Which one of the following numbers is the correct magnification produced by a plane mirror?
A) 1/4 B) 1 C) 2 D) 3/2 E) 1/2
B
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Imagine we have a planet identical to Jupiter around another star, with the exception that its orbit is much closer. How would its size compare to Jupiter?
A) it would be the same size B) it would be larger C) it would be much smaller D) it would be slightly smaller
A spaceship moving past the Earth with a speed of 0.800c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock. According to observers on Earth who see the flashes, the time interval they measure is
A. 13.4 s B. 16.7 s C. 12.5 s D. 9.70 s E. 6.03 s
In the first law of thermodynamics, Q is the heat gained by the system, that is, Q is positive if the system gains heat
Indicate whether the statement is true or false
Why do nocturnal animals usually have large pupils in their eyes? How is that related to the way astronomical telescopes work?
What will be an ideal response?