In the bohr model of the hydrogen atom an electron in
In the Bohr model of the hydrogen atom, an electron in the9thexcited state moves at a speed of2.70104m/s in a circular path of radius4.2810-9m. What is the effective current associated with this orbiting electron? mA
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an 8 g bullet traveling at 340 ms is shot into a 07 kg block of wood suspended from the ceiling by a 25 m long light
a280-kg block is initially at rest on a horizontal surface a horizontal force of760n is required to set the block in
a proton beam in an accelerator carries a current of115microa if the beam is incident on a target how many protons
the current in a 120-v reading lamp is 18 a if the cost of electrical energy is 0070 per kilowatt-hour how much does it
in the bohr model of the hydrogen atom an electron in the9thexcited state moves at a speed of270104ms in a circular
a log of mass 40 kg is dropped into river at 0degc if the relative density of the log is 08 what will be the volume of
after emptying her lung a person inhales 41 l of air at 00 oc and holds her breath how much does the volume of the air
a lightbulb has a resistance of 230 when operating with a potential difference of 180v across it what is the current in
an electric heater carries a current of175a when operating at a voltage of 120 vwhat is the resistance of the
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