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posledela
3 years ago
9

A researcher plans to obtain data by interviewing relatives of victims who perished in a hurricane to see how they're coping now

Social Studies
1 answer:
lina2011 [118]3 years ago
4 0
The researcher should use <span>cross-sectional observation.
</span><span>cross-sectional observation will analyze a certain population that has similarty, divide them into group, and compared it at one time.
</span><span>From this, we could see whether all group display a same response toward the similar occurrence that happen to them.

</span>
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Self-inductance: an ideal solenoid has a self-inductance l. if you now double its radius and its length, but do not change the n
andrew-mc [135]

Self-inductance:The coefficient of self inductance will rise as the solenoid's length increases because it is directly related to length: When a coil's turn count is doubled, its coefficient of self-inductance increases by a factor of four. The reason for this is that self-inductance is inversely related to the square of a coil's number of turns.

The inductance increases when the solenoid's length and number of turns are both doubled while maintaining the same cross-sectional area. The answer is "L=mu 0 N2/l A." L is doubled when N and l are both increased.

The flux that is associated with a solenoid when a unit quantity of current is sent through it is the solenoid's self-inductance.

Learn more about Self-inductance here.

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