Multiple choice A. Acceleration is the second derivative of which quantity with
ID: 964371 • Letter: M
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Multiple choice A. Acceleration is the second derivative of which quantity with respect to time? a) mass b) distance c) velocity d) kinetic energy B. The Hamiltonian function H represents: a) the total momentum of a system b) kinetic energy-potential energy c) kinetic energy + potential energy d) momentum in the x direction - momentum in the y direction C. The spectroscope, invented by Bunsen and Kirchoff in 1860, eventually evolved into which modern instrument? A) NMR spectrometer b) mass spectrometer c) high pressure liquid chromatograph d) atomic absorption spectrometer D. Which part of Dalton's atomic theory was later shown to be incorrect? a) atoms are indivisible b) atoms may combine to form molecules c) atoms of each element have a characteristic mass d) atoms of different elements are different from each otherExplanation / Answer
A:Acceleration is the rate of change of velocity with time means it is the second derivative of velocity with respect to time.
a= dV/dT
Thus the correct answer is C)
B The hamiltontion function H represents the total energy of the system. Total energy of system means Kinetic energy + potential energy. Thus the correct answer is C)
C The spectroscope invented by Bunsen and Kirchoff in 1860 , eventually evolved into atomic absorption spectrometer. Thus the correct answer is D)
D The following part of Dalton’s atomic theory was later shown to be incorrect:
Atoms of each element have a characteristic mass is incorrect
After the discovery of isotopes which means that in some atoms of the same element, there are different numbers of neutrons s they have different mass number like H has three isotopes H1, H2, H3 means H has three mass number 1,2 and 3. Thus the correct answer is C)
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