Brainliesme : )

how many electrons can be held in the energy level n = 4?

ANSWER: 32

Explanation: i think is 32 because s have 1 orbital p has 3 d has 5 and f has 7 add them all up we got 16 orbitals  each orbitals can contain 2 electrons

16 times 2 we got 32 electrons.

not 100%percent sure because some people told me the answer is 16.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied