Physics - May 2007

2007-05-16 15:49:35 · 4 answers · asked by Anonymous

curious

2007-05-16 15:31:47 · 3 answers · asked by chihoons 1

A uniform electric field exists in the region between two oppositely charged parallel plates 1.70cm apart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval 1.57×10−6s .Use 1.60×10−19C for the magnitude of the charge on an electron and 1.67×10−27 KG for the mass of a proton.

2007-05-16 15:23:47 · 1 answers · asked by RhondaJo 2

2007-05-16 15:14:28 · 2 answers · asked by Anonymous

large shadow cast by the contact point where the thin legs touch the water surface. Then around the shadow is a bright ring. what accounts for this?

2007-05-16 14:59:44 · 1 answers · asked by Anonymous

Two apples of the exact same mass AND exact same shape grew on the same tree (see details)?

Apple number one grew 5 feet from the ground and apple number two grew 4 feet from the ground. Assuming they are on two different branches, there are no branches or leaves, or anything between the apples and the ground. Nothing or no one lifted the apples, they just grew there and they both have the same mass AND shape, in fact they are identical.

Which apple falls first?

2007-05-16 14:52:49 · 11 answers · asked by Yahoo! 5

...straw containing liquid, even if only one side of the straw is blocked and the other side is open, the liquid doesn't come out of the open end? for example when you're drinking with a straw it's filled(with water for eg) and you block only one open end of the straw even if the other end is open the liquid doesn't fall/come out.
What is the reson for this?

2007-05-16 14:50:15 · 8 answers · asked by ♫ Melody♫ 3

photographed

2007-05-16 14:08:04 · 1 answers · asked by Anonymous

2007-05-16 14:05:50 · 2 answers · asked by Anonymous

2007-05-16 14:03:36 · 4 answers · asked by Anonymous

What are the action and reaction forces acting when someone jumps from a canoe to a riverbank?? Explain why the jumper often falls into the rive??????

2007-05-16 14:03:26 · 2 answers · asked by abercombie123 1

2)what type of fuel does the system convert to heat?
3) which of the three types of heat transfer does yoyr heater use to heat the house?
4) if your heater heats 100g of water from 21 degrees C to 30 degrees C, how much heat in joules does the water absorb?
5) explain why your heater increases the total entropy in the universe.

2007-05-16 13:19:55 · 1 answers · asked by Anonymous

2007-05-16 12:26:30 · 5 answers · asked by tallthetime 1

2007-05-16 12:11:26 · 4 answers · asked by kolby a 1

A friend tells you that a rowboat is propelled forward by the force of its oars against the water. First, explain whether the statement is correct, and then identify the action and reaction forces.

2007-05-16 11:37:50 · 3 answers · asked by Ryoma Echizen 3

And would he try to milk his idea?

2007-05-16 11:11:45 · 13 answers · asked by Anonymous

im interested in building my own radio transmitter. can anyone tell me what exactly id need and is it really hard to do?

2007-05-16 11:11:15 · 6 answers · asked by Anonymous

have luster
are able to be shaped
remain solid at 25 degrees C
conduct heat

2007-05-16 10:55:58 · 3 answers · asked by L1l_ H3aRtz 1

this question is from physics

2007-05-16 10:14:50 · 3 answers · asked by Anonymous

The air inside the air line is always the atmospher pressure at the ground What is the difference in air pressure in side and out side the air line at 15cm

2007-05-16 09:50:42 · 2 answers · asked by riazshahid67 1

I read a definition of perpetual motion from 1910, which does not read like anything I have seen from recently, I am already familiar with the definition that "It's impossible" and "This ain't it."

2007-05-16 09:25:27 · 10 answers · asked by louhinshaw 1

convert a sound intensity of 36 decibels to an equivalent intensity in watts/m ^2?

please explain ste by step how u got it. especially how to take an anti log of a number with the calculator.

2007-05-16 09:19:57 · 4 answers · asked by Alexandria 1

Can someone help me out here and show work please:?

1. Consider the block on a surface below. The coefficient of friction (µ) is 0.20. Block is 20 kg

-------------- F
| Block | --------------------->
--------------

If a 10. N force is applied to the block, what is its acceleration?

How fast will the block be moving if the force is applied for 5.0 s?

How far will the block have traveled during this 5.0 s period?

2. A 70.0 kg box is pulled across a frictionless surface by a 300. N force at an angle of 30° to the horizontal.

What is the normal force on the box?

What is the acceleration of the box in the x-direction if there is no friction?

What coefficient of friction would be required if the box were to move at constant speed?

2007-05-16 08:49:48 · 1 answers · asked by Anonymous

Cannon fired a ball of mass M = 1 kg with muzzle velocity
v = 500 m/s in due west direction on the equator.
Kinetic energy of the ball is K = mv²/2 = 125kJ.
This energy came from burning 1 kg of gunpowder.

But if we look at this from the North pole, the picture is different:
Initial velocity of the ball is equal to speed of earth rotation:
v = 500 m/s. Final velocity is 500-500 = 0.
Thus cannon ball lost all its initial kinetic energy 125kJ,
and the gunpowder is now gone too.

2007-05-16 08:47:14 · 8 answers · asked by Alexander 6

i've seen some video's on youtube and it look's a bit fishy. go their and type in hutchinson effect and tell me what you think.

2007-05-16 08:40:51 · 5 answers · asked by SHELLTOE BISCUITS 3

Which ones of these listed are examples of kinetic energy?

1. A reservoir of water behind a hydroelectric dam has more _____ energy.

2. A tree that is kept from toppling over by leaning on another tree has more _____ energy.

3. A marble rolling along an level surface has more _____ energy.

4. A car parked at the top of a hill has more _____ energy.

5. A space ship moving through space far from any planet has more _____ energy.

6. A tightly wound spring has more _____ energy.

7. A bullet fired in space has more _____ energy.

2007-05-16 08:22:22 · 5 answers · asked by JaNaLiEn 2

2007-05-16 07:54:49 · 8 answers · asked by Alexander 6

2007-05-16 07:42:39 · 9 answers · asked by Anonymous

explain?

2007-05-16 07:04:02 · 10 answers · asked by Anonymous

I've noticed on the road that vehicles have fuzzy shadows on the sides perpendicular to the observing direction and completely unrelated to the angle of the vehicle relative to the sun, which is obscured anyway.

2007-05-16 06:52:32 · 2 answers · asked by DBaron 2