Explain how the essential features of special relativity imply that a beam of light from a fast moving spaceship will always be observed to moving at the speed of light
What will be an ideal response?
The essential features are: The laws of physics are the same everywhere, there is no absolute motion, and time is a separate dimension. In order for the laws of physics to be the same everywhere, the speed of light is a constant of nature. That means that it will always be the same independent of the motion of the source or observer.
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The net direction in which electrons flow through a circuit is:
A) the direction of the conventional current. B) opposite of the direction of the conventional current.
Can an element decay "forward" in the periodic table, to a higher atomic number?
A) No, in fact elements cannot alter their atomic number by radioactive decay. B) No, but an element can decay to a lower atomic number. C) Yes, by alpha decay. D) Yes, this can occur by means of both beta decay and alpha decay. E) Yes, by beta decay.
An object moving in a circle undergoes centripetal acceleration
a. True b. False Indicate whether the statement is true or false
Sound is a(n) ______________ wave
Fill in the blank(s) with correct word