As elements in period are arranged according to increasing atomic weight with isotope as protium deuterium and trotium of h2 so chemical property are same but physical property different in period ic table
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Answer:
s = mV/2b
Assumptions: 1. the darts finally velocity is zero
2. The force being exerted on the dart by the block is constant and so the dart moves through the block with constant acceleration in the opposite direction. (Newton's second law)
3. Since the acceleration of the dart through the block is constant, then the equations of constant acceleration motion apply to the motion of the dart through the block.
Explanation:
Let a = acceleration of the dart through the block
V = velocity of the dart
m = mass of the dart
Vf = finally velocity of the dart
S = distance traveled by the dart through the block.
From Newton's second law of motion which states that the acceleration of a body is in the same direction as the net force acting on the body and is equal to the force divided by the mass. That is F = ma
Also F = -bv ........(1)
Therefore -bv = ma........(2)
From the equals of constant acceleration motion, Vf² = V² + 2aS
Vf = 0
0² = V² + 2aS
-2aS = V²
a = -V² / 2S
Substituting this expression for a in
Equation (2) above
-bV = m( - V²/2S)
On rearranging,
S = mV/2b
The answer is : B. allow for bonding metals to be stable. Metals, nonmetals all bond to be stable. Metallic bonding is the force of attraction between valence electrons and the metal ions.The electrons and the positive ions in the metal have a strong attractive force between them.
