Box contains five slips of paper each with one of the letters abc d or e written on at another box has for slips of paper each with one of the numbers 1 2 3 or 4 written on it without looking now to draws a slip of paper from each box what is the probability that dirty draws the p for one box of the number two for the other box

I doubt you meant to write "draws the P" but if you did your probability is 0.

Otherwise if you meant any other letter your probability would be

5%, 0.05, or 1/20.

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: