Units and Equations

Which of the following is a correct unit for pressure ?

• Newtons per metre squared

• Kilograms per metre cubed

• Newtons

• Metres squared

Which of the following is a correct unit for pressure ?

• Pascal

• Kilograms per metre cubed

• Newtons

• Newtons per metre cubed

Which of the following is a correct unit for electric charge ?

• Coulombs

• Amperes

• Volts

• Joules

What is the equation for calculating density?

• ρ = m/V

• ρ = V/m

• ρ = F/A

• ρ = pV

What is a correct equation for calculating mass?

• m = ρ/V

• m = V/ρ

• m = F/A

• m = ρV

What symbol is used to represent gravitational field strength?

• F

• A

• g

• h

Which equation correctly represents how to calculate weight from mass and gravitational field strength?

• W = m/g

• W = mg

• W = m + g

• W = m/g²

What is the correct formula for calculating pressure in fluids and gases?

• p = F/A

• Δp = ρgh

• p = m/V

• p = ρg

What is the unit of frequency?

• Metres/second

• Hertz

• Seconds

• Metre

What is the unit of wavelength?

• Metres/second

• Hertz

• Seconds

• Metre