I need help solving this, i tried copying the table but it got disfigured here, here is the link (https://en.openprof.com/wb/measurement_problem_2?ch=3903) to the question page to see it better "Complete the table:

 

Physical quantity	Quantity label	Base unit	Name of the base unit	Measuring device
time
	m
		m
			kelvin
amount of substance
				ammeter
luminosity

What have you done so far? How do you measure time? What uses kelvins and how is it measured?

Just now, Bam bam said:

I need help solving this, i tried copying the table but it got disfigured here, here is the link (https://en.openprof.com/wb/measurement_problem_2?ch=3903) to the question page to see it better "Complete the table:

 

Do you realise that each line of the table is independent of any other line ?

So you fill it in line by line.

There are 7 base quantities in SI units and, (by coincidence ?), 7 lines in the table.

Look here

https://sciencenotes.org/si-base-units/

😀

 

So, starting with the first line how are you getting on with time ?

Edited March 21Mar 21 by studiot

Thanks, everyone! I was able to solve it. Really appreciate the help.

On 3/25/2025 at 12:31 AM, Bam bam said:

Thanks, everyone! I was able to solve it. Really appreciate the help.

In science, we use a set of standard physical quantities to measure things in a consistent way. These include time, length, mass, temperature, electric current, amount of substance, and luminosity. Each of these has a specific "quantity label"—for example, time is labeled as t, length as l, and mass as m. To measure them, we use base units. For instance, time is measured in seconds (s), length in metres (m), mass in kilograms (kg), and temperature in kelvins (K). Electric current uses the ampere (A), amount of substance is measured in moles (mol), and luminosity is measured in candelas (cd). Along with these, we use specific instruments to measure each one: a stopwatch or clock for time, a ruler or tape measure for length, a balance for mass, a thermometer for temperature, an ammeter for electric current, and a photometer or light meter for luminosity. These standard units and tools help scientists around the world measure and communicate their results clearly and accurately.

wow thats really hard, you are so smart guys!