In the SI (International, metric) system of measurement, they are the Kilogram of mass, the Meter of length, and the Second of time.
With mass, length, and time, you can combine them in enough ways to measure ALMOST everything that can be measured in the physical world, like speed, velocity, acceleration, momentum, area, volume, force, energy, pressure, etc.
'Almost'. You still need a few more to wrap things up. The other quantities (and their SI units) are: Electric charge (the Coulomb), temperature (the Kelvin), amount of a substance (the Mol), and luminous intensity (the Candela). You can't build these with only mass, length, and time.
Answer:
Period = 1.67 seconds
Frequency = 0.6 Hz
Explanation:
Number of vibrations in 60 seconds = 36
Frequency is defined as vibrations per second.
So, Frequency = 36/60 = 0.6 Hz
Time period is defines as time taken for 1 vibration,
So, Time period = 60/36 = 1.67 seconds.
Because they are mentally trying to extinguish the negative things in their lives and focus on the positive things
Answer: The correct answer is Option b. Distance.
Explanation:
Scientists and astronomers use this unit to measure the distance in space. A light year is a unit of distance and not time because light travels very fast and it travels a lot of distance in one year.
Light year is basically defined as how far the beam of light travels in a year.
Therefore, this light year is a unit of distance. Hence, the correct option is option b.
