The mass of a black hole concentrated in an infinitesimally small volume with zero radius, is known as a(n) _______________
Fill in the blank(s) with correct word
singularity
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In designing buildings to be erected in an area prone to earthquakes, what relationship should the designer try to achieve between the natural frequency of the building and the typical earthquake frequencies?
A) The natural frequency of the building should be exactly the same as typical earthquake frequencies. B) The natural frequency of the building should be very different from typical earthquake frequencies. C) The natural frequency of the building should be almost the same as typical earthquake frequencies but slightly higher. D) The natural frequency of the building should be almost the same as typical earthquake frequencies but slightly lower.
Which of these would support the capture theory of the Moon's origin?
A) the Caloris Basin on Mercury B) the retrograde orbit and large orbital inclination of Neptune's moon Triton C) the rings of all the jovians lying around their equators D) the Pluto-Charon system E) the four large moons of Jupiter orbit its equator
The unique feature of Neptune is:
A) that its rotational axis is tilted 98 degrees. B) that it rotates in a retrograde sense. C) that its atmosphere rotates more slowly than its interior. D) that it has no ring system. E) its banded cloud surface.
No evidence of impact craters has been found on Venus
Indicate whether the statement is true or false