The cat sensor does the work for you and keeps your cat safe. 1  With the Litter-Robot, maintenance is easy and infrequent. We recommend emptying the waste drawer once every 7-10 days for a single cat household, and more often if you have multiple cats.
It's simple. Radio waves travel unbelievably fastâat the speed of light (300,000 km or 186,000 miles per second). Analog radio. Ocean waves carry energy by making the water move up and down. In much the same way, radio waves carry energy as an invisible, up-and-down movement of electricity and magnetism.
Report Abuse. Radio waves travel at the speed of light one hundred and ninety million miles per second. A radio wave sent to Mars will take about four minutes to get there, and the return message will take four minutes, eight minutes both ways.It takes the light from the sun eight minutes to reach th earth, if the sun was to go out, it would be eight minutes until you will know it has gone out.t its closest Mars is about 35million miles away. At its most distant it is about 230 million miles away. The speed of radio waves is 186000 miles per second so at its furthest the radio waves will take about 20minutes to get there. Work it out on a calculator for greater accuracy.