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antiseptic1488 [7]
3 years ago
15

When a boat moves through the water, the waves in front of the boat bunch up, while the waves behind the boat spread out. this i

s an example of?
Physics
1 answer:
liberstina [14]3 years ago
8 0

Answer: Doppler Effect

Doppler Effect can be described as the change in wavelength of a wave like upward shift in frequency for an object whom is approaching and an apparent downward shift in frequency for observers from whom the source is receding. This effect can be observed when a boat moves through the water then the waves in front bunch up while the waves behind the boat spread out.

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Answer:

i hope this will help you :)

Explanation:

mass=19kg

density=800kg/m³

volume=?

as we know that

density=mass/volume

density×volume=mass

volume=mass/density

putting the values

volume=19kg/800kg/m³

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3 years ago
Suppose a 4,000-kg elephant is hoisted 20 m above Earth’s surface. Use a calculator and follow the steps below to find the eleph
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First list what you know. You know the elephants mass and it’s height. You also know gravity on Earth. I will use g = 9.81.
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