Direct motion of a planet is its normal motion ____________ among the stars
a. west to east along the ecliptic
b. east to west along the ecliptic
c. west to east along the celestial equator
d. east to west along the celestial equator
a
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If a wave from one slit of a Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point?
A) bright fringe B) dark fringe C) gray fringe D) multi-colored fringe
A bar magnet is falling through a loop of wire with constant velocity. The south pole enters first. The induced current will be greatest in magnitude when the magnet is located so that:
a. with no acceleration, the induced current is zero. b. the loop is near the south pole only. c. the loop is near either the north or the south pole. d. the loop is near the middle of the magnet.
The reason Earth's moon does not fall into Earth is because it orbits beyond Earth's gravitational pull.
Answer the following statement true (T) or false (F)
A stunt pilot performs a circular dive of radius 800 m. At the bottom of the dive (point B in the figure) the pilot has a speed of 200 m/s which at that instant is increasing at a rate of 20 m/s2. What acceleration does the pilot have at point B?
?
?
a.
m/s2
b.
