3 years ago

50 POINTS PLSS

Physics

1 answer:

Ostrovityanka [42]3 years ago

6 0

Answer:I think the answer is 5.43 I don’t rlly know

Explanation:

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A 4.0-kilogram object is accelerated at 3.0 meters

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6.0 m/s^2
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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

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

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3 years ago

If heat is transferred away from a gas, what could happen?

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<span>♦The gas may become a liquid as it loses energy♦</span>

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3 years ago

If it took 125 seconds to complete 5 wave cycles, what is the period of the wave?

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The period of the wave is 25 s

<u>Explanation:</u>

To find the period of the wave, we have the formula

T= seconds/ no of cycle

T= 125/5

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4 years ago

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Answer:

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