The flashcards below were created by user
Scottj
on FreezingBlue Flashcards.
A statement that describes the effect of movement on fluid pressure. According to this principle an increase in the speed of the motion of a fluid decreases the pressure with in the fluid.
Bernoulli's principle
The upward force on objects in a fluid.
buoyant force.. buoyancy
The elliptical path one celestial body follows around another celestial body.
orbit
The friction due to air.
air resistance
A property of matter representing the mass per unit volume.
density
Machines that use liquid to transmit or increase a force.
hydraulics
A substance that can flow easily such as a gas or liquid.
fluid
The statement that says that when an outside pressure is applied at any point to a fluid in a container that pressure is transmitted throughout the fluid with equal strength.
Pascal's principle
The force of gravity on objects.
weight
A force that resists the motion between two surfaces in contact.
friction
Called g and is equal to 9.8m/s2 at earths surface
acceleration due to gravity
A measure of how much force is acting on a certain area. How concentrated a force is.
pressure.... pressure is equal to the force divided by the area.
The force that objects exert on each other because of their masses.
gravity
On what two things does the strength of the gravitational force between two objects depend.
mass and distance
What would happen to gravitational pull if two planets were to drift apart from each other.
The gravitational pull would decrease
Compare the fall of an object that is dropped to that same object that is thrown forward.
They both fall at the same rate.. doesn't change its downward acceleration.
A person weighs himself on
Earth and the moon. How is their weight and mass affected?
The mass stays the same but the weight would be less on the moon because Earth has a greater pull than the moon.
How are friction and air resistance similar.
They both resistance motion
What happens to the frictional force to an object when you push it?
Once you over come the friction the friction force remains constant.
How do you increase the friction between two objects?
Double the force... use two hands
What does terminal velocity have to do with a skydiver?
How fast he falls
Why is artificial gravity hard to create?
.....
What is space adaption syndrome?
you feel sick and dizzy when they return to Earth.
What does space adaption syndrome cause?
dizziness and sickness
Explain Bernoulli's principle....
A statement that describes the effect of movement on fluid pressure. According to this principle an increase in the speed of the motion of a fluid decreases the pressure with in the fluid.
How can you apply Bernouli's principle to water flowing through pipes?
the faster the fluid the less pressure on the pipes.
How do you apply Bernoulli's principle to airplane wings?
Air flowing over the wing is faster than air flowing under the wing. This allows the plane to lift easier.
What happens to the force that is applied to a hydraulic jack?
it increases
Explain Pascal's principle
The statement that says that when an outside pressure is applied at any point to a fluid in a container that pressure is transmitted throughout the fluid with equal strength.