Energy

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31 Terms

1
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What are the 2 types of energy?
Kinetic and Potential
2
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What are the main examples of kinetic energy?
Thermal and sound
3
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What are the main examples of potential energy?
Gravitational and elastic
4
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What is thermal energy?
Energy that makes objects hot
5
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What is Sound energy?
Vibrations of particles
6
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What is gravitational energy?
Energy stored in an object due to its height and the ability of gravity to make it fall.
7
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What is Elastic energy?
Energy stored by bending, stretching or compressing
8
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What is energy?
Ability to do work
9
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What is work?
Process of transferring energy
10
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Calculation for work
W=FD or W=FDcos0
11
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J expanded is
Kgm^2/s^2
12
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If force and distance are same direction then….
Positive work
13
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If direction and force are opposite direction then…
Negative work
14
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If distance and force are at a 90 angle then…
No work.
15
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Calculation for Ek?
Ek=(1/2m)(v^2)
16
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Calculation for Eg?
Eg=(m)(g)(h)
17
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Calculation for Fs?
Fs=kx
18
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Calculation for Es?
Es=(1/2k)(x^2)
19
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What is conservation of mechanical energy?
(Eg+Ek+Es)initial=(Eg+Ek+Es)final
20
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What does the slope of an FD graph determine?
K
21
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What does the area of an FD graph determine?
Work done/energy stored
22
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What is heat?
Kinetic energy at atomic level
23
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What is temperature?
Average kinetic energy of all particles in a quantity.
24
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Calculation for heat transfer?
EH=(m)(c)(t2-t1)
25
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Heat captaincy of water?
4200J/kgC
26
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Calculation for heat exchange?
(EH)cold= -(EH)hot
27
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Calculation for latent heat of fusion?
Lf=EH/m
28
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Calculation for latent heat of vaporization?
Lv=EH/m
29
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Calculation for power?
P=W/T
30
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Power is measured in?
Watts (W)
31
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W expanded is…
Kgm^2/s^3