15.4 = -2.1 + a 0.2help pleasee
1 answer:
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Answer:
For n=6, the given vectors will be collinear.
Step-by-step explanation:
Collinear vectors are the vectors which lie on the same line or parallel lines. In order to find if two vectors are collinear, their ratio is found. If the ratio is same for all unit vectors then the vectors are collinear.
Given
The ratio of first unit vectors is:
In order for the vectors to be collinear the other ratio should also be 1/3
Writing it mathematically
Hence,
For n=6, the given vectors will be collinear.
Answer:
Cork: Less
Wood: About the same
Metal: More dense
Step-by-step explanation:
Whether or not a block floats inside water is dependent on its density. If it is floating, it means it has a lower density. If it is sinking, it means it has a higher density. If it has the same, it will be half under and half over.
Mathematically, specific gravity can be used to support this phenomenon.
*In this context, water is our reference and the blocks are our substances.
Since Boyancy force can be described (the weight of the fluid disperced), having a higher density p than the reference liquid inherently will cause a greater downwards force from gravity.