Author Question: Why can't current theories describe what happened during the Planck era? A) We do not know how ... (Read 57 times)

lindiwe

  • Hero Member
  • *****
  • Posts: 577
Why can't current theories describe what happened during the Planck era?
 
  A) We do not know how hot or dense the universe was during that time.
  B) We do not understand the properties of antimatter.
  C) We do not yet have a theory that links quantum mechanics and general relativity.
  D) The Planck era was the time before the Big Bang, and we cannot describe what happened before that instant.

Question 2

Which Galilean moon of Jupiter is volcanically active?
 
  A) Io
  B) Europa
  C) Ganymede
  D) Callisto



kalskdjl1212

  • Sr. Member
  • ****
  • Posts: 353
Answer to Question 1

C

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

For a complete list of videos, visit our video library