Physics - September 2007

A. deflation
B. depostion
C.runoff
D.discharge

2007-09-21 06:54:01 · 4 answers · asked by LaKeshia H 1

Or are such concepts irrelevant to systems?

2007-09-21 06:51:25 · 4 answers · asked by Sidereal Hand 5

Snowballs are thrown with a speed of 13 m/s from a roof 7 m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 25 degrees above the horizontal. (A) Is the landing speed of snowball A greater than, less than, or the same as the landing speed of snowball B? Explain. (B) Verify your answer to part a by calculating the landing of both snowballs.

2007-09-21 05:27:59 · 5 answers · asked by mmeee 1

I'm currently doing a report and wanted to have a 3d plot of one of the things in my report, but it consists of two seperate defined layers where one is at a higher depth than the other. I was wondering if i could make something like this in excel useing their surface plot tool. (i want to be able to compair the dip of the lower surface with respect to the upper surface)

2007-09-21 05:13:47 · 4 answers · asked by , 2

I'm unsure of where to began... any help out there?

2007-09-21 05:05:58 · 1 answers · asked by Anonymous

2007-09-21 04:58:57 · 3 answers · asked by sportsfan6702002 1

2007-09-21 04:18:44 · 8 answers · asked by Maya 1

I have just seen an unusual Bee fly passed me... it was red in colour and made the same sound as a Bumble Bee... it looked more like Denis the Menis than the English Garden bee any ideas what type it could bee lol?

2007-09-21 04:14:13 · 8 answers · asked by Anonymous

Snowballs are thrown with a speed of 13 m/s from a roof 7 m above the ground. Snowball A is thrown straight downward; snowball B is thrown in a direction 25 degrees above the horizontal. (A) Is the landing speed of snowball A greater than, less than, or the same as the landing speed of snowball B? Explain. (B) Verify your answer to part a by calculating the landing of both snowballs.

2007-09-21 03:43:17 · 1 answers · asked by mmeee 1

Suppose atoms at rest emit visible light with a wavelength of 500 nm. At what wavelength would the light from the atoms be observed if the atoms were moving toward the earth at a speed of 20,000 km/s?

2007-09-21 03:21:45 · 3 answers · asked by New Mommy 1

How far would I be able to fly?

2007-09-21 02:53:00 · 10 answers · asked by Bill W 【ツ】 6

2007-09-21 02:07:39 · 3 answers · asked by Anonymous

A space vehicle accelerates uniformly from 65m/s at t=0 to 162m/s at t=10.0s. How far did it move between t=2.0s and t=6.0s?

2007-09-21 02:01:59 · 4 answers · asked by Anonymous

2007-09-21 01:47:34 · 5 answers · asked by herschell h 1

Although nothing can travel faster than light (except light itself in the strange world of relativity) darkness is always there just before the lights come on... how?

2007-09-21 01:43:15 · 14 answers · asked by angelusbalthazar 1

A baseball is thrown with a velocity of 16.4 m/s at an angle of 30 degrees to the horizontal. Determine the horizontal displacement of the baseball.

Please show all the steps
Thanks!

2007-09-21 01:29:19 · 7 answers · asked by Sandra 2

what is precession motion ?what is importance of precession motion?give some other example of precession motion?

2007-09-21 00:59:28 · 5 answers · asked by Abhishek 1

2007-09-21 00:12:46 · 3 answers · asked by Moose On Da Loose 2

All I can grasp from what I have read is that as you get close to the speed of light time for you slows.

Any links to any sites or books or videos to explain it in a way I might understand would be very much appreciated.
I dont understand any of the thought experiments that Einstein did.
Its getting on my nerves now because I cant picture whats happening and I get most other things straight away.

2007-09-21 00:07:12 · 10 answers · asked by futuretopgun101 5

2007-09-20 21:08:26 · 6 answers · asked by paulo l 1

A bullet is fired through a board 11.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. The initial speed of the bullet is 350 m/s and it emerges from the other side of the board with a speed of 250 m/s.
(a) Find the acceleration of the bullet as it passes through the board.
_____m/s2
(b) Find the total time the bullet is in contact with the board.
_____s

2007-09-20 20:52:43 · 4 answers · asked by lttlstar7 1

A circular curve of highway is designed for traffic moving at 60 km/hr on a stormy day.What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?

2007-09-20 20:05:17 · 4 answers · asked by Anonymous

A bullet is fired through a board 12.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. The initial speed of the bullet is 450 m/s and it emerges from the other side of the board with a speed of 350 m/s.

1. Find the acceleration of the bullet as it passes through the board in ( m/s2 )

Find the total time the bullet is in contact with the board in (s ).

2007-09-20 19:28:45 · 2 answers · asked by smilenhope 1

I learned in Physics class that the force from a magnetic field on a charged particle is: F = q v x B. Where v and B are the velocity and magnetic field vectors, q is the charge and x means cross product. But, the velocity depends on my frame of reference. For instance I could be moving at the same velocity as the particle so that the particle appears to be stationary in my frame of reference. The force on the particle can't change just because my velocity changes. If it did then different observers would see something different. I'm obviously missing something here.

2007-09-20 18:58:22 · 4 answers · asked by Demiurge42 7

A person on a trampoline bounces straight upward with an initial speed of 4.6 m/s. What is the magnitude of the person's speed when she returns to her initial height?
what is the V final? (m/s)

2007-09-20 18:08:23 · 1 answers · asked by p0oh 1

just wondering..when mosquitos(or any other flying animal) fly, is it true that they are exerting a force downwards(by flapping their wings),thus by newton's third law there'll be a reaction force(lift) which pushes them up.

if that is true, why mosquitos dont exist on higher altitudes?is it because of the force needed to push them is too much?or is it something to deal with pressure difference??

please answer using physics concepts,thank you.

2007-09-20 17:35:13 · 5 answers · asked by edta 2

i know how to find the mass(overflow can) but i need to know how to find the volume so i can divide the too to get mass(d=m/v)do you just read the marking on the graduated cylinder AFTER you have found the mass of the object? please help, thanks in advance!

2007-09-20 17:34:07 · 3 answers · asked by lions48 2

A jet plane traveling horizontally at 150ms^-1 drops a rocket from a very tall height. The rocket immediately fires its engines after it is released from the plane, causing a 10.0ms^-2 (acceleration) in the X-DIRECTION (no x=vt), while falling under the influence of gravity in the y-direction. After the rocket has fallen 250 m, find:

a) the velocity in the y-direction
b) the velocity in the x-direction
c) the magnitute and direction of its velocity
d) how far it has traveled horizontally.

Neglect lift & drag forces.

THANKS!!! :)

(work is also appreciated)

2007-09-20 16:59:51 · 3 answers · asked by bluenecklace 2

between my finger and the LCD of my computer is infinity space but i can still reach the LCD screen And touch it
how is this possible

2007-09-20 16:55:33 · 6 answers · asked by Mehran.S 4

A professional race-car driver buys a car that can accelerate at 69.0 m/s2. The racer decides to race against another driver in a souped-up stock car. Both start from rest, but the stock-car driver leaves 1.0 s before the driver of the sports car. The stock car moves with a constant acceleration of 34.0 m/s2.

A)Find the time it takes the sports-car driver to overtake the stock-car driver.
B)Find the distance the two drivers travel before they are side by side.
C)Find the velocities of both cars at the instant they are side by side.
(Both Race Car and Stock Car.)
Thank you [:

2007-09-20 16:50:21 · 1 answers · asked by Anonymous