Questions from College Physics

Q: Calculate the speed of (a) An electron and

Calculate the speed of (a) An electron and (b) A proton with a kinetic energy of 1.00 electron volt (eV). (c) Calculate the average translational kinetic energy in eV of a 3.00 x 102-K ideal gas parti...

Q: An electric field does 1.50 x 103 eV of work

An electric field does 1.50 x 103 eV of work on a carbon nucleus of charge 9.61 x 10-19 C. Find the change in the nucleus’ (a) Electric potential and (b) Electric potential energy in joules.

Q: An alpha particle, which has charge 3.20 x 10

An alpha particle, which has charge 3.20 x 10-19 C, is moved from point A, where the electric potential is 3.60 x 103 J/C, to point B, where the electric potential is 5.80 x 103 J/C. Calculate the wor...

Q: In the classical model of a hydrogen atom, an electron orbits

In the classical model of a hydrogen atom, an electron orbits a proton with a kinetic energy of +13.6 eV and an electric potential energy of -27.2 eV. (a) Use the kinetic energy to calculate the class...

Q: Consider the Earth and a cloud layer 8.0 x 102

Consider the Earth and a cloud layer 8.0 x 102 m above the planet to be the plates of a parallel-plate capacitor. (a) If the cloud layer has an area of 1.0 km2 = 1.0 x 106 m2, what is the capacitance?...

Q: A swimming pool filled with water has dimensions of 5.00

A swimming pool filled with water has dimensions of 5.00 m x 10.0 m x 1.78 m. (a) Find the mass of water in the pool. (b) Find the thermal energy required to heat the pool water from 15.5°C to 26.5°C....

Q: A potential difference of 90.0 mV exists between the inner

A potential difference of 90.0 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a posi...

Q: (a) When a 9.00-V battery is

(a) When a 9.00-V battery is connected to the plates of a capacitor, it stores a charge of 27.0 μC. What is the value of the capacitance? (b) If the same capacitor is connected to a 12.0-V battery, wh...

Q: An air-filled parallel-plate capacitor has plates of area

An air-filled parallel-plate capacitor has plates of area 2.30 cm2 separated by 1.50 mm. The capacitor is connected to a 12.0-V battery. (a) Find the value of its capacitance. (b) What is the charge o...

Q: Air breaks down and conducts charge as a spark if the electric

Air breaks down and conducts charge as a spark if the electric field magnitude exceeds 3.00 x 106 V/m. (a) Determine the maximum charge Qmax that can be stored on an air-filled parallel-plate capacito...