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

Author Question: Is the moon accelerated? A) No, because there is no gravity in space. B) No, because the ... (Read 32 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
on: Jul 29, 2018
Is the moon accelerated?
 
  A) No, because there is no gravity in space.
  B) No, because the gravitational force on it is balanced by the centrifugal force.
  C) Yes, its acceleration is directed forward, along its direction of motion.
  D) Yes, its acceleration is directed inward toward Earth.
  E) Yes, its acceleration is directed outward away from Earth.

Question 2

A metal having a work function of 2.8 eV is illuminated with monochromatic light whose photon energy is 3.9 eV. What is the threshold frequency for photoelectron production? (h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J)
 
  A) 6.8  1014 Hz
  B) 2.7  1014 Hz
  C) 7.6  1014 Hz
  D) 8.5  1014 Hz
  E) 9.4  1014 Hz


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

josephsuarez

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

A


sheilaspns

  • Member
  • Posts: 567
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

A crescent Moon and "star" A crescent Moon and "star"
Gravity Gravity
Moon Moon
Moon Moon
Moon Moon
A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass ... A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass ...
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

For a complete list of videos, visit our video library