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Hydrogen gas can only absorb EM radiation that has an energy corresponding to a transition in the atom, just as it can only emit these discrete energies. When a spectrum is taken of the solar corona, in which a broad range of EM wavelengths are passed through very hot hydrogen gas, the absorption spectrum shows all the features of the emission spectrum. But when such EM radiation passes through room-temperature hydrogen gas, only the Lyman series is absorbed. Explain the difference.
Insulators (nonmetals) have a higher BE than metals, and it is more difficult for photons to eject electrons from insulators. Discuss how this relates to the free charges in metals that make them good conductors.
A gas undergoes an isochoric heating during which it gains 5760 Joule of heat, attaining a pressure of 3.91x105 Pa. Calculate the total change in internal energy of the gas
A glass window 0.35 cm thick measures 81 cm by 36 cm. How much heat flows through this window per minute if the inside and outside temperatures differ by 17° C
During a panic stop, a car decelerates at 7.00 m/s^2. What distance does the car travel in this time
A satellite, moving in an elliptical orbit, is 357 km above Earth's surface at its farthestpoint and 184 km above at itsclosest point. Calculate the semimajor axis of the orbit. Calculate the eccentricity of the orbit.
one capacitor with two flat conductors are seperated with 4mm. the area of each plate is 5m^2. one plate has charge of +200mC , calculate the capacitance of the device
A 1128 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a radius of 272 m. A) At what angle should the highway engineer bank this curve so that vehicles traveling at 72.9 can safely round it regardless of the condition..
The 80 cm-tall, 68 cm wide tank is completely filled with water. The tank has marks every 10 cm along one wall, find Which is the lowest mark you can see
The plates of a spherical capacitor have radii 54.8 mm and 57.3 mm. Calculate the capacitance in picofarads. What must be the plate area in square centimeters of a parallel-plate capacitor with the same plate separation and capacitance?
A proton accelerates from rest in a uniform electric field of 652 N/C. At some later time, its speed is 1.26 106 m/s. How far has it moved in that interval
question a car starts from rest and moves around a circular track of radius 30.0 m. its speed increases at the constant
Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. How many beats does the student hear per second
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