An object is 50 cm from a concave mirror with radius of curvature of magnitude 60 cm. What is the lateral magnification produced by the mirror?
A) +0.40
B) +0.70
C) +1.5
D) -0.70
E) -1.5
E
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Two organ pipes, a pipe of fundamental frequency 440 Hz, closed at one end, and a pipe of fundamental frequency 660 Hz, open at both ends, produce overtones. Which choice below correctly describes overtones present in both pipes?
a. After the first overtone of each pipe, every second overtone of the first pipe matches every second overtone of the second pipe. b. After the first overtone of each pipe, every second overtone of the first pipe matches every third overtone of the second pipe. c. After the first overtone of each pipe, every third overtone of the first pipe matches every second overtone of the second pipe. d. After the first overtone of each pipe, every second overtone of the first pipe matches every fourth overtone of the second pipe. e. After the first overtone of each pipe, every third overtone of the first pipe matches every fourth overtone of the second pipe.
Our Sun will likely undergo a nova event in about 5 billion years
Indicate whether the statement is true or false
Which terrestrial world experiences the greatest change between its daytime temperature and night temperature?
A) Mercury B) Venus C) Earth D) Mars E) the Moon
How do astronomers think Jupiter generates its internal heat?
A) chemical processes B) radioactive decay C) nuclear fusion in the core D) by contracting, changing gravitational potential energy into thermal energy E) internal friction due to its high rotation rate