If, in the figure below, I1 = 2 A and I2 = 6 A, which of the following is true?
2
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A carbon-14 nucleus decays to a nitrogen-14 nucleus by beta-minus decay. How much energy (in MeV) is released if carbon-14 has a mass of 14.003242 u and nitrogen-14 has a mass of 14.003074 u? (1 u = 931.5 MeV/c2)
A) 0.0156 MeV B) 0.156 MeV C) 1.56 MeV D) 15.6 MeV
Two toy cars (16 kg and 2 kg) are released simultaneously on an inclined plane that makes an angle of 30° with the horizontal. Which statement best describes their acceleration after being released?
A) The 16-kg car accelerates 8 times faster than the 2-kg car. B) The 2-kg car accelerates 8 times faster than the 16-kg car. C) Both cars accelerate at a rate of 8?g. D) Both cars accelerate at a rate of 0.866 g. E) Both cars accelerate at a rate of g sin(30°).
A particle (mass = 2.0 mg, charge = ?6.0 ?C) moves in the positive direction along the x axis with a velocity of 3.0 km/s. It enters a magnetic field of 
mT. What is the acceleration of the particle?
A.
m/s2B.
m/s2C.
m/s2D.
m/s2E.
m/s2Arrange the atoms calcium, barium, chlorine, and bromine in order of increasing atomic radius