Pressure

 Pressure is equal to....

• Force/Surface
• Volume/Time
• Force/Density
• Force times gravity

An elephant weighs 6000N. The total area of feet is 0.2m². What is the pressure?

• 30000 Pa
• 15000N/m²
• 1200N
• 20000Pa

A force of 20 N acts over an area of 4m². Calculate the pressure

• 80 Pa
• 5 Pa
• 80 N
• 5 N

Calculate the pressure exerted by the block at the bottom, knowing that its mass is 20000g and its measures are A = 10.0cm, B = 5.0cm, C = 8.0cm

• 0,4 Pa
• 25 Pa
• 250 Pa
• 20 Pa

Which is the force made on the piston?

• 400 N
• 100 N
• 40 N
• 1000 N

Which is the liquid height on the right column ?
(d_A = 700 kg/m³; d_B = 1000 kg/m³)

• 20 cm
• 23 cm
• 26 cm
• 28 cm

Calculate the pressure at the bottom of this container filled with water

• 3,85 N
• 1960 Pa
• 196000 Pa
• 49000 Pa

Calculate the maximum mass that a hydraulic pump can raise when a force of 300 N is applied on the smallest piston. The surfaces of pistons are 0,3 dm² and 1,5 m².

• 15306 kg
• 150000 N
• 150000 kg
• 30000 kg

A car sinks into a river till 5 meters deep. Calculate the pressure that supports its surface.

• 98000 N
• 49000 N
• 49000 Pa
• 98000 Pa