Physics - November 2006

Given the following graph, what is the period of oscillations?

http://i17.photobucket.com/albums/b58/asklepiades02/Image12.gif

2006-11-13 15:18:45 · 1 answers · asked by tonberry79 3

An airplane is flying with velocity (152, 0) m/s. It is accelerated in the x direction by its propeller at 8.92 m/s2 and in the negative y direction by a strong downdraft at 1.21 m/s2. What is the airplane's velocity after 3.10 seconds?

2006-11-13 15:16:06 · 2 answers · asked by xiuhcoatl 1

The displacement vector for a 15.0 second interval of a jet airplane's flight is (2450, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval?

2006-11-13 15:14:28 · 2 answers · asked by xiuhcoatl 1

2006-11-13 15:11:17 · 4 answers · asked by poena69 2

BTW, is There Any Hard Evidence that the Iranians Are Enriching U-235 to Weapons Grade?

Additionally, Can One Speculate as to Why the North Korean Plutonium Bomb Fissled?

2006-11-13 14:57:31 · 1 answers · asked by Anonymous

Hey, i need these ASAP...please help...thanks!!!
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A 321 g sample of water absorbs infrared radiation at 1.06 X 10^4 nm from a carbon dioxide laser. Suppose all the absorbed radiation is converted to heat. Calculate the number of photons at this wavelength required to raise the temperature of the water by 5.00°C.
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AND

***********How many photons at 660 nm must be absorbed to melt 4.0 X 10^2 g of ice? (Hint: It takes 334 J to melt 1 g of ice at 0°C.)
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On average, how many H2O molecules does one photon convert from ice to water?

2006-11-13 14:56:28 · 2 answers · asked by Hadeer S 1

Calculate the speed acquired and the distance covered in 4 sec from rest

2006-11-13 14:54:14 · 3 answers · asked by theedrunkenclam 1

that is oriented 37 degrees above the horizontal

2006-11-13 14:37:19 · 2 answers · asked by theedrunkenclam 1

Space time?more space warping?

2006-11-13 14:36:19 · 14 answers · asked by goring 6

2006-11-13 14:31:02 · 3 answers · asked by Link 4

a 150-n bird feeder is supported by three cables find the tension in each cable. the angles are 60 top left 30 top right and 90 on the bottom with a cable connected to the bird feeder

2006-11-13 14:31:00 · 1 answers · asked by Alex C 1

2006-11-13 14:30:29 · 7 answers · asked by Link 4

The displacement vector for a 15.0 second interval of a jet airplane's flight is (3150, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval?

2006-11-13 14:27:10 · 3 answers · asked by Anonymous

2006-11-13 14:13:49 · 4 answers · asked by goring 6

A uniform rod of mass 3.15×10−2 kg and length 0.380 m rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.250 kg, are mounted so that they can slide along the rod. They are initially held by catches at positions a distance 5.20×10−2 m on each side from the center of the rod, and the system is rotating at an angular velocity 34.0 rev/min. Without otherwise changing the system, the catches are released, and the rings slide outward along the rod and fly off at the ends.

2006-11-13 13:54:56 · 1 answers · asked by mage3001 2

2006-11-13 13:47:10 · 2 answers · asked by Anonymous

How much hear in Joules is required to boil away .5kg of water initially at 50C?

2006-11-13 13:40:20 · 3 answers · asked by lubna h 1

When we use the equation e=mc**2 to calculate the energy of an atomic reaction. Let's say if one gram of matter is used up. So the numbers would be:

e= 1 x 3 x 10**8 x 3 x 10**8
= 9 x 10**16 gm meter**2/sec**2

Pardon my ignorance. What is this unit of energy called?

Also how would that convert to the English units.

thanks

rm

2006-11-13 13:40:03 · 3 answers · asked by rm 1

Given that an object has an emissivity of .75 and an area of .20m^2 , how much energy does it radiate outward per second at 20C?

2006-11-13 13:39:13 · 1 answers · asked by lubna h 1

If the heat required for a process is 250.3J, with a temperature difference of 5C, and the amount of the material is doubled, with the same temperrature difference, what will be the amount of heat transferred? Consider only conduction.

2006-11-13 13:35:34 · 1 answers · asked by First L 1

Which of its sides is the hypotenuse? Which side is opposite the 37 degree angle? Which side is opposite the 53 degree angle?

2006-11-13 13:31:34 · 4 answers · asked by theedrunkenclam 1

2006-11-13 13:30:16 · 2 answers · asked by hwt_275 1

help need it for trivia test.

2006-11-13 13:26:04 · 5 answers · asked by z 2

Volume of a cube?
in my science project i had to find the volume of an ice cube and i measured length x width x height and i got 40.5 cm.does that make sense??? because i turned my project in already and i need to make a presentation tommorow....did i mess up ?


would it make sense if i just added cubic centimeters?

2006-11-13 13:21:39 · 2 answers · asked by sylviacutie06 1

Compare the radius of a positive ion to the radius of its neutral atom.

They dont metion this on my book, i've been looking for 30 min.

Also, compare the radius of a negative ion to the radius of its neutral atom.

2006-11-13 13:18:00 · 5 answers · asked by Ballerina 1

I know it seems really stupid to ask, but how do you develop physic abilities?

2006-11-13 13:07:11 · 10 answers · asked by Natalie 2

On the subject of Gluons, Color is a conserved quantity. Also, there are 9 possible combinations of Color-Anticolor Charge. There should then be 9 different Gluon charges, but there are only 8. How is this possible?

2006-11-13 12:59:25 · 1 answers · asked by Smart Dude 6

I'm talking about quantum ... strings and wormholes stuff.

2006-11-13 12:46:28 · 9 answers · asked by synapse 4

I'm talking about a vacuum, like the science term, not the thing you clean your floors with. I know you techincally probably can't breathe in a vacuum, but for now just assume that breathing isn't a problem.

2006-11-13 12:45:12 · 7 answers · asked by packers1665 2

2006-11-13 12:31:38 · 2 answers · asked by Doris E 1