What is an additional safety feature that could have to reduce the force felt by the drivers of both cars even more? a. a front-end crumple zone installed in the orange car b. a rear-end crumple zone installed in the blue car c. a locking brake system installed in the orange car, preventing its wheels from moving d. a rear-end crumple zone installed in the orange car

answer:

c. a locking brake system installed in the orange car, preventing its wheels from moving

explanation:

thus because the locking system was placed in my mom's car and it my   mom put on extra brakes

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:

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr