The magnetic susceptibility of diamagnetic materials is nearly
independent of temperature, but this is not so for paramagnetic
materials, whose susceptibilities decrease with increasing
temperature. Why do paramagnetic materials display this
behavior,and why don’t diamagnetic materials do the same?
Chapter 6:
What is electric and magnetic force?
What is the application for electric and magnetic force?
What is electric current and how digital devices work?
How do we store electrical energy?
How microphone works?
How MRI works?
Why microwave can warm your food?
What is an Electric motor?
What is Superconductivity? How magnetic levitation works?
Chapter 7:
Types of Waves
Properties of Waves
Behaviour of Waves:
- light
- Sound
- Sound in the atmosphere
- Earthquakes waves
Some materials, such as poly(dimethyl siloxane) or PDMS, have a
wide variety of applications, such as breast implants, contact
lenses, and knuckle replacements. Other materials, such as
poly(propylene) (PP) are primarily used for only one application
(in this case, sutures). Using a popular search engine compare the
structures of PP and PDMS. Fill out the attached table. Using your
answers, answer the following questions:
Poly(propylene)
Poly(dimethyl siloxane)
Chemical formula
Sketch the molecule
Mechanical properties
Thermal properties
Chemical properties
Degradation properties...
What is the difference between the magnetic field of the
bar magnet and
the magnetic field of the solenoid? (also in terms of
how the lines and direction should differ)
1. Define magnetic north, geographic north, magnetic declination
and magnetic inclina- tion.
2. What features of a solenoid change the magnetic field strength?
What is the equation for the magnetic field of a solenoid?