The thickness of the photosphere is about 100 times the diameter of the Earth, and large sunspots are larger than our whole planet
Indicate whether the statement is true or false
TRUE
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When Mars is located directly behind the Earth with respect to the Sun in its orbit, it is
a. at the midpoint in the sky between east and west at sunset. b. at the midpoint in the sky between east and west at midnight. c. at the midpoint in the sky between east and west at sunrise. d. at the midpoint in the sky between east and west at noon. e. not visible in the night sky.
Diffraction Gratings: A beam of light of wavelength 600 nm is incident normally on a diffraction grating with a spacing between slits of 1.70 × 10-4 cm. At what angle away from the centerline does a first-order maximum occur?
A. 10.5° B. 12.1° C. 16.4° D. 18.2° E. 20.7°
Electrical forces between charges are strongest when the charges are
a. far apart b. close together c. the electrical force is constant everywhere
The mass of a ball moving at 3 m/s with a momentum of 48 kg m/s is
A) 4 kg. B) 12 kg. C) 16 kg. D) 144 kg. E) none of these