Asound wave is used to mesure the distance from the ship to the sea bed. an electronic device
placed in the ship traces a pulse sent from the ship and reflected pulse that returns. the
time-base setting for the x-axis is 60 ms per division.
the speed of sound wave in water is 1500 m/s. find
the distance from the ship to the sea bed.

Which changes of state do the labels represent? a: b: c:

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.