3 years ago

Properties of dot product

Physics

1 answer:

galben [10]3 years ago

8 0

-- it's a scalar quantity

-- it's never greater than the product of the magnitudes of the two vectors that form it

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A well-trained athlete can run 400m in 47s, what is the athlete’s velocity?

AnnZ [28]

Answer:

8.51 m/s

Explanation:

Velocity = Displacement/Time

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Velocity = 8.51 m/s

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2 years ago

3. A bottle of vitamin C contains 100 tablets and weighs 80 g. If the

Elan Coil [88]

Answer:

0.57g

20.52

28.5

Explanation:

The bottle weighs 80g with tablets

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To find 50 tablets we can use the same method we used before or a slightly faster method

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Answer:The television

Explanation:

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3 years ago

Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 2.4

NeX [460]

When person is observing destructive interference at 0.20 m distance from the equidistant position then we can say that path difference must be equal to half of the wavelength

now we will have

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now here we have

$\frac{\lambda}{2} = \frac{0.20\times 2.4}{10}$

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now frequency of wave is given as

$f = \frac{v}{\lambda}$

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Yes that is the correct answer

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