How many protons, neutrons, and nucleons are there in a carbon-14 nucleus?
What will be an ideal response?
6 protons, 8 neutrons, 14 nucleons
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A piece of copper of mass 110 g is being drilled through with a 1/2" electric drill. The drill operates at 25.0 W and takes 25.0 s to bore through the copper. If all the energy from the drill heats the copper, find the copper's increase in temperature. ccopper = 387 J/kg/°C
a. 18.4 C° b. 23.5 C° c. 14.7 C° d. 22.0 C° e. 29.4 C°
According to the selection rule, when a photon is emitted or absorbed, transitions can only occur between state with values of ? that differ by
A) five units. B) four units. C) three units. D) two units. E) one unit.
Determine the shape factors between the three surfaces A1, A2, and A3 indicated in the figure.
Neutron stars have:
A) very strong bi-polar magnetic fields. B) weak or non-existent magnetic fields. C) periods of days or weeks. D) monopolar fields that switch polarity every rotation. E) no relation to pulsars.