An air bubble released by a deep-water diver, 115 m below the surface of a lake, has a volume of 1.60 cm3. the surface of the lake is at sea level, and the density of the lake water can be approximated as that of pure water. as the bubble rises to the surface, the temperature of the water and the number of air molecules in the bubble can each be approximated as constant. find the volume (in cm3) of the bubble just before it pops at the surface of the lake.
cm3.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

compass can be used day and night, cloudy or sunny