The is the time it takes for a wave to complete one cycle.
2 answers:
Answer:
Period
Explanation:
The period of a wave by definition "is the time it takes to complete one cycle"
We can see the concept of period on the figure attached.
Is the time required to go from at some reference level to the same level or complete one complete cycle. And is defined as:
Where f is the frequency. And is also defined as:
Where is the wavelength for the wave and v the velocity.
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Answer:
Explanation:
Given
distance traveled by Passenger train is
distance traveled by Freight train is
Both take same time to travel
suppose speed of freight train is x mph
so speed of passenger train is 20+x mph
we know time
speed of passenger train
Answer:
78.498N
Explanation:
The Net force provided by the spinnaker can be obtained from Newton's second law of motion as follows;
where m is the mass, v is the final velocity, u is the initial velocity and t is the time interval for which the force acted.
Given;
m =980lb
v = 12mi/h
u =8mi/hr
t = 10s.
It is important to convert all quantities to their SI units where necessary, so we do that as follows;
1lb = 0.45kg,
hence 980lb = 980 x 0.45kg = 441kg.
1mile = 1609.34m
1hour = 3600s,
therefore;
Substituting all values into equation (1), we obtain the following;