Physics, 10.10.2019 07:00 charrij26

An anchored fishing boat uses sonar to work out how deep would the water be if the echo took 2 seconds to return?

a) how deep is the water
b) if the boat was on a lake instead of the sea, how deep would the water be if the echo took 2 seconds to return.

c) why is it important that the sonar machine has the information about what kind of water the boat is in.

d) a little while later, the ultrasound machine detects two echoes from a ping, after 0.05 seconds and 0.7 seconds. suggest what these echoes mean..

i need the right answers for today

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 17:10

An automobile of mass 2000 kg moving at 30 m/s is braked suddenly with a constant braking force of 10000 n. how far does the car travel before stopping?

Answers: 2

Answer

Physics, 21.06.2019 21:10

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Answers: 3

Answer

Physics, 22.06.2019 09:00

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Answers: 1

Answer

Physics, 22.06.2019 10:00

Which atomic model was proposed as a result of j. j. thomson’s work?

Answers: 1

Answer

You know the right answer?

An anchored fishing boat uses sonar to work out how deep would the water be if the echo took 2 secon...

Questions