Physics - December 2006

2006-12-16 02:36:21 · 3 answers · asked by peace 1

It blows my mind trying to figure this 1 out...see if theres any brain child prodigy's among this yahoo crew

2006-12-16 02:29:37 · 18 answers · asked by michael_wheeler1 1

Penny wishes to take a picture of her image in a plane mirror. if the camera is 1.4 m in front of the mirror, at what distance should the camera lense be focused?

Does this have anything to do with 1/di + 1/do = 1/df ?

2006-12-16 02:23:09 · 3 answers · asked by HT2791 1

mgh = .5mv^2
if L = .66 m, and the pendulum is left at an angle of 12 degrees to the vertical, how do I DERIVE the height? What's the physics behind it?

2006-12-16 02:12:19 · 5 answers · asked by Ankit G 1

2 + 2 = 5 how

2006-12-16 01:54:39 · 11 answers · asked by ashutosh 1

The best answer I've had is if you 'burn a log, weigh the ash and subtract that from the weight of the unburnt log'. Seems a bit unpredictable.
Can anything have negative weight? If air has a weight of Zero, then anything lighter than air must have a negative weight? And since Butane gas is heavier than air, does it then have a weight?
Any related information on this topic would be appreciated. Thanks everyone.

2006-12-16 00:57:35 · 7 answers · asked by ryan b 2

in any heavenly body what is that constitutes the gravitational force,is it the soil,crust or the molten core?if so can gravity be achieved in outer space by taking the required stuff outside into the space?

2006-12-16 00:23:53 · 11 answers · asked by pruthesh s 1

2006-12-16 00:04:50 · 6 answers · asked by Ads 1

2006-12-15 18:59:09 · 7 answers · asked by Lai Yu Zeng 4

2006-12-15 18:58:10 · 3 answers · asked by Lai Yu Zeng 4

2006-12-15 18:57:22 · 5 answers · asked by Lai Yu Zeng 4

Would you please explain each of them for me?
is (IR) a kind of Laser?

2006-12-15 18:46:02 · 4 answers · asked by PINAR W 1

I've heard that (IR) is dangerous for eyes!

2006-12-15 18:24:45 · 4 answers · asked by PINAR W 1

Please explain me the proper mechanism in brief.

2006-12-15 17:45:32 · 5 answers · asked by MR.CURIOUS 1

If an unstoppable force collided with an unmovable object, what would happen?

2006-12-15 16:04:45 · 30 answers · asked by xrodak 2

Vector A has components
Ax = -5.1; Ay = 5.3; Az = 2.3;
while vector B has components
Bx = 7.3; By = -7; Bz = 4.9.
What is the angle thetaAB between these vectors?
(Answer between 0 and 180 degrees.) Answer in units of degrees.

2006-12-15 15:30:38 · 3 answers · asked by Anonymous

How does gravity work the same for a human to an ant, or a car to a pop can. you would think the gravitational pull would have to be different for bigger or smaller objects.

2006-12-15 15:29:00 · 14 answers · asked by Anonymous

2006-12-15 15:16:55 · 4 answers · asked by Anonymous

A 1kg object is released 500 km above earth. What is its impact speed as it hits the ground, ignoring air resistance?

What would the impact speed be if the earth was flat?

2006-12-15 15:06:37 · 2 answers · asked by owl_finch 1

2006-12-15 15:00:31 · 16 answers · asked by Anonymous

Light looks different to me at these times even though the sun is on the horizion in a similar position. Since the earth is spinning toward the sun at sunrise and away at sunset, does this effect the color we perceive? Or is there another explanation?

2006-12-15 14:59:54 · 5 answers · asked by Anonymous

A robot arm that controls the position of a
video camera in an automated surveillance
system is manipulated by a servo motor that
exerts a force on a push-rod.
The force is given by
F(x) = x^2 ;
where x is the position of the end of the push-
rod.
If the push-rod moves from x1 = 0 m to
x2 = 12 m, how much work did the servo
motor do? Answer in units of J.

2006-12-15 14:56:59 · 2 answers · asked by Anonymous

Science > Alternative > Paranormal

Shouldn't this category be moved somewhere else?

2006-12-15 14:51:38 · 6 answers · asked by robbob 5

2006-12-15 14:24:33 · 14 answers · asked by whiterose1947 2

I'm checking out some wilderness guides. I know the theory behind banking a fire--that you cover the coals in ashes, and this keeps them alive until morning. How long can you reasonably expect them to stay alive? Does the size of the coal matter before you bank it? How much ash should you put on? Any other advice?

2006-12-15 14:07:31 · 2 answers · asked by Singinganddancing 6

2006-12-15 13:26:16 · 6 answers · asked by Nick K 1

In the 1950's, an experimental train that had a mass of 15,400 kg was powered across a level track by a jet engine that produced a thrust of 568,000 N for a distance of 459 m. What's the change in kinetic energy (J)? What's the final kinetic energy if the train started from rest (J)? What's the final speed of the train assuming no friction (m/s)?

2006-12-15 13:20:50 · 3 answers · asked by Derrick Z 1

A car wants to travel 2 miles, with an average speed of 60 miles per hour. For the 1st mile the car averages 30 mile per hour, how fast must the car on average travel for the 2nd miles to meet this average of 60 miles per hour? Please show all work and how you came up with it!

2006-12-15 12:51:55 · 7 answers · asked by Dan C 1

Pam has a mass of 35.2 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 19.4 m and Pam acquires a speed of 63.4 m/s. What is the magnitude of the force in N?

2006-12-15 12:42:16 · 6 answers · asked by Derrick Z 1

2006-12-15 12:38:35 · 4 answers · asked by einstein_physics_1989 1