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Lens is made with a focal length of -40 cm using a material with index of refraction 1.50. A second lens is made with the SAME GEOMETRY as the first lens, but using a material having refractive index of 2.00. What is the focal length of the second lens?
A wave pulse travels down a slinky. The mass of the slinky is m = 0.86 kg and is initially stretched to a length L = 7.8 m. What is the average speed of a piece of the slinky
A certain radioisotope has a half-life of 11.0 days. What fraction of an initial sample of this isotope remains after 22.7 days
A star ship approaches its home planet at a speed of 0.1c. When it is 5.4×107km away, it uses its green laser beam (=540nm) to signal its approach. How long does the signal take to travel to the home planet? At what wavelength is the signal detected ..
A 740 kg spacecraft has total energy -5.3 * 10^11 J and is in circular orbit about the Sun. Find its orbital radius
An interferometer is set up to carefully measure changes in length. The laser source has a wavelenth of 632nm and the arms of the device are 11 m long
You are examining a flea with a converging lens that has a focal length of 4.00 cm. how far is the flea from the lens
If all of this work is supplied by the initial kinetic energy of the fluid mass, then how fast must the mass have been moving initially
q1. a 5.00-g bullet is shot through a 0.96-kg wood block suspended on a string 2.70 m long. the center of mass of the
Four equal charges of +4.9×10-6 C are placed on the corners of one face of a cube of edge length 7.0 cm. calculate the magnitude of the force on the charge
A piece of metal, when weighed in air has a weight of 20.7 newtons. When completely submerged in blood( density of blood=1060kg/m^3) the metal has a weight of 12.7 newtons. What is the density of the the metal
A variable capacitor used in an RLC circuit produces a resonant frequency of 4.50 MHz when its capacitance is set to 14.9 pF. What will the resonant frequency be when the capacitance is increased to 335 pF
A block of mass m = 2.00 kg is attached to a spring of force constant k = 4.65 102 N/m that lies on a horizontal frictionless surface, Find the speed the block has as it passes through equilibrium
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