How many minor planets are known to exist in the solar system, using today's classification system?
a. 1
b. 3
c. 2
d. 4
b
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Besides direct formation of a black hole in a hypernova, some think that mergers between neutron stars can create even longer-lived gamma ray bursts as well
Indicate whether the statement is true or false
________ has the lowest density of all the planets in the Solar System.
A. Saturn B. Mercury C. Jupiter D. Uranus E. Pluto
A silicon monoxide thin film (n = 1.45) of thickness 77.6 nm is applied to a camera lens made of glass (n = 1.55). This will result in a destructive interference for reflected light of what wavelength?
a. 720 nm b. 558 nm c. 450 nm d. 522 nm
A farsighted boy has a near point at 2.0 m and requires eyeglasses to correct his vision. Corrective lenses are available in increments in power of 0.25 diopters
The eyeglasses should have lenses of the lowest power for which the near point is no further than 25 cm. The boy borrows eyeglasses that have a power of +2.75 diopters. With these eyeglasses, the near point of the boy, in cm, is closest to: A) 31 B) 28 C) 33 D) 37 E) 40