A hunter wishes to cross a river that is 1.5 km wide and flows with a velocity of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 12 km/h with respect to the water. What is the minimum time for crossing?
0.14 h
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What was the most controversial issue surrounding the nature of the Universe during the Renaissance?
a. The movement of visible galaxies b. The origins of the Universe c. The number of planets in the Solar System d. The position of Earth in the Universe e. The existence of life on planets other than Earth
1062/1060 = 100. What is ln 1062/ln 1060?
A. 100 B. 10 C. 4.6 D. 1.0
Each pattern shown below would appear on a screen when monochromatic light of wavelength ? first passes through a narrow slit of width a and then strikes a screen. The darkest areas on the page represent the brightest areas on the screen. In which case does the slit have the narrowest width?
A.
B.
C.
D.
E.
Core-dominated radio galaxies and radio galaxies with lobes are very similar in reality; we view them from different angles, which accounts for their different appearances
Indicate whether the statement is true or false