A charged capacitor stores energy, and when the Teflon dielectric between the plates is pulled out the energy stored more than doubles. Where did the extra energy come from?
What will be an ideal response?
The charged plates have a net attraction to the polarized charges in the dielectric as the dielectric is removed. We must do work to remove the Teflon which puts extra energy into the capacitor system.
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A) 60° B) 90° C) 120° D) 150°
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. When you increase the plate separation, what happens to the value of E between the plates?
1.It increases. 2.It decreases. 3.It stays the same.
The lowest tone to resonate in an open pipe of length L is 200 Hz. Which one of the following frequencies will not resonate in the same pipe?
A) 400 Hz B) 600 Hz C) 800 Hz D) 900 Hz E) 1000 Hz
A scientific model is a mental conception that provides a framework that helps us think about some aspect of nature
Indicate whether the statement is true or false