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Illustrated a procedure to forecast the decay rates of isotopes with known long average lifetimes. Lifetimes of the many U isotopes vary from microseconds to gig years. F has only one stable isotope while Sn has 10. Can Standard Model principles be used to predict the stability of isotopes and the average lifetimes for unstable isotopes, or can this only be done by measurement?
A vertical spring of spring constant 115N/m supports a mass of 75kg. The mass oscillates in a tube of liquid. Estimate the damping constant b
A top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top. The string has alength of 56 cm and is wound around thetop at a spot where its radius is 1.2 cm.The thickness of the string is negligi..
A vertical spring has one end attached to the ceiling and a 2.50-kg fish attached to the other one. How far down the fish will drop before starting to come back
A 55 g piece of aluminum at 21 °C is cooled to -196 °C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized
Estimate the resolution of the human eye, limited by diffraction. Find the minimum resolvable separation between two points at a distance of 10 m
A person pulls a toboggan for a distance of 43.6 m along the snow with a rope directed 28.3 ° above the snow. The tension in the rope is 91.3 N. How much work is done on the toboggan by the tension force
A ball rolls down a hill. What causes constant acceleration down the hill? What determines how much acceleration there is (is the angle/incline of the hill a factor)
A satellite of mass 200 kg is orbiting around the Earth with constant speed, in a circular orbit. The centripetal acceleration is am = 0:6 m/s2 . We need to make a correction to its orbit so we fi re its boosts. The fi rst boost creates an instant fo..
two converging lenses having focal lengths of 5.0 cm and 10.0 cm are located 21.0 cm apart. an object is placed 15.0 cm
Consider an element having excited states at 3.6 eV and 4.6 eV used as a gas in the Frank-Hertz experiment. Assume that the work functions cancel out. List all the possible peaks that MIGHT be observed with electron scattering up to an accelerating v..
The catapult on an aircraft carrier can take an aircraft from 0 to 83.1 m/s in 14.5 seconds, at which time the aircraft launches. What is the acceleration of the aircraft when it launches
a charge of -4.0 nc is at the origin and a second charge of 11.0 nc is at x 5.00 m. find the magnitude and direction
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