Answer:
Q1: B.2 Q2: B.Waxing crescent Q3: A.Waxing Gibbous
Explanation:
Answer:
Most likely, it will be harder to get strong magnets to change phase because they have more density.
Answer:
a jet flying through the air making a paper airplane
The planets revolving around the sun, The moon revolving around the Earth.
Answer:

Explanation:
We need to find the energy for an electron to jump from n = 1 to n = 4.
The energy in transition from 1 state to another is given by :

The difference in energy for n = 1 to n = 4 is:

So, the required energy is equal to
.