If we say that a material is opaque to ultraviolet light, we mean that it ________

A) emits ultraviolet light B) absorbs ultraviolet light
C) reflects ultraviolet light D) transmits ultraviolet light


B

Physics & Space Science

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Which one of the words below is a name for a type of galaxy in the Hubble classification system?

a. red giant b. visual c. spiral d. 21-centimeter e. statuesque

Physics & Space Science

A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts.If two slide projectors are connected in parallel across the same 120-volt source, the current drawn from the source remains at 6 amperes

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

For what wavelength does a 100-mW laser beam deliver 1.6 × 1017 photons in one second? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s)

A) 320 nm B) 340 nm C) 330 nm D) 350 nm

Physics & Space Science

The universe's density, compared to the critical density, determines the ________ of space

Fill in the blank(s) with correct word

Physics & Space Science