Which of the following statements is evidence in the form of an example? A: I strongly believe that breakfast is the most important meal of the day. B: After Susan began eating breakfast every day, she noticed she was much more alert and ready to participate in her morning classes.
C: A study of 500 middle-school students in Virginia showed that test scores improved by 15 percent when students ate breakfast.
D: An example of a healthy breakfast is an omelet with vegetables, whole grain toast, and orange juice.

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Explanation:

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:

the awnsers b

explanation: