Answer:
The student is getting different info bc the students probable keeping track of the distance instead of the displacement.
Explanation:
Heat and light are released!
Answer: It takes the stone 7seconds in air and 5seconds in water
Explanation: complete question: How long did the stone fall in air and how long did it fall in the water?
total distance = sum of velocity * time for both legs of the journey;
let the time taken in air be t
hence time taken in water is 12-t
127 = 16*t + 3(12-t)
127 = 16t + 36 - 3t
127 - 36 = 16t - 3t
91 = 13t
t = 91/13 = 7 seconds
Hence time taken in air = 7 seconds
time taken in water is 12 - 7 = 5 seconds
Answer:
When a light ray impacts on a parallel mirror with an angle of incidence A compared with the normal to the surface of the mirror (this means a perpendicular line to the surface), the reflected light ray always is reflected with the same angle.
This means that if the light ray incident normally, the reflected ray will be reflected normally.
If the light ray insides from the bottom with an angle of 30°, the reflected ray will be reflected upwards with an angle of 30° (always measuring these angles from the normal of the surface of the mirror).
The three main parts of an atom are protons, neutrons<span>, and </span>electrons<span>. </span>Protons<span> - have a positive charge, located in the </span>nucleus<span>, </span>Protons<span> and </span>neutrons<span> have nearly the same mass while </span>electrons<span> are much less massive. </span>Neutrons<span>- Have a negative charge, located in the </span><span>nucleus</span>