Suppose you use the Southern Cross to determine that the south celestial pole appears 40 degrees above your horizon. Then you must be located at ________

A) latitude 40 degrees north B) longitude 40 degrees
C) latitude 50 degrees south D) latitude 40 degrees south


D

Physics & Space Science

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When a damping force is applied to a simple harmonic oscillator which has angular frequency w0 in the absence of damping, the new angular frequency w is such that

a. w < w0. b. w = w0. c. w > w0. d. wT < w0T0. e. wT > w0T0.

Physics & Space Science

Muons at speed 0.9994c are sent round and round a circular storage ring of radius 1500 m. If a muon at rest decays into other particles after an average T = 2.2 × 10^-6 s, how many trips around the storage ring do we expect the 0.9994c muons to make before they decay?

a. 2 c. 0.2 b. 4 d. 6

Physics & Space Science

An ideal transformer has 60 turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary,

(a) what voltage is present in the secondary? (b) what current is present in the secondary?

Physics & Space Science

The rigid body shown rotates about an axis through its center of mass and perpendicular to the paper. If M = 2.0 kg and L = 80 cm, what is the kinetic energy of this object when its angular speed about this axis is equal to 5.0 rad/s? Neglect the mass of the connecting rod and treat the masses as particles



a.
18 J

b.
15 J

c.
12 J

d.
23 J

e.
26 J

Physics & Space Science