Answer:
90°
Explanation:
The angle will be 90° when momentum for a system can be conserved in one direction while not being conserved in another.
The example can be
If we apply force on an object horizontally in west direction, then as in other direction south or north we cannot apply the principal of momentum conservation.
Answer:
Each piece will have a north pole and a south pole
Explanation:
Well formation of metallic bond depends on free electrons.smaal sized atoms hold their electrons more firmly as compared to large size atoms ,this z due to distance of outer shell electrons by nucleus..in this way no of free electrons affect strength of metallic bond..smaal sized atoms release less free electrons..
Answer:
Explanation:
Energy E is conserved:

If v₀ = 22m/s, h₀=0m and h₁=25m:

Solving for v₁:

There is no real solution, because the stone never reaches 25m.
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