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Q. Suppose the film show in the figure has an index of refraction of 1.36 and is surrounded by air on both sides. Find the minimum thickness other than zero that will produce constructive interference in the reflected light when illuminated by light of wavelength 500 nm.
A river has a steady speed of 0.42m/s. A student swims upstream a distance of 1 km and swims back to the starting point. If the student can swim at a speed of 1.25 m/s in still water, how long does the trip take.
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
A disc of mass M and radius R is rolling purely without slipping with velocity V on a flat horizontal floor. When it hits a step in the floor of height R/2.what is the velocity of the center of mass of the disc just after impact.
A 200 gm block of metal is heated to 100 degrees Celcius in boiling water. This block is after placed in an aluminum calorimeter cup (mass - 30gm; c - .22 cal/g degrees C) containing 180 gm of water at 20 degrees C.
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
To which, according to the rotational analog of Newton's second law, is the angular acceleration experienced by an object directly proportional?
An object with a net charge of 22 µC is placed in a uniform electric field of 600 N/C, directed vertically. What is the mass of object if it floats in this electric field.
A proton moves perpendicularly to a uniform magnetic field at 5.0 107 m/s and exhibits an acceleration of 1.0 1013 m/s2 in the +x-direction when its velocity is in the +z-direction. find the magnitude and direction of the field.
A long, straight wire carries a 25.0 current. An electron is fired parallel to this wire with a speed of 280 in the same direction as the current, 2.30 from the wire.
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
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