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A ray of light strikes a block of some transparent material at an angle of incidence of 60degrees.
a. If the angle of refraction is 45degrees, determine the index of refraction of the material, assuming the ray travels in a vacuum before striking the block.
b. Find the speed of light in the block.
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
Use conservation of energy to calculate the speed of the alpha particle at infinity. m/s (e) If the two protons are released from rest and the alpha particle remains fixed, calculate the speed of the protons at infinity. m/s
Boxes are transported from one location to another in the ware-house by means of a conveyor belt that moves with a constant speed of 0.50m/s. At a certain location the conveyor belt moves for 2.00 m up an incline that makes an angle of 10° with the h..
A proton starting from rest is accelerated in a cyclotron to a speed of 3.0•106 m/s. Find the work done on a proton by the electrical force of the cyclotron.
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, What is the compressional strain of the humerus
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 7.00 km from the source, What is the average power radiated by the source
A "swing" ride at a carnival consists of chairs that are swung in a circle by 18.5 m long cables attached to a vertical rotating pole, Find the speed of the chair
A wheel with radius 43.9 cm rotates 4.27 times every second. Find the period of this motion.
The 87?F capacitor in a defibrillator unit supplies an average of 6500 W of power, To what voltage is the capacitor charged
A child has a temperature of 101F. If her total skin area is 18 m2, find the energy loss per second due to radiation, assuming the emissivity is 1
A circular conducting loop with a radius of 0.30 m and a small gap filled with a 10.0 ohm resistor is oriented in the xy-plane. what is the magnitude of the current that will be caused to flow in the conductor
A 5.56 10-5 H solenoid is constructed by wrapping 62 turns of wire around a cylinder with a cross-sectional area of 8.30 10-4 m2 , Determine the change in the length of the solenoid.
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