An observer in the Northern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?
a.
straight north
b.
straight east
c.
straight south
d.
straight west
e.
straight up, directly overhead
D
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Two concentric circular wire loops in the same plane each carry a current. The larger loop as a current of 8.46 A circulating clockwise and has a radius of 6.20 cm. The smaller loop has a radius of 4.42 cm. What is the magnitude and direction of the current in the smaller loop if the total magnetic field at the center of the system is zero?
A. 6.03 A CCW B. 6.03 A CW C. 12.8 A CCW D. 12.8 A CW
At t = 0, a particle leaves the origin with a velocity of 5.0 m/s in the positive y direction. Its acceleration is given by 
m/s2. At the instant the particle reaches its maximum y coordinate how far is the particle from the origin?
A. 11 m B. 16 m C. 22 m D. 29 m E. 19 m
Is it possible for kinetic energy to increase during an inelastic collision? Explain
What will be an ideal response?
Infrared waves have a ________ wavelength than microwaves.
Fill in the blank(s) with the appropriate word(s).