Different theories in science rely on the current available knowledge that has been obtained through a certain way of data collection/that has used certain technology to obtain such data. With new technology, new datasets can be obtained that perhaps are not in line with previous theories. By improving technology, new datasets can be obtained and through this theories can be advanced, improved and developed.
Answer:
The height of the drop is 3.24 m.
Explanation:
As the ball is dropped from a mystery height and it takes 0.9 seconds to hit the ground with the acceleration of 8 m/s2. Then the velocity with which the ball is thrown can be determined as

As the acceleration is 8 m/s2 and time is 0.9 s. Then

So we know, the velocity u = 7.2 m/s , acceleration a = 8 m/s2 and time taken to reach the ground as t = 0.9 s. Thus, the height of the drop will be equal to the displacement of the ball from the top to the ground. Thus with the help of second equation of motion, we can determine the height as height will be equal to displacement (s).

Thus,

Thus, the height of the drop will be 3.24 m.
Answer:
option 2
Explanation:
your gonna break 30k before even half way through the month so yeah option 2
Answer:
An atomic nucleus is positively charged because it is composed of protons
Explanation:
Protons carry positive charge and nucleus only contain protons