Units of Measurement

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Questions and Answers

What is the derived unit for force?

Watt (W)
Joule per second (J/s)
Joule (J) (correct)
Newton per meter (N/m)

In the SI system, what is the unit for luminous intensity?

Candela (cd) (correct)
Kelvin (K)
Ampere (A)
Mole (mol)

Which prefix corresponds to 10^-6?

Deci (d)
Pico (p)
Femto (f)
Micro (µ) (correct)

What is the derived unit for acceleration?

Meter per second square (m/s²) (B) Signup and view all the answers

Which coordinate system involves the labeling of points as (r,θ)?

Plane polar coordinate system (B) Signup and view all the answers

What is the unit for electric current in the SI system?

Ampere (A) (B) Signup and view all the answers

What is the definition of the unit of length, the meter?

The meter is defined as the distance traveled by light in vacuum during a time interval of 1/299,792,458 of a second. (A) Signup and view all the answers

What is the definition of the unit of mass, the kilogram?

The kilogram is defined as the mass of a platinum-iridium alloy cylinder kept at the Bureau of Weights and Measures in France. (A) Signup and view all the answers

What is the definition of the unit of time, the second?

The second is defined as 9,192,631,770 times the period of oscillation of radiation from the cesium 133 atom. (D) Signup and view all the answers

What are the three main systems of units described in the text?

CGS (Gaussian System), SI (System International), and US Customary/BES Units. (B) Signup and view all the answers

What are the seven basic/fundamental units in the SI (System International) system?

Length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity. (B) Signup and view all the answers

What is the relationship between the unit of length, the meter, and the speed of light?

The meter is defined as the distance traveled by light in vacuum during a time interval of 1/299,792,458 of a second, which establishes the speed of light as 299,792,458 meters per second. (C) Signup and view all the answers

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