In the process of crystallization, the remaining magma becomes _______.
What will be an ideal response?
more and more silica enriched
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What is the escape speed from a planet of mass m and radius r if m = 3.2 × 1023 kg and r = 2.4 × 106 m?
A. 5.5 km/s B. 4.2 km/s C. 5.2 km/s D. 4.8 km/s E. 3.7 km/s
Electric charge is measured in units of
a. coulombs. b. watts. c. volts. d. newtons.
What does angular resolution measure?
A) the angular size of the smallest features that the telescope can see B) the brightness of an image C) the size of an image D) the number of electromagnetic waves captured by an image
Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest changes the final velocity attainable by what factor? Assume all other variables, such as the mass of the rocket and the mass of the fuel, do not change
a. The final velocity stays the same. b. The final velocity doubles. c. The final velocity increases by a factor of 0.693. d. The final velocity increases by a factor of 0.310.