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A 1-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 64? from the normal.
After entering the glass, what is the ray's angle from the normal?
A 2{rm kg} box rests on a plank that is inclined at an angle of 65 ^circ above the horizontal. The upper end of the box is attached to a spring with a force constant of 390 N/m.
A system consists of two positive point charges, q1 and q2>q1. The total charge of the system is +62.0 x 10^-6 C, Find q1 and q2
A long solenoid has 1.56e+3 turns in length of 40.0 cm. What current has to flow through the solenoid in order to generate a magnetic field
The work function for a metal is 3.8 eV. What is the minimum photon frequency that can just eject an electron from the metal
A technician wraps wire around a tube of length 33 cm having a diameter of 7.9 cm, Find the self-inductance of this solenoid
Assume that the air temperature is 20C and that no wind is blowing. How much time would elapse if the wind were blowing toward the observer at 33.0Km/h from where the rail was struck?
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
A parallel-plate air capacitor has a capacitance of 940 pF. The charge on each plate is 2.10 µC. How much work is required to double the separation
A 28 kg child plays on a swing having support ropes that are 1.80 m long. A friend pulls her back until the ropes are 43 from the vertical and releases her from rest.
A world champion hammer thrower, rotates at a rate of 3.5 revolutions/sec just prior to releasing the hammer. What was the linear velocity of the hammer at release
Sound with a frequency of 431 Hz travels through steel. A wavelength of 11.27 m is measured. determine the speed of the sound in steel
A refracting telescope has an objective lens of focal length 16.0in and eyepieces of focal lengths 12.0mm, What are the largest and smallest angular magnifications
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