A light ray bends when it goes from one medium to another because of __________
Fill in the blank(s) with correct word
refraction
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A series of ocean waves, 7.0 m between crests, move past at 4.0 waves/s. Find their speed
a. 1.8 m/s b. 7.0 m/s c. 11.0 m/s d. 28 m/s e. 3.0 m/s
A type B9 star is hotter than a type A0
Indicate whether the statement is true or false
A microscope has an objective lens of focal length 1.4 mm and an eyepiece of focal length 20 mm, adjusted for minimum eyestrain. A blood sample is placed 1.5 mm from the objective. How far apart are the lenses?
A) 20 mm B) 21 mm C) 23 mm D) 33 mm E) 41 mm
A charge of 40 pC is distributed on an isolated spherical conductor that has a 4.0-cm radius. Point A is 1.0 cm from the center of the conductor and point B is 5.0 cm from the center of the conductor. Determine the electric potential difference VA - VB
a. +1.8 V b. +29 V c. +27 V d. +7.2 V e. +9.0 V