The national institute of science and technology kinetics database lists the rate constant of a reaction as at 298K. The rate constant has to be determined in the units of and . Also, the order of the reaction to be given.
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1.11 - Neptunium. In the fall of 2002, scientists at Los Alamos National Laboratory determined that the critical mass of neptunium-237 is about 60 kg. The critical mass of a fissionable material is the minimum amount that must be brought together to start a nuclear chain reaction. Neptunium-237 has a density of 19.5 g/cm". What would be the radius of a sphere of this material that has a critical mass?
A car goes into a skid and comes to a gradual stop, accelerating at a constant rate to do so. At the midpoint of the skid, how much of its kinetic energy has the car lost (as a percentage, give % as the units)?
A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 8.6 m/s. Also, it has an acceleration in the direction parallel to the walls of 4.2 m/s 2 . 18.4 m 4.2 m/s 2 8.6 m/s What will be its speed when it hits the opposing wall? Answer in units of m/s.
