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Light is reflected from a transparent coffee table. When the angle of incidence is 52.2°, the reflected light is completely polarized parallel to the surface of the table top. What is the index of refraction of the material of the table?
A metal rod with a diameter of 2.30 cm and length of 1.10 m has one end immersed in ice at 32oF and the other end in water at 212oF. what is the thermal conductivity of this metal
A playground merry-go-round has a radius of 4.20m and a moment of Inertia 240 kgm^2 and turns with negligible friction about a vertical axis through its center. What is the average power supplied by the child
It's found that string is set into oscillation only at the frequency 880 Hz and 1320 Hz as the frequency of an oscillator is varied over the range 500-1500 Hz. What is the tension in the string.
A magnetic field of strength 0.27 T is directed perpendicular to a plane circular loop of wire of radius25 cm. Find the magnetic flux through the area enclosed by this loop.
q1. shell fired from a cannon has a muzzle speed speed as it leaves the barrel of 800 fts. the barrel makes an angle
In a constant-volume process, 205 J of energy is transferred by heat to 0.94 mol of an ideal monatomic gas initially at 309 K. find the increase in internal energy of the gas
A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car.
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 g is placed on the block, What is the net force on the pebble when it is at a point of maximum upward displacement
In 1916 Milikan used measurements of the kinetic energy of photoelectrons to detemine plancks constant
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension. compute the wave propagation speed on the guitar strings
A dipole (two equal and opposite charges) are placed 1 nm apart. What is the electric force on the -e charge due to the +e charge
A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 48 cm. Describe the nature of this new image
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