Physics - February 2007

I'd put my money on the horses all the way up to at least a 600 h.p. engine. I'm relying on intuition. Has anyone seen evidence of a contest like this? Also, I'm basing horse power on the definition that 1 h.p. equals the amount of work that 1 dray horse can do in an hour. So in the question, assume we're talking about a dray (work) horse team.

2007-02-21 08:11:11 · 5 answers · asked by TzodEarf 5

If a truck (mass=1750kg) is pulling a trailer (mass=250kg) and the combination is accelerating at 3 meters per second, what is the tension between the truck and trailer? (Rolling friction is assumed to be zero and the road is level.)

2007-02-21 07:58:19 · 2 answers · asked by GSU 1

If a 10kg mass is dropped from a height of 2 meters (free fall for this distance) and then rapidly decelerates to a stop in just 1cm distance. What is the average deceleration force on the mass?

2007-02-21 07:42:12 · 2 answers · asked by GSU 1

What is the magnitude of the gravitational force between the Earth and the Moon?

Earth Mass, MT=5.98·E 24 kg
Earth Radius, RT= 6.38·E 6 m
Moon Mass, ML=7.35·E 22 kg
Moon Radius, 1.74·E 6 m
Distance between Earth & Moon, d=384000 km=3.85·E 8 m

2007-02-21 07:28:41 · 3 answers · asked by GSU 1

If 100 meters of telephone wire is suspended between two poles separated by 95 meters and a pelican (mass=5kg) lands midway along the wire, what is the tension in the wire due to the bird?

2007-02-21 07:19:24 · 1 answers · asked by GSU 1

I keep hearing about how mass creates gravity but what if gravity itself had mass? Or, what if dark matter IS gravity?

-not a high level physist but i DO think about these things!

2007-02-21 06:37:29 · 10 answers · asked by kestrel374 2

if you can give me more conversions will be great, like power(neoton), length(meter), electricity(watt) and more as you can, please!!

2007-02-21 06:27:59 · 6 answers · asked by steve 2

and how is it called a law ??is there any proof for it??
but somehow i surely believe its true.

2007-02-21 06:26:10 · 8 answers · asked by anshuman p 2

need it by end of today please an thank you

2007-02-21 06:23:57 · 9 answers · asked by Anonymous

If the car goes faster, does this quantity get bigger or smaller

the equation wavespeed = frequency x wavelength might help

2007-02-21 06:21:10 · 3 answers · asked by Anonymous

given the previous information that the speed of sound is 330m/s and the speed of light is 3x10 (little)8 m/s and the previous question tells us to work out the frequency using 100mm as wavelength using the formula wavespeed = frequency x wavelength

2007-02-21 06:16:48 · 7 answers · asked by Anonymous

Determine the wavelength of a standing wave when the string is 1.5meters long

2007-02-21 06:02:09 · 2 answers · asked by Anonymous

What happens to all the energy that is absorbed within a blackhole?
If it is converted all to light, where is all that energy being transfered to. Shouldnt space be heated up or something

2007-02-21 06:00:33 · 14 answers · asked by Anonymous

It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). What is the angular speed of the earth?

Assume the earth is spherical. Relative to someone on the rotation axis, what is the linear speed of an object on the surface if the radius vector from the center of the earth to the object makes an angle of 51.0° with the axis of rotation. The radius of the earth is 6.37×103 km.

What is the acceleration of the object on the surface of the earth in the previous problem?

2007-02-21 05:44:56 · 3 answers · asked by Anonymous

what would life be like if the speed of sound and the speed of light were the other way round. how could hear into the future, trippy

2007-02-21 05:40:33 · 10 answers · asked by Anonymous

2007-02-21 05:03:53 · 3 answers · asked by mr_masoud_m 1

2007-02-21 04:58:09 · 7 answers · asked by ag 1

if absorbtion spectrum is the spectrum that is resulted form the absorption of a particular wavelength of the incident light then, immediately after receiving the energy the atoms will tend to release the absorbed enegy so it will yeild an emmision spectrum, so how to distinguish between the both spectra formed???

2007-02-21 04:48:37 · 4 answers · asked by Anonymous

can i know the phenomenon by which we convert
dc to ac or
ac to dc ?
(DC:Direct current, AC:alternate current )
thank you for concern...

2007-02-21 04:47:54 · 7 answers · asked by Zeux 1

physics

2007-02-21 04:32:59 · 4 answers · asked by munni 1

2007-02-21 04:14:03 · 9 answers · asked by Anonymous

A sealed cubical container 28.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 15.0°C. Find the force exerted by the gas on one of the walls of the container.
N

2007-02-21 04:03:03 · 1 answers · asked by Kelly C 1

your traveling when you measure the speed, for instance if i was in a ship traveling 100,000 miles per second, would light still measure 186,000 miles per second even though i am traveling that fast. and i know its not possible to travel that fast this is a thearetical question

2007-02-21 04:01:16 · 6 answers · asked by sean R 1

light is the fastest "thing" that we know of. How can a person measure how fast it goes? How can the distance travelled be observed?

2007-02-21 03:38:35 · 7 answers · asked by Michael n 2

Highways are banked at an angle q for a design speed at which friction is not required to steer the car around the curve. If the design speed is 59 mph, and the banking angle is 16 degrees, what is the radius of the curve in meters?

2007-02-21 03:37:50 · 1 answers · asked by Anonymous

A steel ball of mass 1.41 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane.The circle has a radius of 1.58 m. When it is at the bottom of the circle, the ball has a speed of 12.3 m/s. Calculate the magnitude of the tension in the cable when the mass is at the bottom of the circle.

2007-02-21 03:36:32 · 1 answers · asked by Anonymous

A bicycle is moving at a speed v = 3.56 m/s. If the radius of the front wheel is 0.450 m, how long does it take for that wheel to make a complete revolution?

2007-02-21 03:34:58 · 3 answers · asked by Anonymous

2007-02-21 03:32:51 · 1 answers · asked by Anonymous

2007-02-21 03:31:32 · 2 answers · asked by Anonymous

For instance, if a person were to shine a flashlight away from him, his friend would go towards the light, and the person shining the light would stand still while pointing the light in the same direction, the light would be moving away from you, and towards your friend.

I KNOW I HAVE MAYBE SAID SOME THINGS THAT ARE INCORRECT, BUT I AM JUST TRYING TO UNDERSTAND THE CONCEPT.

2007-02-21 03:04:53 · 1 answers · asked by Michael n 2