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The electrons in a rigid box emit photons of wavelength 1484 nm during the transition.
a) What kind of photons are they-infrared, visible, or ultraviolet?
b) How long is the box in which the electron are confined?
An Atwood system which has two masses, m1 = 2 kg and m2 = 2.1 kg. What is the net force on this system
You are driving a car that weighs 1500 kg at 50 km/h, How much force would you need to apply on the wheels of your car through the breaks in order to be able to stop short of hitting the cat
An electric heater is used to heat a room of volume 66 m3. Air is brought into the room at 5°C and is completely replaced twice per hour. what minimum wattage must the heater have
basic terminology click geometry in the upper left-hand view.airfoil the wing.leading edge the forward rounded part of
A rope is used to pull a 5.57 kg block at constant speed 2.78 m along a horizontal floor. determine the work done by the rope's force
A curve of radius 53.8 m is banked so that a car of mass 2.5 Mg traveling with uniform speed 56 km/hr can round the curve without relying on friction to keep it from slipping on the surface
A very long solenoid of circular cross section with radius r= 5.4cm has n= 86.0 turns/cm of wire. An electron is sitting outside the solenoid, at a distance r= 5.90 cm from the solenoid axis. What is the magnitude of the force on the electron whil..
An ideal, monatomic gas is allowed to expand quasi-statically and adiabatically, What is the work done by the gas and What is the change in the internal energy of the gas?
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -18.20 eV. What is the energy of the first photon emitted
A 2000 kg car is traveling at a constant 15.0 m/s down a long mountain grade of 2.0%. The mountain road is 5.0 km long. What is the increase in the temperature of the brakes
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
The speed of sound in air at 20 C is 344m/s. How many milliseconds does each vibration take
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