The Cassini spacecraft:
A. flew past Pluto.
B. landed on Mars.
C. orbited Saturn.
Ans: C. orbited Saturn.
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The focal length of the lens of a simple film camera is 40.0 mm. By what amount should the distance between the lens and the film be increased or decreased to change the focus from a person
who is 25 m from the lens to one who is 4.0 m from the lens? A) 0.2 mm B) 0.3 mm C) 0.4 mm D) 0.5 mm E) 0.7 mm
The _____ of a star is the time it takes the star to complete a cycle from bright to faint to bright again
A) life span B) luminosity period C) period of pulsation D) half-life
The figure is a graph of an object moving in a straight line. Solve graphically to determine which section of the path has the highest speed.
A. DE
B. EF
C. CD
D. AB
The parallax of the star 75 Leo is 0.10 and its apparent visual magnitude is +5.18 . The absolute visual magnitude of 75 Leo is ____________________
Fill in the blank(s) with correct word