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Yuki888 [10]
3 years ago
5

There is no sound in the vacuum of space. Why? Sound must travel through something that vibrates. There is no energy in space. T

here is no air to vibrate the human eardrum. Space is too full of light energy.
Physics
1 answer:
Blababa [14]3 years ago
3 0

Sound must travel through a medium/body. Space is a vacuum so there is no medium/body for sound to travel through, so there is no sound.

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A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?
crimeas [40]

Answer:

Wavelength λ = 7.31 × 10^-37 m

Explanation:

From De Broglie's equation;

λ = h/mv

Where;

λ = wavelength in meters

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v = velocity in m/s

Given;

v = 24 mi/h

Converting to m/s

v = 24mi/h × 0.447 m/s ×1/(mi/h)

v = 10.73m/s

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λ = (6.626×10^-34 m^2 kg/s)/(84.5kg × 10.73m/s)

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7 0
3 years ago
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liubo4ka [24]

Answer:

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7 0
2 years ago
The Michelson-Morley experiment was designed to measure Group of answer choices the velocity of the Earth relative to the ether.
NISA [10]

Answer:

The Michelson-Morley was designed to detect the motion of the earth through the ether.

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4 0
3 years ago
If the car has a mass of 0.4 kg, the ratio of height to width of the ramp is 19/85, the initial displacement is 1.9 m, and the c
Rasek [7]

Answer:

final displacement lf  = 0.39 m

Explanation:

from change in momentum equation:

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\delta p = 1.27 kg*m/s.

putting all value to get the final displacement value

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