Physics - December 2007

I know that there are smaller things than atoms!!!

...but its a concept of indivisible space. Is there an equivalent in time?

If not why was/is space considered to be indivisible at the smallest point and time not?

2007-12-11 01:45:05 · 4 answers · asked by semiconductor 1

2007-12-11 01:36:01 · 5 answers · asked by Dustin P 1

I am assuming Kinetic friction or force is equal to product of the product of the friction coefficient and mg. ( Ff = coefficient x mg)

and that this force is somehow equal to ma thus giving us
a = coefficient x g

2007-12-11 01:33:44 · 8 answers · asked by Anonymous

When putting two small magnets side by side they move towards eachother. Where does that energy come from? Remeber that the magnetic fields do not perfrom the work. Thanks

2007-12-11 01:29:35 · 4 answers · asked by Brian 6

A light spring of force constant k = 160 N/m rests vertically on the bottom of a large beaker of water (Fig. P9.34a). A 5.00-kg block of wood (density = 650 kg/m3) is connected to the spring, and the block–spring system is allowed to come to static equilibrium. What is the elongation ΔL of the spring?

2007-12-11 01:28:32 · 3 answers · asked by chickenboy 1

How do infared waves work and what are some examples of things that use them.

2007-12-11 01:24:43 · 1 answers · asked by Dan The Man 3

height of 0.70 m
pulled back distance of 0.10 m
mass of 7 g
velocity of .21 m/s

2007-12-11 01:01:16 · 2 answers · asked by Nomo 2

2007-12-11 00:55:08 · 1 answers · asked by aryan e 1

the wall light is 1500 candela so the illuminance directly below the light would be 1500/5 squared = 60
what would be the illuminance 3 metres on the ground away from the wall

2007-12-11 00:18:55 · 1 answers · asked by Paul 2

is 1200 kg, its centre of mass is 650mm above the road surface and its wheel spacing (across the car) is 1.6m. Calculate the total vertical force exerted by the wheels on each side of the car, assuming an equal distribution between front and rear axles.

Could you show your working as a i cant calculate the correct answer

2007-12-11 00:12:15 · 1 answers · asked by ian m 2

what will happen if we connect sealed lead acid battery to an alternating current directly ?( I didn't recharge my emergency light for 4 months or so,I want to know how to remove the sulphate formation over the electrodes.

2007-12-11 00:01:53 · 5 answers · asked by Anonymous

its about waves.. can u please enumerate the types of waves?
and differentiate each type of waves.. Ope u can help me ^__^ tnx.

2007-12-10 23:24:13 · 3 answers · asked by Tiffy4391 1

Is it clock wise or anticlockwise?

I am in a warm room at the South Pole and I have a container full of water fixed to the Earth. I see that the water is prefectly still. Then I let out the water. What way will I see the water spin as it is draining? Why this direction? Why will I see it spin?

2007-12-10 23:19:26 · 2 answers · asked by Gotcha 3

1. While an object is moving at a constant 20 m/s, a 5 N force pushes the object to the left. At the same time, a 5 N force is pushing the object to the right. What will the object's velocity be after 10 seconds?
2. A bowling ball has a mass of 6 kilograms. A tennis ball has a mass of 0.06 kg. How much inertia does the bowling ball have compared to the tennis ball?
3. A rider and motorcycle with a combined mass of 250 kg are driving down the road at a constant speed of 55 mph. The motorcycle’s engine is producing a force of 1,700 newtons
between the tires and the road.
a. Find the weight of the motorcycle and rider in newtons.
b. Find the normal force of the road on the motorcycle and rider.
c. Find the frictional force of the road and air on the motorcycle and rider.
4. What is the net force on the refrigerator shown to the right?
5. Jane has a mass of 40 kg. She pushes on a 50-kg rock with a force of 100 N. What force does the rock exert on Jane?

THANKS!!!!!!

2007-12-10 22:42:32 · 3 answers · asked by Anonymous

What is the maximum voltage that can be applied to a 2.7 k resistor rated at ¼ watt?

2007-12-10 20:16:29 · 4 answers · asked by Anonymous

can u guys help me please.

How much would you have to raise the temperature of a copper wire (originally at 20C) to increase its resistance by 20 percent?

A length of aluminum wire is connected to a precision 10.00 V power supply and a current of 0.4212 A is precisely measured at 20C. The wire is placed in a new environment of unknown temperature where the measured current is 0.3618 A. What is the unknown temperature?


What is the maximum power consumption of a 9.0 V portable cassette player that draws a maximum current of 350 mA of current?

2007-12-10 20:13:54 · 1 answers · asked by Anonymous

http://www.math.gatech.edu/~berglund/GR.html

Please click on above source and answer the following questions please.

Why one always thinks of an objects sunken into space (curvature of space) in horizontal plan? Position of earth (or celestial bodies) in its orbit w.r.t to sun is always presented in horizontal plane. WHY? It could be in vertical or inclined plane wrt sun??????
Are we going towards past along with time dimension when earth changes its position for its seasons in its orbit? If it revolves like a spiral then time dimension should be spiral and what are factors that make it spiral?
What is substantial wake effects of these lines after straightening up on earth’s velocity in its orbit and how much is the on coming resistance due to these line that have to depressed?
Similarly can I see my future fiancé (I don’t know who she is) and my past with a powerful telescope (ideal) from galactic centre or any other point far from our galaxy?

2007-12-10 20:05:48 · 3 answers · asked by ? 3

2007-12-10 18:32:35 · 1 answers · asked by Amir A 1

2007-12-10 17:59:09 · 2 answers · asked by Anonymous

If they can collide, what's the resulting effect?

2007-12-10 17:54:20 · 5 answers · asked by alexpheno 1

2007-12-10 16:08:37 · 19 answers · asked by Anonymous

2007-12-10 16:02:06 · 2 answers · asked by Anonymous

well, here goes.

I think that Light < Vision because if We can see light traveling, than we must be able to see at a greater speed than the speed of light. i mean think about it for a seconds.

We see a lit up room, and its bright and all, but with out vision, would it still be bright? Its really simple actually, i dont think i can make it anymore easier to explaine

please if you think im onto something, post your thoughts.

If i messed up on some sort of Law than post your thoughts anyways

2007-12-10 15:51:13 · 3 answers · asked by Anonymous

physics.

2007-12-10 15:21:16 · 5 answers · asked by Ohsnaps08 1

Expectations by automobile buyers that prices on next year's models will increase substantially?

2007-12-10 15:17:41 · 1 answers · asked by Anonymous

2007-12-10 15:16:13 · 13 answers · asked by Anonymous

Ok, so to clarify things, please say if I'm right or wrong.

Mass: Proton > Neutron > Electron ?
Volume: Proton > Neutron > Electron?
Charge: Proton = +, Neutron = 0 and Electron = -1

Ok, thx.

2007-12-10 14:51:26 · 4 answers · asked by homelessanta 2

Is this suggesting that if we get rid of butterflies, there will be no tornadoes?

2007-12-10 14:48:03 · 4 answers · asked by Anonymous

It's weird, we're always taught that positive and negative attract, protons and electrons attract, but nobody ever says why they attract. Similarly, why are objects attracted gravitationally?

2007-12-10 14:21:35 · 8 answers · asked by Anonymous

This is based on gravity and if we want to find newtons do we first convert grams to kg and than times by 9.8 to get the Newtons?

2007-12-10 14:19:35 · 4 answers · asked by Anonymous