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

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

________ has the lowest density of all the planets in the Solar System.

A. Saturn B. Mercury C. Jupiter D. Uranus E. Pluto

Physics & Space Science

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

Physics & Space Science