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Internal temperature of your body must be tighly controlled. The key processes of your body are driven by enzymatic activity and there is an optimal temperature at which these operate. If body temperature...

Factorise and solve x² - 8x + 15 = 0.

When factorising there are 3 things to look for;

1. A common factor in each component of the equation. In this case there are no commo...

E_k = (1/2)mv²

E_p = mg(dh)

Set these equal to each other, because of conservation of energy:

(1/2)mv² = mg(dh)

Cancel the mass:

To answer this question we need to think about the bonding that occurs within metals. Metallic elements form strong lattices due to the metallic bonding. This consists of a lattice of positive metal atoms...

My patio has an area of 68 m , so 48m².
Each tile has an area of 0.50.5 m, so 0.25m².
To find the number of tiles we need, we divide the area of the patio by the...