Seyferts have properties that lie between quasars and normal spiral galaxies
Indicate whether the statement is true or false
TRUE
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Suppose you kick a soccer ball straight up to a height of 10 meters. Which of the following is true about the gravitational potential energy of the ball during its flight?
A) The ball's gravitational potential energy is greatest at the instant when the ball is at its highest point. B) The ball's gravitational potential energy is greatest at the instant it returns to hit the ground. C) The ball's gravitational potential energy is always the same. D) The ball's gravitational potential energy is greatest at the instant the ball leaves your foot.
Suppose we discover a new comet on an orbit that brings it closer to the Sun than Mercury every 125 years. What can we conclude?
A) It has been on its current orbit for only a short time compared to the age of our solar system. B) It came from the Oort cloud. C) It came from the Kuiper belt. D) It has a coma and tail during most of each orbit.
Two parallel and coaxial current loops of radius a are placed a distance 2L apart. The current in each ring circulates in the same direction. At a point on the axis half way between the loops the magnetic field in T has magnitude
A.
B.
.C.
.D.
.E.
.The products of nuclear fission are radioactive due to their
A) combustive natures. B) capacity to hold vast amounts of energy. C) greater neutron to proton ratio compared with stable nuclei in the same mass range. D) short half-lives. E) none of the above