A shower head has 15 circular openings, each with radius 1.0 mm. The shower head

Question

A shower head has 15 circular openings, each with radius 1.0 mm. The shower head is connected to a pipe with radius 0.90 cm. If the speed of water in the pipe is 3.8 m/s, what is its speed as it exits the shower-head openings?
____m/s

PART 2:

You are preparing some apparatus for a visit to a newly discovered planet Caasi having oceans of glycerine and a surface acceleration due to gravity of 4.80 m/s2. If your apparatus floats in the oceans on earth with 47.0% of its volume submerged, what percentage will be submerged in the glycerine oceans of Caasi?
___ %

Explanation / Answer

Area * velocity = constant

A1 V1 = A2 V2

pi R^2 * V1 = 15 * pi * r^2 * V2

3.14 * ( 0.9 *10^-2)^2 * 3.8 = 15 * 3.14 * ( 10^-3)^2 * V

V =6.53 m/s

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