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Lyrx [107]
3 years ago
13

The fictional rocket ship Adventure is measured to be 65 m long by the ship's captain inside the rocket.When the rocket moves pa

st a space dock at 0.5c. As rocket ship Adventure passes by the space dock, the ship's captain flashes a flashlight at 1.20-s intervals as measured by space-dock personnel.
Required:
How often does the flashlight flash relative to the captain?
Physics
1 answer:
kipiarov [429]3 years ago
8 0

Answer:

1.04 s

Explanation:

The computation is shown below:

As we know that

t = t' × 1 ÷ (√(1 - (v/c)^2)

here

v = 0.5c

t = 1.20 -s

So,

1.20 = t' × 1 ÷ (√(1 - (0.5/c)^2)

1.20 = t' × 1 ÷ (√(1 - (0.5)^2)

1.20 = t' ÷ √0.75

1.20 = t' ÷ 0.866

t' = 0.866 × 1.20

= 1.04 s

The above formula should be applied

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3 0
3 years ago
A 1.6 Kg bird that is flying through the air has 220 J of kinetic energy. How fast is the bird flying?
xxTIMURxx [149]

Answer:

v = 16.58 m/s

Explanation:

Given that,

Mass of a bird, m = 1.6 kg

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E=\dfrac{1}{2}mv^2

Where

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So,

v=\sqrt{\dfrac{2E}{m}}

Put all the values,

v=\sqrt{\dfrac{2\times 220}{1.6}}\\\\v=16.58\ m/s

So, the speed of the bird is equal to 16.58 m/s.

3 0
3 years ago
photon strikes the surface of tungsten and an electron is emitted. what is the maximum possible speed of the electron?
zalisa [80]

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K.E. = hν - Ф

½ mv² = hν - Ф

Hence the maximum possible speed is:

v = √2(  hν - Ф  ) / m

For more information on the photoelectric effect refer to this link: brainly.com/question/25027428

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The answer to the question is False i.e A phoneme is not the largest unit of sound.

EXPLANATION:

Phoneme is related to linguistics or the sound system of language which is the language specific.

It is defined as the smallest contrastive unit of sound in speech which can give a distinct meaning. It distinguishes one word from the other word in a unique way .When we put all the phonemes of a particular word, the corresponding word is formed .



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