In what direction does Uranus orbits the Sun?
A. It orbits the Sun in the opposite direction as the other planets.
B. It orbits the Sun in the same direction as the other planets.
Ans: B. It orbits the Sun in the same direction as the other planets.
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In diffraction measurements of strain, the reference gauge length is the unstressed _________spacing.
Fill in the blank(s) with the appropriate word(s).
Storm winds blowing at high speed over a roof can destroy the roof of a closed-up house because of Bernoulli's Principle. What happens is
A. the wind inside the house blows out the roof from the inside. B. friction rips up the roof and blows it apart. C. the higher pressure inside lifts the roof off the walls. D. the roof is pushed inward and collapses.
Suppose that in a certain collection of nuclei there were initially 1024 billion nuclei, and 20.0 minutes later there was only 1.00 billion nuclei left, the others having decayed
On the basis of this information, how many nuclei would you estimate decayed in the first 6.00 minutes?
Two flat glass plates are in contact along one end and are separated by a sheet of tissue paper at the other end. A monochromatic source of wavelength 490 nm illuminates the top plate. If 20 dark bands are counted across the top plate, what is the paper thickness? (1 nm = 10-9 m) Note that a dark band occurs where the plates contact
a. 2.7 × 10^-6 m c. 4.7 × 10^-6 m b. 3.4 × 10^-6 m d. 4.9 × 10^-6 m