Physics - September 2006

are u that smart if so u get10 points

2006-09-27 15:31:57 · 12 answers · asked by Rey Mysterio12 M 2

a short answer 2-3 sentences would be fine

2006-09-27 15:27:00 · 4 answers · asked by koushik c 1

Consider a long horizontal conducting wire with charge density
= 5.70*10^-12 C/m. A proton (mass = 1.67*10^-27 kg) is placed and
released 0.820 m above the wire. What is the magnitude of initial
acceleration of the proton?

My thought is: a=q*E/m

and E is: 2*k*charge density/distance to the proton or 2*8990000000*5.7*10^-12/.820m

but I can't get the right answer, which I know to be: 1.199*10^7.

Any thoughts??

2006-09-27 13:54:46 · 1 answers · asked by eltel2910 1

Here is the problem:
If an object changes in velocity from 50meters per second to 80meters per second in 15 seconds, then its average velocity during those 15 seconds is _______

Please explain the answer. I have gotten two different answers using different equations so Im not sure what I am supposed to use.

2006-09-27 13:51:55 · 4 answers · asked by ??? 2

I understand that light is a particle that acts like a wave,but what causes it to act like this?Is it some property of one of the fundamental forces?

2006-09-27 13:44:45 · 4 answers · asked by That one guy 6

drag race tires in contact with an asphalt surface probably have one of the highest coefficients of static friction in the everyday world

this is for ap physics

2006-09-27 13:34:16 · 3 answers · asked by Anonymous

The 1st supersonic flight was peformed by CAPT.CHARLES YEAGER in 1974.He flew at a speed of 300m/s at an altitude of more than 12,where the speed of sound in air is slightly less than 300m/s.Suppose CAPT. YEAGER accelerated from 120m/s to 300m/s in 25.0s.What was the magnitude of his accelebration?

2006-09-27 13:01:59 · 5 answers · asked by daranguyen_kpop4ever 1

1 theory has 26..1 has 10..1 has 11..1 has 12...why not just strings vibrating with no collasped diminsions

2006-09-27 12:50:56 · 1 answers · asked by Anonymous

the horizontal under the influence of a restraining force of 1064 N acting parallel to the include and up the incline. Down the plane is positive and up is negative direction. Acceleration of gravity is 9.8 m/s2.

What is the magnitude of accelaration of the block (answer in m/s)?

The resulting motion is: a) up the plane, acceleration is negative
b) down the plane, acceleration is positive
c) undetermined

2006-09-27 11:23:30 · 1 answers · asked by Dee 4

My friends and I were having a conversation and the question arose (somehow), "If you were to take a 7 foot (in diameter) sphere out of the center of the Earth and put a human in there, what would the effect be?" One of my friends says gravity would tear him apart or compact him, but another says forces would cancel out. If anyone can answer this I would be greatful.

2006-09-27 11:17:49 · 6 answers · asked by shizam90 2

I'm interested in how particles are arranged.

2006-09-27 11:16:18 · 5 answers · asked by maretahamre 3

2006-09-27 11:04:48 · 5 answers · asked by Ejsenstejn 2

2006-09-27 10:41:07 · 1 answers · asked by yayo_1988 1

2006-09-27 10:36:40 · 4 answers · asked by JW M 1

Consider a thin circular disk of radius R and mass M. Imbedded in the material of the disk, at a distance r from the center, is a mass m. Imagine that the disk is placed on a ramp inclined at angle THETA from the horizontal. What is the maximum distance, as measured along the ramp, the disk can roll UP the incline under gravity alone? Simplifications:
Consider only a disk allowed to move slowly without slipping.
Consider m>>M.
For definiteness, give the answer for these parameters:
THETA = 30°. R = 7.500, r = 6.800 (Three decimals ought to do it)
The first correct answer gets 10.

2006-09-27 10:26:29 · 3 answers · asked by 1,1,2,3,3,4, 5,5,6,6,6, 8,8,8,10 6

2006-09-27 10:05:28 · 1 answers · asked by Ilham Aliyev 2

While driving a convertible (with the top down) at 80mph a fly was hovering by the passenger seat. Why can't i leave it behind even if i accelerate the car?

2006-09-27 10:00:01 · 12 answers · asked by ★ Alvin ★ 1

The cable on the right has tension of 360 N and makes an angle (#1 unknown) with the ceiling. The cable on the left has tension 490 N and makes an angle (#2 unknown) with the ceiling.

What is the angle (#1 on the right) that the cable makes with respect to the ceiling (answer in degrees).

What is the angle (#2 on the left) that the cable makes with respect to the celing (answer in degrees).

2006-09-27 09:35:28 · 2 answers · asked by Dee 4

Not to sure what their like, what modules do you study in greater depth? + what sort of support do you get if you have a learning disibility?
please can i get some serious answers this time instead of people critising my spelling, thanks!

2006-09-27 09:25:59 · 4 answers · asked by s 2

the centripetal force on the car is 6000 newtons. what is the radius of the curve?

160m
80m
32m
16m

2006-09-27 09:19:06 · 5 answers · asked by sweetness01201 2

2006-09-27 09:01:39 · 6 answers · asked by consumer 1

i heard that it hurts

2006-09-27 08:54:09 · 18 answers · asked by jessica m 1

i heard that it hurts

2006-09-27 08:53:35 · 7 answers · asked by jessica m 1

A roller coaster travels 40.1 m at an angle of 31° above the horizontal.
How far does it move horizontally?

How far does it move vertically?

2006-09-27 08:43:01 · 2 answers · asked by justinegunderson 1

conductivity
efficiency
work
horsepower

2006-09-27 08:31:44 · 9 answers · asked by sweetness01201 2

2006-09-27 08:29:27 · 1 answers · asked by Martin K 1

The mass and acceleration of an electron are measured and the following data are collected, in the scientific notation.
() = it's normal replace the thing type in small on the head of the number. i think it's the power of

mass of electron = 9.10*10(-31)kg
acceleration of the elctron =2.4*10(2)m/s(2)

You know that force = mass x acceleration. What is the force on the electron?


tanks

2006-09-27 08:28:09 · 6 answers · asked by Anonymous

Initially the box is at rest. Person pushes box gently, but gradually increases the force so the force exerted on the box varies in time as F = (8.6 N/s)t. After 3 s they stop pushing the box. Force is always exerted in the same direction.
How far have they pushed the box in 3 s (answer in m)?
What is the velocity of the box after 3s (answer in m/s)?

2006-09-27 08:23:42 · 5 answers · asked by Dee 4

orbitsof planets in solar system r- sun, mercury, venus, moon,mars,Jupiter and saturn. correspindingly the week days shd. be as: sunday, wednesday, friday,monday,tuesday,thursday and saturday, even in order of orbits of planets counted from earth is not in order. why?

2006-09-27 07:53:57 · 1 answers · asked by Dr.Dynamis 2

Example: A "Black Hole" has enough gravity to keep light from escaping?

2006-09-27 07:50:21 · 13 answers · asked by the_news_junky 2