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A thin film of polystyrene is utilized as an antireflective coating for fabulite (known as the substrate). The index of refraction of the fabulite is 2.409 and the index of refraction of the polystyrene is 1.49.
What is the minimum thickness of film required? Suppose that the wavelength of the light in air is 520 nanometres.
A 75 kg man jumps from an airplane. When his parachute deploys, it exerts a 500 N force on the man at an angle of 30 degrees with respect to vertical
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. How much work is done by the gravitational force on the crate
A luggage lock, like the one shown above, has a 3-digit combination set with 3 dials, each of which has 10 settings (0-9), What is the probability of dialing the correct combination in one try by chance?
A circuit contains six 290 lamps and a 18 heater connected in parallel. The voltage across the circuit is 120V. If the circuit has a 11A fuse, will the fuse melt if all the lamps and the heater are on.
A block of mass M = 1.00 kg contains a coiled spring and a ball of mass m = .250 kg. The spring is released when the ball block system is at rest on the edge of a frictionless plane inclined 20 degrees from the horizontal. The ball, initially 2.00..
He slides so that his speed is zero just as he reaches the base. Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
An infinite non conducting sheet has a surface charge density σ = +5.80 pC/m2. (a) How much work is completed by electric field because of the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.56..
water is moving with a speed of 2.3 ms through a perfectly sealed long pipe with a cross sectional area of 5 cm2. the
A helicopter (m=1250 kilogram) is cruising at a speed of 25.0 m/s at an altitude of 185 meter. Find the total mechanical energy of the helicopter
two kilograms of water execute a carnot power cycle inside a piston-cylinder device. during isothermal expansion water
A helicopter propeller blade starts from rest and experiencesa constant angular acceleration of 24.0 rad/s2. What is the speed of apoint on the blade 5.45 m fromthe axis of rotation when the blade has completed 18 revolutions?
A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates while a constant force acts on it. How much work is done by the force on the coin during the displacement
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