Steep-sided stratovolcanoes are made from lava that
A) is as runny as liquid water.
B) has a medium viscosity.
C) has a high viscosity.
D) can have any viscosity.
Ans: C) has a high viscosity.
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Simple Harmonic Motion: An object is oscillating on a spring with a period of 4.60 s. At time t = 0.00 s the object has zero speed and is at x = 8.30 cm. What is the acceleration of the object at t = 2.50 s?
A. 1.33 cm/s2 B. 0.784 cm/s2 C. 11.5 cm/s2 D. 14.9 cm/s2 E. 0.00 cm/s2
The portrayal of nearly all aliens in movies and on TV as being humanoid is
A) based on the fact that it would be impossible for us to understand anything that wasn't very similar to a human B) realistic because the human form has several unique qualities that make it a good choice for any advanced civilization C) based on the fact that the human form is the only possible form for an advanced civilization D) probably unrealistic because the human form is most likely a result of the particular conditions and events that occurred on the Earth
Temperature variation of different parts of a person's body can be detected by analyzing the emission pattern of which type of electromagnetic radiation?
a. microwave b. infrared c. ultraviolet d. x-rays
Why did they scientists originally believe that the Sun was near the Milky Way's center?