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Flashcards in Equations Deck (116)
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1

Linear Motion Equations (5)

 

v = v0 + at

x = v0t + ½at2

v2 = v02 + 2ax

vavg = (v + v0)/2

x = (vavg)t

2

Static Friction

0 < fs < μsFN

3

Kinetic Friction

f= µkFN

4

SI Unit: Newton

(kg • m) / s2

 

5

SI Unit: Joule

N • m

6

Work

W = Fd cos θ

7

Power

P = W / Δt

8

Kinetic Energy

K = ½mv2

9

SI Unit: Watt

J / s

10

Newton's Third Law

Fb = -Fa

11

Newton's Law of Gravitation

F = (Gm1m2)/ r2

12

Centripetal Acceleration

ac = v2 / r

13

Centripetal Force

Fc = (mv2) / r

14

Total Mechanical Energy

E = U + K

15

Work - Energy Theorem

W = ΔE

16

Conservation of Energy

ΔE = ΔU + ΔK = 0

17

Thermal Expansion

ΔL = αLΔT

18

Volume Expansion

ΔV = βVΔT

if not given, estimate β = 3α

19

Heat Gained or Lost by an object (q)

q = mcΔT 

provided no phase change

20

Specific Heat (c)

c = q / mΔT

SI Units: cal / g•K

21

Heat of Transformation

Q = mL

provided with phase change

22

Adiabatic Process

Q = 0

ΔU = -W

23

Constant Volume

W = 0

ΔU = Q

24

Isothermal

ΔU = 0

Q = W

25

Density

ρ = m / V

26

SI Unit: Pascal

N / m2

27

Pressure

P = F / A

28

Weight

W = ρgV

29

Specific Gravity

ρsubstance / ρwater

 

ρwater = 10kg/m3 or 1 g/cm3

30

Pressure (of fluid with uniform density in a sealed vessel)

P = ρgz