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Vesna [10]
2 years ago
11

19. Arrange from smallest to largest: the BTU, the joule, and the calorie.

Physics
1 answer:
Papessa [141]2 years ago
5 0

Answer: Don't know sorry

Explanation:

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One hazard of space travel is the debris left by previous missions. There are several thousand objects orbiting Earth that are l
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Answer:

F = 6666.7 N

Explanation:

Given that,

Mass of a chip, m = 0.1 mg

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We know that,

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Put all the values,

F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{0.1\times 10^{-6}\times (4\times 10^3-0)}{6\times 10^{-8}}\\\\F=6666.7\ N

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3 years ago
The siren on an ambulance emits a sound of frequency 2.80×103Hz. If the ambulance is traveling at 26.0 m/s (93.6 km/h or 58.2 mi
Norma-Jean [14]

To solve this problem it is necessary to apply the concepts related to the described wavelength through frequency and speed. Mathematically it can be expressed as:

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Where,

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Our values are given as,

f = 2.8*10^3Hz

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Keep in mind that we do not use the travel speed of the ambulance because we are in front of it. In case it approached or moved away we should use the concepts related to the Doppler effect:

Replacing we have,

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Therefore the frequency that you hear if you are standing in from of the ambulance is 0.1214m

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