A parallel-plate capacitor, with air between the plates, is connected across a voltage source
This source establishes a potential difference between the plates by placing charge of magnitude
4.15 x 10-6 C on each plate. The space between the plates is then filled with a dielectric material, with a dielectric constant of 7.74. What must the magnitude of the charge on each capacitor plate now be, to produce the same potential difference between the plates as before?
3.21 × 10-5 C
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Ideal Gas Law: A certain automobile tire has a volume of 0.0185 m3. If the absolute (or total) pressure in the tire is 500 kPa and the temperature is 298 K, how many molecules are there inside the tire? (R = 8.31 J/mol ? K, NA = 6.022 × 1023 molecules/mol)
A. 2.25 × 1023 molecules B. 2.25 × 1024 molecules C. 3.25 × 1023 molecules D. 3.25 × 1024 molecules E. 3.25 × 1025 molecules
The ________ hypothesis was considered plausible in the 1800s, but is it no longer taken seriously
Fill in the blank(s) with correct word
You shout at a cliff, and hear your echo in 2 seconds. If the speed of sound in the air is 340 m/s, the distance of the cliff from you is __________
Fill in the blank(s) with correct word
The theory of general relativity proves that wormholes like those used in science fiction cannot exist
Indicate whether the statement is true or false