subject
Physics, 22.10.2019 02:00 Bg88860709

Polystyrene has dielectric constant 2.6 and dielectric strength 2.0 × 10^7 v/m. a piece of polystyrene is used as a dielectric in a parallel-plate capacitor, filling the volume between the plates.

(a) when the electric field between the plates is 78 % of the dielectric strength, what is the energy density of the stored energy?

(b) when the capacitor is connected to a battery with voltage 500.0 v, the electric field between the plates is 78 %of the dielectric strength. what is the area of each plate if the capacitor stores 0.20 mj of energy under these conditions?

ansver
Answers: 2

Another question on Physics

question
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%)
Answers: 3
question
Physics, 22.06.2019 08:00
If a balloon is taken outside on a very cold day, what will occur?
Answers: 1
question
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
question
Physics, 22.06.2019 20:00
Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature
Answers: 1
You know the right answer?
Polystyrene has dielectric constant 2.6 and dielectric strength 2.0 × 10^7 v/m. a piece of polystyre...
Questions
question
Mathematics, 12.03.2021 23:20
question
Mathematics, 12.03.2021 23:20
question
Mathematics, 12.03.2021 23:20
question
English, 12.03.2021 23:20
question
Mathematics, 12.03.2021 23:20
question
Mathematics, 12.03.2021 23:20
Questions on the website: 13722363