Physics - October 2006

2006-10-08 06:43:33 · 35 answers · asked by Ro a 1

Phil and Linda decide to continue their game of catch by the lakeside. Phil stays on land, and Linda stands in a rowboat. When Linda throws the softball, to Phil, the rowboat moves away from the shore. THis can be most easily explained by:
a Newton's first law
b Newton's second law
c Newton's third law
d None of these

2006-10-08 06:38:02 · 6 answers · asked by sportsnut 1

Ok according to Newtons Third law, for every action their is a opposite and equal reaction. Gravity pulls us down so according to Newton there must be a force that pulls us up, these forces have to have equal force. What 'If' we could create a force that is the opposite of gravity additional to already exsisiting force working against gravity. The action would no longer be equal to the reaction. So gravity wouldnt equal its opposite force. Newton says that all forces have to be equal but he was thinkng about natural forces, what 'If' we could create a artifcial force.

2006-10-08 06:32:15 · 13 answers · asked by Mark 2

.... assume that the gravity doesn't crush me. And is there any situation where will be able to see myself and can shake my own hand. No mirror jokes.

2006-10-08 06:16:35 · 6 answers · asked by MrSandman 5

2006-10-08 06:08:15 · 6 answers · asked by gasp 4

Does modern science accepts this fact that sun is revolving?

2006-10-08 06:07:46 · 5 answers · asked by syedyaseen007 2

2006-10-08 06:07:33 · 4 answers · asked by c90 4

The Big Bang would have thrown debris in every direction. Is the debris (planets, stars, etc) that is furtherest away travelling at a much faster speed?

If so, then why does the density of the matter in the universe remain uniform throughout?

Isn't it like a long distance race? Initially the athletes keep pace, prefering to cluster together, to conserve their energy (high matter density). But only when the finishing line is in sight, do the best runners break free from the rest of the group. The "density" of athletes is normally lower towards the end of the race as the gap between the athletes increases. Doesn't the same apply in cosmology? Or is space a factor here?

2006-10-08 06:06:22 · 3 answers · asked by MrSandman 5

How fast is it moving at the instant it reaches the top of its trajectory? Suppose instead that it were fired upaward at 45 degrees. What would be its speed at the top of its trajectory

2006-10-08 05:58:59 · 4 answers · asked by Melissa 2

What is the value of g at the distance of twice the Earth's radius?

2006-10-08 05:54:03 · 3 answers · asked by Melissa 2

I am planning on doing a powerpoint teaching. I have to teach of of the 3 topics of Momentum through 20 slides not a project but same work and effort.
1.Linear Momentum and Impulse
2.Conservation of linear momentum
3. Elastic and Inelastic collisions

Which topic do you think would be easier? Im thinking elastic and inelastic collisions with billards slides and everything? what do you think and why? any websites to help me?


Any sources such as books for this topic or websites

2006-10-08 05:51:32 · 2 answers · asked by avalentin911 2

2006-10-08 05:50:06 · 3 answers · asked by Viktor Krum 1

What is the weight of the Earth in the gravitational field of Larry

2006-10-08 05:48:30 · 3 answers · asked by Melissa 2

2006-10-08 05:44:03 · 3 answers · asked by Anonymous

2006-10-08 05:42:08 · 5 answers · asked by Anonymous

2006-10-08 05:30:07 · 5 answers · asked by trickster 1

how would you find the initial velocity of an projectile, if you are only given the angle, the height, and the width?

2006-10-08 05:27:44 · 4 answers · asked by Anonymous

Is there any projection difference between a pistol and a revolver? How the name was coined as a revolver?

2006-10-08 04:57:13 · 6 answers · asked by venkat_adv9 1

The velocity of light relative to the sun? and relative to the earth?

2006-10-08 04:49:09 · 3 answers · asked by goring 6

1.) A horizontal and a vertical force combine to give a resultant force of 10 N acts in a direction 40 degress above the horizontal. Find the magnitude of the horizontal and vertical force.

ans: Fh=7.7 N Fv= 6.4 N

2.) A sailboat cannot sail directly toward the wind but must "tack" back and forth at a certain angle with respect to the direction from which the wind is blowing. Which sailboat has the greater component of velocity to windward, the Alpha whose velocity is 5.0 km/h at and angle of 40 degrees away from the wind, or the Beta, whose velocity is 6.0 km/h at an angle of 50 degrees away from the wind?

ans:alpha= 3.83 km/h beta= 3.86 km/h

like how do u get these problems b/c i worked all night tryin to figure these out.

2006-10-08 04:43:12 · 3 answers · asked by micheal j 1

The radiation curve of the sun shows that the brightest light from the sun is a yellow-green. So then why do we see the sun as whitish instead of yellow-green?

2006-10-08 04:15:55 · 4 answers · asked by Anonymous

How many megatons? How many gigatons? H-bombs or new ones?

http://video.google.fr/videoplay?docid=2552156377245852199&q=Nuclear++Atomic+Bomb+Footage

2006-10-08 04:13:03 · 2 answers · asked by Axel ∇ 5

Note the earth moves in space relative to galactic center of mass than does it experience mass changes?

2006-10-08 04:10:41 · 1 answers · asked by goring 6

a ball player hits home run, and clears a wall 21 m high located 130 m from home plate. Hit at an angle of 35 degrees and is hit at a height of 1 m from the ground.

a) What is the initial speed of the ball?

I tried using the formula sq((R*g)/sin2(theta)), but I come out with an answer of 36.8, while the book says that the correct answer is 41.7 m/s. Am I using the wrong formula, or is the concept wrong?
Thanks!

2006-10-08 04:03:56 · 2 answers · asked by Anonymous

A 4.00-kg object is attached to a vertical rod by two strings. The object rotates in a horizontal circle at constant speed 6.00 m/s. What is the tension in the upper string and the lower string.

2006-10-08 03:51:27 · 2 answers · asked by Anonymous

Isnt time proportional to density of space matter content and inversely proportional to space pressure per unit distance ^2 ?

2006-10-08 03:47:09 · 1 answers · asked by goring 6

A crate of eggs is located in the middle of the flatbed of a pickup truck as the truck negotiates an unbanked curve in the road. The curve may be regarded as an arc of a circle of radius 35.0 m. If the coefficient of static friction between crate and truck is 0.600, how fast can the truck be moving without the crate sliding?.

2006-10-08 03:40:57 · 2 answers · asked by Anonymous

2006-10-08 03:29:33 · 6 answers · asked by Prafull 1

Time as a nonliear wave?

2006-10-08 03:11:44 · 1 answers · asked by goring 6

I read somewhere that time does not pass for photons as they are travelling at the speed of light. So, although they may have travelled for a million years across space, as far as the photon is concerned no time has passed. How does that work then? Are there any interesting implications of this? Many thanks

2006-10-08 03:07:30 · 7 answers · asked by amania_r 7