If two forces of equal magnitude act on an object that is hinged at a pivot, the force acting farther from the pivot must produce the greater torque about the pivot
A) True
B) False
C) unable to decide without knowing the shape of the object
B
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In the context of luminosity classes,__________is a subgiant (IV)
A) Altair B) Rigel C) Polaris D) Adhara
A store's inventory or a library's card catalog is stored in a(n) ______.
A. portfolio B. database C. briefcase D. linear file
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg
(a) What is the radius of the path of the alpha particle? (b) How long does it take the alpha particle to make one complete revolution around its path?
A layer of water (n = 1.333) floats on carbon tetrachloride (n = 1.461) contained in an aquarium. To the nearest degree, what is the critical angle at the interface between the two liquids?
a. 88° b. 78° c. 66° d. 58° e. 43°