I'm only adept in atomic makeup but my guess would be 13 electrons since they have a negative charge and protons have a positive one.
Answer: A. Scott and Karla
Explanation: Velocity includes speed AND direction.
When boat is sunk into the liquid the net buoyancy on the boat is counterbalanced by weight of the boat
So here weight of the boat = Buoyancy force
let say boat is sunk by distance "h"
now we can say


now by above force balance equation we can write




so boat will sunk by total 5 mm distance
Answer:
The answer is "
".
Explanation:
Formula for calculating the mass in He:


Formula for calculating the mass in
:


by using the temperature balancing the equation:

