The conversion factor between meters and feet is that 1 meter equals ___ feet.

3.281 feet

True or False: Derived quantities are independent and cannot be expressed in terms of fundamental quantities.

False. Derived quantities can be expressed in terms of fundamental quantities.

Fill in the blank: The fundamental physical quantities include length, mass, time, electric current, temperature, amount of substance, and ___ intensity.

Luminous

What is the order of magnitude of 0.000520 kg?

The order of magnitude is -4.

Riddle: I can measure the size of things, but I have no physical form. What am I?

A unit of measurement

Based on their directional properties, physical quantities can be classified into ___ and ___ quantities.

Scalar and vector

True or False: The SI unit for force is written as Newton.

False. It should be written as N, not Newton.

Fill in the blank: Area is a ___ quantity derived from length.

Derived

What does the term 'significant figures' refer to in measurements?

Significant figures are the digits in a number that were measured plus one estimated digit.

Riddle: I hold the power to change units, but I have no physical presence. What am I?

Dimensional analysis