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

Author Question: Which one or ones of the following forces extend over macroscopic distances? A) the gravitational ... (Read 121 times)

bobypop

  • Hero Member
  • *****
  • Posts: 539
Which one or ones of the following forces extend over macroscopic distances?
 
  A) the gravitational force
  B) the electromagnetic force
  C) Both of the above.
  D) the strong force
  E) all three: electromagnetic, gravitational, and strong

Question 2

A hunter points a rifle horizontally and holds it 3.30 m above the ground. The bullet leaves the barrel at 325 m/s. Ignore air and assume that free-fall acceleration is 9.80 m/s2.
 
  (a) How long does it take for the bullet to strike the ground? (b) How far horizontally does it travel?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

coyin

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

C

Answer to Question 2

(a) 0.821 s (b) 267 m





 

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

For a complete list of videos, visit our video library