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Physics, 22.06.2019 01:50
Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.
Answers: 2
Physics, 22.06.2019 06:30
What are similarities and differences between refraction, reflection, diffraction and absorption?
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Physics, 22.06.2019 13:00
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
Answers: 2
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
Biology, 13.10.2019 19:30
Advanced Placement (AP), 13.10.2019 19:30
Chemistry, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30
History, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30
Chemistry, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30
Mathematics, 13.10.2019 19:30