Which of the following boxes represents a suspension?
A) Only A represents a suspension.
B) Only B represents a suspension.
C) Only C represents a suspension.
D) Each of these could represent a submicroscopic portion of a suspension.
Answer: D
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Which one of the following mineral groups exhibits a sheet-like silicate structure?
pyroxenes feldspars carbonates micas
The processes responsible for virtually all surface geology are
A) convection, conduction, and radiation. B) impact cratering, volcanisms, tectonics, and erosion. C) accretion, differentiation, and radioactive decay. D) eruptions, lava flows, and outgassing.
An object is thrown upwards with a speed of 13 m/s. How long does it take to reach a height of 4.0 m above the projection point while descending?
A) 0.42 s B) 1.2 s C) 2.3 s D) 3.1 s E) 4.2 s
Earth observes a rocket move away at 0.370c. The rocket is designed to launch a projectile at 0.505c relative to the rocket
(a) Fired straight ahead, what is the projectile speed observed from Earth? (b) Launched to the rear, what is the projectile speed observed from Earth?