Which position in this diagram represents Earth at the beginning of spring for the Southern Hemisphere?
A) 1
B) 2
C) 3
D) 4
C) 3
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A river 100 m wide flows due south at 1 m/s. A boat that travels 1 m/s relative to the water is pointed due east as it crosses from the west bank. The boat reaches the east bank
A) due east of its starting point. B) 100 m farther south. C) 141 m farther south. D) none of the above
A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 ?C placed on it. At the center of the shell is placed a point charge of 2.00 ?C. What is the electric field at a distance of 30.0 cm from the center of the spherical shell?
a. 
b. 
c. 
d. 
e. 0.0
Suppose that you measure the parallax angle for a particular star to be 0.1 arcseconds. What is the distance to this star? (Hint: A star at a distance of 3.26 light-years has a parallax angle of 1.0 arcseconds.)
A) 0.1 light-years B) 0.326 light-years C) 10 light-years D) 32.6 light-years E) 3.26 light-years
At the end of 1/2 second an apple freely falling from rest has a speed of
A) 1 m/s. B) 5 m/s. C) 10 m/s. D) more than 10 m/s.