Friday, December 18, 2015
11/18 - CATCHING UP All Manga Exercises
Manga Guide 1 Pg 1-36
Calculate how much it costs to use five common appliances that you use every day in your home for 24 hours. Please let me know the applicance, its wattage, amps and volts of each appliance and how you calculated cost. You will need to go to GRU or look at one of your electric bills. How many of those appliances can you plug into one outlet without tripping a breaker? Please do this mathematically rather than through direct experience.
Calculate how much it costs to use five common appliances that you use every day in your home for 24 hours. Please let me know the applicance, its wattage, amps and volts of each appliance and how you calculated cost. You will need to go to GRU or look at one of your electric bills. How many of those appliances can you plug into one outlet without tripping a breaker? Please do this mathematically rather than through direct experience.
- 19" TV 150 W 60 Hz
- Sharp Microwave 1000 W AC 120V 60 Hz
- GE fridge
- Kenmore dryer
240V 30 Amps - Kenmore washer
120 V 15 Amps
I cannot calculate the cost because I do not get a separate electricity bill at my apartment. It is included with my rent.
Two can be plugged in without tripping a breaker.
Manga Guide 2 Pg 36-80
1. Document yourself creating some static electricity and post to blog. Use the triboelectric series to decide which materials to use to generate static electricity.
1. Document yourself creating some static electricity and post to blog. Use the triboelectric series to decide which materials to use to generate static electricity.
2. Contrast the speed of an electron with the speed of electrical motion in one sentence.
3. Briefly explain the relationship between resistance and energy. Use an example from your house.
4. What is the difference in AC and DC current? Give and example of each from your daily life. If you get shocked,
5. Determine the equivalent resistance of a 6.0 Ω and a 8.0 Ω resistor if …
a. … connected in series.
b. … connected in parallel.
Check out this exhibition where artists use electricity in their work.https://www.samuseum.org/files/Generally-Electric-Tour.pdf
I create some static electricity here by rubbing together a blanket that is fresh from the dryer. I decided to do this after remembering how static fuzzy blankets get after coming fresh out of the dryer.
3. Briefly explain the relationship between resistance and energy. Use an example from your house.
4. What is the difference in AC and DC current? Give and example of each from your daily life. If you get shocked,
5. Determine the equivalent resistance of a 6.0 Ω and a 8.0 Ω resistor if …
a. … connected in series.
b. … connected in parallel.
Check out this exhibition where artists use electricity in their work.https://www.samuseum.org/files/Generally-Electric-Tour.pdf
I create some static electricity here by rubbing together a blanket that is fresh from the dryer. I decided to do this after remembering how static fuzzy blankets get after coming fresh out of the dryer.
An electron's speed is much slower than the speed of light (less than 1% of the speed.)
Resistance halts or slows the speed or flow of energy. Appliances that work with heat, such as hair dryers, require a lot of resistance so they don't overheat or use too much energy.
AC means alternating current while DC stands for direct current. The difference is the direction in which the current flows--direct goes in one direction while alternate goes both ways.
The equivalent resistance of a 6.0 Ω and a 8.0 Ω resistor if connected in a series is 14 ohms and if connected parallel, 3.4 ohms.
Manga Guide 3 Pg 90-116
- What is the relationship between heat and electricity. Please provide a metaphor. Heat is produced with electricity flows through an electric resistance, like how heat is produced when we eat and digest food. Electricity generates heat because of the thermal vibration in something.
- Why is it warm near an incandescent light bulb? Incandescent light bulbs emit light and heat through thermal emission (infrared rays are emitted and then, as the temp rises, so does visible light.)
- What is a superconductor? What are they used for in real life? You may have to look this up. How could one make a metal a superconductor? A superconductor has zero electrical resistance and can conduct electricity almost perfectly. One example of a superconductor is superconducting magnets that are used in MRI machines. Metals must be cooled extensively in order to become superconductors.
- What is Ampere's Law? Ampere's Law is when magnetic fields are generated in a circular pattern when current flows in electrical wire.
- If current of the same size flows in the same direction in two electric wires placed side by side, what happens? The electric magnetic fields with become one large magnetic field and the wires will be attracted to each other.
