Why do astronomers suspect there may be a ninth planet beyond Neptune?
A. The Kuiper Belt is not in the expected position.
B. Pluto has more moons than it should.
C. Several Trans-Neptunian Objects have elongated orbits yet are all currently closest to the Sun.
D. Neptune's orbit extends closer to the Sun than expected.
Answer: C
You might also like to view...
Neutron stars were first discovered in the 1930's
a. True b. False Indicate whether the statement is true or false
Circular Motion of Charges: A proton is accelerated from rest through 0.50 kV. It then enters a uniform magnetic field of 0.30 T that is oriented perpendicular to its direction of motion.(a) What is the radius of the path the proton follows in the magnetic field?(b) How long does it take the proton to make one complete circle in the magnetic field?.
What will be an ideal response?
A ball is rolling along the floor. It is rolling toward the east, and slowing down as it rolls. As the ball rolls,
A) the net force on it is toward the west. B) its velocity is toward the west. C) Both of the above. D) the net force on it is zero. E) the net force on it is toward the east.
The Pliocene is a(n)
a. epoch. b. era. c. eon. d. period.