A scalar is a quantity that is fully described by a magnitude only. It is described by just a single number. Some examples of scalar quantities include speed, volume, mass, temperature, power, energy, and time. A vector is a quantity that has both a magnitude and a direction.
I hope this helps you.
As long as all the waves stay in the same medium, the intensity of
any waves ... electromagnetic or mechanical ... decrease in proportion
to the square of the distance.
If the distance increases to 3 x the original distance, then the intensity
changes to 1/3² or 1/9 of the original intensity.
I suppose choice-'d' is the correct one, but I have to tell you that
the phrase "nine times as low" is mathematically meaningless,
and it really grinds my gears.
The answer to ur question is: B
Answer:
1 g/cm³
Explanation:
1 kg = 1000 g
1 cm = 0.01 of a meter
1 m³ = 100 cm * 100 cm * 100 cm = 1,000,000 cm
1,000 kg / 1 * 1000 g / 1 kg
^ divided by 1,000,000 cm
1,000,000 divided by 1,000,000 = 1 g/cm³
