Pressure

In which one the ballon will burst for sure

• With a small force on a nail

• on many nails with a small force

• On many nails with a big force

• On a single nail with a big force

Check true one about pressure

• If you doubled the area you doubled pressure

• Pressure will be halved if you halved the arae

• Pressure is tripled if you doubled the force

• Pressure is doubled if you halved the area

Which information is not correct about the pressure?

• When you dive into water, pressure increases because the amount of water increases above us

• Barometer shows smaller values up to the peak of a mountain

• Water flows from high pressure to low until the pressures are equal

• The pressure of atmosphere increases when you rise in air

Which one gives the true formula for pressure

•  $P=F\times A$  

•  $P=\frac{F}{A}$  

•  $P=\frac{A}{F}$  

•  $P=\frac{F^2}{A}$  

SAME box different orientation, which one has big pressure

• 
• 
• 

Convert 0.5 atm to cm-Hg

• 76 cm-Hg

• 0.38 cm-hg

• 38 cm-Hg

• 380 cm-Hg

check all true information about the figures

• same pressure acts to the bottom

• The middle one has the least pressure at the base

• Since they have same density and same height they have the same pressure

• Pressure is independent of the shape of the container

If the pressure acting on a nail is 20000 pa to the area of 4 cm^2. Which one is the force exerted on the nail?

• 0.8 N

• 10 N

• 8 N

• 50 N

Which one has higher pressure?

• Gas 1

• Gas 2

Pressure of gas is in cm-Hg

• 56

• 96

• 120

• 76