Author Question: A 3 kg mass is positioned at (0, 8), and a 1 kg mass is positioned at (12, 0). What are the ... (Read 23 times)

Pineappleeh

  • Hero Member
  • *****
  • Posts: 585
A 3 kg mass is positioned at (0, 8), and a 1 kg mass is positioned at (12, 0). What are the coordinates of a 4 kg mass which will result in the center of mass of the system of three masses being located at the origin (0, 0)?
 
  A) (-3, -6)
  B) (-6, -3)
  C) (3, 6)
  D) (-12, -8)

Question 2

When a light wave enters into a medium of different optical density
 
  A) its speed and frequency change.
  B) its speed and wavelength change.
  C) its frequency and wavelength change.
  D) its speed, frequency, and wavelength change.



flexer1n1

  • Sr. Member
  • ****
  • Posts: 373
Answer to Question 1

A

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

For a complete list of videos, visit our video library