- What happens if current of the same size flows in opposite directions in two electric wires placed side by side? Opposite directions in the flow of the current will make them resist each other.
Manga Guide 3 Pg 156-195
- What is an example of a semiconductor device? A thermal resistor
- Why is silicon used in the manufacture of semiconductors? The purity of refined silicon is 99.99999999999%. The silicon crystal also doesn't have any freely moving electrons so electricity will hardly pass through it.
- Discuss the difference using an example of the difference between and N-type and P-type semiconductor. N-type means that there is a negative electrical property as opposed to P-type, that has a positive electrical property. Electrical conductivity increases for P-tpe semiconductors.
- In your own words describe what a diode does and the role of N and P type semiconductors. A diode is when a p-type semiconductor and an n-type semiconductor are combined to form a p-n junction.
- What is rectification? Rectification allows current to flow in only one direction.
- What causes color in an LED? Give and example of what causes a particular color. The wavelength of the light emitted depends on the raw material of the semiconductor. InGaN creates a high-brightness blue color in an LED.
- What is the relationship between base current and collector current in a transistor? Base current is the current that flows from the base to the emitter whereas the collector current is the current that flows from the collector to the emitter (which flows when the base current flows.)
- What are the advantages of a transistor over a switch? Unlike a regular switch, a transistor has no physical contact and won't fail from being worn out. Also, it can be turned on and off rapidly so control can be fine-tuned.
Kayla Evans Chapter 8
Link to correct 8_1: https://vimeo.com/149400271
8_2:
https://vimeo.com/149400066
ANNIE KLOPP | PBS's Transistorized
Part 1:
This part of the video was blocked on youtube for copyright reasons, :( so, I just skipped to the following parts.
Part 2:
AT&T knew that if they were able to meet the demand for increasing phone services, they had to further their research in the field of vacuum tubes. At this point in time, AT&T's business relied on relays and vacuum tubes. Their business would be limited by those two types of devices. Instead, they progressed research in the field of Semiconductors like Silicon and Geranium.
In World War two, the radar made huge improvements for tracking enemy planes and ships. However, semiconductors and radars were connected. The research about these two devices lead to researching the resistor.
Anyway, AT&T was still swamped with increasing demand. Shockley and Kelly headed the research in semiconductors. In spring of 1945, real research began to happen with the semiconductor amplifier. His idea was to attach a battery two-piece to have semiconductor.
Part 3:
There were things happening on the surface of the semiconductor that prevented Shockley's first device from working. It was preventing the field from penetrating into the body of the material that the electrons were trapped on. The two were conducting many experiments to figure this out.
They tried dipping the silicon and geranium into liquid nitrogen. There was also the concern that the liquid was slowing it down. Instead, they tried injecting positive charges directly into the geranium.
Part 4:
Shockley's invention was working but the surfaces were loose. He wanted to create a sandwich to strengthen the surface.
Shockely's greatest concern changed to legal issues, however. He would not be credited as the sole inventor and other companies were pursuing the patents for it. The department wanted to credit the entire team, although it was mostly only Shockely's work.
Part 5:
Part 5 was also blocked on Youtube due to "copyright material" :(
Part 6:
The Fairchild Semiconductor company was created. The new semiconducor was sold in 1965 and was the newest, biggest change in the direction of the whole industry. The contributors on the documentary went so far as to say that we can thank our laptops and computers today to the work of Shockley's semiconductor.
Sadly, Shockley "should be comparable to Bill Gates" with the magnitude of his invention. Unfortunately this simply just didn't happen.
This part of the video was blocked on youtube for copyright reasons, :( so, I just skipped to the following parts.
Part 2:
AT&T knew that if they were able to meet the demand for increasing phone services, they had to further their research in the field of vacuum tubes. At this point in time, AT&T's business relied on relays and vacuum tubes. Their business would be limited by those two types of devices. Instead, they progressed research in the field of Semiconductors like Silicon and Geranium.
In World War two, the radar made huge improvements for tracking enemy planes and ships. However, semiconductors and radars were connected. The research about these two devices lead to researching the resistor.
Anyway, AT&T was still swamped with increasing demand. Shockley and Kelly headed the research in semiconductors. In spring of 1945, real research began to happen with the semiconductor amplifier. His idea was to attach a battery two-piece to have semiconductor.
Part 3:
There were things happening on the surface of the semiconductor that prevented Shockley's first device from working. It was preventing the field from penetrating into the body of the material that the electrons were trapped on. The two were conducting many experiments to figure this out.
They tried dipping the silicon and geranium into liquid nitrogen. There was also the concern that the liquid was slowing it down. Instead, they tried injecting positive charges directly into the geranium.
Part 4:
Shockley's invention was working but the surfaces were loose. He wanted to create a sandwich to strengthen the surface.
Shockely's greatest concern changed to legal issues, however. He would not be credited as the sole inventor and other companies were pursuing the patents for it. The department wanted to credit the entire team, although it was mostly only Shockely's work.
Part 5:
Part 5 was also blocked on Youtube due to "copyright material" :(
Part 6:
The Fairchild Semiconductor company was created. The new semiconducor was sold in 1965 and was the newest, biggest change in the direction of the whole industry. The contributors on the documentary went so far as to say that we can thank our laptops and computers today to the work of Shockley's semiconductor.
Sadly, Shockley "should be comparable to Bill Gates" with the magnitude of his invention. Unfortunately this simply just didn't happen.
ANNIE KLOPP | Manga Electricity Part Three
Page 90-116
Question 1:
What is the relationship between heat and electricity. Please provide a metaphor.
First of all, a calorie is a measurement of heat. When this heat is flowing through electricity it is measured in joules, as in "joule heat." Why does electricity create heat? This is because the atoms within a substance are always moving due to their electrons: "thermal vibration." Heat and thermal vibration have a positive correlation. When an object is heated, its atoms move more. In this way, resistance and using resistors "cools" your current by slowing down the speed of movement and therefore heat.
One metaphor for this relationship is an engine. As you accelerate in your car, alternating speeds, you generate resistance. Your car is going to generate more heat as a result than it would at a constant or resting speed.
The metaphor explained in the book is a train station. As the train station gets busier, it is harder and harder to cross and get to your destination due to the traffic. This would create great heat with its greater resistance.
Question 2:
Why is it warm near an incandescent light bulb?
As the temperature of metal increases, resistances increases as well. When this resistance occurs and the temperature is increasing as well, naturally, heat is generated as a result. We can see this heat in the form of infared light. We can also call this "thermal emission." Typical lightbulbs heat up as a result of their metal components, increasing temperature, and increasing resistance, and therefore, production of infared heat waves.
Question 3:
What is a superconductor? What are they used for in real life? You may have to look this up. How could one make a metal a superconductor?
When there is no resistance at all (no heat), the atoms are allowed to move freely and with ease.
According to superconductors.org, MRI is one of the most common examples for the use of a superconductor. Here is a quote from the website describing this superconductive process: Doctors need a non-invasive means of determining what's going on inside the human body. By impinging a strong superconductor-derived magnetic field into the body, hydrogen atoms that exist in the body's water and fat molecules are forced to accept energy from the magnetic field. They then release this energy at a frequency that can be detected and displayed graphically by a computer.
According to http://www.supraconductivite.fr/, you can create a superconductor at home with a magnet and liquid nitrogen. You would need to cool down the magnet with the liquid nitrogen (remember, the superconductors have zero heat!). This magnet can be so powerful that it can levitate, according to the website.
Question 4:
What is Ampere's Law?
The book states that Ampere's Law is the phenomenon of magnetic fields moving around a wire in a circular direction. There is a polarity, however, associated with Ampere's Law, so the wires will move current in one of either two directions.
Question 5:
If current of the same size flows in the same direction in two electric wires placed side by side, what happens?
The two electric wires will attract to each other and combine to form one, larger magnetic field (as long as the current is facing the same direction).
Question 6:
What happens if current of the same size flows in opposite directions in two electric wires placed side by side?
However, if the currents flow in different directions in the wires, they will cancel each other out. Essentially, they "disappear" according to the text book.
Question 7:
Please read about Flemings Left and Right Hand Rule. Think about this Rule with respect to the motors we have made this week.
