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Home Q & A Board Science-Related Homework Help Physics Astronomy
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loryatchy loryatchy
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6 years ago
The heat of fusion of lead is 5.9 kcal/kg, the heat of vaporization is 207. cal/kg, and its melting point is 328C. How much heat is required to melt 50. g of lead initially at 23C? (The specific heat of lead is 0.031 kcal/kg-C.)
 
  What will be an ideal response?

Question 2

John can hit a golf ball 310. m on Earth. On the moon's surface, g = g earth, so how far could he hit the same ball if he could only achieve half the initial speed at the same angle as that achieved on Earth?
 
  A) 1860. m
  B) 155. m
  C) 78. m
  D) 396. m
  E) 465. m

Question 3

Molecules like water in which electrons are distributed unevenly within the molecule are referred to as
 
  A) bipolar
  B) ionic
  C) charged
  D) polar

Question 4

An ideal fluid in a pipe of diameter 14. cm is moving at 6.0 m/s.
 
  (a) If the incompressible fluid density is 1.05 grams/cc, what is the flow rate in kg/s?
  (b) What is the speed of flow if the pipe narrows to 4.0 cm radius?
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barelysurvingbarelysurving
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6 years ago
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loryatchy Author
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6 years ago
I wanna give this person a hug.
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