Recent content by ejwaxx

It means integer part, i.e. the greatest integer ≤ x. For x in (0, 1), int x = 0 (since 0 < x < 1), so the limit from the right would be zero. On the other hand, since in (-1, 0) int x = -1 (because -1 < x < 0), so the limit from the left would go to +infinity.

The engine operates with efficiency 1 - 299/312 ≈ 0.042. If 6.12 x 10^5 J of heat are deposited, 6.12 x 10^5 J * 0.042 = 25500 J = 25.5 kJ were removed.