All electromagnetic waves have the same physical characteristics. They differ only in frequency and wavelength. How are they classified into different types?
Basic names are given to electromagnetic waves depending on the frequency and
wavelength ranges within which they fall. They are further classified by the method
by which they are generated or detected.
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Graphical Analysis: The figure shows a graph of the velocity of an object as a function of time. What is the displacement of the object from 0 s to 6.0 s?
A. 20 m B. 40 m C. 60 m D. 80 m E. 100 m
A constant force F is applied to a body of mass m that initially is headed east at velocity v0 until its velocity becomes ?v0. The total time of travel is 2t. The total distance the body travels in that time is
A.
.B.
.C.
.D.
.E.
.A flywheel is used to minimize changes in rotational velocity as the torque or the load changes. The rotational inertia of a flywheel should be chosen to be
A. as small as possible. B. as large as possible. C. anything-it doesn't matter.
If the distance between Body A and Body B is tripled, then the gravitational force between the two bodies is halved
a. True b. False Indicate whether the statement is true or false