A printed circuit board has eight different locations in which a component can be placed. If five identical components are to be
1 answer:
The number of possible designs that are achievable are= 56.
<h3>Calculation using combination</h3>The number of locations placed on the board,n = 8
The number of identical components, r = 5
The number of different designs that are possible can be calculated using the combination. This is because they are identical so the order in which they are selected does not matter.
The formula for combination =
That is
336/6 = 56
Therefore, the number of possible designs that are achievable are = 56
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Answer:
D) momentum of cannon + momentum of projectile= 0
Explanation:
The law of conservation of momentum states that the total momentum of an isolated system is constant.
In this case, the system cannon+projectile can be considered as isolated, because no external forces act on it (in fact, the surface is frictionless, so there is no friction acting on the cannon). Therefore, the total momentum of the two objects (cannon+projectile) must be equal before and after the firing:
But the initial momentum is zero, because at the beginning both the cannon and the projectile are at rest:
So the final momentum, which is sum of the momentum of the cannon and of the projectile, must also be zero: