A protogalactic cloud with very little angular momentum is more likely to form an elliptical galaxy than a spiral galaxy
Indicate whether the statement is true or false
TRUE
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How can an old pulsar have a very short pulsar period, say less than 0.03 seconds?
What will be an ideal response?
Which method of astronomical measurement is the precise measurement of brightness?
A) spectroscopy B) photography C) astrometry D) photometry E) interferometry
After a supernova explosion, the remains of the stellar core
A) will always be a neutron star. B) be either a neutron star or a black hole. C) will always be a black hole. D) may be either a white dwarf, neutron star, or black hole.
A 200-volt battery is connected to a 0.50-microfarad parallel-plate, air-filled capacitor. Now the battery is disconnected, with care taken not to discharge the plates. Some Pyrex glass is then inserted between the plates, completely filling up the space. What is the final potential difference between the plates? (The dielectric constant for Pyrex is ? = 5.6.)