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Home Q & A Board Science-Related Homework Help Physics Astronomy
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lacerna92 lacerna92
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6 years ago
Several electrons are placed on a hollow metal sphere. They
 
  A) clump together on the sphere's inner surface.
  B) clump together on the sphere's outer surface.
  C) become uniformly distributed on the sphere's outer surface.
  D) become uniformly distributed on the sphere's inner surface.

Question 2

A wire of diameter 1.0 mm and length 3.5 m stretches 3.5 mm when 8.0 kg is hung from it.
 
  (a) What is the Young's modulus for the wire?
  (b) What is the effective spring constant for the stretching wire?

Question 3

Two coherent sound waves will destructively interfere when the path difference is the wavelength times what?
 
  A) half an even integer
  B) an integer
  C) half an odd integer
  D) an odd integer

Question 4

How similar are humans and chimpanzees genetically?
 
  A) very different, having only approximately 25 of DNA sequences in common
  B) very similar indeed, having approximately 98 of DNA sequences in common
  C) fairly similar indeed, having approximately 60 of DNA sequences in common
  D) unique, having no DNA sequences in common
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吳家良吳家良
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6 years ago
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lacerna92 Author
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#2
6 years ago
Genius!!!!!!
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