Answer:
One when it enters the glass slab from air and second time when it enters the air through glass slab. When light rays travelling through air enters glass slab, they get refracted and bend towards the normal. Now the direction of refracted ray changes again when it comes out of the glass slab into air.
For an object at equilibrium :
.option D: It might be stationary.
.option E: Fnetx must be zero, Fnetx can be anything.
What is equilibrium?
This refers to a state in which an object is at rest or balanced to the equal action of opposing forces.
At equilibrium, in the presence of external forces, the opposite forces normally have a balanced effect on the object in concern. Objects at equilibrium are known for their stable nature in terms of motion and energy.
Conditions for equilibrium
.The object must have no acceleration.
.The total force acting on the body i.e the net force and the net torque on the object must be zero.
Learn more about equilibrium on
brainly.com/question/29310847
#SPJ1
Answer:
See in explanation
Explanation:
Scientific use: The Einstein's THEORY of relativity states that "Time Is Absolute".
Everyday use: Einstein's LAW of relativity says that time is not the same at all places and events.
Answer:
work equal to Force times distance