Physics: Atoy balloon, which has a mass of 2.90 g before it is inflated, is filled with helium (with a density of 0.180 kg/m^3) to a volume of 8400 cm^3. what is the minimum mass that should be hung from the balloon to prevent it from rising up into the air? assume the air has a density of 1.29 kg/m^3.

Atoy balloon, which has a mass of 2.90 g before it

Ответ:

Delqueen8956

11.01.2022

Physics

$M=6.4243\ g$

Explanation:

Given:

mass of deflated balloon, $m_b=2.9\ g=0.0029\ kg$ density of helium, $\rho_h=0.180\ kg.m^{-3}$ volume of inflation, $V=8400\ cm^3=0.0084\ m^3$ density of air, $\rho_a=1.29\ kg.m^{-3}$

To stop this balloon from rising up we need to counter the buoyant force.

mass of balloon after inflation:

m=m_h+m_b

$m=0.0084\times 0.180+0.0029$

$m=0.004412\ kg$

Now the density of inflated balloon:

$\rho_b=\frac{m}{V}$

$\rho_b=\frac{0.004412}{0.0084}$

$\rho_b=0.5252\ kg.m^{-3}$

Now the buoyant force on balloon

$F_B=V(\rho_a-\rho_b).g$

$F_B=0.0084(1.29-0.5252)\times 9.8$

$F_B=0.063\ N$

∴Mass to be hung:

$M=\frac{F_B}{g}$

$M=0.00642432\ kg$

$M=6.4243\ g$

0,0(0 оценок)

Ответ:

marelinatalia2000

17.03.2023

Physics

materials: solid dissolved in a liquid

independent variable: temperature

Explanation:

I got it right

0,0(0 оценок)

Atoy balloon, which has a mass of 2.90 g before it is inflated, is filled with helium (with a density of 0.180 kg/m^3) to a volume of 8400 cm^3. what is the minimum mass that should be hung from the balloon to prevent it from rising up into the air? assume the air has a density of 1.29 kg/m^3.

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Physics

Ask an AI advisor a question