What aspects of the planets orbits are nearly the same for most planets?
A) orbital period and shape
B) shape and tilt from the ecliptic
C) shape and distance from the Sun
D) orbital period and distance from the Sun
E) tilt from the ecliptic and distance from the Sun
B
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How is Pluto now classified by astronomers?
A. as a planet B. as a comet C. as a dwarf planet D. as a star E. as an asteroid
A solid uniform cylinder is rolling without slipping. What fraction of its kinetic energy is rotational?
A) 1/4 B) 2/3 C) 1/3 D) 1/2 E) 3/4
A bat emits a sound at a frequency of 39.0 kHz as it approaches a wall. The bat detects beats with a frequency of 827 Hz between the sound it emits and the echo bouncing from the wall
What is the speed of the bat if the speed of sound in air is 343 m/s? A) 2.7 m/s B) 3.0 m/s C) 3.6 m/s D) 5.4 m/s E) 9.0 m/s
A 150-W light bulb is designed to operate at 110 V dc. How much current does it draw?
A) 15 A B) 1.4 A C) 0.73 A D) 2.0 A