How is the GAIA mission relevant to the search for extrasolar planets?
A) It can detect planets through the astrometric method.
B) It can obtain moderate-resolution images of extrasolar planets.
C) It can detect planets through the Doppler method.
D) It can detect planets through the transit method.
A) It can detect planets through the astrometric method.
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Thin Lenses: A certain slide projector has a lens of focal length 15.0 cm. This lens forms an image measuring 100 cm × 100 cm on the screen when a slide whose dimensions are 50.0 mm × 50.0 mm is being magnified. How far from the lens should the screen be placed?
Fill in the blank(s) with the appropriate word(s).
An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low-density hot gas
Indicate whether the statement is true or false
A long steel beam has a length of fifty meters on a cold day when the temperature is 0°C. What is the length of the beam on a hot day when T = 40°C? (asteel= 1.1 × 10^-5/°C)
a. 50.044 m c. 50.088 m b. 50.022 m d. 50.0044 m
An ideal transformer has 200 turns on its primary and 12 turns on its secondary. If the power input to the transformer is 120 kW, what is the power output?
A. 0.600 kW B. 7.20 kW C. 10.0 kW D. 120 kW E. 240 kW