Answer:
600m
Explanation:
30×20 at a constant speed is 600m.
There are various properties which are exhibited by substances like physical properties,chemical properties,magnetic properties,electric properties etc.
By simply observing the substance we can not get any idea about the property of a substance.One has to conduct various tests in order to reach at his or her conclusion. The scientific tests provides a better understanding about the nature of substance and the changes that happen under various conditions and parameter.
Well a superconductor is a metal that acts strangely when cooled down to a certain temperature and a semiconductor and on the flip side a semiconductor<span>, is a material that has a conductivity somewhere between that of a conductor and an insulator. that is pretty much what i know i hope this helps</span>
Answer:
2000 kgm-3
Explanation:
Density = (Mass (kg))⁄(Volume (m3) )
20 g = 20 ×(10)-3)kg
10 cm3 = 10 ×(10)(-6) m3
Density = (20 ×(10)(-3)) ⁄ (10 ×(10)(-6) )
= 2000 kgm-3
