Why are seat belts important and how do they to Newton's law of motion?

If seatbelts are not used, there is a high risk of injury if you were to get into a wreck because if there is no force acting on your body then you will continue moving even after the car has stopped. Newton's first law of motion states that an object will remain at rest unless compelled to change its state by the action of an external force. This law is also referred to as the law of inertia.

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answer is c

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: