Saturday
August 30, 2014

Homework Help: physics

Posted by physics on Saturday, March 14, 2009 at 8:32pm.

please check this:
Which sentence best describes electrical conductors?
a. electrical conductors have low mass density
b. electrical conductors have high tensile strength
c. electrical conductors have electric charges that move freely
d. electrical conductors are poor heat conductors

C

Which statement is the most correct regarding electric insulators?
a. charges within electric insulators do not readly move
b. electric insulators have high tensile strength
c. electric charges move freely in electric insulators
d. electric insulaotrs are good heat conductors

A

The process of charging a conductor by bringing it near another charged object and then grounding the coductor is called
a. contact chargin
b. induction
c. polarization
d. neutralization

B

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