A beaker is filled to the 500 ml mark with alcohol. What increase in volume (in ml) does the beaker contain when the temperature changes from 5° C to 30° C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) balcohol = 1.12 × 10^-4/°C
a. 0.47
b. 0.93
c. 1.4
d. 1.7
e. 2.5
C
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Most stars on the H-R diagram are on the ____________________
Fill in the blank(s) with correct word
A transverse wave
a)cannot travel through a vacuum. b)is representative of light and other electromagnetic waves. c)can only oscillate at low frequencies. d)is made up of a series of compressions and rarefactions.
The two main distinguishing characteristics of an air
mass are a) size and shape. b) pressure and wind speed. c) cyclonic rotation and speed of movement. d) temperature and moisture content
A light ray in air is incident on an air-to-glass boundary at an angle of 30.0° and is refracted in the glass at an angle of 16.7° with the normal. Find the index of refraction of the glass
a. 1.74 c. 1.23 b. 1.40 d. 2.13