Conner conducts the following experiment. He places a bell in a vacuum jar. During his first trial, he leaves the bell outside the jar. He sees the bell vibrating and he hears the bell ringing. During his second trial, he removes the air from the vacuum jar. He sees the bell vibrating but he does not hear the abell ringing. What does this experiment tell the student about waves?
A. Light waves are electromagnetic waves and sound waves are mechanical waves.
B. Light waves are mechanical waves and sound waves are electromagnetic waves.
C. Both light waves and sound waves need a medium to travel through.
D. Neither light nor sound waves need a medium to travel through.
Answers: 2
Chemistry, 22.06.2019 06:00
Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.
Answers: 2
Chemistry, 22.06.2019 18:00
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Conner conducts the following experiment. He places a bell in a vacuum jar. During his first trial,...
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