What year was hubble put into orbit?
What will be an ideal response?
1990
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The six face-centered lattice points of a FCC lattice unit cell contribute ______________lattice point(s) to a unit cell.
Fill in the blank(s) with the appropriate word(s).
Which element makes up the largest percentage
by mass in the human body? a) oxygen b) carbon c) nitrogen d) iron
Which statement is correct about the relationship between the instantaneous speed and the magnitude of the instantaneous velocity?
A) The average speed can be less than, greater than or equal to the magnitude of the average velocity. B) The instantaneous speed is always equal to the magnitude of the instantaneous velocity. C) The average speed is always less than or equal to the magnitude of the average velocity. D) The instantaneous speed is always greater than or equal to the magnitude of the instantaneous velocity. E) The average speed is always one-half the magnitude of the average velocity.
The downdraft in a thunderstorm is strengthened as
A) warm moist air sinks in the thunder cell. B) dry air is drawn into the cloud, raindrops evaporate, and the air chills. C) cold moist air condenses. D) precipitation particles grow and fall.