physics all equations

Question 1

word equation for voltage (multiplication)

Answer 1

Voltage (V) = current (A) × resistance (Ω)

Question 2

whats the symbol equation for current

Answer 2

𝐼 = Q/T

Question 3

what the word equation for current

Answer 3

Current (A) =
charge (C)
time (s)

Question 4

Symbol equation for avarage orbital speed

Answer 4

𝑣 = 2𝜋𝑟/𝑇

Question 5

word equation for average orbital speed

Answer 5

𝐴𝑣𝑒𝑟𝑎𝑔𝑒 𝑜𝑟𝑏𝑖𝑡𝑎𝑙 𝑠𝑝𝑒𝑒𝑑 (ms−1) =2 × 𝜋 × average radius of the orbit (m)
divided by
orbital period (s)

Question 6

symbol equation for gamma radiation

Answer 6

Gamma 𝑍𝑋
𝐴 → 𝑍𝑌
𝐴 + 𝛾

Question 7

symbol equation for beta radiation

Answer 7

Beta: 𝑍𝑋𝐴 → 𝑍+1𝑌𝐴 + −1𝑒0

Question 8

Symbol equation for alpha radiaition

Answer 8

Alpha: 𝑍𝑋𝐴 → 𝑍−2X𝐴−4 + 2𝐻𝑒 4

Question 9

word equation for voltage and current in transformers

Answer 9

Transformers:
voltage in the secondary coil (V)
voltage in primary coil (V)
=
current in the secondary coil (A)
current in primary coil (A)

Question 10

symbol equation for voltage and current in transformers

Answer 10

𝑉𝑠/𝑉𝑝=𝐼𝑠/𝐼𝑝

Question 11

word equation for voltage and turns of coil in transformers

Answer 11

Transformers:
voltage in the secondary coil (V)
voltage in primary coil (V)
=
turns on the secondary coil
turns on the primary coil

Question 12

symbol equation for voltage and turns of coil in transformers

Answer 12

𝑉𝑠/𝑉𝑝=𝑁𝑠/𝑁𝑝

Question 13

word equation for resistance (length)

Answer 13

Resistance (Ω) =
resistivity (Ωm) × length (m)
divided by
𝑎𝑟𝑒𝑎(m2)
Wires have a circular cross section, area = π × radius2

Question 14

Symbol equation for resistence (lenght)

Answer 14

𝑅= 𝜌 𝑙
———
𝐴

Question 15

symbol equation for resistors in a parallel

Answer 15

𝑅𝑡𝑜𝑡𝑎𝑙= 1/𝑅1+1/𝑅2+1/𝑅𝑛3

Question 16

energy transferred equation (power)

Answer 16

Energy transferred (J) = power (W) × time (s) W = Pt

Question 17

equation for resistors in series

Answer 17

Resistors in series: Total Resistance (Ω) = sum of individual resistors (Ω) Rtotal = R1+R2+R3+…Rn

Question 18

word equation for energy transferred ( involving current)

Answer 18

Energy transferred (J) = current (A) × voltage (V) × time (s)

Question 19

symbol equation for energy transferred (current)

Answer 19

W = IVt

Question 20

symbol equation for power (resistance)

Answer 20

P = I2 times R

Question 21

word equation for power (resistance)

Answer 21

Power (W) = current2 (A) × resistance (Ω)

Question 22

word equation for power(voltage)

Answer 22

Power (W) = current (A) × voltage (V)

Question 23

symbol equation for power (voltage)

Answer 23

P = IV

Question 24

symbol equation for voltage (multiplication)

Answer 24

V = IR

Question 25

Symbol equation for current

Answer 25

𝐼 =𝑄 /t

Question 26

word equation for current

Answer 26

Current (A) =charge (C) /time (s)

Question 27

word equation for refractive index (critical angle)

Answer 27

Refractive index =1 over sine of critical angle

Question 28

acceleration word equation

Answer 28

acceleration (ms−2) =final velocity (ms−1) − initial velocity(ms−1) /time (s)

Question 29

acceleration symbol equation

Answer 29

𝑎 =𝑣 − 𝑢 /𝑡

Question 30

word equation for weight

Answer 30

Weight (N) = mass (kg) × gravitational field strength (ms-2)

Question 31

symbol equation for weight

Answer 31

W = mg

Question 32

what is the gravitational field strength of the earth

Answer 32

Earth’s gravitational field strength = 9.8 ms-2 (as of 2023)

Question 33

word equation for force

Answer 33

Force (N) = mass (kg) × acceleration (ms-2)

