Describe in detail the observational properties of a pulsar. From these properties, how is it possible to interpret it as a neutron star?
What will be an ideal response?
A pulsar emits a radio wavelength signal at very regular intervals of a fraction of a second. The length of each pulse is on the order of milliseconds. Only a spinning object will be so regular, and only an object of very small size (like a neutron star) will be able to put out a pulse so short in length. A white dwarf spinning that fast would tear apart.
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What resistance must be connected in parallel with a 633-? resistor to produce an equivalent resistance of 205 ??
What will be an ideal response?
Conversion of Units: Which of the following speeds is greatest? (2.54 cm = 1.00 in.)
A. 10 km/h B. 10 m/s C. 10 ft/s D. 10 mi/h E. 10 yd/s
A low-power source of energy could put out a lot of work provided it
A) exerted its power over a very large distance. B) operated for a short time. C) operated for a long time. D) exerted a sufficiently strong force. E) Nonsense-- there is no way that a low-power source can put out a large amount of work.
The Zeeman effect shows that sunspots contain magnetic fields
a. True b. False Indicate whether the statement is true or false