In size, Mercury is intermediate between:
A) Earth and Venus.
B) Mars and Earth.
C) the Moon and Mars.
D) Pluto and the Moon.
E) Ceres and Pluto.
C
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Hot dense objects like the filaments in an incandescent light bulb produce
A) a continuous spectrum B) an emission spectrum C) an absorption spectrum D) no spectrum
Vector = 4.00 m points eastward and vector = 3.00 m points northward. The resultant vector + is given by
A) 5.00 m at an angle 71.6° north of east. B) 5.00 m at an angle 36.9° north of east. C) 5.00 m at an angle 53.1° north of east. D) 5.00 m at an angle 18.4° north of east. E) 5.00 m at an angle 26.6° north of east.
If you took a Ferris wheel ride in space while sitting on a bathroom scale, your weight
A. would increase and decrease just as on Earth. B. would be constant and larger than zero for the entire ride. C. would start large and continually decrease. D. would start small and continually increase. E. would be zero for the entire ride.
A turntable has a moment of inertia of 3.0 × 10^?2 kg·m2 and spins freely on a frictionless bearing at 25 rev/min. A 0.60-kg ball of putty is dropped vertically on the turntable and sticks at a point 0.10 m from the center. By what factor does the kinetic energy of the system change after the putty is dropped onto the turntable?
a. 0.91 b. 1.0 c. 0.83 d. 1.5