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physics > Module 3 Part 5: Thermodynamics > Flashcards

Module 3 Part 5: Thermodynamics Flashcards

1
Q

what the equation of the internal energy of a substance

A

Kinetic energy + Potential energy

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2
Q

what is the symbol of internal energy

A

U

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3
Q

what is the first law of thermodynamics

A

the change of internal energy is equal to the energy added or removed through heating/cooling minus work done by the system

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4
Q

what is the equation of the first law of thermodynamics

A

ΔU = Q - W

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5
Q

what is the symbol for heat energy

A

Q

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6
Q

what is the symbol for work

A

W

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7
Q

what is temperature

A

the measure of the average kinetic energy of the particles in a substance

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8
Q

what is the unit for thermal energy

A

joules (J)

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9
Q

what is law of thermal equilibrium

A

when two objects are in contact the thermal energy of the higher temperature object will be transferred to the cooler object until they reach the same temperature

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10
Q

what is the equation for changing temperature

A

Q = mcΔT

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11
Q

what is the symbol for mass

A

m

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12
Q

what is the symbol of specific heat capacity

A

c

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13
Q

what is the symbol for temperature

A

T

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14
Q

what is temperature measured in

A

Kelvin (K)

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15
Q

what is mass measured in

A

kg

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16
Q

what is specific heat capacity

A

the amount of energy required to change the temperature of 1 kg of a substance by 1 K

17
Q

what happens when the temperature of a substance plateaus on a graph

A

the state of the substance is changing

18
Q

why does energy plateau when changing states

A

the energy goes towards changing the arrangement of particles rather than increase average kinetic energy

19
Q

what is latent heat

A

the energy required to change the arrangement of particles within a substance when changing state

20
Q

what is specific latent heat of fusion

A

the energy required to change 1kg of a substance from from solid to liquid

21
Q

what is specific latent heat of vaporisation

A

the energy required to change 1kg of a substance from from liquid to gas

22
Q

what is the symbol for latent heat

A

L

23
Q

what is the equation for heat energy with latent heat

A

Q = mL

physics (10 decks)

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