A walkthrough of the ZX Spectrum game, Kentilla. From the recording originally sent to http://www.rzxarchive.co.uk/. Recorded using rollback, a feature of the emulator which allows you to mark a point, which you can then roll back to later if you get in trouble, and try again.
The lightweight, portable Javelin offers stand-alone surveillance to observe opposing forces. Javelin is a man portable anti-tank weapon with a carry-weight of 22.3 kg. The CLU is easily attached to the missile and launch tube assembly. Javelin automatically guides itself to the target after launch. Javelin in operation with the Irish army.
A tennis ball weighs 57 grams. An arm weighs about 2000 grams (4.4 pounds). The average of these two weights is 2057/2 = 1028 grams, which is way too heavy for a racquet. The geometric mean gives a more sensible answer for racquet weight. Multiply the numbers together and you get 57 Ã 2000 = 114,000 square grams. Now take the square root of 114,000 which is 337.6 grams. That is the geometric mean, and it may be the ideal weight in terms of racquet power (assuming your arm weighs 2000 grams). A 337.6-gram racquet is 5.92 times heavier than a 57-gram tennis ball, and a 2000-gram arm is 5.92 times heavier than a 337.6-gram racquet. Example 2: A Baseball Bat.