viernes, 29 de marzo de 2013
miércoles, 27 de marzo de 2013
Kart Test
For this past Wednesday, March the 20th, we had to bring a small kart made of any material we wanted for our Physic's class. We went to the lab and we measured the force and the mass of our kart. We did several trials and we recorded different results which didn't vary a lot from each other.
The first mass of our kart was of 82.88 grams.
We then tried to measure the force that was required to move our kart by pulling it with the spring balance. We weren't able to to measure the force required to move our kart because they weight of our kart was too little, so what we did was that we increased the mass of our kart times 3.
We then recorded a weight of 248.64 grams. After increasing the weight of our kart, we tried to measure the force required to move it and we recorded several results which can be seen in the following table.
The first mass of our kart was of 82.88 grams.
We then recorded a weight of 248.64 grams. After increasing the weight of our kart, we tried to measure the force required to move it and we recorded several results which can be seen in the following table.
miércoles, 13 de marzo de 2013
Dancing Physics
In our past Physics class with Mr. José Popoff, we had the opportunity to dance with a dancepad a classmate took to school. You might be asking yourself "what does dancing has to do with Physics?" Lets see.
The topic we are studying in Physics is Newton's Laws of Motion. First of all, lets state Newton's Laws.
1. First law: If there is no net force on an object, then its velocity is constant. The object is either at rest (if its velocity is equal to zero), or it moves with constant speed in a single direction.
2. Second law: The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma.
3. Third law: When a first body exerts a force F1 on a second body, the second body simultaneously exerts a force F2 = −F1 on the first body.
Now that we have stated this laws, lets apply them when dancing.
First Law.
Explanation: The first law says that if there's not a changing force applied to an object, for example if you don't push/pull harder or softer, then the object's velocity is going to be constant. If the velocity is constant, the object can be at rest (if its velocity is equal to zero) or it can be moving with a constant speed and in a single direction. Constant means that it doesn't change at all.
Application: Lets take your body as the object. If you are not moving at all (velocity equals zero), then your velocity is constant because it is always zero. Now, lets say you start moving from left to right and you don't stop nor change your velocity, no one gets in your way, so you continue to move and move. Since you are not accelerating, there's no net force being applied on you, therefore there's no change in your velocity making your velocity be constant.
Second Law.
Explanation: The second law of motion says that the acceleration of an object is dependent upon two variables, the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting on the object, and inversely on the mass of the object. As the net force is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Application: Again, lets take your body of an object. When you dance, sometimes you jump, so lets say you are jumping. When you jump, you excert a force against the floor which pushes you up, this is the net force. Depending on how strong the net force is you will jump high or not that high. Then, how high or how much you accelerate, is dependent on how strong the net force is. Now the mass. Lets say you have this friend who is chubby. He has a lot of mass! What do you think is easier? Is it easier for a thin kid to jump or for a chubby one? For the thin, of course! Why? Because the mass of the thin kid is less than mass of the chubby one, therefore it's easier for him to lift his body from the floor. So we can say that an object's acceleration depends on its mass.
Third Law.
Explanation: The third and last of Newton's laws says that when, for example, lets say you gave an initial force (F1) to an object, that force caused the object to move, so the object is moving, and moving, and moving, when suddenly, it hits another object. When the first object hit the second object, it produced a force on the second object (F2) which is in the opposite direction to F1 but with the same magnitude. (-F1). This means that F1 and F2 are equal in magnitude and opposite in direction.
Application: Lets say we are not expert dancers. We are human and we make mistakes. So while we are dancing, we are moving from side to side, and suddenly we crash against a mate who is not moving (he is at rest, velocity equals zero). When we crash against him, we excert a force on him, causing him to move and eventually fall to the floor. The force we excerted on him has exactly the same magnitude or strength as the force that was moving us but in the opposite direction.
So, now you know how you can apply physics when dancing. Hope you liked my post, I would appreciate any comment. Thank you very much for reading.
The topic we are studying in Physics is Newton's Laws of Motion. First of all, lets state Newton's Laws.
1. First law: If there is no net force on an object, then its velocity is constant. The object is either at rest (if its velocity is equal to zero), or it moves with constant speed in a single direction.
2. Second law: The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma.
3. Third law: When a first body exerts a force F1 on a second body, the second body simultaneously exerts a force F2 = −F1 on the first body.
Now that we have stated this laws, lets apply them when dancing.
First Law.
Explanation: The first law says that if there's not a changing force applied to an object, for example if you don't push/pull harder or softer, then the object's velocity is going to be constant. If the velocity is constant, the object can be at rest (if its velocity is equal to zero) or it can be moving with a constant speed and in a single direction. Constant means that it doesn't change at all.
