Find the pressure exerted by a 1500 N crate with an area of 6 square meters.
Remember: pressure = force / area
Unit: pascals
250 pascals
100
Why couldn't we flow the paper wad into the 2 liter soda bottle?
Blowing into the bottle creates pressure which prevents the paper wad from entering the bottle.
200
Find the pressure exerted by a 5000 N crate with an area of 10 square meters.
Remember: pressure = force / area
Units: pascals
500 pascals
200
Why did the most water come out of the lowest hole cut into the juice container?
Pressure increases with depth and since there was more pressure on the bottom hole, more water came out.
300
What is the density of a 900 cubic centimeter block with a mass of 500 grams?
Remember: denisty = mass / volume
Units: grams per cubic centimeters
0.55 grams per cubic centimeters
300
Why did the dropper (diver) sink when we squeezed the plastic bottle?
When we squeeze the bottle, pressure causes more water to enter in the dropper, increasing its density, and causing it to sink.
400
A 1092 gram fish displaces 420 cubic centimeters of water. What is the density of the fish?
Remember: density = mass / volume
Units: grams per cubic centimeters
2.6 grams per cubic centimeters
400
Why does a helium ballon float in the air.
A helium ballon floats because helium is less dense than the air outside the ballon.
500
An object weighs 60 N. It displaces a volume of water that weighs 25 N. Will the object sink or float?
Remember: density = mass / volume
Remember: Water = 1.0 gram per cubic centimeter
The object will sink.
500
Why were the two pieces of paper drawn together when we blew between them?
The speed of the air between the two paper creates a low pressure area causing the two pieces of paper to come together. (Bernoulli's Principle)