A pilot drops a package from a plane flying horizontally at a constant speed. Neglecting air resistance, when the package hits the ground the horizontal location of the plane will
A) be behind the package.
B) be directly over the package.
C) be in front of the package.
D) depend on the speed of the plane when the package was released.
B
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If a white dwarf gains sufficient mass, it can become a:
A) brown dwarf. B) type II supernova. C) type I supernova. D) planetary nebula. E) black dwarf.
Foliation develops in metamorphic rocks when
What will be an ideal response?
In an elastic solid there is a direct proportionality between strain and
a. elastic modulus. b. temperature. c. cross-sectional area. d. stress.
A giant star radiates energy at the rate of 3.0 × 1030 W, and its surface temperature has been measured to be 3000 K. Assuming that it is a perfect emitter, what is the radius of this star? (? = 5.67 × 10-8 W/m2 ? K4)
A) 7.8 × 1010 m B) 8.7 × 1010 m C) 1.4 × 1010 m D) 1.9 × 1011 m E) 2.3 × 1011 m