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4 years ago

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In 1801, the Italian astronomer Giusseppe Piazzi discovered a large, rocky body orbiting the Sun. The body was surrounded by oth

er similar rocky bodies that traveled in the same orbit. What did Piazzi most likely discover? A. a moon B. an asteroid C. a comet D. a planet

1 answer:

Harrizon [31]4 years ago

7 0

Answer:

B. An asteroid

Hope this helped :)

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A fire hose 5 centimeters in diameter is used to fill a 225-liter bucket. If it takes 15 seconds to fill the bucket, what is the

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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 $dm^{3}$ .
$V=225dm^{3}$
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):
$A=3,14*\frac{d^{2}}{4}}=0,19625dm^{2}$

$225dm^{3}$ 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:
$V=A*h$
The speed of the water can be counted with equation:
$v=\frac{h}{t}$
After extracting h from the volume's equation you get:
$v=\frac{V}{A*t}$
When you count the fraction you get the answer:
$v=76,43\frac{dm}{s}=0,7643\frac{m}{s}$

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3 years ago

As a 5.0 x 102 N basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floo

s2008m [1.1K]

Here is your answer:

First find the notations:

5.0×10^2=500.
1.0×10^3=1,000

Then you multiply:

1,000×500=500,000

Your answer is...
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Answer:

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Explanation:

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