Fleming's Left and Right Hand Rule applies to DC motors. Force, magnetic field, and current are on a triple axis. Similar to my accelerometer, these will flow in three connected but different directions. If you were to stick out your left hand for example (left hand rule), and point: the magnetic field would flow in the direction of your index finger, the force would flow from your thumb, and the current would flow from your second finger next to your index finger (slightly different than magnetic field).
Left hand rule determines the direction that a motor turns. The current of a DC motor flows toward the battery (upward).
The right hand rule can be used to determine the direction of current from an electric generator.
Question 1:
What is the relationship between heat and electricity. Please provide a metaphor.
First of all, a calorie is a measurement of heat. When this heat is flowing through electricity it is measured in joules, as in "joule heat." Why does electricity create heat? This is because the atoms within a substance are always moving due to their electrons: "thermal vibration." Heat and thermal vibration have a positive correlation. When an object is heated, its atoms move more. In this way, resistance and using resistors "cools" your current by slowing down the speed of movement and therefore heat.
One metaphor for this relationship is an engine. As you accelerate in your car, alternating speeds, you generate resistance. Your car is going to generate more heat as a result than it would at a constant or resting speed.
The metaphor explained in the book is a train station. As the train station gets busier, it is harder and harder to cross and get to your destination due to the traffic. This would create great heat with its greater resistance.
Question 2:
Why is it warm near an incandescent light bulb?
As the temperature of metal increases, resistances increases as well. When this resistance occurs and the temperature is increasing as well, naturally, heat is generated as a result. We can see this heat in the form of infared light. We can also call this "thermal emission." Typical lightbulbs heat up as a result of their metal components, increasing temperature, and increasing resistance, and therefore, production of infared heat waves.
Question 3:
What is a superconductor? What are they used for in real life? You may have to look this up. How could one make a metal a superconductor?
When there is no resistance at all (no heat), the atoms are allowed to move freely and with ease.
According to superconductors.org, MRI is one of the most common examples for the use of a superconductor. Here is a quote from the website describing this superconductive process: Doctors need a non-invasive means of determining what's going on inside the human body. By impinging a strong superconductor-derived magnetic field into the body, hydrogen atoms that exist in the body's water and fat molecules are forced to accept energy from the magnetic field. They then release this energy at a frequency that can be detected and displayed graphically by a computer.
According to http://www.supraconductivite.fr/, you can create a superconductor at home with a magnet and liquid nitrogen. You would need to cool down the magnet with the liquid nitrogen (remember, the superconductors have zero heat!). This magnet can be so powerful that it can levitate, according to the website.
Question 4:
What is Ampere's Law?
The book states that Ampere's Law is the phenomenon of magnetic fields moving around a wire in a circular direction. There is a polarity, however, associated with Ampere's Law, so the wires will move current in one of either two directions.
Question 5:
If current of the same size flows in the same direction in two electric wires placed side by side, what happens?
The two electric wires will attract to each other and combine to form one, larger magnetic field (as long as the current is facing the same direction).
Question 6:
What happens if current of the same size flows in opposite directions in two electric wires placed side by side?
However, if the currents flow in different directions in the wires, they will cancel each other out. Essentially, they "disappear" according to the text book.
Question 7:
Please read about Flemings Left and Right Hand Rule. Think about this Rule with respect to the motors we have made this week.
Fleming's Left and Right Hand Rule applies to DC motors. Force, magnetic field, and current are on a triple axis. Similar to my accelerometer, these will flow in three connected but different directions. If you were to stick out your left hand for example (left hand rule), and point: the magnetic field would flow in the direction of your index finger, the force would flow from your thumb, and the current would flow from your second finger next to your index finger (slightly different than magnetic field).
Left hand rule determines the direction that a motor turns. The current of a DC motor flows toward the battery (upward).
The right hand rule can be used to determine the direction of current from an electric generator.
Mini Sketch 2 Pictures (James Worthy)
here are the pictures for the finished mini sketch 2. Im sorry I thought I sent them a while ago. Im still have problems with it working. But I saw that you didn't have a picture of how it looked for record. Hopefully i could get a couple more points added for these pictures.
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