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IB HL Physics > PHYSICS VOCAB > Flashcards

PHYSICS VOCAB Flashcards

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1
Q

What is the definition of scalar quantity?

A

Only takes into account magnitude (speed/distance)

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2
Q

What is the definition of vector quantity?

A

Takes into account magnitude & direction (displacement, velocity, acceleration)

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3
Q

What is the definition of displacement?

A

The length and direction of the straight line joining one point to another

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4
Q

What is the definition of velocity?

A

The distance divided by time

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5
Q

What is the definition of Newton’s Third Law?

A

If body A exerts a force on body B, then body B will exert an equal force on body A

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6
Q

What is the relationship between kinetic and potential energy?

A

Kinetic energy can not reach potential energy

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7
Q

What is the definition of Conservation of Momentum?

A

Dealing with a closed system (no external forces), momentum of the system is equal to the momentum at any point (remains constant).

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8
Q

What is the definition of static fluids?

A

Fluids that are not moving and have density & pressure

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9
Q

What is the definition of ideal fluids?

A

Fluids that have no internal friction (viscosity) and are incompressible.

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10
Q

What is the definition of Internal Energy?

A

The sum of the intermolecular potential energy and the random kinetic energy of the particles.

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11
Q

What is the definition of Heat Energy?

A

The energy that is transferred when a hot object looses energy to a cold object.

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12
Q

What is the definition of Temperature?

A

A measurement of the average kinetic energy of the particles.

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13
Q

What is the definition of Specific Heat Capacity?

A

The amount of energy required to raise the temperature of 1kg of a substance 1K.

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14
Q

What are Ideal Gas Particles?

A

Ideal gas particles are in random motion, collide perfectly in elastic collisions, are ideal very small, sphere and have no intermolecular attraction.

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15
Q

What is Thermodynamics?

A

The conservation of energy applied to ideal gas systems.

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16
Q

What is isothermic?

A

Same temperature

17
Q

What is isochoric?

A

Same volume

18
Q

What is isoboric?

A

Same pressure

19
Q

What is the area under a pressure volume graph?

A

Work

20
Q

What is the definition of Adiabatic?

A

When no heat is exchanged between the system and the surroundings (Q=0)

21
Q

What is the definition of Entropy?

A

The dispersal of energy in a system and is sometimes modelled as disorder in a system.

IB HL Physics (1 decks)

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