This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Thousands of years ago, after humans began settling in villages, their settlements were energized by ... (Read 135 times)

joesmith1212

  • Hero Member
  • *****
  • Posts: 549
on: Jul 29, 2018
Thousands of years ago, after humans began settling in villages, their settlements were energized by
 
  A) gravitational energy.
  B) thermal energy.
  C) nuclear energy.
  D) chemical energy.
  E) radiant energy.

Question 2

Enzo throws a rock horizontally with a speed of 12 m/s from a bridge. It falls for 2.28 s before reaching the water below. Ignore air. Just as the rock reaches the water, find (a) the horizontal component of its velocity.
 
  (b) the speed with which it is moving.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

alexisweber49

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 29, 2018
Answer to Question 1

E

Answer to Question 2

(a) 12 m/s (b) 25 m/s


joesmith1212

  • Member
  • Posts: 549
Reply 2 on: Jul 29, 2018
:D TYSM

hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Possible Earth 5 billion years from now Possible Earth 5 billion years from now
All living apes possess rotating, suspensory shoulders, including humans. All living apes possess rotating, suspensory shoulders, including humans.
The S-curve in the human vertebral column--a result of the evolution of bipedality--makes humans hig The S-curve in the human vertebral column--a result of the evolution of bipedality--makes humans hig
Adolescence: 12 years or puberty to the beginning of adulthood. Adolescence: 12 years or puberty to the beginning of adulthood.
Review Cognitive Changes over the Adult Years Review Cognitive Changes over the Adult Years
How humans maintain homeostasis with respect to water and ions How humans maintain homeostasis with respect to water and ions
Video: Contraction cycle of a sarcomere

For a complete list of videos, visit our video library