Most of first extrasolar planets found were detected by
A) noting the drop in the star's light as the planet transits its disk.
B) imaging them with the HST in the infrared, where they are easier to stop.
C) noting the Doppler shifts of the star as the planet orbits it from side to side.
D) receiving radio transmissions from them, much like Jupiter emits.
E) detecting the oxygen in their atmospheres spectroscopically.
C
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Answer the following statement true (T) or false (F)
A positive charge and a negative charge held a certain distance apart are released. As they move, the force on each particle
A) increases. B) decreases. C) stays the same.
The electric field shown is produced by a single point charge at the center of the picture
 What force will a negative charge placed at location C feel? a. zero b. a force up and to the left c. a force up and to the right d. a force down and to the left e. a force down and to the rightA non-uniform, 80-g, meter stick balances when the support is placed at the 51.0-cm mark. At what location on the stick should a 5.0-g tack be placed so that the stick will balance at the 50.0 cm mark?
A) 16.0 cm B) 67.0 cm C) 66.0 cm D) 35.0 cm E) 34.0 cm