The high temperature of the corona is directly responsible for
A) prominences.
B) flares.
C) the solar wind.
D) aurora.
E) sunspots.
C
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A wheel (radius = 12 cm) is mounted on a frictionless, horizontal axle that is perpendicular to the wheel and passes through the center of mass of the wheel. A light cord wrapped around the wheel supports a 0.40-kg object. If released from rest with the string taut, the object is observed to fall with a downward acceleration of 3.0 m/s2. What is the rotational inertia (of the wheel) about the given axle?
A. 0.023 kg?m2 B. 0.013 kg?m2 C. 0.020 kg?m2 D. 0.016 kg?m2 E. 0.035 kg?m2
Which kind of star is highly unlikely to be found in the halo of the Milky Way?
A) O star B) G star C) K star D) M star
The momentum of an isolated system is conserved
A) only in inelastic collisions. B) only in elastic collisions. C) in both elastic and inelastic collisions.
pH measures
What will be an ideal response?