Physics - January 2007

2007-01-18 08:40:03 · 2 answers · asked by asdfasdffdas 1

2007-01-18 08:38:18 · 4 answers · asked by asdfasdffdas 1

2007-01-18 08:24:14 · 4 answers · asked by jedi1josh 5

For the people who have to see something on tv first - explanation: possibility of 'blasphemy power stations', where blasphemy is used to provoke lightning from gods.
This question was removed because it wasn't understood. What about this time?

If it is DC lightning, the current would reduce as the charge in the earth builds up. So unless we discharged to the moon, and then Mars and Venus, the power would fail. And when we do discharge, where will it go from - skyscrapers? Would the gods switch to AC power?

If AC, what shape would the wave be - sine, square, shepherd's crook?

2007-01-18 08:14:30 · 8 answers · asked by Chris cc 1

2007-01-18 08:05:14 · 5 answers · asked by Lee 2

Yesterday I asked a question about what would happen if I fired a bullet on a train traveling near the speed of light. One of the answers I received said that if the train was traveling at 99mph and I fired a bullet at 100mph, I would see the bullet travel at only 1mph. My thought on this is that the answer is flawed because the bullet was already traveling at 99mph before I fired it, the gun added an additional force behind it to make it go 100mph. So the bullet should travel a total of 199mph. So back to my original question of what would happen if I fired a bullet on a train traveling at near speed of light, and the bullet itself traveled at near speed of light. the two speeds total more the the speed of light which is impossible. So each objects speed must total less than the speed of light, making each object highest speed less than half of the speed of light.

2007-01-18 07:51:13 · 7 answers · asked by jedi1josh 5

I am ready to go home, but it's five minutes early than when I looked last time.

2007-01-18 07:48:43 · 13 answers · asked by Anonymous

I have heard that when trying to define our universe, you need to use more than 3 dimensions. What for? Consider our earth: We can define space for miles and miles in all directions in only 3 dimensions. Wny then do we need other dimensions like time?

Please explain in simple language and with simple examples.

2007-01-18 07:43:53 · 6 answers · asked by JiveSly 4

What is the acceleration formula I would use to solve this problem?

Also what is the deceleration formula I would use on this problem:

Find the deceleration of a truck that goes from 30 m/s to rest in 6 seconds.

2007-01-18 07:03:11 · 6 answers · asked by Anonymous

2007-01-18 06:57:09 · 1 answers · asked by curious 1

We all know that the physical markers for the Celsius temperature scale are the freezing and boiling points of water at one atmosphere of pressure equaling 0 and 100 respectively.

So what are the physical markers of the Fahrenheit scale?

2007-01-18 06:36:30 · 6 answers · asked by sprcpt 6

A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20×104 Pa, while in the region of blockage it is 1.15×104 Pa. Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is traveling at 30.0 cm, and the specific gravity of this patient's blood is 1.06.What percentage of the cross-sectional area of the patient's artery is blocked by the plaque?

I would appreciate any kind of help, hints in how to start the problem thank you.

2007-01-18 06:23:49 · 1 answers · asked by Anonymous

...or is it an extremely expensive wild goose chase?

How do we know when to give up, or is it a blank cheque?

2007-01-18 06:21:54 · 9 answers · asked by mesun1408 6

What is the effect of
thrust
drag
gravity
and buoyancy
on a submarine
Please answer each.

2007-01-18 06:13:33 · 5 answers · asked by ♥ 3

Can you suggest some nice books on 'time travel'. Not fiction please!

2007-01-18 06:12:30 · 8 answers · asked by Anonymous

2007-01-18 06:11:30 · 6 answers · asked by Ha!! 2

is Work also changing energy?

2007-01-18 06:01:46 · 5 answers · asked by Ha!! 2

a flat circle of radius 18 cm is placed in a uniform electric field of magnitude 5.8 x 10^2 N/C. What is the electric flux through the circle when its face is (a) perpendicular to the field lines, (b) at 45 degree angle to the field lines, and (c) parallel to the field lines?
How do you figure this out?

2007-01-18 05:56:16 · 4 answers · asked by Anonymous

2007-01-18 05:20:59 · 17 answers · asked by Simplicity 1

I mean exact model with exact formulas, that is obtained from quantum or classical optics that for examples describes fringe patterns as you know fringe patterns in single electron double slit experiment differs from Fraunhofer or Fresnel fringes.

2007-01-18 05:07:57 · 3 answers · asked by arahmaninejad 1

I need to convert 4 grams/second of flow or pressure into cfm or hg?

2007-01-18 04:53:19 · 3 answers · asked by tseames 1

how long a period can space travellers stay on the space station ?

2007-01-18 04:41:08 · 4 answers · asked by 0utsider f 1

A bicyclist can cost down a 5 degree hill at a constant 6km/h speed. If the force of friction (air resistance) is proportional to the speed v so that Ffr=cv, calculate:
a)the value of the constant c
b) the average force that must be applied in order to descend the hill at 20 km/h. The mass of the cyclist plus bicycle is 80 kg.
I solved part a(or i think so!) c=459,4 . If anyone tells me the b part, i take A+ at physics. PLZ HELP

2007-01-18 04:39:01 · 5 answers · asked by Anonymous

is it true or false?

2007-01-18 04:31:49 · 3 answers · asked by Anonymous

I don't want to mention the company, but I've found on their website that they developped a 840k-piksel real-object imaging device...Is there anyobdy here who could possibly explain to me what it means? Pleeaaasseee!

2007-01-18 04:13:01 · 1 answers · asked by Zephyr_Seven 1

2007-01-18 03:58:18 · 3 answers · asked by ufc_babe 2

2007-01-18 03:50:07 · 1 answers · asked by curious 1

A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 15 m/s. how long in the incline and how long does it take him to get to the bottom?

2007-01-18 03:42:12 · 2 answers · asked by Anonymous

2007-01-18 03:14:02 · 3 answers · asked by Anonymous

2007-01-18 03:11:19 · 3 answers · asked by Anonymous