Physics - March 2007

What is the difference? In science that is...

2007-03-15 07:28:44 · 9 answers · asked by -=P=- 1

If it affects light, wouldn't it be faster and stronger than light?

2007-03-15 07:24:28 · 9 answers · asked by onelittledoc 1

2007-03-15 07:18:36 · 3 answers · asked by Brooke S 1

2007-03-15 06:56:43 · 4 answers · asked by Anonymous

Your boss at the Cut-Rate Cuckoo Clock Company asks you what would happen to the frequency of the angular SHM of the balance wheel if it had the same density and the same coil spring (thus the same torsion constant), but all the balance wheel dimensions were made one-third as great to save material.

1a.]By what factor would the frequency change?

1b.]Would the frequency increase or decrease by the factor found in part (1a)?

2a.] By what factor would the torsion constant need to be changed to make the smaller balance wheel oscillate at the original frequency?

2b.]Would the torsion constant need to be increased or decreased by the factor found in part (2a)?


Note: I realize that this question was posted and someone has answered, but it is not the correct solution.
For comparison, the link is :
http://answers.yahoo.com/question/index;_ylt=AgtVN2FFPxkM4fGBUVxza2cjzKIX?qid=20070313104823AA3BdER


Help is much appreciated :]

2007-03-15 06:56:37 · 2 answers · asked by squishy 1

Is anti matter considered a physical, nonphysical, anti physical or other substance?

2007-03-15 06:42:04 · 4 answers · asked by MADBOY 1

just to know the situation they are used as per physics

2007-03-15 06:40:38 · 4 answers · asked by NIDHI 1

An elevator weighing 2.00 x 10^5 N is supported by a steel cable. What is the tension in the cable when the elevator is accelerated upward at a rate of 3.00 m/s^2?

assume g=9.81 m/s^2

How do I write out this equation correctly? Thanks

2007-03-15 06:32:10 · 2 answers · asked by Anonymous

Suzanne has climbed a tree to a height of 6.20 m. You throw a ball vertically up to her and it is traveling at 5.00 m/s when it reaches her. What was the speed of the ball when it left your hand if you released it at a height of 1.10 m?

Thanks for any help!

2007-03-15 06:22:09 · 4 answers · asked by Anonymous

Why does the resistance of a metallic conductor increases with the length of a wire?

2007-03-15 06:20:03 · 3 answers · asked by Anonymous

2007-03-15 06:10:01 · 4 answers · asked by daw2017 1

If the plates of the capacitor are moved further apart by means of insulating handles

(a) The charge on the capacitor increases.
(b) The voltage across the plates increases.
(c) The capacitance increases.
(d) The electrostatic energy stored in the capacitor decreases.

2007-03-15 05:45:29 · 5 answers · asked by MOKSHA 3

i.e. Mechanics, waves, etc.

2007-03-15 05:38:01 · 5 answers · asked by Eltromeche E 1

The planet jupiter is about 300 times as massive as earth but an object on it's surface would weigh only 2.5 times as much as it would on earth. Can you come up with an explanation?

2007-03-15 05:24:07 · 8 answers · asked by santista 2

You are sitting on the outer edge of a merry go round and you move in towards the center. What would happen to your rotational speed?

2007-03-15 05:22:37 · 8 answers · asked by santista 2

Consider a ring and a coin that both have a mass of 6.0 grams rolling down an inclined plane, which would get to the bottom first??

2007-03-15 05:21:33 · 7 answers · asked by santista 2

explain

2007-03-15 05:20:31 · 3 answers · asked by santista 2

when designing a building in japa, it must be allowed to sway during an earthquake so it won't collapse. How would you design the building so it wouldn't topple either? expain ur design

2007-03-15 05:19:41 · 1 answers · asked by santista 2

Calculate the magnitude and direction of the electric field at the center of a square 55.0 cm on a side if one corner is occupied by a +31.5 µC charge and the other three are occupied by -23.1 µC

2007-03-15 05:01:31 · 2 answers · asked by tjmierzwa 2

2007-03-15 04:41:39 · 6 answers · asked by mmkba 1

a baseball thrown at an angle of 60degrees above the horizontal strikes a building that is 18m away at at point that is 8m above the point from which it is thrown. ignore air resistance
a) find the magnitude of the initial velocity of the baseball( the velocity at which the baseball is thrown)
b) find the magnitude and direction of the velocity of the baseball just before it strikes the building.
c) draw x-t, y-t, Vx-t, and Vy-t graphs of the motion.

2007-03-15 04:38:00 · 2 answers · asked by smiley25 2

2007-03-15 04:30:28 · 7 answers · asked by priya 1

The temperatures of three different liquids are maintained at 15, 20 and 25 degree celsius respectively.

When equal masses of the first two liquids are mixed, the final temperature is 18 degree celsius.

When eual masses of the last two liquids are mixed, the final temperature is 24 degress celcius. What temperature will be achieved by mixing equal masses of the first and last liquid?

2007-03-15 04:29:51 · 3 answers · asked by Chocolate Strawberries. 4

A physics question asks you to draw this scenario:
A 150N box is placed on an incline AB which makes a 30 degree angle with the floor AC. The vector OE represents the weight of the box. Show the component OE which acts to pull the box down the incline and the component OD which tends to break the incline.
Then answer the following questions:
A) what is the magnitude of OF found graphically?
B) What is the magnitude of OD found graphically?
C) What is the computed magnitude of the force OF?
D) What is the computed magnitude of the force OD?
Please explain how u got the answers and any formulas u used. Thank you.

2007-03-15 04:21:24 · 1 answers · asked by Fatima 1

A physics problem is as follows:
Construct the diagram for the following problem on your paper, then answer the following questions:
OR is a vector representing a force of 20N acting on a point O at an angle of 45 degrees south of east. By construction resolve OR into its horizontal and vertical components, OH and OV.
A. what is the value of angle HOR formed by the force vector OR and its horizontal component OH?
B. what is the magnitude of OH found graphically?
C. what is the calculated magnitude of OH?
D. what is the magnitude of OV?
Please explain how u got the answers and what formulas u used. Thank you.

2007-03-15 04:16:47 · 2 answers · asked by Fatima 1

2007-03-15 04:07:48 · 2 answers · asked by Anonymous

A sailboat is sailing due east at 8.20 mph. The wind appears to blow from the southwest at 10.9 mph.
What is the true wind speed?

What is the true wind speed if the wind appears to blow from the northeast at 10.9 mph?

2007-03-15 03:51:51 · 2 answers · asked by RelientKayers 4

I am trying to create a device that can launch a ball +/-0.5m away from a line 4m away from the device. I have already got the blueprint ready and the device I created is a mini launcher, something like: _
____________ | |
|Ball is here-----|-------| |
|___________| |_ |

Basically, I need to launch a ball.

Explaining the blueprint:
The thing that holds the ball is a container.
The dotted line is a toilet roll with tissue paper.
The thing on the right side of the toilet roll is a handle, which will supposedly be tied with 2 rubberbands (making a '+' sign) and when I pull it backwards and let go, the toilet roll will shoot out the ball and the launching handle will not be able to go through because of its size so the device works very well.

Now coming to the question:
WHAT THEORY OF SCIENCE DOES THE SHOOTING OF THE BALL RELATE TO?

(1st appropriate one WITH sources gets 10 pts)

2007-03-15 03:46:53 · 3 answers · asked by Az 3

i mean the strong ones, like neodymium, not homemade magnitized needles/nails.

2007-03-15 03:28:04 · 4 answers · asked by trampazoid 3

2007-03-15 02:34:02 · 3 answers · asked by harishchandra_09 1