Physics, 06.10.2019 08:00 isabelibarra6370
A580-mm long tungsten wire, with a 0.046-mm-diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb. when the light bulb is connected to a battery, a current of 0.526 a is measured through the filament. (note: tungsten has a resistivity of 4.9 × 10-8 ? • m.) how many electrons pass through this filament in 5 seconds?
what is the resistance of this filament?
what is the voltage of the battery that would produce this current in the filament?
Answers: 1
Physics, 22.06.2019 05:00
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
Answers: 1
Physics, 22.06.2019 06:20
Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.
Answers: 1
Physics, 22.06.2019 06:50
What is the stall speed at sea level of an airplane that weights 10000 lbs., has a wing area of 300ft^2, and a maximum lift coefficient of 1.4? what is the stall speed if flaps that double cl,max are applied?
Answers: 1
A580-mm long tungsten wire, with a 0.046-mm-diameter circular cross section, is wrapped around in th...
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