The atomic number of Na is 11
Thus it’s electronic configuration is 2,8,1
It’s valency is 1.
Thus it will loose an electron to form a stable compound with a completely filled outermost shell.
Na looses 1 electron
Answer:
The mass of the rod is 16 kg.
Explanation:
Given that,
The length of a rod, L = 3 m
The moment of inertia of the rod, I = 12 kg-m²
We need to find the mass of the rod. The moment of inertia of the rod of length L is given by :
Where
M is mass of the rod
So, the mass of the rod is 16 kg.
Answer:
-2.33 m/s²
Explanation:
The computation of the skateboarder’s acceleration is shown below;
Acceleration means the change in velocity per unit with respect to time.
In the given case, the initial velocity is 7 m/s.
As in the question it is mentioned that it comes to a stop, so the final velocity would be zero.
And, The time elapsed is 3 seconds.
Now the following equation should be used
a = (v,final - v,initial) ÷ t
= (0 - 7)/3
= -2.33 m/s²
Answer:
58.5 deg
Explanation:
= mass of the pig toy = 0.30 kg
= speed of the toy = 2 m/s
= radius of the circle = 0.25 m
= Angle of the string with the vertical = ?
= Tension force in the string
Using equilibrium of force in vertical direction
eq-1
Along the horizontal direction, the component of tension force provides the necessary centripetal force, hence
eq-2
Dividing eq-2 by eq-1
= 58.5 deg
All except for one tom of the element with different number of neutron
