The speed of a wave in a uniform medium doesn't depend on its wavelength.
Answer:
v =163.95 m/s
Explanation:
Given that,
The wavelength of wave, 
Distance covered, 
We need to find the speed of the wave. We know that,
speed = distance/time
So,
So, the speed of the wave is equal to 163.95 m/s.
the position that has least kinetic energy is option D
Answer:
12
Explanation:
The number of electrons in an atom is always the same as the number of protons, so atoms are electrically neutral overall.
Atoms can lose or gain electrons. When they do, they form charged particles called ions:
if an atom loses one or more electrons, it becomes a positively charged ion
if an atom gains one or more electrons, it becomes a negatively charged ion
Hope this helps
Answer:
4 decreasing energy of a closed system
