Answer:
1) B
2) A, B, and D
Explanation:
1) The atomic number provides the number of protons and electrons, since the number of the two are the same.
2) You DO NOT know whether or not the protons are in the nucleus (they are) based on the atomic number, that's just prior knowledge.
Answer: In summary, work is done when a force acts upon an object to cause a displacement. Three quantities must be known in order to calculate the amount of work. Those three quantities are force, displacement and the angle between the force and the displacement.
Explanation:
Nuclear energy that what I think it is
Answer:
The left side of the equation i.e ∆p=MVo should be used
Explanation:
Momentum is the product of mass and velocity or the quantity of motion an object has.
Impulse is the change in momentum
If P is the momentum
If M is the mass of the object
Vo is the velocity of the object
∆p=P2-P1
Since the wall is stationary, P1 = 0
The momentum of the object itself is P2
Therefore, ∆p=P2
Since P2=MVo
∆p=MVo
X=ut+0.5at²
1000 = 63.3u + 0.5 * 0.0323 * 63.3²
u = (1000 - 0.1615*63.3²)/63.3
u = 5.57 m/s
i don't even know if this is correct