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Skew rays are accepted into a large core diameter (compared with the wavelength of the transmitted light) step index fiber in air at a maximum axial angle of 42°. Within the fiber they change direction by 90° at each reflection. Determine the acceptance angle for meridional rays for the fiber in air.
A chimp jumps up from a trampoline and lands on the ground, 1.2 meters below. the total time taken was .095 secons. what is the maximum height above the ground
A 30kg man climbs to the top of the slide 4m high. He slidesdown to the bottom. What is his kinetic energy at the bottom if there is nofriction on the slide? What is his kenetic energy at the bottom if there isfriction and it does -500J of work on hi..
A carpenter swings a 3-kg hammer so that its speed is 5 m/s just before it strikes a nail. The nail is driven 6 mm into a block of wood.
a 2.5-kg mass is connected to a spring with spring constant k = 150 N/m and unstretched length 19 cm. the pair are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. the mass is set into circular..
A Ferris wheel is moving at an initial angular velocity of 1.0rev/38 second. If the operator then brings it to a stop in 3.5 minute, evaluate the angular acceleration of the Ferris wheel
After an average acceleration of 3.69 m/s2 during 2.41 seconds, your car reaches a velocity of 15.1 m/s. Find the car's initial velocity
steam enters a turbin operating at steady state with a mass flow rate of 4600kg hr-1 . the turbin develops a power
If the 10kg block shown above with the same frictional characteristics and starting from rest slides down the incline in such a way as its height
At what speed (m/s) would a 1140-kg car have the same momentum as a 12,600-kg truck traveling at17.8km/hr,What is the car's change in momentum
The electric potential at a position located a distance of 19.8 mm from a positive point charge of 7.60 x 10-9 C and 14.5 mm from a second point charge is 1.38 kV. Calculate the value of the second charge
The work that the piston does on the gas when the air expands from 0.030 m3 to 0.050m3 is 2020 J. How many moles of gas are in the container?
A child in a boat throws a 5.45-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest
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