You want to test how the mass of a ball affects its rate of fall. Which of the following ball drop trials (matched mass and drop heights) would best test this question?
A) mass of 0.5 kg, height 20 m/mass of 0.5 kg, height 20 m
B) mass of 0.5 kg, height 20 m/mass of 5.0 kg, height 10 m
C) mass of 0.5 kg, height 20 m/mass of 5.0 kg, height 20 m
D) mass of 0.5 kg, height 20 m/mass of 0.5 kg, height 10 m
C
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Weight and g: The mass of Pluto is 1.31 × 1022 kg and its radius is 1.15 × 106 m. What is the acceleration of a freely-falling object at the surface of Pluto if it has no atmosphere? (G = 6.67 × 10-11 N ? m2/kg2)
A. 0.661 m/s2 B. 9.81 m/s2 C. 1.62 m/s2 D. 3.72 m/s2 E. 0.140 m/s2
Seamounts with flat tops are known as ______________
Fill in the blank(s) with correct word
What will you see with the following type of optic: Concave lens
A. Image is smaller |
B. Image is the same |
C. Image is larger |
A total solar eclipse occurred in Wolf Point, Montana on Feb. 26, 1979 . When was (will) this eclipse again (be) visible in Montana?
a. August of 1979 b. March of 2033 c. March of 1997 d. March of 1979 e. January of 2000