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Unformatted text preview: lude the correct units. You do not need to
follow significant figure rules in expressing your answers.
S1 [10 points]: Neutron stars are extremely dense objects that are formed from the remnants of
supernova explosions. Many rotate very rapidly. Suppose that the mass of a certain spherical neutron
star is twice the mass of the Sun and its radius is 10.0 km. Determine the greatest possible angular
speed it can have so that the matter at the surface of the star on its equator is just held in orbit by the
gravitational force. S2 [10 points]: A mass m is connected to two springs with equal spring constants k as shown in
Figure below. The mass is pulled a distance a to the right and begins to oscillate. What is the period
of oscillations? Page 4 of 7 UIC PHYSICS 105 Spring 2012 Practice Exam 3 S3 [10 points]: A bat is moving to the right with a speed
and a mosquito is moving to the left with
(and directly toward the bat). The bat emits a pulse of frequency
that bounces off the
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This note was uploaded on 01/24/2014 for the course PHYSICS 105 taught by Professor Unkown during the Spring '12 term at University of Illinois, Urbana Champaign.
- Spring '12