According to Heisenberg, as the uncertainty in the measurement of a particle's momentum is increased by a factor of 2, by what factor is the uncertainty in that particle's position changed?
a. 1
c. 1/2
b. 4
d. 2
C
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What are the most common type of meteorite?
a. chondrites
b. chondrules
c. iron meteorites
d. carbonaceous chondrites
e. calcium-rich carbonites
The rms speed of the molecules of a gas is 200 m/s at a temperature 300 K. What is the rms speed of the molecules at 500 K?
A) 155 m/s B) 333 m/s C) 258 m/s D) 556 m/s E) 800 m/s
You drive 6.0 km at 50 km/h and then another 6.0 km at 90 km/h. Your average speed over the 12 km drive will be
A) greater than 70 km/h. B) equal to 70 km/h. C) less than 70 km/h. D) exactly 38 km/h. E) It cannot be determined from the information given because we must also know directions traveled.
The ____ regions contain only old stars. The younger ones have ended their lives. And the ____ regions contain both young and old stars and the young, more luminous ones dominate the light.
A.) Red, blue. B.) Red, red. C.) Blue, blue. D.) Blue, red.