scientists plan to place detection devices outside earth's atmosphere to detect radiations from a star. which of the following best explains the type of detection device that the scientists would use?
a radar, because high frequency microwaves are limited to the region outside earth's atmosphere
special cameras, because high frequency uv rays are emitted by objects at very high temperatures
special cameras, because high energy uv rays are emitted by objects having very high mass
a radar, because high energy microwaves are produced from very hot objects
Answers: 3
Chemistry, 21.06.2019 22:30, Arealbot
Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.
Answers: 2
Chemistry, 22.06.2019 10:30, angemango3423
What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5
Answers: 1
Chemistry, 22.06.2019 18:00, jessicannoh5965
The fact that the total amount of energy in a system remains constant is a(n)
Answers: 1
scientists plan to place detection devices outside earth's atmosphere to detect radiations from a st...
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