Questions from College Physics

Q: A constant electric field accelerates a proton from rest through a distance

A constant electric field accelerates a proton from rest through a distance of 2.00 m to a speed of 1.50 x 105 m/s. (a) Find the change in the proton’s kinetic energy. (b) Find the change in the syste...

Q: Two capacitors, C1 = 18.0 μF and C2 =

Two capacitors, C1 = 18.0 μF and C2 = 36.0 μF, are connected in series, and a 12.0-V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent...

Q: A parallel-plate capacitor has capacitance 3.00 μF.

A parallel-plate capacitor has capacitance 3.00 μF. (a) How much energy is stored in the capacitor if it is connected to a 6.00-V battery? (b) If the battery is disconnected and the distance between t...

Q: Each plate of a 5.00 μF capacitor stores 60.

Each plate of a 5.00 μF capacitor stores 60.0 μC of charge. (a) Find the potential difference across the plates. (b) How much energy is stored in the capacitor?

Q: The voltage across an air-filled parallel-plate capacitor is

The voltage across an air-filled parallel-plate capacitor is measured to be 85.0 V. When a dielectric is inserted and completely fills the space between the plates as in Figure P16.53, the voltage dro...

Q: (a) How much charge can be placed on a capacitor

(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 5.00 cm2? (b) Find the maximum charge if polystyrene is used between the...

Q: Determine (a) The capacitance and (b)

Determine (a) The capacitance and (b) The maximum voltage that can be applied to a Teflon-filled parallel-plate capacitor having a plate area of 175 cm2 and an insulation thickness of 0.0400 mm.

Q: A parallel-plate capacitor has plates of area A = 7

A parallel-plate capacitor has plates of area A = 7.00 x 10-2 m2 separated by distance d = 2.00 x 10-4 m. (a) Calculate the capacitance if the space between the plates is filled with air. What is the...

Q: Lead pellets, each of mass 1.00 g, are

Lead pellets, each of mass 1.00 g, are heated to 200.°C. How many pellets must be added to 0.500 kg of water that is initially at 20.0°C to make the equilibrium temperature 25.0°C? Neglect any energy...

Q: A model of a red blood cell portrays the cell as a

A model of a red blood cell portrays the cell as a spherical capacitor, a positively charged liquid sphere of surface area A separated from the surrounding negatively charged fluid by a membrane of th...