What do X-ray observations tell us about conditions around a potential nova?
What will be an ideal response?
The mass transfer causes an accretion disk to build up around the white dwarf, and as the material spirals in toward the strong gravity of the collapsed star, it is heated up to millions of degrees, hence becoming observable in X-rays. In some cases, this disk is so hot that it outshines the white dwarf, even in visible light. Fluctuations in the transfer create observable short period changes in its light.
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Find the magnetic energy stored in the air gap between two very large magnetic pole pieces, one North, one South, each with an area of 100 cm2 . Assume the 0.05-T magnetic field is uniform within the 2-cm gap
An acid added to a base will produce a
a. salt and hydrogen ions. b. salt and hydroxide ions. c. salt and water. d. stronger acid and base.
A general name for an intrusive igneous rock formation is ______________
a. discordant b. dike c. concordant d. pluton
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C As the ice is melting, the temperature of the ice-water mixture rises by
a. 0°C b. +5°C c. –5°C d. +10°C e. –10°C