Refraction occurs when a wave enters a new medium and changes its speed.
i hope this helps
Answer:
1176 Nm or J
Explanation:
W = F*d
F = 60kg * 9.8 kgm/s^2 = 588 N
W = 588 N * 2m = 1176 N*m
An electron is emitted in both positive and negative beta decay, although the positive one is called positron emission.
They can pretty much be by water i think
