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Author Question: A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose ... (Read 75 times)

Diane

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on: Jul 29, 2018
A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 150 N/m. The block is pulled from its equilibrium position at x = 0.00 m to a displacement x = +0.080 m and is released from rest.
 
  The block then executes simple harmonic motion along the horizontal x-axis. When the displacement is x = 0.024 m, what is the kinetic energy of the block? A) 0.44 J
  B) 0.41 J
  C) 0.46 J
  D) 0.49 J
  E) 0.52 J

Question 2

Chemically, helium is
 
  A) an isotope.
  B) an element.
  C) a mixture.
  D) a solid.
  E) a compound.


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Missbam101

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

B


Diane

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Reply 2 on: Jul 29, 2018
Gracias!

alvinum

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Reply 3 on: Yesterday
Excellent

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