Question 34

symbol equation for force

Answer 34

F = ma

Question 35

word equation for density

Answer 35

Density (kgm−3) =mass (kg) /volume 3

Question 36

symbol equation for density

Answer 36

𝜌 =𝑚/𝑉

Question 37

Hookes law symbol equation

Answer 37

Hooke’s law: Force (N) = constant (Nm-1) × extension (m)

Question 38

Hookes law symbol equation

Answer 38

F = kx

Question 39

pressure word equation (land)

Answer 39

Pressure(Pa) =Force (N) /area (m2)

Question 40

pressure symbol equation (land)

Answer 40

𝑃 =𝐹 /𝐴

Question 41

Fluid pressure symbol equation

Answer 41

Fluid Pressure (Pa) = density (kgm-3) × gravitational field strength (ms-2 or Nkg-1) × height (m)

Question 42

fluid pressure symbol equation

Answer 42

𝑃 = 𝜌𝑔ℎ

Question 43

word equation for work

Answer 43

Work (J) = force (N) × distance moved (m)

Question 44

symbol equation for work

Answer 44

W = Fd

Question 45

symbol equation for power (division)

Answer 45

𝑃 =𝑊 / 𝑡

Question 46

word equation for power (division)

Answer 46

Power (W) =work (J) /time (s)

Question 47

word equation for kinetic energy

Answer 47

Kinetic Energy (J) = ½ × mass (kg) × velocity2 (ms-1)

Question 48

symbol equation for kinetic energy

Answer 48

KE = ½mv2

Question 49

word equation for potential energy

Answer 49

Gravitational potential energy (J) = mass (kg) × gravitational field strength (ms-2 or Nkg-1) × height (m)

Question 50

symbol equation for GPE

Answer 50

GPE = mgh

Question 51

word equation for efficiency

Answer 51

Efficiency (%) = useful power output (W or J) total power input (W or J) × 100%

Question 52

symbol equation for effciency

Answer 52

𝜂 =𝑃𝑜𝑢𝑡 /𝑃𝑖𝑛 × 100%

Question 53

word equation for a moment

Answer 53

Moment (Nm) = Force (N) × perpendicular distance from pivot (m)

Question 54

symbol equation for a moment

Answer 54

M = Fd

Question 55

word equation of the sum of clockwise and anticlockwise moments

Answer 55

Sum of clockwise moments (Nm) = sum of anticlockwise moments (Nm)

Question 56

symbol equation of the sum of clockwise and anticlockwise moments

Answer 56

F1d1 = F2d2

Question 57

word equation for Boyle's Law

Answer 57

Boyle’s Law for changes in gas pressure at constant temperature : pressure1 (Pa) × volume1 (m3) = pressure2 (Pa)× volume2 (m3)

Question 58

symbol equation for Boyle's Law

Answer 58

P1V1 = P2V2

Question 59

word equation for specific heat capacity ( not in the form to find the specific heat capacity

Answer 59

Energy (J) = mass (kg) × specific heat capacity (Jkg-1°C-1) × temperature change (°C)

Question 60

symbol equation for specific heat capacity ( not in the form to find specific heat capacity

Answer 60

Q = mcθ

Question 61

word equation for wave speed

Answer 61

Wave speed (ms-1) = frequency (Hz) × wavelength (m)

Question 62

symbol equation for wave speed

Answer 62

V = fλ

Question 63

word equation for frenquency

Answer 63

Frequency (Hz) =1 /Period (s)

Question 64

symbol equation for frenquency

Answer 64

𝐹 =1 /𝑇

Question 65

word equation for Refractive index angles

Answer 65

Refractive index =sine of the angle of incidence, i sine of the angle of refraction, r

Question 66

symbol equation for refractive index angles

Answer 66

𝑛 =𝑠𝑖𝑛 𝑖 𝑠𝑖𝑛 𝑟

Question 67

word equation for refractive index (light speed)

Answer 67

Refractive index =speed of light in vacuum speed of light in material

Question 68

symbol equation for refractive index (light speed)

Answer 68

𝑛 =𝑐 /𝑣

Question 69

symbol equation for refractive index (critical angle)

Answer 69

𝑛 = 1 𝑠𝑖𝑛 c

Question 70

word equation for average velocity

Answer 70

Average velocity (ms−1) =displacement (m) /time (s)

Question 71

word equation for average speed

Answer 71

Average speed (ms−1) =distance (m) /time (s)

Question 72

symbol equation for average speed

Answer 72

𝑠 =𝑑 /𝑡

Question 73

symbol equation for average velocity

Answer 73

𝑣 =𝑥 /𝑡