Volcanic Winter definition
What will be an ideal response?
Caused by the release of ash and sulfuric acid that reflect energy to the sun back out into space
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What does it take to allow us to observe a neutron star as a pulsar?
What will be an ideal response?
A pulley system holding a rope that is pulled out a distance of 20 m is used for lifting a 2500 kg grand piano. The piano can be raised 3 m by application of a 375 N force to the rope
What will be an ideal response?
The single most important determinant of the temperature, density, radius, luminosity, and pace of evolution of a protostar is its:
A) chemical composition. B) magnetic field. C) spin. D) mass. E) molecular composition.
Imagine an advanced civilization living on a planet orbiting at a distance of 10 AU (1.5 billion kilometers) from a close binary star system that consists of a 15 MSun red giant star and a 10 MSun black hole. The black hole is surrounded by an accretion disk. One foolhardy day, a daring individual in their space force (let's call him Major Tom) decides to become the first of his species to cross the event horizon of the black hole. To add to the drama, he decides to go in wearing only a thin space suit, which offers no shielding against radiation, no cushioning against any forces, and so on. Which of the following is most likely to kill him first (or at least to start the process of killing him first)?
A) x-rays from the accretion disk B) tidal forces due to the black hole C) the crush of gravity at the singularity embedded within the black hole D) the sucking force from the black hole, which will cause his head to explode