In in ocean surveillance system of ship fitted with a (RADAR) the time dely between generation of a radio waves reflected from an enemy ship is observed to be 5.6s. Calculate the distance of the enemy ship from the surveillance ship.

Explanation

Time delay `T=5.6s`
`t=T/2=5.6/2=2.8`
Speed of radiowaves `=` speed of light (v)
`=3xx10^(8)ms^(-1)`
Distance from the surveillance ship to enemy ship `D=vxxt=3xx10^(8)xx2.8=8.4xx10^(8)m`
Distance (D)`=8.4xx10^(8)km`