There is little fundamental difference between "natural" fuels such as wood and fossil fuels such ascoal and oil. Both contain the same combustible substances essential oils and body fats from dead plants and animals.
Answer:
In order most reactive to least reactive:
D
B
A
C
Explanation:
Answer:
Last bacteria is nerve cells
Answer:
If a disk rolls smoothly across a floor, what is the velocity of the point that is in contact with the floor? ... Twice the velocity of the center of the disk. Which gives the kinetic energy of an object rolling smoothly over a floor? The sum of the translational kinetic energy and the rotational kinetic energy.
Explanation:
When ice melts, the physicals state changes from solid to liquid. The energy or the heat required (q) required to change a unit mass (m) of a substance from solid to liquid is known as the enthalpy or heat of fusion (ΔHf). The variables; q, m and ΔHf are related as:
q = m * ΔHf
the mass of ice m = 65 g
the heat of fusion of water at 0C = ΔHf = 334 J/g
Therefore: q = 65 g * 334 J/g = 21710 J
Now:
4.184 J = 1 cal
which implies that: 21710 J = 1 cal * 21710 J/4.184 J = 5188.8 cal
Hence the heat required is 5188.8 cal or 5.2 Kcal (approx)