Electricity and Magnetism Answers

A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at which the temperature is 22.0◦C and the pressure is 101kPa. The balloon rises to a location where the temperature is −30.0◦C and the pressure is 20.0 kPa. If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon? Assume that in both cases the hydrogen gas is in thermal equilibrium with the outside air.

2.0 litres of a ideal nitrogen gas (N2) are at 0.0◦ C and 1.0 atm. The ideal gas constant is and the atomic mass of nitrogen is 14 g/mol. The number of moles, number of molecules of and the mass of N2 gas are ?

A sealed 26m3 tank is filled with 2000 moles of oxygen gas (O2) at an initial temperature of 270 K. The gas is heated to a 􏰓nal temperature of 460 K. The atomic mass of oxygen is 16.0 g/mol. The 􏰓nal pressure of the gas is closest to ?

A water molecule in a vacuum is attracted to a region with an E field of 10^6 V/m. What is the kinetic energy of this molecule in this field (expressed in eV)?

Given the dielectric constant of water 80. If the average molecular magnetic dipole moment of water is 6.2×10^-30 cm. Determine polarisation and electric field?

For each of the following properties, identify whether radio waves, light waves, or X rays have the largest value.

a. wavelength

b. frequency

c. velocity

Calculate the work required to bring a charge of 5.0 statC from a point of 24 cm from a charge of 60 statC to a point 3 cm from it.

Given dielektric water constant is 80, if mean of momen dipole molecular magnetic water is 6,2×10^-3, what is polarization and magnetic field

Given vector potential at a distance 7cm of a solenoide axis which has a length of infinite with radius is 2cm and have magnetic field 0,3T ?

A spherical BaTiO3 material with rsdius R had uniform polarity p. What is the dipole moment p?

For a circular current element of radius, b = 6 m, determine the magnetic field H on the axis of the loop if

 I = 4A, h = 6 m. Also find H at the center of the loop.