Pulsars. When a star with a mass at least ten times that of the Sun explodes outward in a supernova, its core can be collapsed into a pulsar, which is a spinning star that emits electromagnetic radiation (radio waves or light) in two tight beams in opposite directions. If a beam sweeps across Earth during the rotation, we can detect repeated pulses of the radiation, one per revolution. (a) The first pulsar was discovered by Jocelyn Bell Burnell and Antony Hewish in 1967; its pulses are separated by 1.3373 s.

University Physics Volume 1
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Author:William Moebs, Samuel J. Ling, Jeff Sanny
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Chapter6: Applications Of Newton's Laws
Section: Chapter Questions
Problem 129CP: In a later chapter, you will find that the weight of a particle varies with altitude such that...
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Pulsars. When a star with a mass at least ten times
that of the Sun explodes outward in a supernova, its
core can be collapsed into a pulsar, which is a
spinning star that emits electromagnetic radiation
(radio waves or light) in two tight beams in opposite
directions. If a beam sweeps across Earth during the
rotation, we can detect repeated pulses of the
radiation, one per revolution. (a) The first pulsar was
discovered by Jocelyn Bell Burnell and Antony
Hewish in 1967; its pulses are separated by 1.3373 s.
What is its angular speed in revolutions per second?
(b) To date, the fastest spinning pulsar has an angular
speed of 716 rev/s. What is the separation of its
detected pulses in milliseconds?
(a) Number i
(b) Number i
Units
Units
Transcribed Image Text:Pulsars. When a star with a mass at least ten times that of the Sun explodes outward in a supernova, its core can be collapsed into a pulsar, which is a spinning star that emits electromagnetic radiation (radio waves or light) in two tight beams in opposite directions. If a beam sweeps across Earth during the rotation, we can detect repeated pulses of the radiation, one per revolution. (a) The first pulsar was discovered by Jocelyn Bell Burnell and Antony Hewish in 1967; its pulses are separated by 1.3373 s. What is its angular speed in revolutions per second? (b) To date, the fastest spinning pulsar has an angular speed of 716 rev/s. What is the separation of its detected pulses in milliseconds? (a) Number i (b) Number i Units Units
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