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Author Question: The angle that a swinging simple pendulum makes with the vertical obeys the equation (t) = (0.150 ... (Read 91 times)

oliviahorn72

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on: Jul 29, 2018
The angle that a swinging simple pendulum makes with the vertical obeys the equation
  (t) = (0.150 rad) cos(2.85 rad/s)t + 1.66.
  (a) What is the length of the pendulum?
 
  A) 0.15 m
   B) 0.83 m
   C) 1.21 m
   D) 2.02 m
   E) It cannot be determined from the information given.
  (b) What is the mass of the swinging bob at the end of the pendulum?
   A) 2.85 kg
   B) 1.66 kg
   C) 0.454 kg
   D) 0.150 kg
   E) It cannot be determined from the information given.

Question 2

A spherical ball of lead (density 11.3 g/cm3 ) is placed in a tub of mercury (density 13.6 g/cm3). Which answer best describes the result?
 
  A) The lead ball will float with about 83 of its volume above the surface of the mercury.
  B) The lead ball will float with its top exactly even with the surface of the mercury.
  C) The lead ball will float with about 17 of its volume above the surface of the mercury.
  D) The lead will sink to the bottom of the mercury.
  E) none of the above
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peilian

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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oliviahorn72

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Reply 2 on: Jul 29, 2018
Excellent

marict

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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