Week Five Exercises Phy/101 Essay

1047 Words May 16th, 2015 5 Pages
Week Five Exercises
Chandler W. Morgan
May 2, 2015
Dr. Rashmi Sharma

Week Five Exercises
Ch. 22 Exercise 8
Your hair becomes positively charged upon the removal of electrons through the comb. These electrons are now present in the comb and absent from the hair causing the comb to have a negative charge. Because both the comb and the hair were neutral, electrons have a negative charge. http://physics.stackexchange.com/questions/63557/why-does-the-comb-attract-the-pieces-of-papers-if-theyre-neutral Ch. 22 Exercise 38
When you rub a balloon against an object, it takes the electrons from that and becomes a negatively charged object. Once you place the balloon near a wall, the electrons in the wall are repelled away from
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24 Exercise 3
An object must be ferromagnetic in order for that object to have a strong magnetic properties of their own. If the object is ferromagnetic, it must then have all its magnetic dipoles to be uniform and point in the same direction. However, if an object is not ferromagnetic or the dipoles are not uniform, the magnetic field generated by the materials would not process any noticeable fields. This is caused by the Vector Field inside the material which cancels each other out. http://hyperphysics.phy-astr.gsu.edu/hbase/solids/ferro.html Ch. 24 Exercise 22
The only place on the compass that would have a hard time making up its mind is right on top of its magnetic poles. If you cross the equator, the North Pole of the earth may not be as affected as the South Pole, however, the effect will have the same results. Quick reference: the north and south magnetic poles of the earth are opposite. http://www.windows2universe.org/earth/Magnetosphere/earth_magnetic_poles.html Ch. 25 Exercise 2
Guitar pickups work via the principle of electromagnetic inductance. The metal strings vibrate within the magnetic field of the pickup which generates an electrical current. It is obvious as well as common sense that Nylon is not metal, therefore, there will be no electric current present which, in turn, means that there is no signal to amplify.

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