IP Assume that the brakes in your car create a constant deceleration of 4.7 m/s2 regardless of
how fast you are driving. If you double your diving speed from 17 m/s to 34 m/s , does the time required to come to a stop increase by a factor of two or a factor of four? Explain.

Part B: verify your answer by calculating the stopping times for initial speeds of 17 m/s. (Express answer using 2 sig figs)

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

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:

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

answer: option c.

explanation: