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A ray of light is traveling in a glass cube that is totally immersed in water. You find that if the ray is incident on the glass-water interface at an angle to the normal larger than 48.7 o no light is refracted into the water. What is the refractive index of the glass?
A 2100-? resistor and a 1.4-µF capacitor are connected in series across a generator (60.0 Hz, 120 V rms). Determine the average power delivered to the circuit
X rays diffract from a crystal in which the spacing between atomic planes is 0.188 nm. The second-order diffraction occurs at 59.0 degrees. What is the angle of the first-order diffraction?
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 49m diameter loop the loop
1. cut a 1 horizontal slit on the side of the cereal box just below the nutrition information.2. cut a slit across the
A 1.5kg rock is whirled around in a flat circle at the end of an 85cm string. It has a linear speed of 1.80 m/s. What is the centripetal force that is acting on the rock
A toy of mass 0.145kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 300N/m . When the object is a distance 1.15×10-2m from its equilibrium position
A certain Carnot engine produces 200 J of work per cycle, what is the change in entropy of the hot reservoir per cycle
1. the peak power of a 6ft. diameter antenna is 10 watts and its duty cycle is 0.250. the wave length is 0.03mcycle.
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
A person who weighs 620 N stands at x = 5m, right on the end of a long horizontal diving board that weighs 350 N. The diving board is held up by two supports, one at its left end at x = 0, and one at the point x = 2.00 m.
A hollow sphere of inner radius 7.1 cm and outer radius 9.7 cm floats half submerged in a liquid of density 510 kg/m3. Calculate the density of the material of which the sphere is made
A basketball rolls without slipping down an incline of angle ?. The coefficient of static friction is ?s. Model the ball as a thin spherical shell. Find the frictional force acting on the ball
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