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a in the bohr model of the hydrogen atom what is the de broglie wavelength for the electron when it is in the n 2
capacitors c1 13 uf and c225 u f are each charged to 15 v then disconnected from the battery without changing the
the plane of a 530cm by 900cm rectangular loop of wire is parallel to a 0220t magnetic field and the loop carries a
a 325g bullet picks up an electric charge of 175uc as it travels down the barrel of a rifle it leaves the barrel at a
a particle having a mass of 0180 gcarries a charge of 234times108 the particle is given an initial horizontal
consider a bright star in our night sky assume its distance from earth is 281 light-years ly and its power output is
a triply ionized beryllium ion be3 a beryllium atom with three electrons removed behaves very much like a hydrogen atom
a flexible circular conducting loop of radius 015m and resistance 40omega sign lies in a uniform magnetic field of 025t
1 calculate the longest wavelengths for light in the balmer lyman and brackett series for hydrogen2 calculate the
the photoelectric threshold wavelength of a tungsten surface is 272 nma what is the threshold frequency of this
a high-voltage transmission line with a resistance per unit length of 0320 km carries a current of 960 a the potential
initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of
a charged particle of mass 00020 kg is subjected to a 60 t magnetic field which acts at a right angle to its motion if
gamma rays of photon energy 0458 mev are directed onto an aluminum target and are scattered in various directions by
suppose one bullet with m512g moving to the right with a speed of 250 ms directed at 213 degrees above the horizontal
the plane of a single circular loop with radius 01 m is held so the area vector of the loop is facing the north
consider a spider walking from the top of a stationary beach ball let that angular position 0o the spider finds it
a square coil enclosing an area with sides 83 cm long is wrapped with 2545 turns of wire a uniform magnetic field
an ultraviolet lamp emits light of wavelength 400 nm at the rate of 430 w an infrared lamp emits light of wavelength
a man pushes a heavy box up a plank inclined at an angle of 30 calculate the ideal mechanical advantage of this incline
starting from rest a 670 kg object falls through some liquid and experiences a resistive drag force that is linearly
unpolarized light with an average intensity of 7500wm2 enters a polarizer with a vertical transmissionaxis the
an astronomer observes electromagnetic waves emitted by oxygenatoms in a distant galaxy that have a frequency of
a 300-uf capacitor is fully charged by a 120-v battery the two ends of this fully charged capacitor are then connected
a train is traveling at 30ms relative to the ground in still air the frequency of the note emitted by the train whistle