At the Earth’s orbital distance, the intensity of the solar radiation is approximately 1400 
What is the value for the rms Electric field strength in solar radiation?
A. 726 V/m
B. 363 kV/m
C. 527 kV/m
D. 513 kV/m
A. 726 V/m
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A 90.0 kg person is sitting in a boat at rest with a mass of 100 kg. In the boat is a stone with a mass of 5.00 kg. The person throws the stone at 4.00 m/s horizontally in the NORTH direction. The kinetic energy of the boat and person after the throwing of the stone is
A. 5.20 J. B. 40.0 J. C. 1.05 J. D. 2.75 J.
A crate is given an initial speed of 3.0 m/s up the 25.0° plane shown in Fig. 5–33.
(a) How far up the plane will it go?
(b) How much time elapses before it returns to its starting point?
Assume the following stars all have the same mass as our Sun. Which one does not have fusion occurring in its central core?
A) a red giant B) a main-sequence star C) a helium core-fusion star D) a main-sequence star in a binary star system
Why electrons don't spiral into atomic nuclei is best explained by their
A) particle nature. B) wave nature. C) both of these D) neither of these