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IB Physics HL > Option B3 > Flashcards

Option B3 Flashcards

Fluids and fluid dynamics

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1
Q

What is the formula of

calculating density?

A
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2
Q

What is the formula of

calculating Pressure?

A
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3
Q

How to determine pressure of a gas

by a manometer?

A
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4
Q

What is Buoyant force?

A

Buoyant force is

the upward force of a fluid

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5
Q

State

Archimedes’ principle

A
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6
Q

What is the relationship

between

weight of object and buoyant force?

A

If weight of object > buoyant force => object sinking down

If weight of object < buoyant force => object floating up

If weight of object = buoyant force => object not moving (or floating) => hydrostatic equilibrium

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7
Q

State

Pascal’s principle

A
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8
Q

What is

Hydrostatic equilibrium?

A
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9
Q

Define the ideal fluid

A

Ideal fluids will be taken to mean fluids that are incompressible and nonviscous and have steady flows

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10
Q

What is Streamlines?

A

A streamline is an imaginary line that represents the path of fluid particles

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11
Q

What is

The continuity equation?

A
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12
Q

State the

The Bernoulli equation

A
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13
Q

What is The Bernoulli effect?

A
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14
Q

Define

Viscosity and Viscous Drag

A

Viscosity is a fluid’s resistance to flow.

Viscous Drag = the frictional force present when a solid object moves through a liquid

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15
Q

State

Stokes’ law

A
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16
Q

State the difference in terms of the velocity of the water between laminar and turbulent flow.

A

In laminar flow, the velocity of the fluid is constant at any point in the fluid whereas it is not constant for turbulent flow

17
Q

What is

a Laminar flow?

A

Laminar flow is

– a fluid moves smoothly and is predicable

- the velocity is constant at any point in the flow

- also known as streamline flow which only occurs in low flow rate

18
Q

What is

a Turbulent flow?

A

Turbulent flow is

- a fluid moves chaotically and is hard to predict regarding its motion

- the velocity of flow is not constant

- occurs in high flow rate

19
Q

What is

Reynolds numbe?

A

Reynolds number is a value to determine whether a flowing fluid is a laminar or a turbulent flow

20
Q

What is the formula

of calculating Reynolds numbe?

A
21
Q
A

IB Physics HL (4 decks)

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