If a wave has a frequency of 6 Hz, it has a period of
a. 1/6 s.
b. 6.5 s.
c. 6 s.
d. 3 s.
[Ques. 2] A diatomic molecule consists of two point masses, m1 and m2, separated by a distance r. If x is the distance from m1 to the center of mass, find the moment of inertia in terms of x about an axis parallel to the molecular axis through the center of mass.
a. 0
b. m1x2 + m2(r x)2
c. m1m2 r2(m1m2)
d. m1(r x)2 + m2x2
e. m1x2 + m2r2
[Ques. 3] The point in the sky directly above an observer's head is called the ______________.
Fill in the blank(s) with correct word
[Ques. 4] A series of ocean waves are moving past a surfer at a frequency of 40 waves per hour. Approximately how many waves would the surfer expect during 48 minutes?
a. 1920 waves
b. 32 waves
c. 40 waves
d. 50 waves
[Ques. 5] A diatomic molecule consists of two point masses, m1 and m2, separated by a distance r. If x is the distance from m1 to the center of mass, find the moment of inertia in terms of x about an axis perpendicular to the molecular axis through the center of mass.
a. 0
b. m1m2 r2/m1 + m2
c. m1(r x)2 + m2x2
d. m1x2 + m2(r x)2
e. m2x2 + m1r2
[Ques. 6] The angle measured from the horizon to the line of sight to the celestial object is called the ______________.
Fill in the blank(s) with correct word
[Ques. 7] A series of ocean waves, each 24.0 m from crest to crest and moving past an observer at a rate of 6.0 waves per second, has what speed?
a. 144 m/s
b. 4 m/s
c. 6 m/s
d. 0.25 m/s
[Ques. 8] Assume a diatomic molecule can be considered to be two point masses separated by a distance r. The center of mass of the system is located a distance x from m1, equal to
a. m1r/(m1 + m2)
b. m2r/(m1 + m2)
c. (m1 + m2) r/m1
d. (m1 + m2) r/m2
e. r(m2/m1)
[Ques. 9] Longitude can be defined as the angular measurement, in degrees, east or west of the ______________ meridian.
Fill in the blank(s) with correct word
[Ques. 10] If a wave has a period of 0.077 sec, it has a frequency of
a. 1/13 Hz.
b. 3.6 Hz.
c. 169 Hz.
d. 13 Hz.
Quick Reply
