Change the following direct speech to indirect speech: 1. "You need an operation," said the doctor.

2. "Your promotion is not guaranteed," said Mohan to Andy.

3. "Have the children arrived?" Isa asked.

4. "Please park your car behind the town hall," said the officer to the woman.

5. Annie said to Amy, "I took the book from Allen yesterday"

yes its like krisnis like in the air force .

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: