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The focal length of a lens is inversely proportional to the quantity (n ? 1), where n is the index of refraction of the lens material. The value of n, however, depends on the wavelength of the light that passes through the lens. For example, one type of flint glass has an index of refraction of nr = 1.572 for red light and nv = 1.605 for violet light. Now, suppose a white object is placed 37.70 cm in front of a lens made from this type of glass. If the red light reflected from this object produces a sharp image 63.40 cm from the lens, where will the violet image be found?
cm from the lens
A man walks south at a speed of 2.00 m/s for 16.0 minutes. He then turns around and walks north a distance 2000 m in 15.0 minutes. What is the average speed of the man during his entire motion
Establish steady-state electric field inside Nichrome wire
A capacitor is consists of two short sections of parallel wires in air. One wire is found to be of the voltage of 58 V, What is the capacitance of the two wires
Use the force or spring constant from part (a), compute the potential energy stored in the spring when the spring is displaced 2.40 cm
Transverse waves with a speed of 59.0 m/s are to be produced on a stretched string. A 4.95-m length of string with a total mass of 0.0600 kg is used. (a) What is the required tension in the string? N (b) Calculate the wave speed in the string if t..
A solid cylinder with a mass of 1.5 kg and a radius of 30 cm rotates about an axis through its center. What is the rotaional inertia of the solid cylinder
An infinite line of positive charge lies along the y axis, with charge density 1.90 microcoulombs/m. Calculate the torque about the midpoint of the dipole
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
A head-on, elastic collision between two particles with equal initial speed vleaves the more massive particle (massm1) at rest. Find the ratio of the particle masses
An 82 kg lumberjack stands at one end of a 355 kg floating log. Both the log and the lumberjack are at rest initially. If the lumberjack now trots toward the other end of the log with a speed of 2.70 m/s relative to the log, what is the lumberjack's ..
Ocean waves (on a particularly nice summer day) move past at 1.8 waves/s. find the speed of the waves
If an electric wire is allowed to produce a magnetic field no larger than that of the Earth .45E-4 T at a distance of 27 cm
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