The ship above is using sonar to locate an object on the seafloor by sending sound waves down from the ship. The waves travel through the water and reflect off the object back to the ship. The speed of sound in the ocean is 1,500. meters/ second. How far below the surface is the object if the signal arrives back at the ship 2.72 seconds after it is sent? Round your answer to three significant figures. A 1,110 meters

B 551 meters

C 2, 040 meters

D 4,080 meters

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.