Answer:
3.) 12
Explanation:
an atomic number is 11 which means this atom will have 11 protons. the atomic mass is 23 which also means 23-11 is 12 neurons.
Your value for a Roman cubitus is incorrect. It is actually equivalent to
<em>0.445m not 0.554m</em>.
The answer to your question is 4.99cubiti or 5 cubiti (if rouded-off).
Here is why:If you round-off your answer then your answer will be
5 cubiti.
Answer:
A)friction
Explanation:
The friction of air resistance slows down the acceleration due to gravity for real-world objects.
Air resistance is a form of friction found in atmosphere.
Frictional force is a force that opposes the motion of a body. It acts in the opposite direction of motion. Friction slows down real-world objects moving through the air.
Without friction, motion will not be possible.
Ek= 1/2mv²
200=1/2 m(9 ²)
200=1/2(81)m
200=40.5m
m=200/40.5
m=4.93kg
Answer: 4.9 kg (second option)