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Dmitrij [34]
3 years ago
9

Algm pode me ajudar??

Physics
1 answer:
sladkih [1.3K]3 years ago
3 0

Answer:

add them

and then divide and then quit the maht departmeny

s

d

sd

sd

Explanation:

s

ad

asd

w

d

sd

cg

fgf

erf

be

brb

br

brb

rb

r

brb

rbr

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By evaluating their dot product, find the values of the scalar s for which the two vectors ~b = ˆx + syˆ and ~c = ˆx−syˆ are ort
AlladinOne [14]

Answer:

s=\pm 1

Explanation:

The dot product of two vectors \vec{a}=a_1\vec{x}+b_1\vec{y} and \vec{b}=a_2\vec{x}+b_2\vec{y} is given by

\vec{a}\cdot\vec{b}=a_1\cdot a_2+b_1\cdot b_2

The dot product of two orthogonal vector is always zero thus if \vec{a}=\vec{x}+s\vec{y} and \vec{b}=\vec{x}-s\vec{y}, their dot product would be

\vec{a}\cdot\vec{b}=1\times1+s\times-(s)=1-s^2=0

\implies 1-s^2=0

\implies s^2=1

\implies s=\pm 1

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3 years ago
What kind of friction exists between solid objects moving in water?
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3 years ago
Read 2 more answers
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Answer:

An opposing force caused by friction produced a lower acceleration than calculated.

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