Question

help me solving some questions of Physics ​

Answer 1

Explanation:

1) The SI unit of density 1 gram / cm^3

2) Surface area refers to the area covered by it's surface . There are two types of surface area :

I) Total surface area

II) Lateral surface area

3) Distance covered per unit time is known as speed. Its SI unit is m/ sec.

4) Grace would require 4 hours so as to cover a distance of 56 miles with a speed of 14 mph.

5) The most easiest and simplest method so as to find the area of an irregular body is to divide the body in familiar shapes at different dimensions .

6) I) 1 hectare = 2.47 acres

II) 1 km^3 = 1×10^9