Which of the following primarily determines the resolution of a telescope?
a. the barrel length
b. the focal length of the objective
c. the diameter of the objective
d. the diameter of the eyepiece
c
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After an earthquake, an S-type seismic wave travels with a velocity of about 10 km/s and reaches another part of Earth in about 10 minutes. How far has the S-type wave traveled?
A. 1,000 km B. 60 km C. 600 km D. 100 km E. 6,000 km
A hole of radius 1.0 mm occurs in the bottom of a water storage tank that holds water at a depth of 15 m. At what rate will water flow out of the hole?
What will be an ideal response?
What role does the main sequence mass of the star play in the formation of heavy elements in the giant stage?
What will be an ideal response?
Planet Zero has a mass of 4.0 × 10^23 kg and a radius of 2.0 × 10^6 m. A 10-kg space probe is launched vertically from the surface of Zero with an initial kinetic energy of 8.0 × 10^7 J. What maximum distance from the center of Zero is achieved by the probe?
a. 3.2 × 10^6 m b. 4.0 × 10^6 m c. 6.0 × 10^6 m d. 5.0 × 10^6 m e. 2.5 × 10^6 m