When an object moves away from Earth, its light waves are stretched to a lower frequency, or longer wavelength, and thus we say
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I believe you ask about speed at the end of the hose:
The volume of the bucket is 225 liters which is equal to 225
.
Hose's cross section can be counted with the typical circle's area formula (with diameter instead of radius, that's why you've got a fraction):
are filled within 15 second.
As the bucket is being filled you can say that it's volume is the volume of the water that flowed out of the hose, then:
The speed of the water can be counted with equation:
After extracting h from the volume's equation you get:
When you count the fraction you get the answer:
The volume of the bucket is 225 liters which is equal to 225
Hose's cross section can be counted with the typical circle's area formula (with diameter instead of radius, that's why you've got a fraction):
As the bucket is being filled you can say that it's volume is the volume of the water that flowed out of the hose, then:
The speed of the water can be counted with equation:
After extracting h from the volume's equation you get:
When you count the fraction you get the answer: