The refractive index of the liquid is 1.52. The substance is a crown glass.
<u>Explanation:</u>
Given:
Velocity of light through the substance, v = 1.97 X 10⁸ m/s
Refractive index of the liquid, μ = ?
We know,
μ = 
where, c = velocity of light in air
v = velocity of light in the substance
speed of light in air is 3 X 10⁸m/s
Therefore, refractive index of the liquid is 1.52. The substance is a crown glass.
Answer:
Theta
Explanation:
Various emotions of a human being are controlled through communication between neurons. These communication occurs with the help brain waves generated by these neurons. There are various brain waves corresponding to different emotions.
Theta waves are associated with normal sleep. Their frequency lies in the range of 3 Hz to 8 Hz.
I'm tottaly agree with this answer: A full moon shows sunlight bouncing off the moon's surface and traveling toward Earth
The friction is 2.5N. The Net force is 10 N - 2.5 N .= 7.5 N.
acceleration = 7.5 / 5 = 1.5 m/s^2
