If the merger theory is correct, the brightest active galactic nuclei should:
A) be in the smallest elliptical galaxies.
B) contain the youngest stars.
C) contain the least mass.
D) contain supermassive black holes.
E) form small irregular galaxies.
D
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A 3.000 kg ball is pitched with a kinetic energy of 20.00 Joules. Then the momentum of the ball is
A. 7.500 kg m/s. B. 8.350 kg m/s. C. 9.450 kg m/s. D. 10.95 kg m/s. E. 12.50 kg m/s.
Long period comets are thought to reside mainly in the:
A) asteroid belt. B) Kirkwood gaps. C) Kuiper Belt. D) Oort Cloud. E) Interstellar Medium.
Relative to some reference frame in the universe, you may now be traveling at a speed
A) faster than the speed of light. B) slower than the speed of light. C) at the speed of light. D) any of the above
In a mass spectrometer a particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular path of radius R
The magnetic field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R. A) qB2R2/V B) qB2R2/(2V) C) q2B2R2/V D) q2B2R2/(2V) E) qB2R2/(V2)