Suppose that a car weighing 4000 pounds is supported by four shock absorbers Each shock absorber has a spring constant of 6250 lbs/foot, so the effective spring constant for the system of 4 shock absorbers is 25000 lbs/foot.

a. Assume no damping and determine the period of oscillation of the vertical motion of the car.
b. After 10 seconds the car body is 5 inches above its equilibrium position and at the high point in its cycle. What were the initial conditions?
c. Now assume that oil is added to each the four shock absorbers so that, together, they produce an effective damping force of -83.2 lb-sec/in times the vertical velocity of the car body. Find the displacement y(t) from equilibrium if y(o)=0 in and y(0)= -10 in/sec.

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:

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

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:

terd muffin is the correct answer