Ahunter wishes to cross a river that is 1.5 km wide and flows with a speed of 5.0km/h parallel to its banks. the hunter uses a small powerboat that moves at a maximum speed of 12 km/h with respect to the water. what is the minimum time necessary for crossing?

Answer:

The minimum time necessary for crossing the river is 0.125 hours

Explanation:

Given:

Width of the river=1.5km

Speed of the river stream=5.0km/hr

Speed of the boat=12km/hr

To find:

The minimum time taken for the hunter to cross the road=?

Solution:

We know  

Distance=the width of the river is the distance

Speed= speed of the small steam boat

Substituting the values in the equation we get

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

hello there!

your answer is a “generator”

a generator does not create energy but instead it transforms it.

it’s basically a motor working in reverse.