Answer:
C-18
Explanation:
Step one follow order of operations
Add and subtract from left to right(-5)+(7)=2-(-4)+(12)
STEP 2
Apply negative Rule -(-4)=+4=2+4+(12)
then add 2+4+12=18
I’ll say the answer is d 160 g
Speed = distance / time
s = 550 / 4
s = 137.5 m/s
In short, Your Answer would be Option B
Hope this helps!
When the electrons are jumped from low to high energy level, energy is absorbed making them able to jump to a higher state. it cant be emission line produce because that's when energy is released but in this case, it's being absorbed. I would go with "energy is absorbed by the atom"