A meter stick having a rest mass of 1 kg moves past you. Your measurements show it to have a mass of 2 kg and a length of 1 m. How is the stick oriented, as observed by you?
A) perpendicular to its direction of motion
B) parallel to its direction of motion
C) It is impossible to say anything about the orientation without further information.
D) Nonsense--if the stick's mass has increased to 2 kg, then it must be longer than 1 m.
A
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Structure 1 with member BC of length L/2 has force P1 applied at joint C. Structure 2 with member BC of length L has force P2 applied at C. Both structures have constant flexural rigidity EI. The required ratio of the applied forces P1/P2 so that joint B reactions RB1 and RB2 are equal is approximately:
(A) 1
(B) 5/4
(C) 3/2
(D) 2
Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, we breathe in at least one of them each
A) single breath. B) day. C) month. D) ten years. E) can't say for some people breathe a few of Caesar's atoms daily, while others never.
What do we mean by a mass extinction?
A) the extinction of large animals, such as dinosaurs B) the extinction of a large fraction of the world's plant and animal species in a relatively short period of time C) an extinction caused by the impact of an asteroid or comet D) the extinction of any species of plant or animal that has mass
Process of Science: Devise an experiment you could conduct (using any technology you can dream up—it doesn't have to already exist) to test a prediction of special relativity
What will be an ideal response?