Please answer Q)1 & Q)2 A helium balloon ( helium density 0.2 kg/m3) has a volume of 0.0064 m3. If thedensity of air is 1.2816 kg/m3, what is the buoyant force exerted on the balloon?%3D A 11.5 N net force is applied for 5.4 s to a 9.9 kg box initially at rest. What is thespeed of the box at the end of this time interval?

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A helium balloon ( helium density = 0.2 kg/m³) has a volume of 0.0064 m3. If the density of air is 1.2816 kg/m3, what is the buoyant force exerted on the balloon? %3D

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section: Chapter Questions

Problem 32PQ

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Question

Please answer Q)1 & Q)2

A helium balloon ( helium density 0.2 kg/m3) has a volume of 0.0064 m3. If the
density of air is 1.2816 kg/m3, what is the buoyant force exerted on the balloon?
%3D

A 11.5 N net force is applied for 5.4 s to a 9.9 kg box initially at rest. What is the
speed of the box at the end of this time interval?

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