A radioactive nuclide of atomic number Z emits an electron, then the daughter nuclide emits a gamma ray. What is the atomic number of the resulting nuclide after both processes?
A) Z - 1 B) Z + 2 C) Z - 3 D) Z + 1 E) Z - 2
D
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First Law of Thermodynamics: A sealed rigitd tank contains 30 moles of an ideal gas, at an initial temperature of 270 K. The pressure of the gas is increased until the final pressure equals 1.40 times the initial pressure. The heat capacity at constant pressure of the gas is 32.0 J/mol ? K. What is the change in the internal (thermal) energy of the gas during this process? (R = 8.31 J/mol ? K)
A. 77 kJ B. 100 kJ C. 130 kJ D. -50 kJ E. -23 kJ
Which of the following wavelengths could NOT be present as a standing wave in a 2-m-long organ pipe open at both ends?
a. 4 m b. 2 m c. 1 m d. 0.89 m e. 0.5 m
Our current calendar is the______________ calendar
Fill in the blank(s) with correct word
A pocket of air moving south in the Northern Hemisphere will be deflected ________ by the rotation of Earth?
A. to the east B. to the south C. upward to a higher altitude D. downward toward the surface E. to the west