FM radio only operates in the frequency range 88 MHz to 108 MHz because
a. higher or lower frequencies are blocked by the ionosphere
b. higher and lower frequencies are not radio waves
c. the government set those limits
d. none of the above
C
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A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii. If the three of them are released simultaneously at the top of an inclined plane and do not slip, which one will reach the bottom first?
A) sphere B) pipe C) cylinder D) The pipe and cylinder arrive together before the sphere. E) They all reach the bottom at the same time.
A charged particle moves in a straight line through a region of space. Which of the following answers must be true? (Assume any other fields are negligible.) The magnetic field ack;mso-style-textfill-fill-alpha:100.0%'> that is submerged in the water?
1.has a magnitude of zero. 2.has a zero component perpendicular to the particle's velocity. 3.has a zero component parallel to the particle's velocity.
For a periodic process, the number of cycles per unit time is called the
A) amplitude. B) wavelength. C) frequency. D) period. E) pulse.
For silver at a tensile stress of 300 MPa and a temperature of 200°C, what is the primary creep mechanism?
What will be an ideal response?