acceleration = change in velocity/change in time = 45-15 / 2
=30/2 = 15 m/s
Answer:
A. John Tyndall
Explanation:
In 1887, John Tyndall confirmed the theory of <u>biogenesis</u>, formulated by Luis Pasteur in 1864, applying sterilization by <u>discontinuous heating</u>, a process that is currently known as tyndalization. Evidence of the existence of resting microbacterial forms, very resistant to heat.
Thanks to this demonstration he is recognized as the <em>father of microbiology</em> with Pasteur. The theory brought down the previous idea of the Spontaneous Generation, which remained in force since 1745.
Answer:

Explanation:
Given:
- depth of fish,

- angle of incidence,
- refractive index of water,

<u>Apparent distance from the normal projection at the bottom of entrance at air-water surface to the fish:</u>



<u>Now according to Snell's Law:</u>



<u>Now the actual distance of the fish from the bottom surface at the normal:</u>



<u>Now distance between bullet hole and fish</u>:


