The quantity of work equal to one joule is also equivalent to which of the following?
a. watt
b. watt /s
c. watt / s
d. watt /s2
c
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The kinetic energy of the bob on a simple pendulum swinging in simple harmonic motion has its maximum value when the displacement from equilibrium is at what point in its swing?
a. zero displacement b. 1/4 the amplitude c. 1/2 the amplitude d. equal the amplitude
The most common stars are
a. supergiants. b. giants. c. upper (more luminous) main sequence stars. d. white dwarfs. e. lower (less luminous) main sequence stars.
Diffraction Gratings: A diffraction grating with 396 lines/mm is illuminated with light of wavelength 343 nm. What is the angular separation between the two second-order bright fringes?
A. 31.5° B. 15.8° C. 32.9°
Which of these is NOT true about supernovae?
A) Type I involves carbon detonation. B) Type II involves formation of iron in the core. C) The two types are both closely related to evolution of white dwarfs. D) The one in 1987 in the Large Magellanic Cloud was of type II. E) Neutronization is vital in understanding type II core collapse.