A GUT (grand unified theory) refers to theories that A) unify ...

[washai]

A GUT (grand unified theory) refers to theories that
 
  A) unify the electromagnetic and weak forces.
  B) unify the strong force and the electromagnetic and weak forces.
  C) unify all four forces.
  D) unify gravity and the electromagnetic and weak forces.
  E) unify gravity and the strong and weak forces.

Question 2

Tidal friction caused by Earth's stretching from the Moon's gravity is gradually slowing down the rotation of Earth.
 
  Indicate whether the statement is true or false

[micaelaswann]

Answer to Question 1

B

Answer to Question 2

TRUE

[washai]

TYSM

[EAN94]

Gracias!