The baryon having which of the following quark contents has electric charge -e?
A. csd
B. dds
C. uud
D. bbc
B. dds
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Explain how a photon is generated in the core of the Sun and how it is transported out from the Sun
What will be an ideal response?
What two quantities did Edwin Hubble plot against each other to discover the expansion of the Universe?
A) velocity and distance B) luminosity and distance C) velocity and temperature D) luminosity and temperature E) age and distance
A driver in a 1000 kg car traveling at 20 m/s slams on the brakes and skids to a stop. If the coefficient of friction between the tires and the horizontal road is 0.80, how long will the skid marks be?
A) 26 m B) 21 m C) 33 m D) 24 m
The Planck era refers to the time period
A) before the Big Bang. B) before the Planck time. C) after the Planck time. D) after inflation. E) after the GUT era.