This topic contains a solution. Click here to go to the answer

Author Question: A projectile is fired from ground level on a horizontal plain. If the initial speed of the ... (Read 197 times)

tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
A projectile is fired from ground level on a horizontal plain. If the initial speed of the projectile is now doubled, and we neglect air resistance,
 
  A) its range will be increased by .
  B) its range will double.
  C) its range will be decreased by a factor of two.
  D) its range will quadruple.
  E) its range will decrease by a factor of four.

Question 2

When a sample of water at 0.0C is cooled to -36.0C and freezes in the process, 935,000 kJ of heat is liberated.
 
  What is the mass of this sample of water? For water LF = 334,000 J/kg, LV = 2.256  106 J/kg, and the specific heat of ice is 2050 J/kg  C.
  A) 2290 kg
  B) 1145 kg
  C) 2800 kg
  D) 12,700 kg



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Answer to Question 1

D

Answer to Question 2

A



tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
Both answers were spot on, thank you once again



Ksh22

  • Sr. Member
  • ****
  • Posts: 297

 

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

For a complete list of videos, visit our video library