You can hear sound through an open window from sources that are not in your line of sight because of

a. interference
b. diffraction
c. the sound level
d. the Doppler effect
e. none of the above


B

Physics & Space Science

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Perigee is the point in ____

a. the Moon's orbit when the Moon is farthest from Earth b. an object's orbit around Earth when the object is closest to Earth c. an object's orbit around Earth when the object is closest to the Sun d. a planet's orbit when the planet is closest to its sun e. a planet's orbit when the planet is farthest from its sun

Physics & Space Science

The surface of the neutron star RXJ2015 has a temperature of 10 million K. This neutron star glows most strongly in

A) visible light. B) infrared light. C) emission lines. D) radio light. E) X-ray light.

Physics & Space Science

Mass on a Spring: An object attached to an ideal spring oscillates with an angular frequency of 2.81 rad/s. The object has a maximum displacement at t = 0.00 s of 0.232 m. If the force constant (spring constant) is 29.8 N/m, what is the potential energy stored in the mass-spring system when t = 1.42 s?

A. 0.350 J B. 0.256 J C. 0.329 J D. 0.399 J

Physics & Space Science

An observer in the Southern 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

Physics & Space Science