Why have most extrasolar planets detected with the transit method been found with orbits fairly close to their host stars?
A) They transit more frequently and are more likely to be detected in the short time we have been searching for them.
B) More of the starlight is blocked by the planet when it transits the star.
C) The wavelength shift of the star's spectrum is larger.
D) The closer to a star, the hotter and therefore brighter the planet is.
E) Planets that are close to a star are heated up and therefore larger.
A) They transit more frequently and are more likely to be detected in the short time we have been searching for them.
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A 30.0-kg object has a drag force with a magnitude proportional to the square of its speed. The object falls with an acceleration 4.00 m/s2 downward when it is falling downward at 70.0 m/s. What is its terminal velocity?
A) 110 m/s B) 157 m/s C) 91.0 m/s D) 172 m/s E) 108 m/s
Monochromatic light from a He-Ne laser (l = 632.8 nm) is incident on a diffraction grating containing 5 000 lines/cm. Determine the angle of the first-order maximum
a. 18.4° b. 39.2° c. 14.6° d. 27.7° e. 13.9°
The intensity of magnetization divided by the applied magnetic field strength is equal to the magnetic _________.
Fill in the blank(s) with the appropriate word(s).
What evidence is there that Earth has been struck by large meteorites?
What will be an ideal response?