Find the total positive charge of all the proton in 5gm of water

Number of moles in 5 gm of water is given as

1 mole consist of Avagadro number of molecules of water

so total number of water molecules

now we know that each water molecule will have 10 number of proton in it

so total number of protons in all the molecules is given as

now we know that total charge is given as

so we will have

so above is the charge due to all water molecules

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:

c. magnitude and direction