Answer:
33.61°
Explanation:
Refractive index is equal to velocity of the light 'c' in empty space divided by the velocity 'v' in the substance.
Or ,
n = c/v.
v is the velocity in the medium (2.3 × 10⁸ m/s)
c is the speed of light in air = 3.0 × 10⁸ m/s
So,
n = 3.0 × 10⁸ / 2.3 × 10⁸
n = 1.31
Using Snell's law as:
Where,
is the angle of incidence ( 25.0° )
is the angle of refraction ( ? )
is the refractive index of the refraction medium (air, n=1)
is the refractive index of the incidence medium (glass, n=1.31)
Hence,
Angle of refraction = 
= 33.61°
Answer:
Energy is measured in JOULES.
Atoms and molecules are the fundamental building blocks of matter.
Explanation:
Matter is anything that has weight and occupies space. Locked within any given molecule or atom is some form of energy waiting to be activated. Energy can neither be created nor destroyed.
Answer:
0 N/C
Explanation:
Parameters given:
The distance between 
and 
is
Electric field is given as
r = 15/2 = 7.5cm = 0.075m
The electric field at their midpoint due to is:
= 
The electric field at the midpoint due to is:
= 
The net electric field will be:
E = +
E = 
+ 
E = 0 N/C
The centripetal acceleration of the car is 48,800 mi/h2
When an electric current flows, it produces magnetic field. The strength of the magnetic field depends on the amount of charge flowing per second. The direction of the magnetic depends on the direction of flow of electric current. So, the direction of magnetic field changes when the direction of current/charges changes.
