Explanation:
if the density is more than 19.3 it has iron.
if it is less then it is not gold.
d=m/v
25.04/4.99=5.01g/cm3
then it is not gold, it is iron pyrite.
Answer:
Biomass energy, Wind Energy, Hydro-power, Solar energy are some of the most utilized naturally occuring renewable resources.
The statement that is accurate with regard to migration to metropolitan areas from 1995 - 2000 was that at least 40% of all ethnic groups changed places.
The ultimate cause of earth's winds is solar energy. when sunlight strikes Earth's surface,it heats that surface differently. Newly turned soil, for example,absorbs more heat than does snow. uneven heating of Earth's surface,in turn, cause difference in air pressure at various locations. heated air rises, creating an area of low pressure beneath. cooler air descends,creating an area of high pressure. since the atmosphere constantly seeks to restore balance,air from areas of high pressure always flow into adjacent areas of low pressure. this flow of air is wind. the difference in air pressure between two adjacent air masses over a horizontal ditance is called the pressure gradiant force. the greater the difference in pressure, the greater the difference pressure, the greater the force and tje stronger the wind
draw x,y axes.
x is deg M
y is deg C
0 of deg M = -38.9degC
100 >>> 356.9
draw st line 0,-38.9 to 100,356.9
slope is 3.95
line eq is degC = 3.95xdegM-38.9
set degC to 100. find degM
degM about 35 for boiling water