Physics - July 2007

2007-07-09 02:28:24 · 11 answers · asked by ArindagR8 1

Please help us out we need this answer for an expo... thank you! : )

2007-07-09 01:42:17 · 9 answers · asked by Anonymous

of 30 amperes flows through a system with 16 ohms resistance and electromotive force of 120 volts, find the current that a 200-volt electromotive force will send through the system. thankss.

2007-07-08 23:51:09 · 4 answers · asked by Ocean Princess 1

..cont..
At the same instant, a car with a speed of 1.5m/s & 10m away from the intersection (perpendicular to the railway), is in a hurry to beat the warning signal. If the car kept a constant acceleration of 0.25m/s^2, is it possible for the car to pass through the intersection without colliding w/ the train?..

2.) The motion of the truck is given by the equation: v=dt+ct^2, where d=50cm/s^2 & c= -5cm/s^3. Determine the..
(a) average acceleration from t=1.5s to t=5.0s
(b) instantaneous acceleration when t=3.0s

3.) the motion of a particle is described by the equation:
x=ct^2+b, where c=10cm/s^2, & b=5cm. Determine the instantaneous velocity when t=1.75s.

I really need your help guys..pls...
it's very important and urgent..
lots of thanks in advance..(^_^)

2007-07-08 22:14:08 · 3 answers · asked by eM-eM 1

Is there a way to differentiate a pure Copper item from that of a Copper Alloy just by simple means? e.g. weight or density?
as in don't need all those complex lab experiments and apparatus?

thank you. =)

2007-07-08 22:02:54 · 2 answers · asked by c00ki3m0n5tr 1

I am still very confused. Let's say the mass of a moving object, speed, and everything else remains unchanged. The only difference being the circumference.

Lets say the circumference is 1m and has 2.5m/s velocity. If everything else is unchanged, except that i increase the circumference to 2m. Will the velocity increase twofold to 5m/s and is this practical?

2007-07-08 21:54:58 · 5 answers · asked by Vienna 3

Which has a better conductivity for electricity:
Pure Copper or a Copper Alloy?

Why and any references? thank you. =)

2007-07-08 18:57:45 · 3 answers · asked by c00ki3m0n5tr 1

lol

2007-07-08 18:56:11 · 5 answers · asked by macho650 1

Other then Planets and Stars I mean does it have an end and if so do we just run into a wall lol??? Any Idea's??

2007-07-08 18:53:18 · 10 answers · asked by macho650 1

Which has a better conductivity for electricity: Thin or Thick Copper? Why? any references? thank you. =)

2007-07-08 18:44:54 · 4 answers · asked by c00ki3m0n5tr 1

My niece has a BS in economics and can't decide about law school.
She is very kind, a truly lovable human being, but being so smart has cost her any number of relationships with men, because she is so perceptive she can tell she is in some way incompatible with each. This is so depressing. Should she marry knowing it won't work out?
She can't do that. She has too much respect for the institution of marriage and doesnt' want a divorce.
Where are the empathetic brilliant guys in the U.S. who would like to marry?
My niece doesn't know I'm asking, and would be embarrassed, but I can't help myself.
You are supposed to marry someone, if possible, within 5 IQ points of your own IQ.
This is a serious question, please no nasty comments.

2007-07-08 18:09:48 · 25 answers · asked by Anonymous

How would you add polar coordinates without converting to cartesian and back.

For simplification, I will use the example of a robot. Lets say I drive 50m with an azimuth of 3rad. I then take a sensor reading at 2rad from the robot and it returns a distance of 10m from the robot to an object.

How do I calculate the objects position from the starting point of the robot without first converting into cartesian, adding the (x,y) pair, and then converting back into polar?

2007-07-08 17:40:12 · 1 answers · asked by Gary 1

sound 1 has an intensity of 38.0 W/m^2. sound 2 has an intensity level that is 2.5 dB greater than the intensity level of sound 1. what is the intensity of sound 2?

please help i dont get it :( . thanks!! any help would be great!!!! i think the answer is supposed to be 67.6 W/m^2 but how do u work it out? please show work thanks!

2007-07-08 17:21:57 · 2 answers · asked by spaceranger2010 2

Consider a piece of ice floating in water if the ice melt then what happens to the water surface height ( it goes lower, upper or with no change)

2007-07-08 16:49:54 · 19 answers · asked by FifiLone 2

I haven't but I believe the extreme, aching deliciousness of the muffin would cause the muggee to submit to the mugger and hand over all goods.

Also, what is the perihelion of the bran muffin Laika released into orbit in 1957?

2007-07-08 16:04:38 · 5 answers · asked by Diff 1

I mean like these were special from another universe and were SOOOOOO good

2007-07-08 15:45:34 · 14 answers · asked by Anonymous

2007-07-08 15:41:29 · 9 answers · asked by oldschoolrnb81 1

Get me your best punch line

`

2007-07-08 15:34:52 · 13 answers · asked by Anonymous

suggestions?

2007-07-08 15:30:11 · 8 answers · asked by Anonymous

2007-07-08 15:29:37 · 10 answers · asked by Anonymous

a banana and a bran muffin?

2007-07-08 15:29:34 · 6 answers · asked by Darth Cheney 7

cause when it comes out, it could be either one?

2007-07-08 15:29:18 · 3 answers · asked by Anonymous

2007-07-08 15:27:54 · 4 answers · asked by Proverbs 1:7 2

2007-07-08 15:26:53 · 6 answers · asked by mrs O 6

2007-07-08 15:25:09 · 11 answers · asked by Anonymous

red giant cherry and bluberry bran muffin

2007-07-08 15:24:44 · 1 answers · asked by Proverbs 1:7 2

2007-07-08 15:24:25 · 3 answers · asked by Kerilyn 7

2007-07-08 15:24:22 · 2 answers · asked by Anonymous

2007-07-08 15:21:29 · 5 answers · asked by Anonymous

upon impact?

2007-07-08 15:21:12 · 2 answers · asked by Anonymous