What is the hohlraum?
What will be an ideal response?
The hohlraum refers to a closed container whose surfaces, sides, bottom, and
top can only see each other and which has (theoretically) no openings to the
surroundings.
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The reason the rings of Saturn exist is because
A) the ring material lies within the Roche limit of Saturn. B) the gravitational influence of Titan confines them to those orbits. C) the eruptions of Mimas' volcanoes are keeping them supplied with ice. D) there has not been sufficient time for the ring particles to form a moon. E) Saturn's rapid rotation is spinning material away from its equator, out into space.
An object 2.0 cm tall is placed 24. cm in front of a convex mirror whose focal length is 30. cm
(a) Where is the image formed? (b) How tall is it?
Suppose that the gravitational force by Earth on the moon suddenly shut off. How would the moon then move?
A) It would go into a larger circular orbit. B) It would move straight ahead in a straight line, at constant speed. C) It would move directly outward, away from Earth. D) It would slow down and stop. E) It would move directly inward, toward Earth.
A 2 000-kg sailboat experiences an eastward force of 3 000 N by the ocean tide and a wind force against its sails of magnitude 6 000 N directed toward the northwest (45° N of W). What is the magnitude and direction of the resultant acceleration?