Comet nuclei contain _____
A) carbon monoxide
B) nonvolatile liquids
C) molten iron
D) sodium chloride
A
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Initially, scientists detected lower than the expected number of neutrinos from the Sun
a. True b. False Indicate whether the statement is true or false
Which of the following is an example in which you are traveling at constant speed, but not at constant velocity?
A) rolling freely down a hill in a cart, traveling in a straight line B) driving backward at exactly 50 km/hr C) driving around in a circle at exactly 100 km/hr D) jumping up and down exactly 60 times per minute E) none of the above
While it has some high volcanoes, most of Venus is relatively ________ in elevation
Fill in the blank(s) with correct word
This diagram shows how light from a binary star system would travel to Earth if the speed of light were not constant. What is its observational significance?
A) It tells us that if the speed of light were not the same for everyone, then we would not necessarily see binary stars as distinct objects. B) It shows that time runs slower for fast-moving objects. C) It shows that motion is relative. D) It shows that observers in different reference frames will not necessarily agree when two events are simultaneous.