Which of the following statements are true concerning specialrelativity?

Check all thatapply.

Check allthat apply.

	Clocks moving relative toan observer are measured by that observer to run more slowlycompared to clocks at rest.
	The laws of physics havethe same form in all inertial reference frames.
	Light propagates throughempty space with a definite speed independent of the speed of thesource or observer.
	Time can no longer beregarded as an absolute quantity.
	The length of an object ismeasured to be shorter when it is moving relative to the observerthan when it is at rest.