This question is about pressure.
Explain why wearing wide snowshoes prevents a hiker from sinking into deep, soft snow, whereas wearing standard hiking boots with small soles causes them to sink deep into the snow.
Large cylinders containing pressurized helium gas are used to inflate party balloons.
Using ideas about particles, explain why the pressure in the cylinder decreases as the helium is released to inflate the balloons.
A cylinder supplies 10 000 cm310\,000\text{ cm}^310000 cm3 of helium at a pressure of 2400 kPa2400\text{ kPa}2400 kPa. The volume of each inflated balloon is 4500 cm34500\text{ cm}^34500 cm3. The pressure exerted by the helium in each balloon is 160 kPa160\text{ kPa}160 kPa. Calculate how many balloons can be fully inflated using the helium from the cylinder. [Assume the temperature of the helium remains constant]