A special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.The cost to make Mahogany planks is 1500 coins per log without the special logs. special mahogany log. Mahogany trees can make a nice amount of money due to the logs being 583 coins and the planks 2,031 coins each, and two Special mahogany logs are gained at an average of 1 per 50 logs cut.
Ultrasonic pest repellents seem to work on a variety of different pests. The pest they tackle depend on the type of device with some repelling rats, mice, cockroaches, ants, and spiders and others repelling also squirrels, fleas, bats, etc.
16. Some earthquake waves have the low frequency of 0.2 Hz and a speed of 8 km sâ1. What is their wavelength, and how long does one wave cycle take to pass? 17. A bat transmits ultrasonic clicks made of sound of frequency 80 kHz; the clicks have duration of 0.1 ms. The bat increases the clicking rate from about 20 Hz to 2 kHz as it nears its prey. An echo from an unwary moth initially returns after 20 ms.