Recent content by HT3

It comes down to the basic fact that all living things are made up of one or more cells. Fire is not made up of cells therefore cannot be considered life. Although it is an interesting statement.

Homework Statement If spraying of grasshoppers with 800kg/km^2 of a certain insecticide will kill 40% of these insects, how much insecticide is needed to kill 98% of the grasshoppers? (assume exponential relationship) Homework Equations \intdP/dt=\intkp lnP=kt+c e^(kt+c)=PThe Attempt at a...

NEVERMIND I SOLVED IT i was on the right way i just realized that a=al*R and if i plug that in my answer is correct. thanks to any1 who viewed it anyways

this lab is very similar to mine basically i can only seem to derive a portion of the formula, I=mgb/al - mb^2 where b- radius, g-gravity, al- angular acceleration. I do not get the right answer: here is what i did do however, Fnet=ma T-mg=-ma (acceleration is downwards) so T=(mg-ma) so then...

Rotational Kinematics HELP!? I desperately need help with two rotational kinematics problems. I do not know what to do in both cases. If someone could be kind enough to go through a solution for me to see it would be very helpful in understanding the problem. Please try and be detailed in your...

electrons are responsible for bonding. therefore, boiling point, melting point, etc. are determined by the electron.

Homework Statement http://img176.imagevenue.com/img.php?image=24632_help-please_122_195lo.JPG" Homework Equations The Attempt at a Solution How is the hybridization on B (a nitrogen atom - refer to pic) sp3? I only see 2 bonds? how else can i complete an octet? Could someone...

http://img176.imagevenue.com/img.php?image=24632_help-please_122_195lo.JPG" How is the hybridization on B (a nitrogen atom - refer to pic) sp3? I only see 2 bonds? how else can i complete an octet? Could someone explain the answers to me please..i have a day remaining before my exam..im...

ok so would it be mgsintheta? but i don't have theta? so how can i get the netforce acting on the car

please help both of my problems posted are due tommorow worht marks and I am so lost please !

Homework Statement A person pushes a 10.0 kg mass up a 7.60 m long, 20 degree ramp( mu=.170) with a horizontal force of 70.0N. Find the work done by the person and the heat energy generated by friction. the answer for heat energy i canot get..its supposed to be 150J Homework Equations...

bump please help :(

Homework Statement A 1100kg car can accelerate from 0-60kph in 6.5 seconds. With constant engine power, what is the steepest hill the car could climb at 20 kph. Homework Equations F=ma W=Fd P=W/t g=mgSin(theta) maybe work energy theorem? The Attempt at a Solution Not Much...just...

okay from my freebody diagram i get sin(10)=9.8/a a=56.4 and that is wrong...if anyone could explain to me how to do it properly please...id greatly appreciate it because i have my exam very soon.

Homework Statement A skier is gliding along at 3m/s on horizontal frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 15 m/s. a) what is the length of the incline? b) how long does it take for him to reach the bottom? we know: Vo=3m/s Vf=15m/s t=...