An object is placed at the center of curvature of a concave mirror. The image is
a. inverted, real, and the same size as the object.
b. virtual and the same size as the object.
c. virtual and smaller than the object.
d. virtual and enlarged.
e. erect, real, and the same size as the object.
a
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Atomic Nucleus: The atomic number of an atom is equal to the number of what particles in the nucleus?
A. protons B. neutrons C. nucleons D. electrons E. positrons
A 40.0 cm long organ pipe is filled with air and is open at both ends. The velocity of sound in air at 0
is 331 m/s. What is the frequency of the fundamental mode?
A. 297 Hz B. 314 Hz C. 373 Hz D. 385 Hz E. 414 Hz
The percentage volume of unoccupied space in a material is called its
a. traction. b. porosity. c. permeability. d. salinity.
When the frequency of the source of a water wave increases, the distance between successive peaks in the wave increases
a. True b. False Indicate whether the statement is true or false