Acapacitor consists of two metal surfaces separated by an insulating layer. a new capacitor has no charge on either of its surfaces. if you begin transferring charge from one surface to the other, the first surface becomes negatively charged while the second surface becomes positively charged. as you transfer the charge, the voltage of(a) the positively charged surface increases and the energy stored in the capacitor increases. (b) the positively charged surface decreases but the energy stored in the capacitor increases. (c) both surfaces increase but the energy stored in the capacitor decreases. (d) both surfaces increase and the energy stored in the capacitor stays constant.

When charging a capacitor transferring charge from one surface to the other, the first surface becomes negatively charged while the second surface becomes positively charged. As you transfer the charge, the voltage of the positively charged surface increases and the energy stored in the capacitor also increases. We can solve this by the definition of capacitance that is a  measure of the ability of a capacitor  to store energy. For any capacitor, the capacitance is  a constant defined as:

To maintain constant, if Q increases V also increases.

On the other hand, the potential energy can be expressed as:

In conclusion, as Q increases the potential energy also increases.

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me