Author Question: Objects moving at relativistic speeds appear to observers at rest to be A) stretched. B) ... (Read 50 times)

joe · **on:** Jul 29, 2018

Objects moving at relativistic speeds appear to observers at rest to be

A) stretched.
B) shrunken.
C) either depending on direction of motion.
D) none of the above

Question 2

In designing buildings to be erected in an area prone to earthquakes, what relationship should the designer try to achieve between the natural frequencies of the building and the typical earthquake frequencies?

What will be an ideal response?

xiaomengxian · **Reply #1 on:** Jul 29, 2018

Answer to Question 1

Answer: B

Answer to Question 2

If possible, the natural frequencies of the building should be much smaller than the typical earthquake frequencies; this will minimize the amplitude of the oscillations of the building.