Tuning Fork and Palm Pipe Lab

We used the tuning fork in class to be able to calculate the frequency. We hit the tuning fork on our shoe and then put it next to the microphone on the sound probe. The sound probe was used to get the frequency which was the highest bar on the graph. Then once we got frequency, we plugged the number into wolfram alpha to get the musical note for the tuning fork.

The Palm Pipe Lab got the musical note in a slightly different way. First, we measured the length/diameter of our palm pipe. Once we got the diameter and length, we plugged it into a formula to get the wavelength which is what we needed in order to get the frequency since we already had the speed of light, but not the wavelength. Once we finally plugged in the wavelength and got the frequency, we plugged in the frequency into wolfram alpha to get the musical note. We learned how to find the musical note of the pipe which helped us to play a song, but it didn't seem to go too well. 

Light and Optics Real World Connection

Here is an image of a chair that is reflected by the mirror on the door. The chair seems to be smaller in the reflection than in front of you. The chair has an angle of reflection which is between the normal line and  incident ray.

Magnetism Lab

Question: How can we use the right Hand Rule #1 help us predict the direction of a magnetic field generated by electricity (current)? (Standard 6.2)

The right hand rule #1 can be used to help us predict the direction of a magnetic field generated by the current by realizing that the current can produce a magnetic field. Currents are moving charges that flow through loops which makes it magnetic. The right hand rule #1 works by pointing your thumb with the direction of the current and finger curls in the direction of the magnetic field. Depending on which direction your thumb goes will tell you which way the current is going. The direction that your finger curls will either tell you that the magnetic field is going into or out. Using the right hand rule #1 can be an efficient way to finding the direction of the magnetic field. 

Lemon Battery Lab: Real World Connection

Link: http://www.apple.com/batteries/

What materials is the iPad battery made with?

The iPad battery is made with lithium ion which is made from polymer. 

 How does the iPad battery function?

The iPad battery functions by recharging. Most lithium-ion polymer batteries use a fast charge to charge the iPad to 80% battery capacity, then switches to something called "trickle charging." That’s about two hours of charge time to power an iPad to 80% capacity, then another two hours to fully charge it to 100%, but only if you are not using the iPad while charging. 


                                                                           What are some future plans for improving iPad batteries? 
 Some future plans for improving iPad batteries is that the ipad battery will not last longer, but will try to maximize the use during the hours with battery. Apple may try to minimize the battery consumption on movies, apps, or other things that burn battery faster.  


  Real World Connection: 
   The article that I found brings up some things similar to our class discussion. The article describes batteries which involves voltage which is something that we have been discussing in class. I learned about what kind of battery the iPad uses and what the function of it is. Batteries can be such powerful things because without them, many things would not be able work. Batteries can be used in many different forms such as a lemon which is what we did in class trying to use the lemon as a battery.

Projectile Motion Reflection on Learning

The Projectile Motion Basketball Lab makes use of a projectile. A projectile is something that is in the air and nothing else except for the force of gravity is acting on it. One person shoots the basketball and another person uses their ipad to record them. We then use the Vernier Video Physics App  to analyze the shot taken by the person. The information that we got from the video was the X and Y Graph. The X graph shows the horizontal movement of the basketball and the Y graph shows the vertical movement. The velocity of X is always constant, but Y can change. What I noticed from the lab was that the basketball was shot in a kind of arc.

Forces in 2D and Circular Motion

Big Questions: 
1)  What does it mean to analyze forces in 2D?
2) How do forces cause objects to move in a circle?
3)What does it mean to be in orbit? How do satellites orbit planets? How do planets orbit the sun?

 During class this week, we have been learning about forces in 2D and Circular Motion. We learned about tension and how to find the Fx and Fy by using SOH CAH TOA which is something that we learned last year in geometry. During the lab involving the hover disk, we had the hover disk connected to a string which we used to move in a circle. The reason that the hover disk moved in a circle was due to the tension that we applied on it. The part of the lab where we had to spin the hover disk in a circle and then release it was to see if it would continue moving in a circle. My group and I concluded that it went in a straight line and the reason it did not continue moving in a circle was because no tension was being applied after releasing the hover disk.

Being in orbit means that the object still moves in a circle and continues going around. Satellites orbit planets with the help from the gravitational pull which makes the object fall at high speeds but is still moving in a circle due to the planet orbiting around. Planets orbit the sun with the help of the sun's gravity which is similar to all other planets.    

Fan Cart Lab/ Hover Disc Lab

Purpose: The purpose of the Fan Cart lab is to be able to understand Newton's 3 Laws of Motion.

Big Questions: What is the RELATIONSHIP between MASS, FORCE and ACCELERATION?

The relationship between mass, force, and acceleration is that they are all related because the mass and force can be factors that change the acceleration and since the more force applied may make the acceleration faster depending on the mass of the object.

What gives rise to a change in motion?
The different forces acting upon the hover disc while on top of the pocket of air changed the way the disc moved since there was no friction. 

Data/ Whiteboard:

 This whiteboard shows the data my group and I collected for the Fan Cart lab. We included the 5 trials and the force, mass, and acceleration. As you can see, the force is constant, but the mass is different for each trial which greatly changed the acceleration. The less the mass was, the more the acceleration.






Real Life Connection:

This lab connects to our everyday life because if you try to pull against something heavy it is still going to be the same force even though you may be pulling in an opposite direction. This picture shows a boy trying to pull the wall and an elephant, but what you can see is that the force is the same for both pictures, but the elephant is moving, but not the wall.