Physics, 15.04.2020 01:47 davidcortez27
Scanning microscope is used to look at cell structure with 10 nm resolution. A beam of electrons from a hot filament is accelerated to 50,000 km/s and then focussed to a small spot on the specimen. What is the wavelength in nanometers of the beam of incoming electrons?
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Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal
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Physics, 22.06.2019 18:00
Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”
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Physics, 22.06.2019 23:40
Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.
Answers: 3
Scanning microscope is used to look at cell structure with 10 nm resolution. A beam of electrons fro...
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