Answer:
26m/s
Explanation:
Assuming that the acceleration is constant, we can start by calculating the train speed when it's free of the congested area:

Then with the same acceleration we can find out the final speed:

The answer is B. Idk how to explain. Choose b.
Answer:
use the formula
Explanation:
F = 1/ T
where F stands for frequency and T stands for period
sub in 3 Hz into frequency
3 = 1/T
0.333 = T
or in a fraction form
1/ 3
hope this helps
Answer:
Technician A only
Explanation:
Technician A says that knowing if there are any stored diagnostic trouble codes (DTCs) may be helpful when checking for related technical service bulletins (TSBs). Technician B says that only a factory scan tool should be useWhich technician is correct?
DTC's, or Diagnostic Trouble Codes, are used by automobile manufacturers to detect problems related to the vehicle. ... The first number in the DTC indicates whether the code is an SAE generic code
tsb are recommended techniques for repairing a vehicle. the manufactures of vehicles make this available so the technicians can work and make reference to it
Answer:
(a) T=6.07s
(b) 
Explanation:
For Part (a)
The initial amplitude is given as A=7.0 cm
Apply the equation
with
we have:

For Part (b)
Apply
with t=4.0s and T=6.07s we have
