IGCSE Physics equations

What is the correct equation for refractive index

• n = sinr / sini

• n = sini / sinr

• c = sini / sinr

• Sinc = sini / sinr

What is the correct equation for acceleration

• a = (v - u) / t

• a = d / t

• a = f x m

Tags

NGSS.HS-PS2-1

What is the correct equation linking force mass and acceleration

• F = ma

• m = Fa

• a = Fm

What is the correct equation linking voltage current and resistance

• V = IR

• R = VI

• I = VR

What is the correct equation linking charge current and time

• Q = It

• I = Qt

• t = QI

What is the correct equation linking density mass and volume

• d = m / v

• d = m x v

• d = v / m

What is the correct equation for gravitational potential energy

• m x g x h

• m x g / h

• m x h / g

Tags

NGSS.MS-PS3-2

What is the correct equation for kinetic energy

• 1/2 x m x v²

• m x v²

• 1 / 2 x v x m²

Tags

NGSS.HS-PS3-2

What is the correct equation linking speed of a wave frequency and wavelength

• v = f x $\lambda$

• v = f / $\lambda$

• v = $\lambda$ / f

Tags

NGSS.HS-PS4-1

What is the correct equation for basic pressure 

• p = F / A

• p =  F x A

• p = A / F