turtle

A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer observes a frequency of 122 Hz. What is the speed of the train? Use the speed of sound as 340m/sec

Please explain how to work this out, that will help me more than just an answer.

If a piano tuner hears 3 beats each second when listening to a 8 Hz tuning fork and a single string on the piano which is of higher frequency.. What is the frequency of the single string from the piano?

Please explain how to work this out. Just an answer won't really help me.

Neglecting the pressure drop due to resistance, calculate the blood pressure in mmHg in an artery in the brain 32 cm above the heart. The pressure at the heart is 120mmHg and the density of blood is 1.05g/cm3.

Please don't just tell me the answer, explain how to solve for the answer

Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 7.6% and the body increases blood pressure to maintain a constant flow. Calculate the needed percent increase in pressure.

An artery supplying heat muscle with blood is occluded to 13.9% of its original radius by a clot. By what percent is the blood flow through this artery reduced.

Neglecting the pressure drop due to resistance, calculate the blood pressure in mmHg in an artery in the brain 32 cm above the heart. The pressure at the heart is 120mmHg and the density of blood is 1.05g/cm3.

A full term fetus may have a mass of 3.3 kg . If the entire weight of the fetus rests momentarily on the mother's bladder, supported on an area of 78.8 cm2 calculate the pressure exerted in mmHg.

A swimming pool has dimensions 26 m x 32 m and a flat bottom. When the pool is filled to a depth of 3 m with fresh water, what is the total force due to the water on the bottom?

I can't decide which to replay so whichever gets the most votes is the one I'll do!

I have been stuck for a while on this one! Can someone help me out

Question:

Yo momma's so fat that objects 5 meters away accelerate at 1 m/s^2 toward her. What is yo momma's mass if G = 6.67x10^-11 Nm^2/kg^2?

One testicle to be bigger than the other 2

alright so i like just made my Haitian neighbor really really mad, I accidentally drove my car into her yard (i had aggressive passengers ok so i'm a good driver) and now she said shes going to put a hex on me because that was the last straw and she's had enough of me (i toilet papered her house last halloween because she kicked my dog). Should i be worried. and i know she does voo doo stuff because on some nights you can hear some funky chanting goin on...

ok so in english class this kinda strange dude sits in front of me and he's got a dog-tag that he wears that reads "who's your llama?" well what the hell could that mean?? what do you think?

you know what to do

why

ok, i have an ipod touch 2g running 3.1.2 (it's jailbroken so i never updated). i want to go ahead and update to the iOS 4.0 but i dont know of any things that can jailbreak it for a windows computer. so really all i need to know is what can i use to jailbreak an ipod touch 2g running ios 4.0 on a windows computer, is this even possible yet?

post some weird and janky names youve heard before

It's a dell on windows xp. if it's okay, what can be done to quiet it down?!

Think of some of the craziest names you've ever heard.