Until recently, most astronomers thought elliptical galaxies were shaped like oblate spheroids
Indicate whether the statement is true or false
T
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How large a force is necessary to stretch a 2.0 mm radius steel wire (Y = 2.0 × 10^11 N/m2) by 2.0%?
a. 5.0 × 10^4 N c. 2.5 × 10^3 N b. 2.5 × 10^4 N d. 1.3 × 10^4 N
Consider two uniform solid spheres where one has twice the mass and twice the diameter of the other. The ratio of the larger moment of inertia to that of the smaller moment of inertia is
A) 10. B) 8. C) 2. D) 6. E) 4.
When Jean standing on slippery ice catches her leaping dog Daisy, the momentum of both Jean and Daisy after the catch is
A) greater than their combined momentum before the catch. B) equal to their combined momentum before the catch. C) somewhat less than their combined momentum before the catch.
The prediction from special relativity that the length of a moving object will be shortened in the direction of motion is called __________
Fill in the blank(s) with correct word