Week 14 Hw 2

17. What is your guess as to the relationship between the current in the coil and the magnetic field?

3. Does increased exposure to the sun’s light produce more current? Explain how you know this based on your data.

Lenz’s Law: “An induced EMF always gives rise to a current that creates a magnetic field that opposes the original change in flux ”1

Rachel is talkative, sociable, and adventurous. She loves to be the center of attention. Which of the 'Big Five' personality traits pertains to Rachel's characteristic behavior?

Otherwise their static. No one believed Maxwell, and Hertz set out to prove Maxwell right. Hertz used two rods to serve as a receivers. When the applied a spark to one of the rods, he could get it to jump to the other rod. Hertz discovered how to make the electric and magnetic fields separate themselves and travel freely. ("The origins of radio, n.d." )

BE4-1 Transactions that affect earnings do not necessarily affect cash. Identify the effect, if any, that each of the following transactions would have upon cash and net income. The first transaction has been completed as an example.

-The current stops even though the airplane continues to fly through the Earth’s magnetic field, because the losses which occurred when a motor operates a generator and when the voltage is stepped up by a transformer is not considered. After the completion of each cycle, the energy outputted decreases due to the losses in the motor, the generator, and the transformer. Therefore, this will stop.

2) The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the

9. Strong involuntary muscle reactions to shocks can occur in a amperage ranges as low as __________________.

The electric motors work by electricity and magnets working together. Once the electricity gets going, the magnets take over. The magnets keep the motor going because the magnets used in motors have both positive and negative magnets on both sides. Surrounding the magnetic ends, are one positive and one negative magnet. This means that at any

Our value for the magnetic field is different than the USGS value for Fayetteville because the USGS value is an average for all of Fayetteville, and we measured it at one particular spot. Though it is not included in this report, we also measured the actual field at the location of the solenoid, and our value was within 10% of that value. Any deviation from the actual value of the field can be attributed to stray fields near the solenoid, and the shielding nature of the SCEN building.

This research paper will show and illustrate the basics of what a railgun is, how it functions, and why it was created. From there, it will further explicitly explain some of electromagnetics and physics that dictate the machine and its operation. Finally, a few of the arduous problems as well as what impact the railgun might have in our future is explained.

Originally electricity and magnetism were thought of as two separate forces. This view changed, however, with the publication of James Clerk Maxwell's 1873Treatise on Electricity and Magnetism in which the interactions of positive and negative charges were shown to be regulated by one force. There are four main effects resulting from these interactions, all of which have been clearly demonstrated by experiments:

Lenz law [2] comes into play as my hoverboard essentially will be over a conductive surface (Copper or Aluminium). Lenz law [3] states “A electric current, induced by a source such as a changing magnetic field, always creates a counterforce opposing the force inducing it”. A better understanding the idea of a magnet going through a copper tube can be used because as the magnet falls down this tube, a current is induced which flows in the direction that opposes the change in magnetic flux and hence the current will flow in the direction to cause a like-pole to form which will repel the falling magnet and so the magnet falls slower relative to the speed it normally would and as it exits the copper tube the current will oppose the change in magnetic flux and form a pole which will speed up the falling magnet [3]. The reason I went into such detail is my main principle on my designs workings. Regarding mentioning this my design does have constraints as it can only be used over conductive materials and for it to levitate it must induce

Maglev train denotes the train is lifted above its tracts by electromagnetic force. With the maglev technology developing rapidly, maglev train has been widely applied nowadays like Japan HTTS series and German TR series.This essay will examine the key technologies of maglev train from both the dominated systems and the main characteristics of high and low speed maglev trains perspectives.