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Unpolarized light incident through a polarizer passes through a second polarizer placed at an angle theta to the first. The final intensity of the light that emerges after traveling through the two polarizers is 20% of the original intensity. How much is theta? Give your answer in degrees.
An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
A 300 DC power supply has fully charged a 15 mF capacitor. The charged capacitor is connected to a 20 mH inductor. find the magnetic energy in the inductor
A capacitor has a capacitance of 2.48 10-8 F. In the charging process, how many electrons have been transferred
Bill is farsighted and has a near point located 110 cm from his eyes. what is the closest object that can be seen clearly by Anne when she wears Bill's glasses
Tammy leaves the office, drives 64km due north, then turns onto a second highway and continues in a direction of 33 degrees north of east for 79 km. What is her total displacement from the office
A 0.244 H inductor is connected to a capacitor and a 44.5 ? resistor along with a 37.2 Hz, 46.1 V generator. Find the voltage drop across the resistor at resonance
A railroad engine weighs three times as much as a freight car. If the engine coasts at 9 km per hour into a freight car that is initially at rest
A 2.0 kg, 20-cm-diameter turntable rotates at 100 rpm on frictionless bearings. Two 500 g blocks fall from above, What is the turntable's angular speed
The photograph shows an electron beam whose initial direction of motion is horizontal, from right to left. A magnetic field deflects the beam downward. What is the direction of the magnetic field?
2 protons, each with charge q=1.602E-19 C, are fixed in space. They form a spherical nucleus with diameter 1E-15 m. Find electric potential energy for the electron in orbit
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. Determine the specific heat of gold
Neutron-induced fissionof U-235 results in the fission products iodine-139 and yttrium-95. How many neutons are released
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