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Question
A massless meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark. A force
is applied perpendicularly to the end of the stick at 0 cm, as shown. A second force 
(not shown) is applied perpendicularly at the 60-cm mark. The forces are in the plane of the table top. If the stick does not move, the force exerted by the pivot on the stick:
A) must be zero
B) must be in the same direction as
and have magnitude 
C) must be directed opposite to
and have magnitude D) must be in the same direction as
and have magnitude 
E) must be directed opposite to
and have magnitude Answer
This answer is hidden. It contains 1 characters.
Related questions
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The intensity of the microwave background radiation, a remnant of the big bang:
A) is greatest in directions toward the center of the galaxy
B) is least in directions toward the center of the galaxy
C) is proportional to the reciprocal of the distance from us
D) is proportional to the square of the distance from us
E) is nearly the same in all directions
Q:
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A) 105y
B) 1010y
C) 1015y
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B) uud
C) udd
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Q:
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Q:
Any meson is a combination of:
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Q:
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Q:
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When a kaon decays via the strong interaction the products must include a:
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Q:
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A) a proton
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Q:
In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:
A) the energy of the least energetic electron before it is ejected
B) the energy of the least energetic electron after it is ejected
C) the energy of the most energetic electron before it is ejected
D) the energy of the most energetic electron after it is ejected
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Q:
In a photoelectric effect experiment at a frequency above cut off, the number of electrons ejected is proportional to:
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Q:
The units of the Planck constant hare those of:
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Q:
Two isotopes of hydrogen fuse to form a helium nucleus and a neutron:2H + 3H -> 4He + nThe masses are: 2H:2.013553 u3H:3.015501 u4He:4.001506 un:1.008665 uWhat is the Qvalue of this reaction?A) 1.9 MeVB) 2.5 MeVC) 2.8 MeVD) 17.6 MeVE) 938 MeV
Q:
A particle with rest mass m moves with speed 0.6c. Its kinetic energy is:
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Q:
A particle with zero mass and energy Ecarries momentum:
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Q:
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Q:
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Q:
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Q:
A meter stick moves sideways (that is, in a direction perpendicular to its length) at 0.95c. According to measurements taken in the laboratory, its length is:
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Q:
Pi mesons at rest have a half-life of T.If a beam of pi mesons is traveling at a speed of, the distance in which the intensity of the beam is halved is:
Q:
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E) none of the above
Q:
Figure (i) shows a double-slit pattern obtained using monochromatic light. Consider the following five possible changes in conditions:
1) decrease the frequency
2) increase the frequency
3) increase the width of each slit
4) increase the separation between the slits
5) decrease the separation between the slits
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B) 5 only
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Q:
The resolving power of a telescope can be increased by:
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B) increasing the lens diameters
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Q:
Light of wavelength 480 nm falls on a slit of width 3.5 m. What is the relative intensity (that is, the value of I/Im) of the diffraction pattern at an angle of 18?
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B) 1.7 x 10-3
C) 1.1 x 10-2
D) 1.0 x 10-1
E) 1.0
Q:
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