Physics Formula

Question 1

Motion and acceleration - kinematic equations

Answer 1

VAT
VAX
TAX-TVAX

Vf = Vo + at

Vf2 = Vo2 + 2ax

X = Vot + at2/2

X = avg V t

Question 2

Projectile motion

Answer 2

Sin angle = Vy/V

Cos angle = Vx/V

Question 3

Inclined plane formulas

Answer 3

Fgx = mass x g x sin angle

Fn = mg cos angle

Question 4

Circular motion:

Centripetal acceleration and force

Answer 4

Ac = V2 / r

Fc = m v2/r

Question 5

Force formula

Answer 5

F = ma

Question 6

Torque formula

Answer 6

T = r f sin angle

Question 7

Sin 90 / cos 90

Sin 0 /. Cos 0

Answer 7

1 / 0

0 / 1

Question 8

Kinetics formula?

Answer 8

K = 1/2 m v2

Question 9

Potential energy formula

Answer 9

U = mgh

Question 10

Elastic potential energy formula

Answer 10

U = 1/2k x2

Question 11

What is work? Formula?

Answer 11

Process by which energy is transferred

W = Fdcos angle

W = pressure / volume change

Question 12

Power - and formula

Answer 12

Rate at which energy is transferred:

P = W/ time

Question 13

Thermal expansion formulas

Answer 13

Change in L = alpha * L * Change in time

Change in volume = Beta * v *change in time

Question 14

Exchange of heat

Answer 14

Q = m c change in T

Question 15

Hydrostatics?

Answer 15

Pascals principle:

F1D1 = F2D2

Question 16

Buoyancy

Answer 16

If density of object is more than of fluid, object sinks

Fb = densityfluid * volume * g

Question 17

Continuity equation

Answer 17

V1A1 = V2A2

Question 18

Electrostatic force

Answer 18

Fe = k Qq/ r2

Direct correlation with magnitude of charge, inverse square with distance

Question 19

Electric potential

Answer 19

E = Fe/q
OR

E = KQ/r2

Question 20

Electric potential energy

Answer 20

U = kQq/r

Question 21

Electric potential

Answer 21

V = kQ/r

Question 22

Magnetic field and Fore
In straight line
In circular loop

Answer 22

Straight line:

B = Uo I/2pie r

Loop:

B = Uo I /2r

Question 23

Magnetic forces

Answer 23

On moving charges:
Fb = q * v * B sin angle

On current carrying wire:

Fb = I * L * B sin angle

Question 24

current formula

Answer 24

I = Q/delta T

Question 25

Resistance formula

Answer 25

R = résistivité * Length/Area

Question 26

Electric potential = voltage drop

Formula

Answer 26

V = I*R

Question 27

Power in current?

Answer 27

P = I * V
= I2*R
= V2/R

Question 28

R in series vs in parallel

Answer 28

Series:
Added to find total resistance - increases with increasing resistance

In parallel:
1/R - decreases with increasing # of resistors

Question 29

Voltage drop in series:

Answer 29

Is equal to voltage drop in each resistor added

Question 30

Capacitance

Answer 30

C = Q/V

C = Eo (A/d)

Question 31

Electric field in capacitance

Answer 31

E = V/d

Question 32

Potential energy in capacitance

Answer 32

U = 1/2cv2

Question 33

Concave in mirror vs. Lens

Answer 33

Concave mirror are converging mirrors

Concave lens are diverging lens

Question 34

Focal length with mirrors

Answer 34

1/f = 1/o + 1/i = 2/r

Question 35

Index of refraction

Answer 35

N = c (speed of light) / V (speed of light in other medium)

C is always > than v

Angle of refraction is bigger when going from larger n (index of refraction) to smaller n

Question 36

Absolute pressure

Answer 36

Pa = Pg (gauge pressure) + Patm

Question 37

Gauge pressure

Answer 37

Pg = Pa (absolute pressure) - Patm

Question 38

Pressure

Answer 38

Force / area

Question 39

Relationship of pressure volume and temp

Answer 39

PV = nRT

Question 40

Pascale’s principle of pressure

Answer 40

P = F/A = F/A