Equations

Question 1

Circular Motion: Centripetal Acceleration, a =

Answer 1

v²/r

Question 2

Circular Motion: Velocity, v =

Answer 2

2πr/T

Question 3

Torques: Angular Momentum, L =

Answer 3

mvr

Question 4

Springs: Force, F =

Answer 4

kx

Question 5

Springs: Potential Energy, Ep =

Answer 5

1/2kx²

Question 6

SHM: Time Period of spring, T =

Answer 6

2π√m/k

Question 7

SHM: Time Period of pendulum, T =

Answer 7

2π√l/g

Question 8

Gravity: Gravitational Force, F =

Answer 8

Gmm/r²

Question 9

Electric Fields: Electric force between two charges, F =

Answer 9

kqq/r²

Question 10

Electric Fields: Electric force on charge placed in electric field, F =

Answer 10

qE

Question 11

Electric Fields: Electric field due to a charge, E =

Answer 11

kq/r²

Question 12

Electric Fields: Electric potential energy for two charges, Ue =

Answer 12

kqq/r

Question 13

Electric Fields: Potential difference between two points, ΔV =

Answer 13

-W/q = Electric potential/q

Question 14

Electric Fields: Electric potential due to a charge at a distance from the charge, V =

Answer 14

kq/r

Question 15

Electric Fields: Electric field between two large plates of metal, E =

Answer 15

v/d

Question 16

Magnetic Fields: Force on a wire carrying a current immersed in a magnetic field, F =

Answer 16

IlBsinθ

Question 17

Magnetic Fields: Force on a charge travelling through a magnetic field, F =

Answer 17

qvBsinθ

Question 18

Waves: Magnification, m =

Answer 18

-image/object

Question 19

Heat: Change in heat, Q =

Answer 19

ml

Question 20

Heat: Change in internal energy, ΔU =

Answer 20

Q - W

Question 21

Heat: Efficiency of heat engine, Eeng =

Answer 21

W/Qhot * 100

Question 22

Relativity: Relativistic Factor, γ =

Answer 22

1/√1-(v/c)²