Application: Lets take your body as the object. If you are not moving at all (velocity equals zero), then your velocity is constant because it is always zero. Now, lets say you start moving from left to right and you don't stop nor change your velocity, no one gets in your way, so you continue to move and move. Since you are not accelerating, there's no net force being applied on you, therefore there's no change in your velocity making your velocity be constant.
Second Law.
Explanation: The second law of motion says that the acceleration of an object is dependent upon two variables, the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting on the object, and inversely on the mass of the object. As the net force is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Application: Again, lets take your body of an object. When you dance, sometimes you jump, so lets say you are jumping. When you jump, you excert a force against the floor which pushes you up, this is the net force. Depending on how strong the net force is you will jump high or not that high. Then, how high or how much you accelerate, is dependent on how strong the net force is. Now the mass. Lets say you have this friend who is chubby. He has a lot of mass! What do you think is easier? Is it easier for a thin kid to jump or for a chubby one? For the thin, of course! Why? Because the mass of the thin kid is less than mass of the chubby one, therefore it's easier for him to lift his body from the floor. So we can say that an object's acceleration depends on its mass.
Third Law.
Explanation: The third and last of Newton's laws says that when, for example, lets say you gave an initial force (F1) to an object, that force caused the object to move, so the object is moving, and moving, and moving, when suddenly, it hits another object. When the first object hit the second object, it produced a force on the second object (F2) which is in the opposite direction to F1 but with the same magnitude. (-F1). This means that F1 and F2 are equal in magnitude and opposite in direction.
Application: Lets say we are not expert dancers. We are human and we make mistakes. So while we are dancing, we are moving from side to side, and suddenly we crash against a mate who is not moving (he is at rest, velocity equals zero). When we crash against him, we excert a force on him, causing him to move and eventually fall to the floor. The force we excerted on him has exactly the same magnitude or strength as the force that was moving us but in the opposite direction.
So, now you know how you can apply physics when dancing. Hope you liked my post, I would appreciate any comment. Thank you very much for reading.
domingo, 3 de marzo de 2013
Who am I? This is me.
This is Antonio José Rodríguez Zavala (Alias Tony)! I'm 16 years old. I was born December 22, 1996. I'm from the city of La Lima, Cortés, Honduras, C.A. I attend Sunshine Christian Bilingual Institute. My homeroom teacher is Mr. José Popoff. I live with my parents, I also have a brother and a sister both younger than me. I'm a musician, I play 7 instruments, Piano, Bass, Acoustic and Electric Guitar, Drums, Violin, Flute, and percussion generally. I love playing soccer, volleyball, tennis and any other sport. I love hanging out with my friends and having fun. I LOVE MUSIC. ♥ I love everything that has to do with music. I'm a writer and future producer. Music is "my everything". I listen to all types of music; classic, rock, pop, hip hop, rap, techno (dance, trance, house, dub-step, etc.), merengue, country, bachata, salsa, etc. My favorite bands/artist are Muse, Linkinpark, Coldplay, 30 Seconds to Mars, Bruno Mars, Foo Fighters, Maroon 5, Wiz Khalifa, Panic! at the Disco, Foster the People, Lana del Rey, and many more. I go to church and praise the Lord.
Antonio Rodríguez on Facebook.
Antonio Rodríguez on Twitter.
Instagram: Tony_JRZ
Skype: Aj_rodriguez96
Antonio Rodríguez on Facebook.
Antonio Rodríguez on Twitter.
Instagram: Tony_JRZ
Skype: Aj_rodriguez96
iDevice Jailbreaking
It's a very interesting topic, considering that its process may vary according to the device you posses.
You have to be very careful throughout the process, otherwise you can turn your iDevice into an iBrick (making it no longer useful). Its a very easy process.
In order to jailbreak you need:
Redsn0w:
-redsn0w 0.9.15b3 (Windows)
-redsn0w 0.9.15b3 (OS X)
And your device latest Firmware:
-All firmware download links
Once you have these, follow these steps:
-Unzip redsn0w files.
-Run redsn0w.
 |
This window should appear. |
 |
| Turn your device off and click next. |
To put your device in DFU mode you need to follow the next steps:
Step 1: Hold the power button for 3 seconds.
Step 2: Without releasing the power button, press the home button for 10 seconds.
Step 3: Release the power button and continue holding the home button for another 15 seconds.
And that's it. Your device should now be on DFU mode (black screen). If it didn't work the first time, repeat the process until it does.
The rest of the process will take place on your device.
Once the process is done, you will have a Jailbroken device. :)
Hope this tutorial helps you. If you got any questions let me know, I will be more than pleased to help you. ;)
Antonio Rodríguez on Twitter
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