think i have done it, but i am pretty unsure, so i would really really like to check if my answer is correct. I will attach the problem as a picture. Thanks Sarah p.s i wasn't sure whether to post here or in the physics:classical mechanics section of the forums. tell me if i should repost or whatever

I need some explanantion on this question. A crow drops a shell from a height half the height from which a seagull drops a shell. When the crow's shell hits the rocks below, is it moving half as fast, less than half as fast or more than half as fast the seagull's shell? The answer is: more than half as fast Can any1 explain why? Also, I need help with this question. Bills steps off a 3m high diving board and drops to the water below. At the same time Ted jumps upward with the speed of 4.2 m/s from a 1m high diving board. choosing the origin to be at the water's surface, and upward to be the positive direction, write x-versus-t equations for the motion for…

Can any1 help me with these 3 questions? 1. A fountain rises to a height of 560ft. a) what is the initial speed of the water? b) how long does it take for the water to raeach the top of the fountain? (ans:58m/s, 5.9s) I used v = u + 2as where v = 0, u =? and s = 17.07m (after converting 560ft to cm then to m...1ft = 30.48cm right?) I found u to be 18.29m/s. I don't understand why my answer is so way off! 2. Wrongly called for a foul, an angry basketball player throws the ball straight down to the floor. If the ball bounces straight up and returns to the floor 2.5s after first striking it, what was the ball's greatest height above the floor? I can't seem …

A volcano ejects a lava bomb straight upward with an initial speed 23m/s. Taking upward to be the positive direction, find the speed and velocity of the lava bomb a) 2 seconds b) 3 seconds (Ans: a)3.4m/s, 3.4m/s b) 6.4m/s, -6.4m/s) i don't understand why the speed and velocity are both positive for a) but for b), the velocity is negative but the speed is positve. can any1 explain to me plz? thanx

can some1 help me with this problems? 1. Michael Jordan's vertical leap is reported to be 48 inches. What is his takeoff speed? (ans. 4.9m/s) i first converted 48 inches to 121.92cm (inches to cm is inches x 2.54 right?) and then i used v^2 = u^2 + 2as where v is 0, a is -9.8m/s/s, and s is 121.92m. however, the ans. coms to 48.88m/s. can some1 tell me wat's wrong? thanx

I've got some physics questions which I think are meant to be VERY basic and easy but i can't do them or get the right answer! can some1 plz help me out with some tips, suggestions or the steps i should take in trying to solve these questions? 1. A gymnast is swinging on a high bar. At the top of his swing his speed is momentarily zero and his centre of mass is 1.1m above the bar. At the bottom of his swing his centre of mass is now the same distance below the bar. What will be his speed at the bottom of the swing? (Ans: 6.6m/s) 2. What power must a crane generate to life 1 tonne of bricks at the speed of 1m/s? (10^4 W) 3. The human nervous system can propagat…

i need help on pendulums on the variable that affects the swing time of it. thnaks

I've heard of so many ways to bring your grade up in a month before the quarter ends. But... none of them work unfortunately and I'm aiming for a private school next year. And if I don't make this third quarter cut I may not make it in. Some ways I've heard are extra credit, cutting the "fun" permantly from your life and just FOCUS all your attention on your work, sucking up to the teach, and finally counseling. All these don't work. Trust me. Some study tips are kindly accpeted and can someone tell me how to get rid of this metal block. I CANT THINK STRAIGHT. I thought my name was Bob one day!

At the moment I am doing a project on the allele for prescence of mid phalangeal hair.. What I have to do is pretty much collect a bunch of data, stick it in excel, and ramble for a few pages. I would like a more thorough definition of what it is, but there doesn't seem to be much information around about it. Obviously it is the prescence of hair in the middle joint of a persons fingers, and I see that it is dominant, but that is about all I can gather.. Does anyone know any more about this?

For a beaker of water containing carbon dioxide gas with a thick layer of paraffin oil on the top, why can't oxygen pass through the oil layer and dissolve into the water but carbon dioxide can diffuse through the layer and reach atmosphere?

SuP. Have 2 questions about electricity. This is from an assignment, I'm finished, except for these 2. 1. List how you could increase the size of the electric current produced by a generator. 2. Draw a cross-section of a moving coil loud speaker and label the components. I can't find a cross-section of the ..... in a speaker on the net, and best I found wasn't all that good my teacher said, and now I forgot the site. How do you increase the size of the current made by a generator? Do you use a transformer? What are other ways? I'd really appreciate some help, this is due this friday. Thanks.