Physics, 11.09.2019 03:20 novesparks
A4.15-volt battery is connected across a parallel-plate capacitor. illuminating the plates with ultraviolet light causes electrons to be emitted from the plates with a speed of 1.76 × 106 m/s. (a) suppose electrons are emitted near the center of the negative plate and travel perpendicular to that plate toward the opposite plate. find the speed of the electrons when they reach the positive plate. (b) suppose instead that electrons are emitted perpendicular to the positive plate. find their speed when they reach the negative plate.
Answers: 1
Physics, 22.06.2019 01:10
Asteam power plant operates on an ideal reheat rankine cycle between the pressure limits of 15 mpa and 10 kpa. the mass flow rate of steam through the cycle is 12 kg/s. steam enters both stages of the turbine at 500°c. if the moisture content of the steam at the exit of the low-pressure turbine is not to exceed 10 percent, determine (a) the pressure at which reheating takes place, (b) the total rate of heat input in the boiler, and (c) the thermal efficiency of the cycle. also, show the cycle on a t-s diagram with respect to the saturation lines. (2.15 mpa; 45.0 mw; 42.6%)
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Physics, 22.06.2019 03:00
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Physics, 22.06.2019 06:00
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
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A4.15-volt battery is connected across a parallel-plate capacitor. illuminating the plates with ultr...
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