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1. If we could somehow pull one equivalent (one faraday) of positive charge in a small ball 10 cm away from one equivalent of negative charge, e.g., a mole of chloride ions, on another small ball, what would the force (in N) pulling the two balls towards each other be? How does this force compare to that exerted on the tracks by a 20 ton train locomotive on the Earth's surface due to the Earth's the gravitational force? (Imagine trying to hold the balls apart.)
2. Multiphoton laser ionization is a process in which a high power laser induces ionization of a molecule by causing it to absorb many identical photons at the same time and pool their energy to attain enough to reach the ionization potential, in other words enough to knock an electron completely off the molecule. The ionization potential of a nitrogen molecule is approximately 15.5 eV. What is the minimum number of photons from the beam of a 1054 nm high power laser that must be absorbed by a nitrogen molecule simultaneously to cause multi-photon ionization?
an 8.17g bullet is fired into a 325g block that is initially at rest at the edge of a table of h 1.06 m height.a the
Suppose that the amount of heat removed when 1.6 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze
Two point charges are separated by a distance r and repel each other with a force F. what is the magnitude of the force of repulsion between them
two coupled identicle pendula of mass 3 kg are oscillating having started at rest with positions x10 0.22m and x20
A "T-shaped" body is made from two uniformrods of length 2a by joining the end of one to the midpoint of the other in aperpendicular direction. Find the centre of mass of the solid
A cylindrical storage tank has a radius of 1.20 m. When filled to a height of 4.05 m, What is the density of the solvent
A ball is launched straight up with a speed of 18.32 miles per hour. What is the maximum height reached in meters
In the Davisson-Germer Experiment, what will be Bragg Scattering angle Φ (first order) for an electrons? beam when scattered / diffracted from the surface of Ni-crystal with atomic- planes spacing D = 0.215 nm and the kinetic energy of the e-beam ..
A child on a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 17.3 s how long is the slope? Assume that frictional forces may be neglected
The weight of passengers on a roller coaster increases by 60% as the car goes through a dip with a 38m radius of curvature
In a 1.25 T magnetic field directed vertically upward, a particle having a charge of magnitude 8.50 ?C, what is the sign of the charge of this particle
Two astronauts on opposite ends of a space ship are comparing lunches. One has an apple, the other has an orange. What is the final speed and direction of the apple
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