A fully charged parallel-plate capacitor remains connected to a battery while you slide a dielectric between the plates. What happens to the value of Q?
1.It increases.
2.It decreases.
3.It stays the same.
1
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If telescope A is 160 cm in diameter, and telescope B is 32 cm in diameter, how much more light does telescope A gather than telescope B?
a. 5 times b. 10 times c. 20 times d. 25 times e. 100 times
Waves on a String: Transverse waves travel at 43.2 m/s in a string that is subjected to a tension of 60.5 N. If the string is 15.9 m long, what is its mass?
A. 0.515 kg B. 0.216 kg C. 0.366 kg D. 0.597 kg
A fixed amount of ideal gas goes through a process abc. In state a, the temperature of the gas is 152°C, its pressure is 1.25 atm, and it occupies a volume of 0.250 m3
It then undergoes an isothermal expansion to state b that doubles its volume, followed by an isobaric compression back to its original volume at state c. (Hint: First show this process on a pV diagram.) The ideal gas constant is 8.314 J/mol ? K, and 1.00 atm = 1.01 × 105 Pa. (a) How many moles does this gas contain? (b) What is the change in the internal energy of the gas between states a and b? (c) What is the net work done on (or by) this gas during the entire process? (d) What is the temperature of the gas in state c?
A compound resulting from a major fuel impurity is
a. CO2. b. CO. c. SO2. d. HC.