Questions from College Physics

Q: The immediate cause of many deaths is ventricular fibrillation, an uncoordinated

The immediate cause of many deaths is ventricular fibrillation, an uncoordinated quivering of the heart, as opposed to proper beating. An electric shock to the chest can cause momentary paralysis of t...

Q: When a certain air - filled parallel - plate capacitor is connected

When a certain air - filled parallel - plate capacitor is connected across a battery, it acquires a charge of 150. μC on each plate. While the battery connection is maintained, a dielectric slab is in...

Q: Capacitors C1 = 6.0 μF and C2 = 2.

Capacitors C1 = 6.0 μF and C2 = 2.0 μF are charged as a parallel combination across a 250 - V battery. The capacitors are disconnected from the battery and from each other. They are then connected pos...

Q: Oppositely charged parallel plates are separated by 5.33 mm.

Oppositely charged parallel plates are separated by 5.33 mm. A potential difference of 600. V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is...

Q: Two positive charges each of charge q are fixed on the y

Two positive charges each of charge q are fixed on the y - axis, one at y = d and the other at y = -d as in Figure P16.70. A third positive charge 2q located on the x - axis at x = 2d is released from...

Q: Metal sphere A of radius 12.0 cm carries 6.

Metal sphere A of radius 12.0 cm carries 6.00 μC of charge, and metal sphere B of radius 18.0 cm carries -4.00 μC of charge. If the two spheres are attached by a very long conducting thread, what is t...

Q: An electron is fired at a speed v0 = 5.6

An electron is fired at a speed v0 = 5.6 x 106 m/s and at an angle θ0 = -45° between two parallel conducting plates that are D = 2.0 mm apart, as in Figure P16.72. If the volta...

Q: (a) Find the potential difference ΔVe required to stop an

(a) Find the potential difference ΔVe required to stop an electron (called a “stopping potential”) moving with an initial speed of 2.85 x 107 m/s. (b) Would a proton traveling at the same speed requir...

Q: An ionized oxygen molecule (O2+) at point A has charge

An ionized oxygen molecule (O2+) at point A has charge +e and moves at 2.00 x 103 m/s in the positive x - direction. A constant electric force in the negative x - direction slows the molecule to a sto...

Q: A medium-sized banana provides about 105 Calories of energy.

A medium-sized banana provides about 105 Calories of energy. (a) Convert 105 Cal to joules. (b) Suppose that amount of energy is transformed into kinetic energy of a 1.00-kg object initially at rest....